iAM-AUDIO-1
iAM-AUDIO-1-DANTE
iAM-AUDIO-2
iAM-AUDIO-2-DANTE
1RU/2RU, Multi Channel, Touch Screen Audio Monitor
Software Release: V1.1
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Customer Support
Wohler Technologies, Inc.
31055 Huntwood Avenue
Hayward, CA 94544
Phone: 510-870-0810
Web: www.wohler.com
Sales: sales@wohler.com
Support: support@wohler.com
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Even though Wohler Technologies, Inc. has tested its equipment and software, and reviewed the documentation, Wohler Technologies, Inc. makes no warranty or representation, either express or implied, with respect to software, documentation, their quality, performance, merchantability, or fitness for a particular purpose.
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Last Update
October 3, 2016
Table of Contents
Channel Meters and Touch Operations
CHAPTER 4: The iAM-AUDIO Web GUI
Configuration – Configure Presets
Installing the Software Locally
Installing Software on Networked iAM-AUDIOs
APPENDIX B: Dante Network Setup
What is in the iAM-AUDIO for Dante
APPENDIX C: Ravenna Network Setup
What is in the iAM-AUDIO for Ravenna
Configuration/Device Management
The iAM-AUDIO units are 1RU/2RU multichannel multi-source audio monitors with multiple standard copper connections and multiple SFP module options facilitating high density coax and optical fiber connections. The unit also accepts Audio over IP signals via an Ethernet connector. Refer to the Specifications section or contact Wohler Sales for more information.
The iAM-AUDIO is compact and simple to operate. It has touch screen LCD displays providing high resolution meters, menus and basic monitor controls. Any channel (or group of channels that are clustered) from any source stream may be audibly monitored and summed with the other selected channels.
Setups are created with a web browser over a network connection. Setup configurations can easily be copied to other iAM-AUDIO units.
Each iAM-AUDIO can be configured with a number of presets. Nothing about the configurations of those predefined setups can be changed from the front panel without a passcode. This prevents less experienced or hurried operators from making accidental setup changes that could compromise their usage of the unit. It also reduces operator training to a minimum.
1. Read, keep, and follow all of these instructions; heed all warnings.
2. Do not use this equipment near water.
3. Use only a dry cloth to clean the equipment.
4. Do not block any ventilation openings.
5. Do not install near any heat source such as a radiator, heat register, amplifier, or stove.
6. Do not attempt to plug the unit into a two-blade outlet (with only two prongs of equal width).
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Important: |
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By design, this monitor will only plug into a three-prong outlet for your safety. If the plug does not fit into the outlet, contact an electrician to replace the obsolete outlet.
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7. Protect the power cord from being walked on or pinched, particularly at plug connection on the equipment and at the socket.
8. Use only the attachments/accessories specified by the manufacturer.
9. Unplug the equipment during lightning storms or when unused for long periods of time.
10. Refer all servicing to qualified service personnel. Servicing will be required under all of the following conditions:
a. The equipment has been damaged in any way, such as when the power-supply cord or plug is damaged.
b. Liquid had been spilled or objects have fallen onto the equipment.
c. The equipment has been exposed to rain or moisture.
d. The equipment does not operate normally.
e. The equipment has been dropped.
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WARNING: |
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The symbol to the left warns of electric shock hazard inside the unit. Disconnect the power cord before removing access panels when installing upgrades. Only qualified service personnel are to operate the equipment with covers removed, and are to exercise caution to avoid personal injury. |
The unit is designed for a standard 19" rack. Install it at ear/eye level for best high frequency response and visual observation of the display screens. Please adhere to the following clearances:
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Clearance |
Surface |
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24” |
Front |
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3” |
Rear |
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2” |
Sides |
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1.75” |
Top and Bottom (if either radiates heat) |
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0” |
Top and Bottom (if no heat) |
The ambient temperature inside the mounting enclosure should not exceed 40° Celsius (104° Fahrenheit). Adjacent devices can be rack mounted (or stacked) in proximity to the unit if this temperature is not exceeded. Otherwise, allow a 1RU (1.75”/44.45mm) space above and below the unit for air circulation.
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Important: |
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Heat generated by the class D power amplifiers, power supplies, and other components is vented by slots in the sides and back of the unit. Therefore, as a safety precaution, you must allow proper ventilation on these surfaces. |
Sympathetic vibration from other equipment (cables, etc.) in the rack may be serious enough to interfere with the unit’s sound quality. If you experience sympathetic vibrations, use thin card stock, felt, foam, or weather-stripping between the vibrating surfaces. Tie loose cables securely with cable ties.
Both the 1RU chassis and the 2RU chassis are securely attached to the front panel. In addition, the chassis has mounting tabs through which you attach it to the rack rail. This feature will reduce or eliminate rear bracing requirements in many mobile/portable applications. The weight of internal components is distributed fairly evenly around the unit.
