Wohler iAM-AUDIO-1 User manual

iAM-AUDIO-1
iAM-AUDIO-1-DANTE
iAM-AUDIO-2
iAM-AUDIO-2-DANTE
1RU/2RU, Multi Channel, Touch Screen Audio
Monitor
User uide
Part Number 821808, Revision G

Page 2
© 2018 Wohler Technologies, Inc. All rights reserved.
This publication is protected by federal copyright law. No part of this publication may be copied or
distributed, stored in a retrieval system, or translated into any human or computer language in any
form or by any means electronic, mechanical, manual, magnetic, or otherwise, or disclosed to third
parties without the express written permission of Wohler Technologies.
Reproduction
Licensed users and authorized distributors of Wohler Technologies, Inc. products may copy this
document for use with Wohler Technologies., Inc. products provided that the copyright notice above
is included in all reproductions.
Customer Support
Wohler Technologies, Inc.
31055 Huntwood Avenue
Hayward, CA 94544
Phone: [phone]
Web: www.wohler.com
Sales: [e-mail]
Support: [e-mail]
Disclaimers
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.
In no event will Wohler Technologies, Inc. be liable for direct, indirect, special, incidental, or
consequential damages resulting from any defect in the hardware, software, or its documentation,
even if advised of the possibility of such damages.
Some states do not allow the exclusion or limitation for incidental or consequential damages, so the
above exclusion or limitation may not apply to you.
PDF
All text strings appearing in this shade of blue are hyperlinks.
Other Technologies and Products
Google Chrome is a registered trademark of Alphabet Inc.
Microsoft Windows and Internet Explorer are registered trademarks of Microsoft Corporation.
Dante and Brooklyn are registered trademarks of Audinate Pty Ltd.
Ravenna is a registered trademark of ALC NetworX GmbH.
Bach is a registered trademark of Coveloz.
All product names, logos, and brands are property of their respective owners. All company, product
and service names used in this document are for identification purposes only. Use of these names,
logos, and brands does not imply endorsement.
Last Update
March 1, 2018

Page 3
TABLE OF CONTENTS
Table of Contents
User Guide..........................................................................................1
TABLE O CONTENTS............................................................................3
Table of Contents .............................................................................................3
CHAPTER 1: Installation ........................................................................5
Introduction ....................................................................................................5
Overview...............................................................................................5
Safety.............................................................................................................5
Instructions ...........................................................................................5
Safety Symbols......................................................................................6
Mounting...............................................................................................6
Heat Dissipation.....................................................................................6
Sympathetic Vibration.............................................................................7
Mechanical Bracing.................................................................................7
Electrical Interference.............................................................................7
Power ...................................................................................................7
Compliance .....................................................................................................7
CC ......................................................................................................7
ICES-003 ..............................................................................................8
CHAPTER 2: Local Operation ..................................................................9
Startup ...........................................................................................................9
ront Panel ......................................................................................................9
Rear Panel.....................................................................................................10
Channel Meters and Touch Operations ..............................................................14
Menu / Option Touchscreen .............................................................................16
Audio Preset ........................................................................................16
System Information..............................................................................17
System Options ...................................................................................18
Network Settings .................................................................................18
Speaker Options ..................................................................................21
actory Reset ......................................................................................22
CHAPTER 3: Technical Info ................................................................ 23
CHAPTER 4: The iAM-AUDIO Web GUI .................................................. 27
Web Browser / Control Device .........................................................................27
irst Time - IP Assignments .............................................................................27
Peer-to-Peer Connection .......................................................................27
Network Connection .............................................................................28
Dashboard.....................................................................................................29
Remote Metering............................................................................................30
Sign In .........................................................................................................31

