Trilogy Touch Technology Trilogy Commander Digital Intercom 9 - Manual (Page 61)

Commander Installation Guide
Trilogy Communications Limited Page 61 of 81
Issue 9
8. L EGACY H ARDWARE
The following hardware is no longer supplied by Trilogy Communications.
8.1 MATRIX CARDS
• 500-06-00 is marked 5510 on the card ejector since the base card is manufactured by
Pro-Bel. It carries a Trilogy designed sub board.
• 500-06-01 replaced the 500-06-00 and is a single board Trilogy design.
8.1.1 GAIN SETTING ON 500-06-00
Ports intended for use with cameras will have the appropriate rear connector back fitted in
the correct position, as per your requirements. The camera RCU has a passive-mixing pad
fitted, which necessarily inserts a 25dB loss into the 6
th
port of the associated matrix card.
The 500-06-00 6 port interface module has a sub-module fitted on which are the analogue
input and output buffers. The drawing below shows the layout of the 500-06-00 module, with
its sub-module.
Note that the 500-06-00 module is based on a Pro-Bel module numbered 5510. The card
ejector is marked with the number 5510, not 500-06-00.
On the sub-module are two links, which must be set correctly to provide gain compensation
for the loss of the mixing pad. Two positions are provided - “NORM” and “CAMS”. One link
must be moved to the CAMS position; the second link should be removed for operation with
cameras.