Be careful to avoid mismatched cable types and other similar causes of undesired reflections in digital signal systems. If severe enough, such reflections can result in corruption of the digital data stream. As with any audio equipment, maximum immunity from electrical interference requires the use of shielded cable; however, satisfactory results can sometimes be obtained without it. The internal circuitry ground is connected to the chassis.
The unit comes with a standard external 18 VDC / 3.9 A power supply that connects to an AC mains power source (100 to 240 VAC, 1.5A, 50/60Hz) using an IEC power cord.
When the mains plug or appliance coupler is used as the disconnect device, the disconnect device should remain operable.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at their own expense.
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
The front panels for the 1RU and 2RU models are shown in Figures 2-1 and 2-2.
Operations and controls for the 1RU and 2RU models are identical, except for the sizes of the displays and speakers
1. Speakers: Local near field audio monitoring is achieved through the use of class D amplifiers. Two (left/right) low and mid/high range speakers are in the iAM-AUDIO-1 (1RU) model. Two full range speakers are in the iAM-AUDIO-2 (2RU) model.
2. Headphone Jack: A 1/4" jack for an optional headphone is provided on the front panel. Speaker audio mutes when headphones are plugged in.
3. Volume: This controls the speaker and headphone output level for the entire mix.
4. Balance: This controls left/right levels for the stereo mixes. By default, it controls loudspeaker and headphone output, though other options may be set in the Web GUI preferences.
5. Adjust / Aux Volume: Reserved for future use.
6. USB 2.0 Port: This USB Type A connector allows you to use a flash drive (not supplied) to perform software updates and copy system configurations to another iAM-AUDIO or to a PC. Software updates are accomplished from the Web GUI.
7. Menu / Option Display: This touchscreen display is used for a limited amount of setup and status display. The large majority of setup functions are performed using the Web GUI.
8. Level Meter Display(s): High resolution bar graph meters appear here showing the levels of up to 16 channels selected for monitoring. These are grouped into clusters as specified in the Web GUI: mono clusters (1.0), pair clusters (2.0), or surround sound clusters (5.1 or 7.1).
9. Phase Indicators: One phase indicator per channel pair display whether, on average, the channels are in phase or out of phase. The indicators light in red to show an out of phase condition.
10. Power: This indicator lights green when the system is powered and ready for use. A yellow color indicates that the product is starting up.
The rear panels for the 1RU and 2RU models are shown in Figures 2-3 and 2-4.
1. Power Connection: The iAM-AUDIO uses an external AC to 18V DC power adaptor. A locking DC connector for this power supply is provided on the rear panel. The AC inlet on the adaptor is a standard IEC receptacle for 100 to 240 VAC ±10%, 50/60 Hz power connection. Four regional AC power cords, supplied according to shipping region, are available.
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Important: |
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By design, the supplied AC mains power cord will only plug into a three-prong grounded outlet for your safety. If the plug does not fit into the outlet, contact an electrician to replace the obsolete outlet. |
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Important: |
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The monitor and power adapter have been tested as a combined apparatus to verify compliance with applicable safety and electromagnetic compliance standards. Use of another power adapter provided by the user may negate the compliance or cause the monitor to not perform properly. Wohler Technologies cannot accept any responsibility for the outcome in such cases. |
2. GPIO: (future implementation) This DB-9 connector provides 2 input pins and 2 output pins to perform GPIO functions as defined by the Web GUI.
3. Network Port: This Ethernet port can connect to either a LAN or to a PC to let you customize the iAM-AUDIO configuration. It will also allow you to copy system configurations from one iAM-AUDIO to another. It can also be used to update the iAM-AUDIO software and firmware.
4. AoIP: This Ethernet port can accept either a Dante or a Ravenna Audio over IP signal. There are different hardware option cards for each signal and the appropriate/desired capability must be specified at order.
5. MADI BNC: This COAX input accepts an AES10 64-channel signal at 48 kHz sample rate. The COAX output is reclocked from the MADI source. When power to the iAM-AUDIO is not present, the COAX input and output are automatically connected together to allow the MADI signal to pass through.
6. MADI Fiber SFP: (optional) This input module accepts an optical AES10 64-channel MADI input signal at 48 kHz sample rate. The SFP fiber module may be used in conjunction with the MADI BNC connectors to provide COAX to fiber or fiber to COAX conversion. The outputs are reclocked. A software license must be installed for SFP ports to function. Refer to the System Setup section in Chapter 4 and to Figure 4-9 to install software licenses.
7. Dolby Metadata: This RJ-45 jack transmits metadata from the selected Dolby bitstream in RS-485 serial data protocol.
8. AES Out: By default, the AES OUT 1 BNC outputs the same mixed audio as the XLR analog outputs, as heard from speakers or headphones, but as an AES3id pair. Other options may be set in the Web GUI. The AES OUT 2, 3, and 4 connections are reserved for possible future implementation.
9. AES In: These four BNC jacks accept AES3id digital audio pairs at a 48 kHz sample rate. Channels are selected as AES 1-8.
10. 3G/HD/SD SDI: The two cages are provided to accept one or two optional SFP modules compatible with SDI coaxial or optical signals. Single or dual transceiver arrangements are possible. A software license must be installed for an SFP port to function. Refer to the System Setup section in Chapter 4 and to Figure 4-9 to install software licenses.