Page 4
Channel Naming.............................................................................................32
Configuration – Configure Presets ....................................................................33
Configuration – Named Presets ........................................................................36
System Setup ................................................................................................37
Scan Network - Discovery ...............................................................................38
Network Setup...............................................................................................39
Database Management ...................................................................................40
Export Configuration.............................................................................40
Import Configuration ............................................................................40
Save / Restore Database (DB) .........................................................................42
actory Reset ................................................................................................43
APPENDIX A: Software Upgrades.......................................................... 44
Introduction ..................................................................................................44
Download the Software ...................................................................................44
Installing the Software Locally .........................................................................45
Installing the Software Remotely......................................................................46
APPENDIX B: Dante Network Setup ...................................................... 48
Introduction ..................................................................................................48
What is in the iAM-AUDIO for Dante .................................................................49
Dante
TM
Device Setup .....................................................................................50
Dante Clock Selection .....................................................................................51
Channel Names..............................................................................................51
AES67 ..........................................................................................................52
Device Lock ...................................................................................................53
Dante irmware Upgrades ...............................................................................54
Dante
TM
Legal Disclosures................................................................................54
APPENDIX C: Ravenna Network Setup .................................................. 55
Introduction ..................................................................................................55
What is in the iAM-AUDIO for Ravenna..............................................................55
RAVENNA-Compatible Talker/Listener .....................................................55
AVB Ethernet eatures ..........................................................................55
BACH™ Controller Interface...................................................................56
Home Page....................................................................................................57
Configuration/Device Management ...................................................................57
Controller Cloud ..........................................................................................59
Sync ............................................................................................................60
Source Streams ..........................................................................................61
Stream Destinations ...................................................................................62
Patch Panel .................................................................................................64
Troubleshooting .............................................................................................65
Ravenna irmware Upgrades ...........................................................................65

Page 5
CHAPTER 1: Installation
Introduction
Overview
The iAM-AUDIO units are 1RU/2RU multichannel multi-source audio monitors with
multiple standard copper connections and multiple S P 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 to provide flexible
monitoring capabilities.
Setups are created and configured using a self-contained 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. 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.
Safety
Instructions
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).
7. Protect the power cord from being walked on or pinched, particularly at plug
Important:
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.

Page 6
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.
Safety Symbols
Mounting
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:
Table 1-1: Clearance Recommendations
Clearance Surface
24” ront
3” Rear
2” Sides
1.75” Top and Bottom (if either radiates heat)
0” Top and Bottom (if no heat)
Heat Dissipation
The ambient temperature inside the mounting enclosure should not exceed 40°
Celsius (104° ahrenheit). 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.
WARNIN :
The symbol to the left warns of electric shock hazard ins
ide 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.

Page 7
Sympathetic Vibration
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.
Mechanical Bracing
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.
Electrical Interference
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.
Power
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.
Compliance
CC
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the CC 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.
Important
:
Heat gener
ated 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.

Page 8
ICES-003
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.

Page 9
CHAPTER 2: Local Operation
Startup
The iAM-AUDIO unit will begin its startup process when it is connected to power
through its external power supply. There is no power switch. It is normal for the
product to require just over two minutes to start up and be ready to use.
When the iAM-AUDIO unit completes its startup, the Power indicator will turn
green. Depending upon optional settings, all channel clusters will either be in the
muted condition or set in a predetermined way. You may then use the Mute, Un-
Mute or Solo capabilities to enable only the program channels you want to hear.
Front Panel
The front panels for the 1RU and 2RU models are shown in igures 2-1 and 2-2.
Operation and controls for the 1RU and 2RU models are identical, except for the
sizes of the displays and speakers.
igure 2–1: iAM-AUDIO-1 (1RU) ront Panel
igure 2–2: iAM-AUDIO-2 (2RU) ront Panel
Level Meter DisplayVolume Menu / Option Display Balance
Headphone
Jack USB
Po er
Speakers Adjust / Aux Volume
-00
-60
-40
-30
-20 -20
-30
-40
-60
-00
10
9S
t
e
r
e
o
A
S
t
r
e
r
e
o
B
S
t
u
d
i
o
7
S
t
u
d
i
o
2
78 56 34 1214
13 16 15
1211
Main Menu
Audio
Preset
System
Options
Factory
Reset
System
Information
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.

