AS 682
Description, Operation and Maintenance Maintenance and Repair
ADS−B
7−21Ed. 10.07
JUMPER POSITION DEFINITION REMARKS
X3 set
open
12 VDC to ADS−B RX antenna enabled
12 VDC to ADS−B RX antenna disabled
default
−
X5 set
open
Setting of attenuation 0 dB
Setting of attenuation −15 dB
default
−
SWITCH POSITION DEFINITION REMARKS
SW2
/1 to /4
/1
/2
/3
/4
all open
if closed
if closed
if closed
if closed
SW2 is used to adjust the DC offset of the
RXU output signal. The offset value can be
set in 16 combinations setting switches 1 to
4. Basic value is 0 mV (all open), maximum
value is 750 mV (all closed, "ON").
The individual values are:
0 mV
50 mV
100 mV
200 mV
400 mV
Default setting
add to other switch settings
add to other switch settings
add to other switch settings
add to other switch settings
1 Receiver Unit (RXU) 83142 71502 2 of 2
NOTE: Jumper X3 needs to be removed when the RXU is intended to be used without the AAU, or other equipment is connected to it.
If the RXU should be operated without AAU, a separate dedicated 1090 MHz bandpass filter is needed.
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