18 November 1996
Multiplexer Module (TX2A/TX4A)
MUX-11
2.2 Multiplexer Connectors and Jumpers
2.2.1 Connectors
Table 1 lists the pin functions for connector J1. The connector type is a 4-pin Phoenix connector
with 5.08 mm pin spacing.
Tables 2 lists the pin functions for the antenna screw block terminal J4. The Multiplexer is
connected to the RFM antenna terminals via connector J4.
Table 3 lists the pin functions for the antenna screw block terminal J3. The TX/RX antennas must
be connected to the RFM antenna terminals via connector J3.
Table 4 lists the pin function for ground post J6.
Table 5 shows the logic switching of the active channel.
All connectors are accessible from the top.
Table 1: J1 Pin Functions
Pin#
Signal
Direction
Description
1
V_IN
IN
Supply voltage input
2
GND
IN
Ground
3
CSA
IN
Channel Select signal CSA (LSB)
4
CSB
IN
Channel Select signal CSB (MSB)
Table 2: J4 Pin Functions
Pin#
Signal
Direction
Description
1
ANT
IN/OUT
Antenna resonator signal. This pin must be connected to
signal ANT of the S2000 RFM, or ANT1 if you are using
the Power RFM.
2
GNDTX
IN/OUT
Antenna ground. This pin must be connected to ground
GNDA of the S2000 RFM, or ANT2 if you are using the
Power RFM.