11. Analog Inputs: This DB-25 female connector accepts +10dBu broadcast level balanced audio. Tascam cables may be used, and can be purchased by contacting Wohler Sales. Refer to Figure 2-5 for the pinout of this connector.
12. Analog Outputs: These male XLR connectors provide two balanced analog outputs: Left and Right. The source of these signals is the mix of audio as monitored by the internal speakers.
The audio mixer terminology of “solo” is used in this manual when referring to muting all but a specific audio channel or subgroup. Since the terms “group” and “subgroup” have different meanings in SDI vs. pro audio, this manual uses the term “cluster” to define a group of audio channels forming an audio program—such as Mono (1.0), Stereo (2.0) or Surround (5.1 or 7.1).
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Important: |
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The numbers for a meter bar graph position only indicate its relative position on the display, and not any particular channel number. Meter numbers only serve as references for monitor configurations at the Web GUI level. Different presets typically have different input channels assigned to various meters. |
Audio meters are displayed on touchscreen LCD display(s) in labeled clusters. The clusters of channels and other options relating to this are defined using the iAM-AUDIO Web GUI software as described in Chapter 4.
Clusters can be soloed and muted by touching the areas shown in Figure 2-7. Note that the dashed boxes shown in this figure are not actually shown on the screen.
1. Touching the upper part of a meter cluster will solo it.
2. Clusters currently soloed are outlined in a blue box.
3. Solos are exclusive (one at a time).
4. Touching the lower part of a meter cluster will mute it or un-mute it.
5. Clusters currently muted are outlined in a magenta box.
6. Mutes are additive. One or more clusters can be muted or un-muted to create custom mixes for monitoring.
7. Status messages may appear at the top of the screen for specific events.
8. Touching the middle of a meter cluster will activates Help. Help messages appear at the top of the screen when help is activated to give additional feedback.
By far, most of the option settings are performed using the Web-based GUI software. However, there are a few commonly used settings and information screens that are available locally in the iAM-AUDIO-1 and iAM-AUDIO-2. To reveal them, double-tap the left screen to open the Main Menu.
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Important: |
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Double-tap any menu in an empty area to return to the previous menu. |
Touching the Info button displays the iAM-Audio Info menu as shown in Figure 2-9.
1. To view information about the software, touch the SW Info button. This proceeds to the SW Info screen.
2. Touching the Reset IP Reboot button will change the network address to the factory default, static 172.27.2.2. It will also reboot the unit. You will then need to reconnect to the unit via the GUI in order to change the IP address from the factory default.
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Important: |
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There is no confirmation for Reset IP Reboot, so make sure you want to do this action before taking it. |
Touching the Setup button opens the iAM-Audio Setup menu as shown in Figure 2-10, which contains the Presets button. Presets are defined in the Web GUI. See Chapter 4 for further information on how to define presets.
Use the following steps to review or change the current Preset:
1. Touch the Presets button in the iAM-Audio Setup menu to proceed to the Presets screen.
2. The Presets screen shows the current Preset. To change to another Preset, touch the Recall Preset button. (To back out of this screen and not change the Preset, double-tap in a blank portion of the screen.)
3. Touching the Recall Preset button will proceed to a screen where you may choose a Preset to recall. The current Preset is highlighted in green. Touch the button of the Preset you want to recall. Wait a few seconds while the new Preset is recalled.
4. When the Preset has been recalled, you may leave the menu in place if it is typical for you to change Presets frequently. The menu will not time out. Alternatively, you may close the menu by double-taping a blank place on the screen to return to the previous screen, and then double-tap on a blank place on each succeeding screen to return to the Main Menu.
The Input Screen displays a graphical representation of which channels from the various sources are selected for monitoring. To reach the Input Screen, touch the Input button on the Main Screen. The Input Screen is shown in Figure 2-11.
As indicated in Figure 2-11, each of the 16 monitored
channels is sourced by the SDI input.
This screen may be shown all of the time if you prefer to see the
information it conveys as you monitor the selected channels. It will not time out. Alternatively, by double-tapping a blank
space on the screen, you may return to the previous menu.