Page 10
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 the relative 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: Turning this control right or left moves a white selection
box from channel to channel on the metering screen. Pressing the Adjust control
solos the selected channel. If a muted channel is selected with this control, it is
unmuted and soloed. Pressing the Adjust control again or touching the meter area
anywhere removes the channel solo.
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 controlled 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. Power: This indicator lights green when the system is powered and ready for use.
A solid or blinking yellow color indicates that the product is starting up.
Rear Panel
The rear panels for the 1RU and 2RU models are shown in igures 2-3 and 2-4.
igure 2-3: iAM-AUDIO-1 (1RU) Rear Panel Layout

Page 11
igure 2-4: iAM-AUDIO-2 (2RU) Rear Panel Layout
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. our
regional AC power cords, supplied according to shipping region, are
available.
2. PIO: (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. An optional license key must be purchased to enable this function.
There are different hardware option cards for each signal and the appropriate
and desired capability must be specified at order.
5. MADI BNC: This COAX input accepts an AES10 64-channel signal at 48
kHz sample rate. An optional license key must be purchased to enable this
Important:
The monitor and power adapter have been tested as a combine
d
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.
Important:
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.

Page 12
function. 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. An optional license
key must be purchased to enable this function. The S P 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 S P ports to function. Refer to the System
Setup section in Chapter 4 and to igure 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. This output is adjusted by the Volume control. Other
options may be set in the Web GUI. AES Out 1 is a standard feature on
the iAM-AUDIO products. 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. An optional license key must be purchased to enable this
function. Channels are selected as AES 1-8.
10. 3 /HD/SD SDI: The two cages are provided to accept one or two
optional S P modules compatible with SDI coaxial or optical signals.
Single or dual transceiver arrangements are possible. The SP modules
are hot swappable for convenience. An optional license key must be
purchased to enable each module. A software license must be installed for
an S P port to function. Refer to the System Setup section in Chapter 4
and to igure 4-9 to install software licenses.
11. SFP 2022-6/7: (optional) Support for SMPTE 2022-6/7 is available as
an S P module which contains a 10GB Ethernet port. This allows the iAM-
AUDIO to monitor SDI audio transmitted in real time over Ethernet. The
SP modules are hot swappable for convenience. An optional license key
must be purchased to enable this function. A software license must be
installed for the S P port to function and for this S P module to function.
Refer to the System Setup section in Chapter 4 and to igure 4-9 to
install software licenses.
12. Analog Inputs: This DB-25 female connector accepts +10 dBu
broadcast level balanced audio. An optional license key must be purchased
to enable this function. Tascam cables may be used, and can be purchased
by contacting Wohler Sales. Refer to igure 2-5 for the pinout of this
connector.

Page 13
igure 2-5: Analog DB25 Input Connections
13. 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 and is adjusted by the
Volume control. The Analog Outputs are standard on the iAM-AUDIO
products.
igure 2-6: Analog XLR Output Connections

Page 14
Channel Meters and Touch Operations
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 set of audio channels forming an audio program—such as Mono
(1.0), Stereo (2.0) or Surround (5.1 or 7.1).
Audio meters are displayed on touchscreen LCD display(s) in labeled clusters, as
shown in igure 2-7. The clusters of channels and other options relating to this are
defined using the iAM-AUDIO Web GUI software as described in Chapter 4.
igure 2-7: Audio Level Meter Screen (iAM-AUDIO-2 display shown)
-00
-60
-40
-30
-20 -20
-30
-40
-60
-00
10
9S
t
e
r
e
o
A
S
t
r
e
r
e
o
B
S
t
u
d
i
o
7
S
t
u
d
i
o
2
78 56 34 1214
13 16 15
12
11
Channel / Cluster Touch Selection Area
Channel Identifiers
1. Channel Identifiers: Above the level meters are the Channel Identifiers.
They indicate the following:
An arrow pointing to the left indicates that this is a left channel and
will be monitored in the left speaker.
An arrow pointing to the right indicates that this is a right channel
and will be monitored in the right speaker.
Important:
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 configurat
ions at the Web
GUI level. Different presets typically have different input channels
assigned to various meters.
1
2

