Open-Loop Piezo Controllers
TTN011225-D02, Rev C July 7, 2015
Chapter 10 Troubleshooting
The following table describes some typical problems that may be encountered
while using the MDT69xB and possible solutions to these problems.
Problem Solution
Unit does not turn on when
switching the power switch to
the ON position.
1. Make sure the AC line cord is fully inserted
into the AC input receptacle and plugged
into an outlet providing 100 to 240 VAC.
2. Fuse(s) may be open. Refer to Section 4.2
for information on replacing open fuses. If
the problem persists, please return the unit
to Thorlabs for evaluation.
I cannot adjust the voltage.
1. Make sure the correct channel is selected.
Adjust the voltage by pushing in the INT
knob. Adjustment can only occur when the
display is blinking.
I can’t connect to the
MDT693B/MDT694B over the USB
port.
1. Make sure the unit is turned on prior to
connecting the USB.
2. Power off unit, remove AC cord, remove the
USB cable, reattach AC cord, power on unit
and reattach the USB cable.
3. Make sure USB drivers are installed.
The output voltage is 0 V even
when adjusting.
1. Turn the power off.
2. Unplug your piezo device.
3. Turn the unit back on and retest.
4. Piezos tend to fail as a short circuit, causing
the output current limit protection circuit to
attenuate the output.
To Next Page
Loading...
Need help?
General