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Specification |
Values/Domains |
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Power Requirements |
100 VAC to 240 V AC ± 10%, 50/60Hz |
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Power Consumption |
40 Watts |
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Dimensions (1RU) (H x W x D) |
1.75” x 19” x 7.5” (44mm x 483mm x 191mm), standard 19” rack mounting |
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Dimensions (2RU) (H x W x D) |
3.5” x 19” x 7.5” (88mm x 483mm x 191mm), standard 19” rack mounting |
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Weight (1RU) |
8 lbs. (3.6 kg) |
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Weight (2RU) |
10.4 lbs. (4.7 kg) |
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Supplied Accessories |
Power Adapter, AC Power Cord |
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Display Type |
LCD |
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Number of Displays |
3 (1RU); 2 (2RU) |
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Screen Resolution |
320H x 240V (1RU); 800H x 480V (2RU) |
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Level Meters |
Simultaneous VU & PPM |
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Level Meter Scale |
AES Scale |
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Sample Rate |
48kHz |
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De-Multiplexing |
16 channels from: · 16-channel SD/HD/3G-SDI · 64-channel AES10 MADI · |
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SDI Inputs / Outputs |
• 1 or 2 SDI Inputs or Outputs Optional – Single SFP Transceiver: • HD-BNC Coax 3G/HD/SD-SDI • Multi-Mode Fiber: 1 SI Optical SC-Connector, 1300nm · Single-Mode Fiber: 1 SI Optical SC Connector, 1310nm |
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MADI Inputs / Outputs |
• 1 MADI BNC, Standard Coax I/O Optional – SFP Transceiver: • Multi-Mode Fiber: 1 MADI Optical SC-Connector, 1300nm · Single-Mode Fiber: 1 MADI Optical SC Connector, 1310nm |
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Cable/Fiber Length (max) |
COAX (such as Belden 1694A): > 150 m |
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Multi-mode fiber: 1 km |
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Single-mode fiber: 10 km |
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Specification |
Values/Domains |
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AES Inputs / Outputs |
· Inputs: 8 AES channels on 4 BNC are optional · Output: 2 AES channels of monitored signal on 1 BNC is optional |
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Audio over IP Input / Output |
Ethernet AoIP I/O accepts either an optional · Dante/AES67 capable signal, or · Ravenna/AES67 signal |
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SDI Input Termination |
75Ω unbalanced |
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AES/EBU Input Termination |
75Ω unbalanced |
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AES/EBU/MADI Sampling Rate |
48 kHz |
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Analog Inputs |
8 balanced inputs (4 L/R channels) on DB25F |
Analog Input Impedance |
40kΩ balanced |
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Analog Outputs - Stereo |
XLR-3 Male, balanced +24 dBu max |
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Analog Output Frequency Response |
40 Hz to 20 kHz (± 1dB) |
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Analog Output Distortion |
<0.01% THD+N |
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Analog Output Dynamic Range |
> 100 dB |
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Analog Output Reference Level |
-20 dBFS = +4 ± 1.0 dBu |
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Internal Speakers - Stereo |
1RU; 75mm Low, 40mm Mid-Hi 2RU; 80mm Full Range |
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Peak Acoustic Output (1RU) |
98 dBA SPL (@ 2 feet) |
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Peak Acoustic Output (2RU) |
104 dBA SPL (@ 2 feet) |
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Hum and Noise (1RU) |
Better than -68 dB below full output |
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Hum and Noise (2RU) |
Better than -75 dB below full output |
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Power Output (1RU) |
12 Watts RMS, 24 Watts peak (each side) |
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Power Output (2RU) |
15 Watts RMS, 30 Watts peak (each side) |
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Acoustic Frequency Response |
150 Hz to 16 kHz (± 5 dB) |
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Headphone Out - Stereo
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40 Hz to 20 kHz (± 1 dB) |
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Headphone Load |
8Ω to 150Ω |
The self-contained iAM-AUDIO Web GUI allows you to customize the configuration of the iAM-AUDIO to suit your needs. The default presets configure the channels in each source in consecutive fashion. If the default configuration of the iAM-AUDIO suits your needs and you prefer to use it that way, then you do not need to use the iAM-AUDIO Web GUI.
Any web browser application running on any networked device such as desktop or laptop computer, tablet or smart phone can be used with the iAM-AUDIO Web GUI.
Tablets with no network connector need to be linked to a copper LAN through a Wi-Fi adapter.
Although they can be used, smart phones are not recommended because their smaller screen size would require more scrolling, making operation challenging.
The Chrome® web browser is recommended for speed and compatibility.
The iAM-AUDIO can operate with a static (fixed) or dynamic (DHCP) IPv4 address. The default address will be 172.27.2.2 when received from the factory or when switched from DHCP to static addressing mode. There two basic types of connections that may be used to connect the iAM-AUDIO to a web browser, a Peer-to-Peer Connection or a Network Connection.
The most straightforward way to connect the iAM-AUDIO to a web browser, free of possible network conflicts, is to establish a static peer-to-peer connection between the setup computer and the iAM-AUDIO. A 10/100/1000 MHz Ethernet switch may be used in between, but is not required.
Figure 4-1 shows an example of suitable address settings for the host computer in a Windows 7 control panel.
Close the control panel and reboot the host computer after making an IP address change to be sure the change takes effect. Either reconnect to the installed network or continue with this direct connection to access the iAM-AUDIO Web GUI.
When connected to a network, the iAM-AUDIO address will need to be changed to another address in order to be compatible with the address assignments for that particular network. Immediately after the host setup is complete, change the iAM-AUDIO’s address. Make the corresponding address, mask and gateway changes in the iAM-AUDIO Network Setup page. Refer to the Network Setup section of this chapter and Figure 4-11.
