4170-ams.ib.rev0.doc
Page 10 of 14
09/09/2005
Installation
Installation in frame or chassis:
See details in separate manual for selected frame type.
See also
Configuration
section.
Video connections:
Video signal connections are made to BNC coaxial connectors. No termination of inputs is provided on the module.
When switched to the output the input load impedance is that of the load connected to the output. If AMS-4170 is
being used for a 2x1 switch application, second output should be terminated with a BNC terminator of correct
termination resistance to match source impedance, usually 75 Ohm.
Audio connections:
Audio signal connections are made to plug in balanced screw terminating connectors. No termination of inputs is
provided on the module. When switched to the output the input load impedance is that of the load connected to the
output.
Control connections:
Control connections are via SK 5 plug in screw terminating connector located on the rear assembly.
Connecting the appropriate control input to ground will cause the relays to operate and the output state to cross over
as follows:
Control Input Output
High (or O/C
*
) A
↔
A
B
↔
B
Low (Gnd)
A
↔
B
B
↔
A
Control input connector SK 5 pin configuration is as follows:
Pin Description
1 Video
control
2
Left audio control
3
Right audio control
5 Gnd.
Note: * O/C = Open Circuit.
IRT
Communications
www.irtcommunications.com
