User's Manual

Table Of Contents

RFI341 Radio Frequency Interrogator

8. Troubleshooting

8.1 Installation errors

The RFA3xx antenna is installed incorrectly with respect to the object

carrying the transponder, e.g., the relationship between the transmitted

power, antenna size and transponder form factor is unfavourable.

• The RFA3xx antenna is installed close to metal that de-

tunes the antenna circuit. This can be checked either by

the SWR measurement inside the device. To start this

the background function need to be interrupted. Than

the SWR bottom need to be switched. The LED bar

indicates the SWR status. In addition a beeper signals

with frequency the status (high frequency is good, low

frequency is bad). Tuning is possible by inside antenna

tunable capacitors.

• The trigger sensor is positioned incorrectly.

• Other interrogator antennas are causing interference.

8.2 Electrical Connection Errors

• Interfaces on the RFI341 are connected incorrectly.

8.3 Parameterisation Errors

• Functions are not adjusted to local conditions, e.g., communication

parameters for the host interface are set incorrectly.

• ISO or system settings are not in accordance with the transponders

used, e.g., wrong AFI used..

Troubleshooting