Otherwise set the iAM-AUDIO to DHCP address mode by checking the box for ‘Use DHCP?’ in Network Setup and have your IT administrator assign rights and settings for operation on the network. Allow enough time for your network’s DHCP server to recognize a new network device and assign an address after booting.
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Important: |
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The iAM-AUDIO uses the next three IP addresses for communication with the front panel displays (172.27.2.3 thru 172.27.2.5). These must be reserved by IT administration to preclude address conflicts with other network devices and proper iAM-AUDIO operation. |
Throughout the Web GUI, other pages are a click or two away using the list of selections on the left side. System Overview on this Dashboard page shows all preset configurations at a glance.
The currently selected preset for local operation is shown full color. Other stored, but not selected, presets have gray backgrounds.
The top row shows which sources are used in the preset. The middle row shows which channel numbers are assigned to each control strip. Colors in the bottom row indicate green for active, or red for muted states.
No changes can be made on this screen. Click View Details on the selected preset, or click on Configuration - Presets Management in the left navigation pane to make preset changes.
The lower part of the page shows front and rear panels for setup reference, plus alerts, status and license information. Refer to Figure 4-3.
Click on the Remote Monitor page to view the audio bar graph meters for the current preset.
Only authorized users should be allowed to make preset and network changes. Anybody can view the status of iAM-AUDIO units on the network, but logging in with a password is required to make any changes. When logging in is required to make a change, the page shown in Figure 4-5 will appear. Alternatively, log in can be done at any time by clicking on Administrative Account selection in the upper right portion of the browser page and clicking Log In.
By default, the User Name is: admin@test.com
By default, the Password is: Test123.
You can change the password of the administrative account on a unit by unit basis to suit your security needs. You will remain logged in until the browser window is closed or the session is disconnected physically or virtually, or you can log out by clicking Administrator Account in the upper right of any page.
Each channel will have a preassigned name in the configuration database. There is a separate set of names for each input type. Select the Input Type by clicking a check box, as shown in Figure 4-6. The default names (labels) can be changed by normal cursor text entry operations in your browser.
These names will be automatically assigned to the channel-strip label fields in a preset whenever it is selected. Individual channel names will appear on the remote metering screens, but not on the iAM-AUDIO front panel screens, due to space limitations. However, Cluster names, assigned per preset in the Configuration-Configure Presets page, will appear on the iAM-AUDIO front panel screens. Refer to the next section in this chapter
To change the channel names, simply click into the appropriate naming fields and type the new names. Click Save when you are finished.
Factory default Presets are provided for each input type as sixteen channels in consecutive order. Default mixes are left for odd-numbered channels and right for even-numbered channels. If one of these simple arrangements works for your application, there is no need to change any of your Presets, since the monitor can be left set to that Preset.
The Configuration page is where the routing of signal can be defined in virtually any arrangement. Clicking through from the Dashboard screen will display that Preset for editing of the existing configuration. Select other Presets for editing by clicking on the Recall Configuration box.
There are several settings available for each channel:
1. If BNC and Optical sources are installed, the MADI Input Selection switch will appear. Only one can be enabled for each Preset, though different Presets can use either one.
2. If a second SDI source is installed, the SDI-1/SDI-2 Indicator switch will appear. Only one can be enabled for each Preset, though different Presets can use either one.
3. Meter numbers 01 to 16 represent the left-to-right order of monitored channels within the Preset.
4. Select a different Cluster Type (size) by clicking the box under the meter number where you want the cluster (audio group or program) to begin on the left. Multichannel clusters will expand to the right, and overwrite any clusters on overlapping meter positions, making them Cluster-Type-None & Input Type-None.
5. The Input Type box switches between the available inputs. Inputs are enabled by software licenses. SDI and MADI optical inputs must have an SFP module installed for it to work. The iAM-AUDIO loops the selected incoming MADI stream to both coax and fiber outputs (if installed) enabling copper to optical conversion.
6. Check the Clock Reference box for the input to serve as clock sync reference. An SDI or MADI stream may exhibit some audible clicks if it is not synchronized externally and is not selected as the clock reference. A missing signal selected as the clock reference can prevent all audio from being monitored.
7. Channel # is where the source channel for each strip location is set.
8. Label 1 shows what will be displayed on the upper line of the channel strip, like a scribble strip on a mixing board. Label 2 is for the lower line displayed. Both labels will be automatically retrieved from the Channel Naming page when first selected here. Those names can be changed for this Preset, without affecting Channel Naming labels.
9. The Display box provides a way to not use one of the labels, for example if labels have too many characters for both labels to fit in the display space.
10. Mix is where you can set Left, Right or Left & Right mix assignments for the input source audio to be heard on front panel speakers and headphones, and how the rear panel outputs are mixed. Expect future versions to make left/right mix assignments automatically.
11. Save Configuration stores the Preset in the database.
12. Display Configuration loads the current (edited) Preset into the iAM-AUDIO for test purposes only. It will not be stored, and cannot be recalled later.
13. Apply Configuration saves the Preset to the database and loads it as the active preset.
Use this page to edit Preset names. Click Save to store the new name(s).
