SPA-900 Series User Manual 79
3.2 Troubleshooting
The commonly encountered failures and their solutions are listed below. When you encounter
those problems, please solve them following the corresponding steps. If the problem remains still,
please contact
COM-POWER
and provide your device information (
System
->
System Info
).
1
．
The screen is still dark (no display) after power on:
(1) Check whether the fan is running:
— If yes, the connection of the internal screen cable may be loose.
— If not, the instrument has failed to start up and please refer to step (2).
(2) Check the power:
— Check whether the power supply has been connected correctly and the power switch has been
turned on.
— Check whether the power fuse is burned. If a new fuse needs to be installed, please use a
specified fuse
2
．
The key is unresponsive or gives a wrong response:
(1) Press all the keys at the front panel to check if all of them are normal after power on.
(2) Press
System
->
Self-Test
->
Key Test
to check if all the keys are working properly.
(3) If a key is not working, the numeric keyboard connection might be loose or the numeric
keyboard is broken. Do not disassemble the instrument by yourself and contact
COM-POWER
.
3
．
The spectrum lines on the screen do not update for a long period of time:
(1) Check whether the screen is locked; if so, press
Esc
to unlock it.
(2) Verify whether all the trigger conditions have been met and whether there is a valid trigger
signal.
(3) Check whether the analyzer is in single sweep.
(4) Check whether the current sweep time is too long.
4
．
Wrong measurement results or poor precision:
To calculate the system errors and check the measurement results and precision, refer to the
introductions in “
Specifications
”. To reach these specifications, please:
(1) Check whether all the external devices are successfully connected and are working normally.
(2) Get some knowledge of the signal under measurement and set appropriate instrument
parameters.
(3) Make measurements under proper conditions; for example, warm-up the instrument
appropriately and operate the instrument under the specified environment temperature.
(4) Calibrate the instrument regularly to reduce or avoid errors that might occur over time.
— If you need a specific calibration after the stated calibration period, contact
COM-POWER
or get
paid service from authorized measurement agencies.
— The analyzer provides auto calibration function. If required, press
System->Calibration->Auto Cal
and select “
Open
”. The instrument will perform self-calibration
Distributed by: Reliant EMC LLC, +1 408 916
‐
5750, info@reliantemc.com, www.reliantemc.com
