8250A Optical Power Meter Operation Manual
A.2 Error Messages
A-2
A.2 Error Messages
This section describes the error messages that are displayed while this instrument is used.
Table A-2 Self-Test Item List
No.
Test item
Test method
When an error
occurs.
When
turning on
the power.
(Test
sequence)
Remote
Key
operation
Others
Display
Remote
1
Turning on all segments of
the display on the panel
1
Visual
check
2
Sensor connection check
2
Constant
monitoring
Err 2
3
Sensor calibration data sum
check
3
When
re-connecting
the sensor.
Err 3
4
ROM sum check
4
Err 4
5
RAM read/write check
5
Err
5
6
Power meter calibration
data sum check
6
Err 6
7
Parameter sum check
7
Err
7
8
Panel RAM/Communica-
tion check
8
Err
11
9
AD operation check
When
measuring.
Err 8
10 USB communication error
While commu-
nicating by the
USB.
Err 9
11
Flash ROM memory writing
check
When writing
into the
memory.
Err 12
12 An overload is generated in
any range while
[ZERO]
is
executed.
While
executing
[ZERO]
.
Err 1