The System Setup page expands upon the status information available in the Dashboard page, showing the installed option licenses, and provides a means to add additional option licenses.
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This page will scan the network for Wohler iAM monitors installed on the network. Other devices can have their network settings reconfigured by clicking the Edit (pencil) icon. Information about the Updates tab is in Installing Software on Networked iAM-AUDIOs.
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Make network IP Address changes for the local iAM-AUDIO unit’s Management (MGMT) Port here.
The procedure for changing the IP Address information is as follows:
1. Use DHCP? Check this box if your network has a DHCP server and you want to use dynamic addressing. Otherwise, you must enter static IP address entries in the four fields which follow.
2. IP Address: Enter the network address. Leading zeroes are not required.
3. IP Mask: This should usually be 255.255.255.0 unless your network can work across multiple subnets.
4. Gateway Address: This should usually be the same domain and subnet address numbers as the IP Address, but with the last octet being .1.
5. DNS-nameserver: A default value is shown for reference only. DNS is not normally required for basic static IP network configurations to work. Your IT administrator will specify a value to work with mixed static/dynamic network setups.
6. Save: When you have made all of the necessary entries, press Save to apply the changes internally before rebooting the unit.
Use the Database Management - Database Export / Import page to back up an iAM-AUDIO’s Preset database to a USB flash drive.
Use the following steps:
1. Click the Export Presets button on the Database Management - Database Export / Import page.
2. Insert a flash drive in the front panel USB jack on the iAM-AUDIO you want to back up.
3. Click the blue reload page link at the bottom of the page. The Preset data will be written onto the Flash Drive. Do not withdraw the Flash Drive before all of the data is written to it.
These instructions are summarized on the Database Management - Database Export / Import page.
Use this to retrieve presets from a USB flash drive inserted in the front panel port. Follow the instructions on the bottom of the page to complete the procedure.
1. Click the Import Presets button on the Database Management - Database Export / Import page.
2. Insert a flash drive in the front panel USB jack on the iAM-AUDIO you want to recover Preset data from.
3. Click the blue reload page link at the bottom of the page. The list of Preset databases that are contained on the Flash Drive will appear on the screen.
4. Select a Preset database from the list. The Preset data you selected will be copied into the iAM-AUDIO. Do not withdraw the Flash Drive before all of the data is copied.
These instructions are summarized on the Database Management - Database Export / Import page.
This page is used to make a backup copy of the database within an iAM-AUDIO unit from which a Restore Database operation can be performed. The dataset stores various information about the unit, including the existing network configuration, channel names, presets, product information and other information.
The backup is made to the unit itself, not to a separate USB or network file. Multiple database copies may be created until a limit is reached, at which point existing copies must be deleted before a new one can be created.
A automated database copy will be created whenever you import presets from a new unit in order to enable recovery from a failure.
Use Save when you have made modifications to the Database and want to preserve a backup copy of it.
Use Restore to reverse database corruption if you notice or suspect the presets are not appearing correctly.
There is no need to Delete a database until the maximum number has been reached, and then only to make room for a new one.
This chapter describes how to download a software update file to your computer, transfer it to a USB flash drive and install the updated into an iAM-AUDIO.
Any available iAM-AUDIO software updates can be found at https://www.wohler.com/downloads.
Unzip and copy the update file(s) from your computer to the root directory (not inside a folder) of a USB flash drive. It must be FAT32 file type, and does not need to be empty. Please read and follow any supplementary instructions included in the download.
Both local and network update methods require that a USB flash drive, with Wohler Update Package(s) installed on it, be inserted into the front panel USB jack.
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Important: |
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The Web GUI is required to perform the software upgrade procedure. Refer to Chapter 4 First Time IP Assignments if not already set up for your network. |
Click on the System Update selection in the web browser GUI.
System Information in the right pane shows currently installed software and hardware versions.
Use the following steps to install a new software package into the iAM-AUDIO:
1. Insert the USB flash drive with iAM-AUDIO update package(s) into the front panel USB jack. Refer to the Download the Software section of this chapter for the specifics of download and file transfer to the USB flash drive.
2. A list of update file packages present on the USB drive will appear in the Description field area shown in Figure A-1, along with software Version number(s). Click on the one you want to use. If the “USB flash drive does not contain …” message below appears, the system has the latest software in it, and no further action is required or possible.
3. Click Update System button.
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Important: |
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Do not interrupt or remove power to the iAM-AUDIO, or remove the USB drive during the installation process. Doing so could crash the iAM-AUDIO software. |
4. The Web GUI will indicate progress of the software installation and results.
5. The iAM-AUDIO will display a message when the upgrade is complete and then reboot.
6. Remove the USB drive any time after upgrade is complete.
7. The iAM-AUDIO is finished upgrading and rebooting after the Power indicator returns to its green color and the front panel display is back to normal.
8. After the iAM-AUDIO reboots, either Refresh the browser by clicking on the Wohler logo, or close and reopen the browser for normal operation of the Web GUI.
