7. Troubleshooting
Typical issues that may occur when using your spectrum analyzer:
◼ Power on malfunction
◼ No signal displays
◼ Wrong measurement results or poor frequency or amplitude
precision.
1. Power on malfunction
Power on malfunction can include a situation where the screen is
still dark (no display) after switch on.
If the screen is still dark after power on, please check:
1) If the power supply has been connected correctly and if the
power supply voltage range is within the specification.
2) If the power switch has been turned on.
2. No signal displays
If there is no signal display at any wave band. Please try the
following: set a signal generator at 30 MHz frequency and -10
dBm power and connect it to the spectrum analyzer RF input
connector. If there is still no signal display, there may be a
problem with the spectrum analyzer hardware circuit. Please
contact us for service.
3. Wrong measurement results or poor signal frequency
precision
If the display contents shake a lot or the frequency readout
exceeds the error range during measurements, check if the
signal source is stable. If so, check if spectrum analyzer
reference is precise. Select internal or external frequency
reference according to measurement conditions: press FREQ
bottom softkey → [Freq Ref Int Ext]. If the frequency is still not
precise, then the spectrum analyzer LO has lost its phase lock,
please contact us for service.
4. Wrong measurement results or poor readout amplitude
precision
If signal amplitude readout is not precise, perform a calibration. If
amplitude readout is still not precise, then it may be a problem
with internal circuit, please contact us for service.
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