User's Manual

TD 92082GB
PRELIMINARY
7 May 2012 / Ver. PB7
Installation Guide
LF Location Units
4
2.2 L951A1 Antenna Unit
1
2
J01
S05
1
SW01
Figure 3. Circuit board L951A1 Antenna Unit.
Jumpers
S02: 1 – 2: When using inte
rnal antenna (L04).
2 – 3: When connecting L951PA Power Amp
lifier or external antenna A1,
A2, A2/2, or loops to channel 1.
S03: 1 – 2: Channel 2 sends sam
e code as channel 1.
2 – 3: Channel 2 sends code + 1.
S04: 1 – 2: When channel 1 only is being used.
2 – 3: When channel 2 is being used.
Switches
SW01 and SW02: To set the location code.
SW03: Reed relay – for tamper protection
SW04: Pin 1, ON: Indicates that immediate transmission is required when the
Ala
rm Transmitter receives the location code.
Pin 2 should be set to OFF position (
ON indicates test mode – only used
in production).
SW05: Pin 1 controls channel 1:
OFF: When feeding loops.
ON: When using L951PA, L951A1, L951A2 or L951A2/2
Pin 2 controls channel 2:
OFF: When feeding loops from channel 2.
ON: When using L951PA, L951A1, L951A2 or L951A2/2