EMR User's Guide
High Density Modular Audio Router (AES, Analog, MADI, TimeCode, Data)
TROUBLESHOOTING Revision 1.8 Page 137
8. TROUBLESHOOTING THE EMR
This section offers some basic guidance on how to debug the EMR system and provides some tools to
facilitate the commissioning process.
8.1. TDM CONNECTIONS
The most essential part of the EMR system is the various TDM connections. Ensuring that all TDM
connections are solid and error free should be the very first task of validating the system and also the first
step in troubleshooting any issues. The following sections describe how to validate the TDM connections
in the system.
8.1.1. Verifying TDM Connections to the EMR-ADMX
TDM connections to the EMR-ADMX-16X16 are paramount to the function of the system. The presence
and validity of the connections can be verified simply by looking at the TDM presence LEDs as described
in section
2.2.5.1.
As a further check, more detailed information can be obtained by going to the debug menu either through
the front serial port or by telnet to the module. Within the debug menu, there will be an option called TDM
input diagnostics. This option will display the Status, Error Rate, and Source for each input connection.
Using the information from this, check that all expected signals are present and no errors have
accumulated. If errors have accumulated then this is an indication of a bad connection to the rear plate, a
bad wire, or excessive cable length. Also verify that the source indicated by the card matches the
connections defined in Magnum.
8.1.2. Verifying TDM Connections to the EMR Output Modules
The EMR AES and analog modules provide LEDs on the front card edge and rear panel to show TDM
presence. Details regarding the locations of the LEDs can be found in section
2.2 for each of the
modules. If the LEDs do not display as expected then this is an indication of a bad connection to the rear
plate, a bad wire, or excessive cable length.
A flashing LED indicates that the TDM signal is present and valid but not being used by the module. In
this case, the module can be configured to use the TDM input using VistaLINK Pro. If the main TDM input
does not appear to work, the secondary input can be used simply by moving the connection over. As
default the EMR output modules are set to auto detect which TDM input is present at all times.
8.1.3. Verifying TDM Connections to the EQX Embedder and EMR-OP16-MADI Modules
The EQX-OP16AE-H (-3G)-2TDM modules and the EMR-OP16-MADI modules both have the same TDM
detection capabilities as the EMR-ADMX. Each module has a debug menu that can be accessed through
the front serial port. Under the Audio Diagnostics menu, select TDM Input Status. This will display the
Status, Error Rate, and Source for each input connection.
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