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Trilogy Communications
Mentor CX
5.
MAIN CONTROLLER BOARD
5.1
I
NTRODUCTION
In addition to providing overall control of the Mentor CX, the main controller board carries the
following channels which constitute the “base” unit:
•
2 x SDI - channels 1 - 2
•
4 x Analogue - channels 3 - 6
•
2 x AES (balanced via D-type connectors)
•
2 x LTC (balanced via D-type connectors)
The features of each channel type are described below.
5.1.1
SDI Channels (1 - 2)
The inputs monitor SDI – SD/HD/3G signals, but do not detect or report the format/standard.
The following error causes a failure condition:
•
Signal level approx. <500 mV.
5.1.2
Analogue Channels (3 – 6)
There are 4 analogue channels which can monitor and switch the following signal types:
•
Black and burst (BB)
•
Tri-Level-Sync (TLS)
•
AES/DARS (unbalanced via BNC)
•
Word clock, 10 MHz, 27 MHz
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.
