User Guide

PLA Series Operating Manual
-68-
5-3 Troubleshooting
1. Description: please read carefully the operating instructions if certain
problems or doubts are encountered when logic analyzer is employed.
2. Operating questions and countermeasures:
Q1: Unable to execute the main application or can only use display mode.
please check by the following procedures:
Ans: 1. Check if the driver is installed successfully.
2. Make sure that USB cable and PLA USB port are well connection.
3. Try anther USB device. If it OK, means the USB port is normal. If
not OK, means the USB port maybe damaged.
4. Try another USB cable.
Q2: Why is the power indicator (red) highlighted after startup, but no
on-screen display exists?
Ans: 1. Make sure the each channel and DUT has been connected properly.
2. Make sure the grounding cord of measurement channel is linked to
the ground joint of the DUT correctly.
3. Make sure that the setting of trigger level is t to the signal level of
the DUT.
4. Make sure that the setting of trigger level is 4 times higher than the
DUT.
5. Make sure that the setting of the trigger is accurate. If the signal
does not t to the setting of trigger, please simplify the conditions of
trigger or modify the condition.
6. Make sure if the setting of trigger counter setting is too many times.
7. If use external sampling signal to sampling, the counters of sampling
maybe not enough. In this situation, please try to capture the internal
sampling signal to verify it normal or not, if it shows normal, we can
be sure the result of the above are correct.
* If you still have problem, do not hesitate to contact to our customer service dept.
Let us to help you to solve the problems.