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Gecko Frames Instruction Manual 47
Video Frame
The conditions monitored by SMPTE Alarm reporting are:
• Frame Health
• Power supply 1 voltage
• Power supply 2 voltage
• Fan rotation
• Frame temperature
•Module Health (capability module dependent, refer to specific module
instruction manual).
• Power supply voltage
• Signal present at input
•EQ warning
•EDH Monitoring (capability module dependent, refer to specific
module instruction manual).
•EDH error detected
The impedance between the center conductor and shield of J101 can be in
one of two states:
•Open – less than100 µA of current will flow, and
•Closed – less than 2 V will appear from center conductor to shield with
less than 20 mA of current flowing.
There are three operational conditions (capability is module dependent,
refer to specific module instruction manual):
•Open – no faults,
•Closed – there is an internal fault, and
• Pulsing – there has been a signal error detected in one of the modules.
In addition to fault reporting through the SMPTE Alarm connector, there is
a RED Fault LED on the Frame Monitor and 8900NET Network Interface
modules that is visible through the Fault window of the 8900TF/TFN front
cover. This LED is OFF when no fault conditions are detected and ON
when either an internal fault or a signal error is detected.
A number of frames can be coupled together as one alarm circuit by using
a T-connector. Refer to Figure 21 on page 48 for a typical alarm circuit inter-
connect diagram.