18 November 1996
Multiplexer Module (TX2A/TX4A)
MUX-9
J1
1
8
1
J 3
J7
J4
J5
J6
J2
Figure 5: Connection of Multiplexer to RF Module
Note:
The lines ANT and GNDTX, which connect the Multiplexer board to the RF Module
must be connected as shown. They must not be swapped, otherwise the Multiplexer will
not work.
The antennas must (as usual) be tuned to resonance together with the RF Module. As the
Multiplexer does not include the feature to tune the antennas individually to resonance, the tuning
has to be done in such a way that the optimum reading performance is achieved for each antenna.
We recommend using the TIRIS Add-on Module ‘Dynamic Auto Tuning’, which allows each
antenna to be individually and automatically tuned to resonance.
HINT:
If you do not have the Dynamic Auto Tuning Module in your system we strongly
recommended that you use the TIRIS Antenna Tuning Indicator (ATI), for simple
monitoring of antenna resonance tuning.