Tait TM9000 User Manual

TA2922 Universal Line Interface Service Manual 23
© Tait Electronics Limited March 2010
4 Hardware configuration
Important This equipment contains devices which are susceptible to damage
from static charges.
The following hardware configuration is available for the TA2922 universal line
interface board:
■ Line input and output audio level adjustment
■ Talk-through level adjustment
■ SK1 I/O signal configuration
■ Additional configuration links
Note Configuration on the top side of the universal line interface board must
be completed before the board is installed in the radio, as the top side is
not accessible once the board is screwed to the radio lid.
4.1 Line input and output audio level adjustment
Potentiometers VR1 and VR2 are used to preset the line in and line out audio
levels. These 12-turn pots are accessible at the side of the TA2922 options board
while the option board is screwed into the TM series radio lid.
4-wire equipment setup
Test equipment set up as described below is required to measure and adjust line
audio levels in a 4-wire configuration with separate E&M keying.
TM8000/TM9000 radio
radio communication analyser
eg Rhode and Schwarz CMS50
RF in/out
audio
generator
output
audio/scope
input
13.8V DC
power supply
BNC
antenna
port
9-way
D-range
power
to input on line input transformer T2
to output of line output transformer T1
to TX Key control
or depending on
board configuration
Ω
600 line terminater resistor
(2 x 1.2K resistor in parallel)
Ω
+13.8V DC

Tait TM9000 Specifications

General

Brand	Tait
Model	TM9000
Category	Computer Hardware
Language	English