This page will scan the network for Wohler iAM monitors installed on the network and allow firmware updates of compatible and accessible iAM-AUDIO units.
An iAM must be of the same type. For example, an iAM-MIX cannot be updated by an iAM-AUDIO. An iAM must be on the same IP subnet to be updated.
Use the following steps:
1. Refer to the Download the Software section of this chapter for the specifics of download and file transfer to the USB flash drive.
2. Insert the USB flash drive with iAM-AUDIO update package(s) into the front panel USB jack of the networked iAM-AUDIO that you wish to update.
3. Click the Scan Network selection.
4. Select the iAM-AUDIO to be updated from the list shown. Refer to the Scan Network - Discovery section of Chapter 4 and to Figure 4-10.
5. Click the Updates tab.
6. Follow the instructions that appear on the screen. Do not remove power to the iAM-AUDIO, or remove the USB drive during the installation process.
Installing the iAM-AUDIO into an existing and functioning Dante network is virtually plug and play. The iAM rear panel AoIP jack supports 1Gb/s and 100Mb/s Ethernet devices in Dante Audio over IP network configurations.
iAM-AUDIO channel source selections are made by choosing Input Type ‘AoIP’ in the Configuration-Configure Presets page regardless of which AoIP option is installed.
The iAM-AUDIO is set up at the Wohler factory to be used as a slave rather than a master within the Dante network. Other devices or software, such as a Dante Controller, are expected to be responsible for most device configurations and all audio routing.
Please refer to the Dante Controller User Guide or other control device documentation for specific network and device setup information.
The Audinate® Brooklyn II board automatically recognizes DanteTM networks when installed, will alert other devices of its presence and configuration, and will configure its AoIP address per DHCP or local link protocols. There is no need to set a static address for the iAM-AUDIO Dante port, so no address entry method is provided in the iAM-AUDIO for Dante network setup. While it is possible to Manually Configure an IP Address from the network, this is not a recommended Dante practice and should not be done.
Up to sixteen of the 64 AoIP receive channels can be monitored at once in the iAM-AUDIO. The sixteen iAM-AUDIO input channels selected by presets are transmitted to the Dante network.
The iAM-AUDIO DanteTM AoIP is configured by the iAM-AUDIO to receive up to 64 channels and transmit 16 channels of Dante AoIP at 48 kHz or 44.1 kHz audio sample rates. 48 kHz is the iAM default rate.
Sample rate selection is left up to the DanteTM
Controller device or software. All
devices connected to each other through a Dante network must be set to the same
sample rate. Slight ticking may be heard in the iAM-AUDIO monitor when
monitoring different input types at different sample rates or if sources are
asynchronous.
The iAM-AUDIO’s default Dante Device Name is “BKLYN-II- …” followed by the last 6 digits of the Dante port MAC address, as shown in Figure B-3. This name can be changed by the Dante Controller to appear that way on the network, but that will not change the iAM-AUDIO’s unit name appearing on GUI pages and iAM-AUDIO remote metering or discovery pages.
During initial setup, you may want to manually change the iAM unit Name in the System Setup page to match the reassigned Dante Device Name for consistency. Refer to Figure B-4.
Other changes such as Latency settings can be made by the Dante Controller through the Device View menus. Some changes may require remote rebooting of the Brooklyn II card to take effect, temporarily interrupting audio and publishing the new information to the network.
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Important: |
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Only 44.1 kHz and 48 kHz audio sample rates are currently supported by the iAM-AUDIO. The Brooklyn II card would accept a Dante Controller command to operate at other rates, without giving an indication it will not be implemented. |
While the Brooklyn’s internal clock is highly accurate, the iAM-AUDIO does not have provisions for external sync clocks, such as those that are GPS or media reference (video genlock or audio word clock) based. So it is generally not the best candidate to be the PTP Master Clock (commonly called the “grandfather clock”) for the network. It can be set as the preferred master if no better clock source exists. Refer to Figure B-5.
The iAM Brooklyn Dante card will serve as a temporary fallback clock source if preferred masters are interrupted. It functions as an accurate slave clock synchronized to the master clock on the network when not operating as the master.
The iAM-AUDIO uses the BKLYN-II default network channel names of Tx 01-16 and Rx 01-64. The network controller can change these names as desired, but iAM channel selections will remain as the original default numbers, unless changed in the Channel Naming - AoIP page. Note these iAM-AUDIO internal channel names are not passed to the Dante network for discovery purposes, and are internal to the iAM-AUDIO.
It is recommended for best operator understanding and system administrator reference that channel name changes made over the Dante network be manually entered in the iAM-AUDIO Channel Naming - AoIP page to match.
The iAM-AUDIO Brooklyn II can be configured for AES67 operation. AES67 operation with Dante is limited to eight or less receive and transmit channels at 48 kHz sample rates.
24 bit linear (L24) encoding and 1 msec packet time are fixed default transmit parameters.
16 bit (L16) or 24 bit (L24) encoding and 125/250/333/100 μsec packet times can be received.
The Device View - AES67 Config menu enables/disables AES67.
