When The Device Have Read A Card, The Device Does Not Response Or A Different Card Number Appears; Please Check If A Reader Is Good; Please Check If Wiring Between A Reader And The System; Please Check If Software Settings Are Good - IDTECK iTDC User Manual

6 When the device have read a card, the device does not
response or a different card number appears.
6.1

Please check if a reader is good.

1. Check input power of the reader.
Check if LED blinks when the reader reads a card.
2. Check if the reader is good.
Disconnect the reader from the system and measure output terminal of the reader using
a oscilloscope.
6.2

Please check if wiring between a reader and the system.

See [Product Installation] > [Reader Wiring] of the manual and check wiring between the
reader and the device.
If you use a separate power for a reader not connecting to the device, GND of the
reader must be connected to GND of the device.
6.3

Please check if software settings are good.

1. In the case of using iTDC, check if controller definition of a software is set to iTDC-SR. If
it is iTDC-SR, change it to iTDC.
2. In the case of using iTDC-SR, check if controller definition of a software is set to iTDC. If
it is iTDC, change it to iTDC-SR.
6.4

Remove noise.

1. Shield wire and extra wire of cable to GND.
2. Use repeater.
3. See [PREPARATION OF INSTALLATION] > [RECOMMENDED CABLE TYPE AND
PERMISSIBLE LENGTH OF CABLE] and check distance between a reader and the device.
Troubleshooting p.135
iTDC