2.4.1 500-08 SERIES CHANGEOVER CARD
The 500-08 Changeover Card is fitted at the left of each frame. Make sure the metal tab is
hooked into the clip on the side cheek. Ensure the top and bottom edge connectors are both
making good contact. The current version of this card is:
• 500-08-10 dual changeover for fault tolerant systems.
There are no LEDs or other external indicators on these boards.
NOTE: For non fault tolerant systems (i.e. those fitted with only the main talkback and
TDM controllers) we recommend that the 500-08-10 link is set to the “left” position.
operation. The default is Auto
mode where the left controller
is designated "main" and the
right is "standby".
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