Further, Dante AES67 discovery and operational protocol requires manual assignments for static multicast transmit and receive IP addresses per Dante protocols for discovery and IGMP network operation. Destination addresses in range 239.nnn.0.0 – 239.nnn.255.255, port 5004 o nnn can be configured using the Dante Controller. The default is 69. The destination and receive address range must match. Provisions for this are in Dante Controller Device View - Network Config. Refer to Figure B-7.
The channels to be multicast are selected in the File menu-Create Multicast Flows window shown in Figure B-8.
Audinate recently added a feature whereby a remote controller can send a command to lock Dante network devices’ configurations. The iAM-AUDIO does not implement the Device Lock command at this time.
Wohler iAM-AUDIO monitors ship with current Brooklyn II firmware as of the option installation date. The version information is found in the Dante Controller Device View-Status page. iAM software/firmware is tested with the latest Dante code release. Therefore it is strongly recommended that iAM-AUDIO and Dante software/ firmware be updated at the same time to ensure compatibility and support of the latest features.
Use the Audinate Dante Firmware Update Manager Windows or OS X application to update the Dante firmware over the Dante network. Follow the application’s installation and usage guide plus any applicable technical notes available.
Follow the instructions in Software Upgrades for iAM-AUDIO updates.
TRADEMARK ATTRIBUTION: Products covered in the manual include licence from Audinate Pty Ltd under US Patents 7747725, 8005939, 7978696, 8171152, European Patent 2255541, Chinese Patent ZL200780026677.0 and other patents pending or issued, see www.audinate.com/patents”, or such other legend as Audinate may stipulate from time to time to the Manufactured Product and any packaging and marketing materials therefor
Installing the iAM-AUDIO into an existing and functioning Ravenna network is virtually plug and play. The iAM rear panel AoIP jack supports 1Gb/s and 100Mb/s Ethernet devices in Ravenna Audio over IP network configurations.
iAM-AUDIO channel source selections are made by choosing Input Type ‘AoIP’ in the Configuration-Configure Presets page regardless of which AoIP option is installed.
The AES67 enabled Coveloz Bach board supports the following features:
1) RFC 3551 – RTP Profile for Audio and Video Conferences
a) L16 16-bit linear format defined in RFC 3551 clause 4.5.11
b) L24 24-bit linear format defined in RFC 3190 clause 4
c) AM824 24-bit Audio as defined in IEC61883-6
d) Multicast and unicast session support
e) 48 kHz and 96 kHz audio sampling rates
f) 1 to 8 audio channels per stream
g) Up to 64 streams
2) Media clock support
a) 48 kHz and 96 kHz
3) Hitless Stream Redunancy
4) IGMP v3 support
5) Session Announcement Protocol (SAP) support
AVB uses the concept of streams and channels. A stream is a connection from one talker to one or more listeners. One stream can be made up of 1-60 audio channels. The Ravenna option supports the following AVB features:
1) AVB 1722 AVTP with multiple subtypes:
a) IEC 61883-6 MBLA
b) AM824, 24-bit Audio Encapsulation
c) Support up to 64 streams
d) Up to 8 channels per stream
e) 512+512 Channels of audio
f) 48kHz and 96kHz sampling rates
2) IEEE 802.1Q/SRP
3) IEEE 1722.1/AVDECC control
4) IEEE 802.1AS/gPTP
5) Compatible with Apple OS X devices, such as MacBooks and MacMini computers
6) Media clock per the AVnu specification
7) Hitless stream redundancy
The BACH board includes a Graphical User Interface to review and manage the Bach board. It provides an interface to:
1) Manage connections with ease
a) Display discovered devices and streams
b) Connect streams from network to local destinations
c) Start, stop and monitor stream health/status
2) Enable local BACH™ device configuration & status reporting. Examples include:
a) Receive buffer statistics
b) Ethernet statistics
c) Alarms
The context is device-specific, meaning that:
1) a stream “source” refers to this device’s source
2) One can change context to another device by selecting it on the Cloud Page
You can navigate to different pages within the Bach Controller GUI to review or perform various functions.
The Home page can be accessed by entering the 172.27.2.30 IP address. It gives a device overview and stream status.
The Patch page enables routing of connections between listener and talker channels for devices on the network. The highlighted green square indicates a routing connection between a source or talker (left) and a destination or listener (bottom). The Web GUI will allow selection of channels to monitor from among the listeners (bottom).
The Cloud page shows any Ravenna devices on the given network, including any Wohler devices with the Ravenna option installed.
The Source provides in-depth information on source streams that are transmitting (sourcing) Ravenna signals from devices on the network.
The Destination page provides in-depth information on your destination devices that are receiving Ravenna signals on the network. Clicking the Advanced button provides additional options.
The Sync page allows you to program parameters relating to Precision Time Protocol (PTP) based time synchronization of network clocks of your BACH-AES67 devices.
The Config page allows operations such as modifying the IP address, Packet time, Rebooting etc. Configure the Packet Time either as 1ms or 250us.