8230 Optical Power Meter Operation Manual
A-1
APPENDIX
A.1 Trouble Shooting (Before Asking for Repair)
If a problem occurs in this unit, check the table below for the solution before asking for repair.
If the problem persists, contact an ADC CORPORATION sales representative.
Table A-1 Problem and Solution
No. Problem Possible cause Solution
1 Key operation is disabled. The key lock is set to ON. Set the key lock to OFF by referring
to 1. In Section “2.1.1”, “Function
Description.”
2 The display remains
unchanged.
The HOLD function is enabled. Disable the HOLD function by
referring to 6. In Section “2.1.1”,
“Function Description.”
The MAX function is enabled. Disable the MAX function by refer-
ring to 10. In Section “2.1.1”,
“Function Description.”
3 OL is displayed. Input power is too high. Reduce the input power.
The input value exceeds the maximum
value set in the specified manual
range.
Change to the automatic range.
4 Lo is displayed. The input power is too low in the dBm
mode.
If the manual range is set, change it
to the automatic range.
5 Err2 is displayed. The sensor is disconnected. Connect the sensor.
6 Err3 is displayed.
Sensor calibration data sum check error
Sensor calibration data read error
An incompatible sensor is connected.
Reconnect the sensor, which is
compatible, and turn on the power.
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