Calibration Problem with PCSGU250

Hi,
I installed new driver and PcLab2000LT v1.08 with Windows XP (2 Computers with the same Problem). At the first time, Calibrate is automatic started. After the Calibration, a warning “Communication error. Calibration failed” will show.

The value of my “Calibration.log” is:

[code]Calibration results:

CH1 offset at 3V/div : 161 OK
CH2 offset at 3V/div : 161 OK
CH1 offset at 1V/div : 101 FAIL
CH2 offset at 1V/div : 101 FAIL
CH1 Y-position low 66
CH1 Y-position mid 66
CH1 Y-position high 66
CH2 Y-position low 60
CH2 Y-position mid 60
CH2 Y-position high 60[/code]
How can I do to fix the Problem?
Thanks a lot for your answer.

You may try with the other driver in the folder PCSGU250Driver_WinUSB.
When installed, you can use the Device Manager to check the driver version is 1.0.0.0, dated 05/21/2008.

One problem may be the USB power capacity. You may try the other USB sockets of the PC.

If still same problem, then the PCSGU250 may be defective.