ZKTeco White LCD Series, Руководство пользователя

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11. Troubleshooting
11. Troubleshooting
Q: Some users’ fingerprints sometimes can’t be verified.
A: Cause
: The following circumstances result in the staff failed to use
fingerprint for verification. The fingerprint quality is poor.
1)
Some fingers the fingerprint is smooth by rub-down.
2)
On the finger the drape are too many, frequently change.
3)
On the finger sheds skin seriously.
Measure
: You’d better select fine fingerprint (less crinkle, no
desquamation, clear image) when enroll fingerprint, make your
finger touch fingerprint sensor with larger area, a comparable test
should be made after enrollment, we suggest you enroll more
fingerprints. By the way our device supports 1:1 match method and
password identified function, you could choose one of them.
Q: When the fingerprint devices fail to communicate, what reason
causes it?
A:
The possible reason:
1)
The communication port configuration is not correct. The selected
connect communication port is not the COM port which is actually
used.
2)
Baud rate of between the computer communication port and the
fingerprint device setting value are different.
3)
The fingerprint device has failed to connect with the power source
or the computer.
4)
The fingerprint device has connected but not starting up.
5)
The serial number of linked terminal is not correct.
6)
Data line or converter fails to communicate.
7)
The computer COM port breaks down.
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