14. STATUS DISPLAY
159
1 SDI
SIGNAL
If an SDI signal is detected at the input connector, “DETECT” appears here. Otherwise,
“NO SIGNAL” appears. If “NO SIGNAL” appears, the error count information below will
be blank. The input format indication in the upper left of the screen will also show “NO
SIGNAL.”
“NO SIGNAL” may appear even when an SDI signal is being applied if the signal
amplitude is small or if there is a lot of jitter.
2 VIDEO
●
CRC
Appears when the input signal is HD.
An error is counted when the CRC embedded in the input signal is different from the
CRC that the LV 5381 calculates.
This will not appear if CRC is set to OFF or if the input signal is SD.
See section 14.6.1, “Detecting CRC Errors.”
●
EDH
Appears when the input signal is SD.
An error is counted when there is an error flag in an EDH packet in the input signal or
when the CRC computed from the input signal is different from an EDH packet's CRC
data.
EDH packets contain ancillary data error flags, active picture error flags, full-field error
flags, full-field CRC data, and active-field CRC data.
This will not appear if EDH is set to OFF or if the input signal is HD.
See section 14.6.2, “Detecting EDH Errors.”
●
A/B Delay or C/D Delay
This appears when the link format is set to dual (option).
An error is counted when the phase difference between links A and B exceeds 100
clocks.
3 AUDIO
When the link format is set to dual (option), only the audio signal embedded in link A is
detected.
●
BCH
Appears when the input signal is HD.
An error is counted when the input signal's embedded audio BCH code causes an error.
Errors may be counted at the instant when audio is embedded into an input signal or at
the instant when the audio is removed.
This will not appear if BCH is set to OFF or if the input signal is SD.
See section 14.7.1, “Detecting BCH Errors.”
●
CRC
An error is counted when the channel status bit of the input signal's embedded audio has
a CRC error. However, an error is not counted if the channel status bit is consumer.
Errors may be counted at the instant when audio is embedded into an input signal or at
the instant when the audio is removed.