Tait TA2922, TM9000, TM8000 Installation Instructions Manual

© 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

4 TA2922 TM8/TM9 Universal Line Interface Board Installation Instructions

© Tait Electronics Limited April 2010

3 Fit other additional solder links if required.

Other available configuration solder links are:

■ 2/6/8-wire operation

■ keying options

■ gate out relay operation

■ software profile configurations.

These bottom-side solder link pads can alternatively be fitted with top side machine­populated 0603 resistors. The table below indicates the hardware variants and the rela­tionship between bottom side solder link pads and top side resistor locations. Note that
some solder link pads are 2-way while others are 3-way links.

4 To fit the board, refer to the following diagram for item numbering. Remove the top

cover and lid

b

from the radio to access the options cavity.

5 Remove the external options connector bung

c

, if it is fitted.

6 On the inside of the radio lid place the foam seal

d

over the external options connec-

tor cavity

e

.

7 With the top side of the universal line interface board

f

facing the radio lid, guide the

external options connector

g

into the external options connector cavity.

8 Screw the external options connector to the radio lid using the two screw-lock fasten-

ers

h

.

9 Tighten the fasteners

to a torque of 0.9N·m (8lbf·in).

Important: The external options connector screw-lock fasteners must be tightened

correctly before screwing the universal line interface board onto the mounting posts

i

.

Solder link SMD resistor Description

LK1 1-2 R46 Connect normally open relay contact to /GATE OUT 1

LK1 2-3 R78 Connect normally closed relay contact to /GATE OUT 1

LK4 R62 Enable RX line audio from line TX pair (2-wire line operation)

LK5 1-2 R82 Connect 2-wire line transformer centre tap to RX gate relay output

LK5 2-3 R80 Connect 2-wire line transformer centre tap to optocoupler input

LK6 1-2 R77 Connect normally open relay contact to /PTT IN 1

LK6 2-3 R76 Connect normally closed relay contact to /PTT IN 1

LK7 R65 Connect +13.8V to relay common and /GATE OUT 2

LK8 R81 Connect half of optocoupler input and /PTT IN 2 to DC ground

LK9 R42 Select configuration profile 2 (if enabled in programming)

TA2922 TM8/TM9 Universal Line Interface Board Installation Instructions 5
© Tait Electronics Limited April 2010

10 Screw the universal line interface board to the mounting posts on the radio lid using

six M3x8 self-tapping screws

j

. Tighten the M3x8 screws to a torque of 1.9N·m

(17lbf·in)

Important: For the universal line interface board to be installed correctly in the radio’s

options cavity, the internal options connector loom

1)

must be looped in the way shown in

the diagram.

11 Plug the unattached end of internal options connector loom

1)

into the internal

options connector on the radio main PCB.

b

radio lid

g

external options connector

c

external options connector bung

h

screw-lock fasteners

d

foam seal

i

mounting posts

e

external options connector cavity

j

M3x8 self-tapping screws

f

universal line interface board

1)

internal options loom

b

c

e

h

i

j

1)

d

f

g

6 TA2922 TM8/TM9 Universal Line Interface Board Installation Instructions

© Tait Electronics Limited April 2010

12 Configure the line input and output audio level adjustments VR1 and VR2.

Audio levels are factory preset depending on the variant and do not need adjusting
unless you want to change from the factory default.

6/8-wire equipment setup

Test equipment set up as described below is required to measure and adjust line audio
levels in a 6-wire or 8-wire configuration with separate E&M keying.

2-wire equipment setup

Similar equipment set up is required to measure and adjust line audio levels in a 2-wire
configuration with centre tap or ‘phantom’ DC keying, though a 1:1 600 ohm line
transformer with a centre tap is required.

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

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 TX Key control

or depending on

board configuration

Ω

600 line terminater resistor
(2 x 1.2K resistor in parallel)

Ω

Ω

1:1 600 transformer with centre tap
eg Tait IPN 054-06003-00

+13.8V DC

TA2922 TM8/TM9 Universal Line Interface Board Installation Instructions 7
© Tait Electronics Limited April 2010

Setting line output level (VR1)

13 Connect the radio to the instruments as shown in the diagram.

14 Set the radio communications analyser to generate an on-signal frequency at a level of

-70dBm. Modulate with a 1kHz tone at a level of 60% system deviation (1.5kHz for
narrow band, 3kHz for wide band).

15 Ensure there is a 600 ohm termination resistor fitted across the two balanced line out

audio wires.

16 Monitor the audio level using the communications analyser and adjust RV1 on the

TA2922 interface to achieve the desired output level.

Setting line input level (VR2)

17 Connect the radio to the instruments as shown in the diagram.

18 Set the radio communications analyser to monitor the radios RF transmission.

19 Set the audio generator to produce a 1kHz audio tone at the desired level.

20 Activate the TX key input to the TA2922 interface to set the radio to transmit.

21 Monitor the transmitter deviation using the communications analyser and adjust RV2

on the TA2922 interface to achieve 60% system deviation (1.5kHz for narrow band,
3kHz for wide band).

Setting talk-through level (VR3)

Important: This feature cannot be used when the TA2922 is operating in 2-wire mode as

it may cause audio oscillations or instability.

22 Fit VR3 (IPN 040-06000-00) to the TA2922 interface by soldering in the three com-

ponent leads.

23 Align both the line in and line out audio levels as described in the previous section.

24 Disable the RF output of the communications analyser so that the radio is in an idle

state (not transmitting and not receiving a RF signal).

25 On the communications analyser, generate a 1kHz tone at the nominal audio level,

connect this to the TA2922 line input.

26 Ensure there is a 600 ohm termination resistor fitted across the two balanced line out

audio wires.

27 While continuing to generate the 1kHz tone, monitor the TA2922 line output on the

communications analyser.

28 Adjust VR3 on the TA2922 line interface to set the desired talk through audio level.

29 Refit the radio lid and top cover to the radio.

8 TA2922 TM8/TM9 Universal Line Interface Board Installation Instructions

© Tait Electronics Limited April 2010

Additional programming

Additional line interface parameters can be programmed using the TA2922 PGM-UIS
programming software.

The TA2922 universal interface board will not generally require programming with the
PGM-UIS application, as factory default settings will suit a majority of applications.

To change the factory defaults, download the PGM-UIS programming application from the
support area of the TaitWorld website http://www.taitworld.com/technical/.
The download is available from Custom Solutions > Programming Applications after
logging in.

To operate the PGM-UIS, refer to the TA2922 Service Manual (MAS-02922-01-xx). The
service manual is available from TaitWorld technical support website
http://www.taitworld.com/technical/ under Custom Solutions > Documentation ­Service.