CRESTRON
Operations Guide - DOC. 8126
CNX Volume Control Expansion Card: CNXVTC-3
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CAUTION:
The CNXVTC-3 contains electrostatic sensitive devices (ESD);
observe precautions for handling ESDs to avoid damaging the card.
NOTE:
If installing the CNXVTC-3 into a CNMSX-AV, it is assumed that the
CNXCAGE has been installed.
1.
Disconnect power from the CNMSX.
2.
Use the Phillips tip screwdriver and remove two screws and blank
faceplate from the control system.
3.
Align the CNXVTC-3 with the card guides in the open slot and slide
the expansion card into postion.
4.
Firmly press both ends of the CNXVTC-3 faceplate to seat the
expansion card into the control system connector.
5.
Tighten the thumb-nail screws to secure the CNXVTC-3 to the control
system.
6.
Reapply power to the CNMSX.
Preparation for Use
Three distinct channels are available from the CNXVTC-3 via three connectors, A,
B, and C. Each connector is labeled IN (+, X, and -), OUT (+ and -), and G
(ground). Refer to a sample hookup diagram below and aside from reapplying
power to the control system last, complete the connections in any order.
Sample Hookup Connections for CNXVTC-3
AMPLIFIER
INPUT
UNPOWERED
AUDIO OUT
A/V
EQUIPMENT
Input impedance and balance are determined by external connections. Refer to the
diagram on the next page.
