Nevion FRS-HD-CHO - Manual (Page 12)

FRS-HD-CHO Rev. 9
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3.3 Connections
Figure 5: FRS-HD-CHO-C1 backplane
right: connection side left: component side
The backplane for the FRS-HD-CHO is labeled FRS-HD-CHO-C1. The table below shows
the connectors and their functions.
Function Label Connector type
HD/SD-SDI or ASI input 1 IN1 BNC
HD/SD-SDI or ASI input 2 IN2 BNC
HD/SD-SDI or ASI output 1 O1 BNC
HD/SD-SDI output 1, inverted (ASI is a
polarized signal, i.e. the inverted signal is not
valid ASI unless inverted a second time)
___
O1
BNC
HD/SD-SDI or ASI output 2 O2 BNC
HD/SD-SDI output 2, inverted (ASI is a
polarized signal, i.e. the inverted signal is not
valid ASI unless inverted a second time)
___
O2
BNC
Black & Burst/ tri-level input SYNC BNC
Black & Burst/ tri-level input SYNC BNC
GPI in GPI TP45, pin 5 & 6
GPI out GPI TP45 pin 1, 2, 3, 4, 7 (pin 8 = GND)
Table 2: Connector functions
Unused SDI/ASI-inputs/outputs must be terminated with 75 Ohm.
3.4 Sync input
The two sync inputs on the backplane are internally connected. It is possible to use one as
input and the other as a looped output. The backplane also features a switchable
termination.
By setting the “red” switch in the upper right of Figure 5 to the „On‟ position the
sync input will be terminated to 75 Ohms.