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Symptoms
One Transponder in
communication fail on
ProxLink Radio Module link.
One Transponder in
communication fail on
ProxLink Radio Module link.
(Cont'd)
Probable Cause
D. SE485 module.
E.
Cable from SE485.
F.
ProxLink Radio Module.
A.
Transponder.
B.
Cable from ProxLink Radio
Module to Transponder.
C. ProxLink Radio Module.
D. SE485.
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Page 70 of 142
Possible Solution
D. Check wiring between SE485 and computer,
and SE485 at ProxLink Radio Module.
Transmit should be going to receive and
receive should be going to transmit
(RX+ to TX+, RX- to TX-).
E.
Cable from SE485 to computer must be
straight through 25 pin to 25 pin or 25 pin to 9
pin depending on your serial port on the back
of the computer. Do not use cable labeled for
printer or null modem cable. Replace cable if
bad. Check cable between SE485 and
ProxLink Radio Module. Replace if bad.
F.
Check programming for central console
ProxLink Radio Module to be sure it is correct.
If everything else checks OK, replace
ProxLink.
A.
1. Check slide switch on Transponder to
make sure it is in the RS232 position.
2. Check dip switch address for Transponder
to be sure it corresponds with Transponder
data base.
B.
Replace cable.
C. 1. Check power to ProxLink. Make sure radio
power LED is lit.
2. Check antenna connection to ProxLink
Radio Module.
3. Check programming for ProxLink Radio
Module.
4. Radio out of range or not in line of sight of
Central Console antenna.
5. Ice on antenna.
6. If antenna is remote from ProxLink use
RG8U cable to prevent dB loss.
7. Replace ProxLink Radio Module.
D. 1. Check power to ProxLink to SE485.
2. Make sure slide switch on Transponder is
set for SE485.
3. Check wiring from Transponder to SE485
(RX+ to TX+, RX- to TX-). Make sure transmit
goes to receive and receive goes to transmit.
4. Replace SE485 module.
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