© Tait Electronics Limited April 2010
www.taitworld.com
MAI-02922-01-01
TA2922 TM8000/TM9000 Universal Line
Interface Board Installation Instructions
TAIT: THE RIGHT FIT
Introduction
The TA2922 universal line interface board is fitted into the TM8000 and TM9000 radios
and is functionally equivalent to the AM8000-UIS manufactured by Tait Australia. It features
hardware and software-configurable options for features such as phantom DC keying
options, tail and anti-kerchunker timers and a flexible supply voltage monitoring alarm.
Available variants are:
■ 8-wire isolated line interface (TA2922-01)
■ 2-wire line interface (TA2922-02)
■ 6-wire line interface (TA2922-03)
■ 6-wire balanced line interface with unbalanced speaker output (TA2922-04)
■ 6-wire marine line interface (TA2922-05)
■ 6-wire -10dBm line interface (TA2922-06)
The TA2922 kits provide the following items:
■ TA2922-xx PCB assembly
■ 18-way micromatch loom
■ D-range foam seal
■ D-range hood parts
■ D-range screw locks (x2)
■ M3x8 taptite screws (x6)
The interface board fits inside the radio in the
options cavity and is connected to the main PCB
by the internal options loom. The 9-way D-range
connector mounted on the interface board fits
through the external options connector hole
provided in the radio chassis.
A configurable matrix allows the integrator to
allocate any of 26 different I/O signals to any of
the nine pins on the external 9-way D-range
socket.
Important: The radio does not meet the IP54
protection standard once a TA2922 board has
been installed.
external options
connector
internal options connector
D
-range
hood parts
D-range plug
universal line
interface board
universal line interface
installation parts
internal options loom
2 TA2922 TM8/TM9 Universal Line Interface Board Installation Instructions
© Tait Electronics Limited April 2010
Installation Precautions
This equipment contains devices that are susceptible to static charges. The procedures
outlined in this installation guide should therefore be carried out in a static-safe
environment. You can obtain information on antistatic precautions and the dangers of
electrostatic discharge (ESD) from standards such as ESD S4.1-1997 (revised) or BS EN
100015-4 1994. The Electrostatic Discharge Association website is http://www.esda.org/.
Installation
1 Program the radio. We recommend you do this prior to board installation to isolate any
hardware problems introduced during board fitting.
Ensure the TM8000/TM9000 radio is programmed with the following settings:
Programmable I/O form, Digital tab
If line interface enable/disable control is needed, set the following:
Programmable I/O form, Audio tab
PTT form, External PTT (1) tab
2 Configure the external D-range SK1 signals if required.
The available TA2922 variants have different signals available on the external D-range
connector SK1, determined by the factory fitting of the top-side zero ohm resistors to
a 26x9 matrix.
The external options connector SK1 pin out details for the available variants are:
Pin Direction Label Action Active Debounce Signal State Mirrored
IOP_GPIO1 Input PTT External PTT 1 Low 10 None None
IOP_GPIO2 Output BUSY Signalling Audio Mute
Status
Low None None None
Pin Direction Label Action Active Debounce Signal State Mirrored
IOP_GPIO4 Output DISABLE F1 Key Status Low None Latching None
Rx/PTT Type Tap In Tap In Type Tap In Unmute Tap Out Tap Out Type Tap Out Unmute
Rx None A-Bypass In On PTT R7 D - Split Busy Detect
EPTT1 T5 A-Bypass In On PTT None C-Bypass Out On PTT
Field Setting
Advanced EPTT1 PTT Transmission Type Voice
Audio Source Audio Tap In
Pin TA2922-01
8-wire
-10dBm in,
-10dBm out
TA2922-02
2-wire
-10dBm in,
-10dBm out
TA2922-03
6-wire
-14dBm in,
-2dBm out
TA2922-04
6-wire
-14dBm in
TA2922-05
6-wire
-0dBm in,
-0dBm out
TA2922-06
6-wire
-10dBm in,
-10dBm out
1 LINE OUT 1 LINE IN/OUT 1 LINE OUT 1 Speaker out LINE OUT 1 LINE OUT 1
2 GATE OUT 1 LINE IN/OUT 2 GND GND GND GND
3 GND — GND GND GND GND
4 PTT IN + — +13V8_SW +13V8_SW +13V8_SW +13V8_SW
5 LINE IN 1 GND LINE IN 1 LINE IN 1 LINE IN 1 LINE IN 1
6 LINE IN 2 — LINE IN 2 LINE IN 2 LINE IN 2 LINE IN 2
7 PTT IN - — PTT IN PTT IN PTT IN PTT IN
8 GATE OUT 2 RADIO DATA IN GATE OUT GATE OUT GATE OUT GATE OUT
9 LINE OUT 2 RADIO DATA OUT LINE OUT 2 GND LINE OUT 2 LINE OUT 2
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
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