Bird Technologies 21-87A-11-xx-T Series-Manual - Manual (Page 5)

Table of Contents Manual 7-9100-5 10/17/11
Table of Contents
General Description ........................................................................................... 1
T-Pass Selectivity vs. Cavity Loss ....................................................................... 4
Unpacking ............................................................................................................ 4
Installation Overview........................................................................................... 4
Assembly.............................................................................................................. 4
Peg Rack Assembly ............................................................................................ 6
Cavity / Isolator Mounting .................................................................................... 6
Installation ........................................................................................................... 7
Intermodulation Considerations ........................................................................... 8
Multicoupler Checkout ......................................................................................... 9
Required Equipment .......................................................................................... 9
Procedure .......................................................................................................... 9
Measurement Accuracy..................................................................................... 9
Multicoupler Tuning .......................................................................................... 11
Tuning Specifics ................................................................................................ 11
Fine Cavity Tuning............................................................................................. 12
Procedure .......................................................................................................... 12
Coarse Cavity Tuning ........................................................................................ 13
Procedure .......................................................................................................... 13
Retuning System to all new Frequencies .......................................................... 14
Multicoupler Expansion .................................................................................... 14
Typical Expansion Channel Installation ............................................................. 14
Peg Rack Procedure ....................................................................................... 14
Relay Rack Procedure..................................................................................... 15
Setting Cavity Insertion Loss ........................................................................... 15
Cavity Loss Setting Procedure 1 ..................................................................... 17
Required Test Equipment .................................................................................. 17
Procedure for T-Pass Loop ............................................................................... 17
Procedure for BandPass Loop .......................................................................... 19
Cavity Loss Setting Procedure 2 ..................................................................... 20
Required Test Equipment .................................................................................. 20
Procedure for T-Pass Loop ............................................................................... 20
Procedure for BandPass Loop .......................................................................... 21
Maintenance....................................................................................................... 23
Isolators.............................................................................................................. 23