FOR-A FA-9500 Operation Manual page 216

 Audio Error Sense
Parameter Default
Correction Normal
*1 Fade function depends on the Fade Mode setting in the Fade In/Out menu.
 Correction
Normally set to Normal. Set to Disable for a specific program or duration when audio output
has noise or is muted.
The FA-9500 fades out audio or resets the delay circuit when a status change (SDI signal
input interruption, signal switchover (by a router, etc.) is detected. Faulty ancillary data in
normal audio signals may also be detected as status changes.
Audio signals with such faulty ancillary data may lead the FA-9500's automatic correction to
improperly process the audio input and produce noise or mute the audio.
Note that disableing the automatic correction can prevent such improper processing, however,
the following functions will also be disabled.
- After a signal switchover by router or the recovery of an interrupted SDI signal, delay
settings will lose their accuracy to within 1.3 msec max. Audio signal phases among audio
groups will not match.
Perform either of the following operations when setting Correction to Disable, or changing the
setting from Disable to Normal.
(a) Change the Alignment setting from Disable to Enable under SDI Input Audio in 9-4-2.
"Audio System".
(b) Disconnect and reinput the SDI input signal.
These operations reset the audio circuit and minimize the delay differences and group audio
phase differences. Output audio signals will be muted while performing the operations.
 Channel Status Mask
Parameter Default
CH1/2-CH15/16
BY-PASS
Setting range
Disable
Normal
Sensitive
Setting range
SRC BY-PASS
SRC
PCM
Mute
200
Description
*1
FA-9500 can fade and mute audio when it
detects a change in the audio status due to,
e.g., signal switchover. This parameter allows
you to select whether to detect changes and
how sensitive detection should be to such
changes.
Disable: Disables mute function when change
in audio status is detected. Normally not
selected.
Normal: Mutes when a change on an SDI
signal, ADP (Audio Data Packet), or DBN
(Data Block Number) is detected.
Normally selected.
Sensitive: Mutes when a change on channel
status, or EDP (Extended Data Packet)
presence (only for SD-SDI), as well as the
above items, is detected.
Description
Selects audio error sensor mode for each
stereo channel pair of SDI and AES input
audio signals whose channel status
*1
NON-PCM flag is 1.
SRC BY-PASS: Treats audio signals as
NON-PCM. By-passes audio signals through
*2
SRC , and selects audio clock input in the
NON-PCM signal channel for SDI AUDIO
*3
CLOCK.
PCM: Treats audio signals as PCM (standard
audio signal). By-passes audio signals
*2
through SRC , and select REFERENCE for
*3
SDI AUDIO CLOCK.
Mute: Treats audio signals as mute signals.