If the device does not have the appropriate RF settings,a hardware malfunction causes this problem. f this is the case with your device, we advise trying to reset the device RF parameters first.
1) The first group of commands applies to the hardware RF field setup.
Press the key 9 first, and write down your reader current settings.
Further, start changing the readers’ values one by one (as listed on the software menu), while moving the card up and down for every change. This way you will be able to detect the combination of the setting that gives the best result.