User's Manual

Table Of Contents

EX7100 Technical Manual - Module Descriptions

Refer to Figure 7.27 and the steps outlined below:

Figure 7.27: UHF Duplex Filter Adjustment Locations

Note: From this point on the whole assembly will be referred to as the “Duplexer”, the

Band Reject Band Pass filter will be referred to as “BRBP”, the Band Pass Band Reject

filter as “BPBR” and the larger notch filter as “Duplex filter”.

The Duplexer is tuned in two steps. Initially the three parts (BRBP, BPBR and Duplex

filter) are tuned separately. The three parts are then connected together and the final

tuning is carried out to take into account the interaction between the three parts.

Bracketed ( ) numbers refer to the port numbers in figure 7.27 above.

Before undertaking the following procedures, ensure that the EX7100 terminal has been

powered down.

BRBP

Band Reject

Band Pass

Filter

(HPF)

BPBR

Band Pass

Band Reject

Filter

(LPF)

4 Cavity Duplex filter

Hig h

Low

low pass

adjustment

High pass

adjustment

Tx or Rx Tx or RxAntenna

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A B C

D E F G

H I J