Trouble Shooting
English, Revision 04, Date: 19.01.2015
47
7
Trouble Shooting
The following table contains a list of errors that might occur. For each error, a symptom
description is given. In the third column you will find a description of how to locate and
possibly correct the error.
If you should not be able to correct an occurring error, please use the table to locate
the source of the error as exactly as possible (nature of malfunction, at which point of
time did the error occur, etc.) before consulting us.
Error
Possible cause
Diagnosis/Correction
No system function
Even though a transpon-
der is located within
reception range, all out-
puts remain inactive
Power supply is not sufficient
Measure the voltage at the respec-
tively labeled clamps.
No contact is possible,
only unintelligible char-
acters are sent.
1. RS 422 T+ (R+) exchanged with
RS 422 T- (R-) by mistake
2. Signal ground not connected, a
too high potential difference
between antenna and receiver.
3. Wrong setting of transfer param-
eters
4. Wrong procedure.
1. Check the connections
2. Connect signal ground
3. Choose only 19200 or
38400 Bd, 8 bit, even parity.
4. Choose the correct procedure
with the PC and the system
monitor.
Inaccurate values at low
temperature.
System needs a certain warm-up
time in order to operate at sufficient
accuracy in low ambient tempera-
ture.
Wait until the system has warmed
up (approx. 5 minutes at -20
o
C).
Output values are not
reproducible, lack of
accuracy
Radio interference
Check value for S in the monitor
mode. If these are over ca. 50,
there could be interference in the
range of 64 kHz.
Transponders are
detected unreliably / no
reliable positioning
pulses
1. Interfering frequencies
2. The corresponding thresholds
(refer to Figure 20 on page 37)
are not correctly set
1. refer to above paragraph
2. Carry out the commissioning as
described in section 3 on page
10
Table 13
Trouble shooting
