TA2922 TM8/TM9 Universal Line Interface Board Installation Instructions
3
© Tait Electronics Limited April 2010
The D-range signals can also be field-configured by applying solder links to the 26x9
matrix on the bottom of the board. The matrix has a printed table with columns
labelled with the associated SK1 D-Range pin number, and rows labelled with the signal
letter, as shown below. Fit a solder link at the intersection of the required pin number
and signal.
For example, to configure SK1 pin 5 as ground, fit a solder link to the bottom-side
matrix at the intersection of row C and column 5.
Important:
Before fitting solder links to the bottom side of the matrix, remove existing
components from the top side of the matrix or check carefully that existing links do not
conflict with newly populated solder links on the bottom side. Failure to do so may result in
unexpected operation or permanent damage to the TA2922 interface.
Signal
Signal Name
Description
Direction
(relative to
TA2922)
Level
A
LINE OUT 1
Balanced line output (6/8-way)
/balanced line in/out (2-way)
Output
-30 to +10dBm into
600 ohms
B
/GATE OUT 1
RX gate output via relay contacts,
configurable
Output
0-50VDC @1A
C
GROUND
Analogue/DC ground
Bidirectional
0V
D
/PTT IN 1
PTT input to opto-coupler
Input
10-50VDC
E
LINE IN 1
Balanced line input (6/8-way)
Input
-30 to +5dBm
F
LINE IN 2
Balanced line input (6/8-way)
Input
-30 to +5dBm
G
/PTT IN2
PTT input to opto-coupler
Input
10-50VDC
H
/GATE OUT 2
RX gate output via relay contacts,
configurable
Output
0-50VDC @1A
I
LINE OUT 2
Balanced line output (6/8-way)
/balanced line in/out (2-way)
Output
-30 to +10dBm into
600 ohms
J
+13V8_SW
Switched DC supply output
Output
10.8-16VDC
@150mA
K
AUX MIC AUD
Mic audio directly to the radio aux
microphone input
Input
2.3VDC 15mV RMS
L
RSSI
Analogue RSSI output from the radio
Output
0-3VDC
M
LINE IN UNBAL
Unbalanced transmitter audio input
Input
8mV to 1V RMS
N
LINE OUT UNBAL
Unbalanced receiver audio output
Output
25mV to 1V RMS
O
GATE OUT DIRECT
Open collector RX gate output
Output
45VDC max
P
PTT DIRECT
Un-isolated PTT input
Input
5VDC max
Q
EXT GPIO3
Bidirectional I/O to/from radio
Bidirectional
0-3.3VDC
R
EXT GPIO4
Bidirectional I/O to/from radio and line
interface disable
Bidirectional
0-3.3VDC
S
EXT GPIO5
Bidirectional I/O to/from radio
Bidirectional
0-3.3VDC
T
EXT GPIO6
Bidirectional I/O to/from radio
Bidirectional
0-3.3VDC
U
EXT GPIO7
Bidirectional I/O to/from radio
Bidirectional
0-3.3VDC
V
RADIO DATA IN
Data to microcontroller (RS-232 level)
Input
-10 to +10V
W
RADIO DATA OUT
Data from microcontroller (RS-232
level)
Output
-10 to +10V
X
RTS IN
RTS input to microcontroller (RS-232
level) [not yet implemented]
Input
-10 to +10V
Y
CTS OUT
CTS output from microcontroller (RS-
232 level) [not yet implemented]
Output
-10 to +10V
Z
AUX I/O
AC coupled line to J1, can connect to
radio speaker output via internal wire
Bidirectional
N/A
