M830 00 202 A3 Pages T800/T800 SERIES 2 MANUALS/M830 202/Pages F2.1 F2.2

T800/T800 SERIES 2 MANUALS/M830-00-202/Pages F2.1-F2.2 Pages F2.1-F2.2

T800/T800 SERIES 2 MANUALS/M830-00-202/Pages F2.1-F2.2 Pages F2.1-F2.2

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T836/837 Installation

M830-00

2
2.1

F2.1

T836/837 Installation

2.2

Rack Mounting

The D-range input and output connections are shown in Figure 2.3 and Figure 2.4.
Ensure that the cables are not subjected to any stresses due to tight bends or incorrect
lengths.

The T836 transmitter and T837 exciter are designed for use in a standard 483mm rack
frame using a Tait T800 Series II guide. The guide is securely mounted to the rack frame
with front and rear retaining screws, and the T836/837 is secured into the guide with
two front panel mounting screws. Figure 2.1 shows a standard, double module guide
which can also be fitted with an optional backplane PCB to locate and mate the rear
D-range connector(s). For more information on available guide kits, refer to the T800
Ancillary Equipment Service Manual or your nearest Tait Dealer or Customer Service
Organisation.
A rear mounted N-type connector is used for RF output on the T836/837, while all DC,
audio and control connections are via the rear mounted D-range connector, D-range 1
(PL100). An additional rear D-range connector (T800-03-0000) can be fitted when
remote multichannel operation, or additional control or low frequency lines are
required (refer to Figure 2.2).
Rack Mounting Holes

Rack Wiring

Make sure the RF coax cable to the N-type connector is free from sharp bends or twists.
If access to the rear of the rack frame is restricted, the cable should be long enough to
allow the chassis to be fully withdrawn from the guide.
Sensitivity: -30dBm
10.8 to 16V DC
+13.8V
High isolation
keying option:
6 to 50V DC

9
10

To key transmitter:
high impedance
<0.7V = key

Opto Key +

11

Opto Key -

12

Tx Key

13
14
15

Gnd

! Figure 2.1 T800-41-0002 Double Guide Kit

Short together for
normal operation

1

Line I/P1

2

Line I/P2

3
4

Line I/P3
Line I/P4

5

Tx Enable

6

Audio 2

7

Serial Com

8

CTCSS

Power supply, -ve earth

To key PA, open
collector
External/auxiliary
audio processing
Can
Can be
be configured
configuredas
as
Audio
Audio 11 by
byinternal
internallink
resistors
if required.
link resistors
if required
Refer to Part I.

External CTCSS input:
1kHz deviation @150Hz (500mV rms)

Rack Mounting Holes
Front Panel
Mounting Holes

Figure 2.3 T836/837 D-Range 1 Wiring - Rear View
Aperture For RF
Connectors

Slots For D-Range
Connectors

Rack Mounting Holes
Optional Backplane PCB
Mounts On Rear Of Guide

Rack Mounting Holes

Open drain type;
capable of sinking
2.25mA via 2k2Ω;
Vds max. = 5V

Front Panel Mounting Hole

1

TX RELAY DRV

9

CTCSS DISABLE

10

CH_SLCT 7

11

SERIAL COM

12

AUX-OUT 0

13

AUX-OUT 1

14

AUX-OUT 2

15

CH_SLCT 0

2

CH_SLCT 1

3

CH_SLCT 2

4
5

CH_SLCT 3
CH_SLCT 4

6

CH_SLCT 5

7

CH_SLCT 6

8

GND

! Figure 2.2 T836/837 Chassis Connectors

Figure 2.4 T836/837 D-Range 2 Wiring - Rear View
(standard T800-03-0000 kit)
N-Type Connector

Space For Optional
D-Range Plug
(D-Range 2)

Copyright TEL

D-Range Plug
(D-Range 1)

Note:

Figure 2.4 above shows the standard pin allocations for the T800-03-0000
auxiliary D-range kit. A T800-03 auxiliary D-range kit is also available for
special applications requiring custom internal wiring.

23/07/99

F2.2

T836/837 Installation

2.3

Power Supply

M830-00

If a power supply other than an appropriate Tait model is used, ensure that it is capable
of providing enough current to drive the T800 system and is also free from excessive
ripple or noise.
The system should be protected by the use of appropriately rated fuses in the power
supply.
Note:

It is particularly important when the prime power source is a battery that
fuses be employed in all supply lines.

2.4

Reverse Polarity & Overvoltage Protection

A crowbar diode is fitted to all T836 transmitters and T837 exciters for protection
against connection to a power supply of incorrect polarity. It also provides overvoltage
protection from voltage transients caused by lightning strikes.
Note:

31/03/01

A fuse must be fitted in the power supply line for the diode to provide effective protection.

Copyright TEL



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Modify Date                     : 2002:08:05 10:41:39+10:00
Create Date                     : 2002:08:05 10:41:17+10:00
Title                           : M830-00-202 A3 Pages
Subject                         : T830 SII Service Manual 136-174MHz
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