Page 41 of 43
Trilogy Communications
Mentor CX
9.9
331-20-00
U
NIVERSAL
O
PTION
M
ODULE
Channel Set Type
NTSC, PAL, Tri-level, AES/DARS, word clock, clock 10 MHz,
clock 27 MHz
Number of channel sets
2
Changeover Type
Latching relay
Retains selected channel set on power fail.
Unselected channel terminated into 75
Ω.
Switching Time
Typically, <1 ms (max <3 ms)
Return Loss
Better than -40dB to 6 MHz
Crosstalk
[Unselected input to output, channel to channel]
<-60dB, 100 kHz to 6 MHz
<-50dB, 6 MHz to 50 MHz
Fault detection condition
[NTSC, PAL, Tri-level]
Fail condition
Signal low level threshold <180 mV
Warning condition
Signal low level threshold <210 mV
Signal high level threshold >50 0mV
Detected format difference
Format detection as detailed in section 6.2
[AES]
Fail condition
Signal low level threshold <320 mVpp
Incorrect AES preamble
Warning condition
Detected format difference
Supports AES with 32, 44.1, 48 and 96 kHz sampling frequencies.
[Word clock, 10 MHz clock, 27 MHz clock]
Fail condition
Signal low level threshold <320 mVpp
Warning condition
Detected format difference
Note for 27 MHz clock threshold accuracy margin increased to 25%.
Supports 10 MHz, 27 MHz and Word clock at the detected AES
sample rate.
