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Digital Video
2.13Rear Panel Connectors Continued:
Matrix Card Alarm Connector (J17)
An alarm circuit has been provided in the 32X32 Digital Video Matrix
Card's circuitry. This circuit acts as a switch to trigger an optional external
alarm in the event of a controller fault or failure. The controller alarm
circuit supplies a contact closure but does not provide a voltage to the
external alarm. The Matrix Card Alarm Connector, located on the back-
plane, allows connection of the Matrix Card Alarm.
Power In/Out Connector (J18)
Power can be supplied to the Cougar Digital Video Routing Switcher by
the use of an externally mounted power supply, by the use of an internal
PS70V Power Supply, or by the use dual internal PS70V Power Supplies.
The use of at least one PS70V Power Supply per Cougar Frame is re-
quired to prevent overload conditions. The DC Power Connector can be
used as DC power input (external power supply) or as DC power output
(internal power supply or power supplies) to allow the Cougar Digital Video
Routing Switcher to power additional video equipment items. External
power supplies must be diode isolated from the internal power supply. An
1N5821 or equivalent type diode may be used for this purpose.
Power Supply Alarm Connectors (J23 and J24)
An alarm circuit has been provided in the PS70V Power Supply's circuitry.
This circuit acts as a switch to trigger an optional external alarm in the
event of a failure in the power supply or of the external 110VAC (220VAC
for the international version) source. The alarm circuit supplies a contact
closure but does not provide a voltage to the external alarm. The alarm
connectors, located on the backplane, allow connection of external power
supply alarms.
Reference (Sync) Connectors (1 and 2)
The sync connectors are used to connect an external sync signal to the
Cougar Digital Video Routing Switcher. The sync signal may be either a
color black or composite video signal. The use of an external sync signal
allows switch changes to be accurately timed in the vertical interval. The
sync connectors are loop-thru connectors and must be terminated with 75
ohms if looping is not used.
10/95
P/N 81905903440
Installation
Section 2
2
INSTALLATION
page 2.13
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