Sierra Video Pro XL Series 8 - Manual (Page 67)

AUDIO SIGNAL
61
Audio Signal
Problem Remedy
No audio at the
destination device,
regardless of source
selected  Confirm that your sources and destination device are powered on and
connected properly. Audio signals connected to the input of your switcher
should be properly wired from the output of your source. Audio signals
connected to the output of your switcher should be properly wired to the input
of your destination device.
 Confirm that any other amplifiers in the signal path have the proper source
and/or destination selected. Pay special attention to input amplifiers that may
be built into your destination device.
 Replace the audio crosspoint module with one that is known to be functional.
Audio level is too low  Confirm that the connecting cables are of high quality and properly built. Take
special care in noting the wiring configuration of balanced to unbalanced
cables (if possible use a matching transformers).
 Check level controls located on your source input device or output monitor or
recorder.
 Replace the audio crosspoint module with one that is known to be functional.
Control
Problem Remedy
No control of Matrix
Switcher from PC
software  Confirm the correct wiring of the connecting cable. Be sure to use a standard
one to one 9 pin serial cable.
 Confirm that all Dip Switches on the control processor are set properly. See
Dip switch settings on page 18.
 Confirm that the baud rate of your computer COM port is set to the same as
that of your Matrix Switcher (9600-Baud factory default). Confirm that the
proper COM port is selected in the control software.
 Use a terminal emulator program to send **!! commands and check for **OK!!
response.
 If you do not receive **OK!!, the problem is with the switcher.