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AFM-20DSP Quick Start Guide
This guide helps you install and use your AFM-20DSP for the first time.
Go to www.kramerav.com/downloads/AFM-20DSP to download the latest user manual and check if
firmware upgrades are available.
Step 1: Check what’s in the box
AFM-20DSP 20 Port Audio Matrix
Step 2: Get to know your AFM-20DSP
The terms HDMI, HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.
• Almost 3 cycles of red/blue/off/green
LEDs flashing in sequence for about
30 seconds when system is starting
up, and the application has not been
launched yet.
• Flashing green when application is
initializing.
• Green when system is ready for operation.
• Green when an input signal is present,
and the port is defined as line in.
• White when defined as line out.
• Blue when defined as mic in.
• Red when in clipping state.
• Orange when in limiting state.
• Off when there is no signal on the input.
IN OUT DANTE™ LEDs
(1 to 4)
Indicate Dante signal status:
• Green when a signal is detected.
• Red when clipping occurs.
• Orange when in Limiting state.
• Off when no signal is detected.
Lights green when an analog audio signal is associated with the HDMI OUT signal.
Otherwise remains OFF.
Lights green when the HDMI IN audio signal is present. Otherwise remains OFF.
• Green when a signal is detected.
• Off when no signal is detected.
If a signal is detected only on one channel, either left only or right only, the status
LED lights green.
CH 1(L)/CH 2(R) AMPLIFIER
LEDs
Indicates amplifier signal status:
• Green when a signal is detected.
• Off when no signal is detected.
In the web page, Ch1 and CH2 are referred to as AMP 1 and AMP 2, respectively.
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PORTS 3-pin Terminal Block
Connectors (1 to 20)
Interchangeable balanced mono audio ports. Connect to an audio source or acceptor in
one of 7 selectable I/O configurations: 16x4, 14x6, 12x8, 10x10, 8x12, 6x14, 4x16
Each port can be defined as line in, mic in, mic + 48V in, or line out.
Connect to an HDMI source for de-embedding the audio signal (the video signal is passed
through to the output).
Connect to an HDMI acceptor for embedding an audio signal from the matrix.
Connect to a digital stereo audio acceptor.
Connect to a digital stereo audio source.
Outputs two selected audio signals in two channels.
For Lo-Z: connect stereo output to Lo-Z speakers: L+ and L- to the left speaker; R+R- to
the right speaker.
For Hi-Z (70V or 100V): connect Hi-Z and COM to mono Hi-Z speakers.
Connect to Dante audio via the network. Provides 4 Tx channels and 4 Rx channels.
By default, DHCP is enabled.
RS-232 3-pin Terminal Block
Connector
Connect to a PC/serial controller to control the device.
15
Connect to a PC via a LAN to control the device and for firmware upgrade.
Connect to your PC to control the device.
Press and hold for about 5 seconds to reset the configuration to its default parameters.
Mains Power Connector and
Fuse
POWER Illuminated Power
Switch
Turn the device on and off.
Step 3: Mount AFM-20DSP
To rack mount the machine, attach both rack ears
(by removing the screws from each side of the
machine and replacing those screws through the
rack ears) or place the machine on a table.
• Ensure that the environment (e.g., maximum ambient temperature &
air flow) is compatible for the device.
• Avoid uneven mechanical loading.
• Appropriate consideration of equipment nameplate ratings should be
used for avoiding overloading of the circuits.
• Reliable earthing of rack-mounted equipment should be maintained.