Tait T800 SL2 25W, Service Manual

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M8SL2-00-002-812
Installation and Configuration D3.3
© Copyright Tait Electronics Limited August 2004. All rights reserved.
3.1 Installation
3.1.1 Backplane Configuration
To support the T803-02 Tone Remote an X800-56-PCB3 backplane should be fitted to the
T800 SL2. The backplane should be configured as described in the following table.
These are the default factory settings (for SL2 with T803).
Link Setting Function Notes
LN1 and LN2 Not fitted as standard Talk-through audio path (balanced)
LN3 Not fitted as standard Talk-through Rx-gate to Tx-Key
LN4 Link pins 2 – 3 For Serial Comms with the T803 See SW2 settings below
LN5 and LN12 Not required for T803
Associated with TX-Relay-Driver out-
put from transmitter
LN6 Not required for T803 Determines I/O on pin 11 of SK6 See Section 6.2 in Part G
LN7 Not required for T803 External CTCSS Audio to Transmitter
LN8
Link pins 1 – 2
Unbalanced Rx Audio (‘Audio1’) to
T803. Not to be used when CTCSS is
present on RX audio as internal CTCSS
filtering cannot be applied to this path.
For CTCSS use the option below. Adjust level using RV2.
Level to T803 independ-
ent of Rx Line Level
control. See Section
3.2.4.3
Link Pins 2 – 3 and Pins 4
– 5 (recommended)
Changes the balanced Rx Line audio
output to unbalanced for the T803. This
option should be used when CTCSS is
present on RX audio so that the internal
CTCSS filtering can be applied.
Level to T803 controlled
by RX Line Level con-
trol. Note: Balanced Rx
to TX audio becomes
unavailable with this
setup. See Section
3.2.4.3
LN9 Link pins 2 – 3 FWD power alarm signal to T803. Internal alarm board
must be fitted to T854.
See Section 3.10 in Part
C
LN10 Link pins 2 – 3 REV power alarm signal to T803.
LN11 Fitted RX CTCSS disable See Section 6.2 in Part G