Testing redundancy – Grass Valley 8900GEN-SM User Manual
Page 33
8900GEN-SM — Instruction Manual
33
8900GEN-SM Applications
Testing Redundancy
To test the Primary to Secondary redundancy, use the procedure below.
1.
Monitor the video output from the test module in slot 10 on a video or
waveform monitor.
2.
On the Genlock web page on the host module in slot 1, pull the module
out of slot 1 or take off the reference input to the rear module. This will
disable the Primary reference.
3.
Go to the Status web page for the 8985FS module in slot 10 (
) and note the warnings now present and whether the
Output Bus Source reported in the header now reports Ref Bus 2. This
shift should have occurred without causing any noticeable disturbance
while monitoring the output video from the test module.
Note
In 1080p/24 and 1080sf/24 rates only, there will be a noticeable disturbance
on the output video when switching Primary and Secondary references.
4.
Return the host module to slot 1 or reconnect the reference signal to the
rear genlock loop to reinstate the Primary reference.
5.
Note whether the Output Timing Source returns to the Primary in the
time set on the System Config page of the test module.
6.
All conditions should be locked and present on the Status and System
Config web pages.