Tait TM8100 mobiles Service Manual page 470

17.2.1 Adjustment Points on the Line-Interface Board
Table 17.1 Line-interface board adjustment points
line-interface board
top side
17.2.2 Test Equipment Setup
470 TMAA01-01 Line-Interface Board
The following table describes the line-interface adjustment points.
Adjustments are made by setting the DIP switches on S1 to either "on" or
"off " and by three variable resistors (RV1, RV2 and RV3).
The following diagram shows the setup of the test equipment used when
adjusting RV1, RV2 and RV3.
Function
two-wire audio interface
four-wire audio interface
busy/gate = busy
busy/gate = rx-gate
busy/gate logic
(active high)
busy/gate logic
(active low)
bi-directional keying line
two-wire keying
enable gate/keying delay
gate/keying delay
audio line out level
audio line in level
time delay range
© Tait Electronics Limited November 2007
Selection 1 Selection 2
DIP1 on DIP2 off
DIP1 off DIP2 on
DIP3 on DIP4 off
DIP3 off DIP4 on
DIP5 on DIP6 off
DIP5 off DIP6 on
DIP7 on
DIP 7 off
DIP8 on
adjust RV1
adjust RV2
adjust RV3
W1 open
TM8100/TM8200 Service Manual