Page 15
A square indicates that this is a center channel and will be monitored
in both speakers.
The channel numbers within the symbols indicate the numbered position
in the meter display, not the channel position within the monitored
stream. Channel assignment is made in the Configure Presets page of
the Web GUI.
2. Channel / Cluster Touch Selection Area: Touching the meters of a
cluster will let you mute, un-mute, or solo the associated channel(s).
Colored boxes surrounding the cluster or channel indicate what operation
is being performed. The following describes each function:
3. Mute / Un-Mute Selection: A violet box surrounds any channel cluster
that is muted. Typically, when the iAM-AUDIO is first powered or when a
preset is changed, all of the channel clusters are muted. Touching a
muted channel cluster un-mutes it and removes the violet box. Muting
and un-muting by touching is an alternate action function.
4. Solo Selector: Touch for two seconds any channel cluster you would like
to solo. A blue box will then surround the cluster and that will be the only
cluster you hear. Any violet boxes will disappear. Touch again to return
the combination of monitored clusters to the way they were before you
soloed the cluster.
5. Channel Solo: Rotating the Adjust control will move a white selection
box from channel to channel. Press the Adjust control to solo the
selected channel. That channel alone will then be surrounded by a blue
box and it will the only channel being monitored. Press the Adjust control
again or touch anywhere on the meters to undo the solo and return the
combination of monitored clusters to as it was before you soloed the
channel.
3

Page 16
Menu / Option Touchscreen
By far, most of the option settings are performed using the Web-based GUI
software. However, there are a few commonly used setting and information
screens that are available locally in the iAM-AUDIO-1 and iAM-AUDIO-2 using the
Main Menu which appears on the left screen. Note that the menu screens for the
iAM-AUDIO-1 and iAM-AUDIO-2 are nearly identical, but possibly with minor
variations. In the following figures, screens from only one of the two products will
be shown.
igure 2-8: Main Menu
Audio Preset
Touch the Audio Preset button to display the Audio Preset menu as shown in
igure 2-9.
igure 2-9: Audio Preset Menu

Page 17
You can set up the content of each Preset using the Web-based GUI software. If
you have not set up a Preset, the selection button for it on the Audio Preset menu
will have a default name, as shown in igure 2-9 above.
1. The currently selected Preset is shown in yellow. To select a new preset,
touch one of the green Preset buttons. The button will highlight in yellow.
2. To put that Preset into effect, touch the Apply Preset button. This operation
takes about 5 seconds to complete. The meter screen will change to reflect
the new preset.
To exit this menu and return to the Main Menu, touch the Main Menu button.
System Information
Touching the System Information button displays the System Information
screen as shown in igure 2-10. This screen lets you view the product Serial
Number, the MAC Address, the System IP Address, and the Software Version.
igure 2-10: System Information Screen
The information shown on this screen is read only and cannot be changed.
Touch the Main Menu button return to the Main Menu.

Page 18
System Options
Touch the System Options button displays the System Options menu as shown
in igure 2-11. This screen is an access point to the Network Settings and
Speaker Options screens.
igure 2-11: System Options Menu
Network Settings
Touch the Network Settings button displays the Network Settings menu as
shown in igure 2-12. This screen lets you view or change the product IP, the Net
Mask, Gateway and DNS. It also lets you switch between a static (fixed) or a
dynamic (DHCP) network address.
igure 2-12: Network Settings Menu
1. To change the IP Address, Net Mask, Gateway, or DNS, tap the item you

Page 19
would like to change. A keypad will appear, as shown in igure 2-13.
igure 2-13: Network Configuration: Setting Change
2. Touch the digits to be entered and then touch the Enter button. The Clear
button may be touched to erase any mistyped digits.
3. Now repeat steps 1 and 2 until you have replaced all of the necessary digits.
4. To save the newly entered address(es), touch the Enter button. Touch the
Cancel button to return to the previous screen without saving any changes.
To change from a static (fixed) to a dynamic (DHCP) network address, touch the
DHCP button. The screen will change, as shown in igure 2-14. To change back to
a static (fixed) network address, touch the DHCP button again. The colors of the
buttons will return to the ones depicted in igure 2-12.
Important:
There is no confirmation for Save, so make sure you want to perform
this action before taking it. The system does not need to reboot before
it is once again ready for operation.

Page 20
igure 2-14: Network Settings: DHCP
1. To complete the network addressing scheme change, touch the Save button.
This will save the changes you selected.
2. Touch the Cancel button to return to the previous screen without saving any
changes.
Important:
There is no confirmation for Save, so make sure you want to perform
this action before taking it. The system will not need to reboot bef
ore it
is once again ready for operation.