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Trilogy Communications
Mentor CX
6.
OPTION: 331-20-00 UNIVERSAL OPTION MODULE
6.1
I
NTRODUCTION
This optional module is capable of handling the following signals:
•
Black and burst (BB)
•
Tri-Level-Sync (TLS)
•
AES/DARS (unbalanced via BNC)
•
Word clock, 10 MHz, 27 MHz
Each option module provides two changeover “channels”, where a channels comprises two inputs (A
and B) plus one switched output. The module may be fitted in any of the six available option slots.
6.2
S
IGNAL
H
ANDLING
Black and burst (BB)
Mentor CX monitors PAL and NTSC BB and reports the detected standard.
•
Signal amplitude <180 mV causes a failure condition
•
Signal amplitude <210 mV (double terminated) or >500 mV (un-terminated) causes a
warning condition.
Tri-Level Sync (TLS)
The following 22 standards are monitored, detected and reported (see exceptions listed).
Description
Description
(reports as)
1920x1080/60/p
1920x1080/30/sF
1920x1080/60/i
1920x1080/59.94/p
1920x1080/29.97/sF
1920x1080/59.94/i
1920x1080/50/p
1920x1080/25/sF
1920x1080/50/i
1920x1080/60/i
1280x720/60/p
1920x1080/59.94/i
1280x720/59.94/p
1920x1080/50/i
1280x720/50/p
1920x1080/30/p
1280x720/30/p
1920x1080/29.97/p
1280x720/29.97/p
1920x1080/25/p
1280x720/25/p
1920x1080/24/p
1280x720/24/p
1920x1080/23.98/p
1280x720/23.98/p
•
Signal amplitude <180 mV causes a failure condition
•
Signal amplitude <210 mV (double terminated) or >500 mV (un-terminated) causes a
warning condition but does not cause changeover to occur.
AES/DARS (unbalanced via BNC)
AES signals from the Mentor RG can be transmitted as
unbalanced via a 75Ω BNC output, or
balanced via a D-type connector. See section 5.1.3 for information about balanced connection.
Mentor CX supports AES with 32, 44.1, 48 and 96 kHz sampling frequencies.
The following errors cause a failure condition:
•
Peak-to-peak signal level <320 mV
•
Incorrect AES preamble.
