Santec PEM-320, Operation Manual

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POLARIZATION EXTINCTION RATIO METER PEM-320
11-1
11
Troubleshooting
If after checking the above, the unit is still not operating correctly please contact Santec's technical
support division.
Problem Possible Cause Remedy
Power cable is unplugged. Make sure the cable is plugged in.
Fuse blown.
No fuse.
Wrong supply voltage.
Measurement speed is set to 5Hz or
10Hz. Change measurement speed to
2.5Hz.
Connector polish does not match
units specifications. Check specification of unit and
optical connector.
Unable to use front
panel.
In GPIB remote mode.
If the GPIB remote LED is lit, press
local key to release the GPIB remote
mode. Note this function will not work
if the Front Panel lockout command
has been issued via GPIB.
GPIB address is not set correctly.
Press Local key and hold for 2
seconds to check GPIB address and
set if necessary.
Delimiter setting is incorrect. Check the delimiter setting.
Cable is not connected properly. Check the connection of the cable.
Communication protocol is incorrect. Check the communication protocol.
Delimiter setting is incorrect. Check the delimiter setting.
Cable is not connected properly. Check the connection of the cable.
Cable is not wired correctly.
Check the pin assignment of the
cable.
RS-232C Communication
is not possible.
Open the fuse holder cover on the
rear panel and check the supply
voltage and fuse.
Unable to switch on.
GPIB Communication is
not possible.
Unable to measure PER
values above 30dB.