M8SL2-00-002-812 Installation and Configuration D3.15
© Copyright Tait Electronics Limited August 2004. All rights reserved.
3.2.4.4 Line-Out Level
The Line-Out Level can be set up in two ways:
• On the T803 in Level Configuration Mode
• Using PGM800Win programming software (version 4.02 or later).
Using Level Configuration Mode (T803 firmware version 2.07 or later):
1. Set the T803 into Line-Out Level Configuration Mode (See Section 3.2.3).
2. Use the RF Test Set to generate an on-channel signal to un-mute the receiver.
3. Modulate the RF carrier with a 1020Hz tone at 60% full system deviation, adding
CTCSS tone if necessary (ensure that CTCSS tone is removed from the receiver
audio output by selecting the correct links inside the receiver).
4. Monitor the T803 Line-Out level and adjust by pressing the Monitor button
(increases the level) or the Mode Toggle button (decreases the level) until the level
is acceptable at the dispatch console.
Note: The monitor speaker is forced on in this mode so the test-microphone may
be used as an intercom to communicate to the dispatcher room (See Section
3.2.2).
Using PGM800Win software:
1. Determine the input level required at the dispatch console. This may be a preset or
default value specified in the console’s manual or a value programmed by the
operator.
2. Determine the actual line-loss between the console and the T803.
3. Calculate T803 Line-Out Level as follows:
T803 Line-Out Level = console input level (dBm) + Line-loss (dB)
4. Program the T803 with the calculated level.
Example case:
Console input level = –13dBm
Measured Line loss = 6.5dBm
T803 Line-Out level = –13 + 6.5 = –6.5dBm
3.3 Fault Finding
1. Connect the T803 to its companion dispatch console via the leased line. Check that
speech sent from the console can be heard on the T803 speaker (un-mute speaker
if required).
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