22 Configuring the RF Multiplexers
Chapter 2
Selecting the Relay Drive Level
The relay drive level is set at the factory to +12 Vdc. This is the level used
by both the RF Multiplexer module and the Expander module relays.
NOTE
DO NOT CHANGE the relay drive level if using E1472A, E1473A, E1474A,
or E1475A modules.
If external relays of +5 Vdc or +24 Vdc are used with the RF Multiplexer
module, the drive level must be changed as follows:
1 Position the RF Multiplexer on a flat surface.
2 Using a TORX T-10 driver, remove the eight screws (part number
0515-1135).
3 From the rear, carefully lift shield enough to access jumpers.
CAUTION
POSSIBLE RELAY DAMAGE. Relays may be permanently
damaged if the incorrect relay drive level is selected. Change the
relay drive level only when ALL relays used (modules 00 AND 01
AND 02) require a +5V or +24V drive level.
CAUTION
POSSIBLE SHIELD DAMAGE. The shield is connected to the front
panel and will be damaged if bent too far. Do not move the RF
Multiplexer module from the flat surface with the shield in this
condition. It may be necessary to loosen the SMB connector nuts to
access the jumpers.
4 Move both jumpers (part number 1258-0141) from the +12 Vdc
position to the desired drive level. Jumper J200 sets the voltage drive
level for the relay modules connected to P200. Jumper J400 sets the
voltage drive level for the relay modules connected to P400.
5 Reinstall the eight screws.
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