Crestron QM-FTDC Operation And Installation Manual page 55

Crestron QM-FTDC
Operations & Installation Guide – DOC. 6312A
QM-FTDC Troubleshooting (continued)
TROUBLE POSSIBLE
CAUSE(S)
Video from Incorrect cable
RGB source is connections.
garbled or no
output.
Signal skew due to cable
length or unequal pair
length.
Poor RGB or Incorrect peak and/or boost
video image setting.
quality.
Hum on audio Grounding problem.
and/or mic.
Intermittent or Incorrect peak setting.
no audio/mic
output.
Microphone Microphone requires
does not phantom power or cannot
produce use phantom power.
sound.
Incorrect gain, gating
level, attack time or decay
time settings.
Incorrect volume and/or
mixer settings on
QM-RMCRX.
Intermittent Incorrect peak setting.
microphone
output.
Poor cable connection.
Gating setting too high.
Microphone
Input gain is set too high.
produces
harsh,
distorted
sound.
Buttons do Net ID incorrect or does
not function not match SIMPL
when Windows program.
pressed.
Button press Incorrect programming.
yields
incorrect
result.
Button LED Feedback signal names
does not incorrect in SIMPL
illuminate. Windows.
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CORRECTIVE ACTION
Verify 15-pin output cable
connection. Verify QM input cable
connections.
Verify maximum QM cable length
and compensation for skew.
Adjust SystemBuilder peak or boost
controls until image quality is
improved.
Refer to ground wire connection
instructions on page 22.
Adjust SystemBuilder peak control
until audio is restored.
Enable or disable phantom power
as necessary using controls
created in the SystemBuilder
project.
Adjust gain, gating level, attack
time, or decay time settings as
required.
Adjust volume and/or mixer
settings on QM-RMCRX-BA as
required.
Adjust QM-RMCRX-BA peak
control until audio is restored. For
more information refer to the latest
version of the QM-RMCRX-BA
Operations Guide (Doc. 6332).
Verify all cable connections.
Adjust gating level.
Lower microphone input gain.
InToolbox, check Functions |
CresnetID to verify Net ID. Verify
SIMPL Windows program ID.
Verify SIMPL Windows program.
Verify SIMPL Windows feedback
signal names.
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