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Grass Valley XtenDD DD User Manual

Page 115

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5. Connection and Startup

5 - 53

Planning and Installation - Rev. 3 / 04.2005

5.7

ALARM SPECIFICATIONS

Specification according to SMPTE 269M:
The standard describes a simple interface over which television equipment can be

report the occurrence of internal failures and faults in incoming signals. It is in-

tended for use in all television equipment, from the simple active devices to the

most complex.
Electrical characteristics:
Optoislated output

Maximum voltage:

24V

Maximum output current:

150 mA max.

However, according to SMPTE 269M proposal

the sensing device shall not supply more than

20 mA of current to the reporting device

(i.e. the switcher).

Output Interface (simplified):