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Operating Instructions
OPERATING FEATURES
2
2-9
Table 2-1. Error Codes
ERROR
CODE
MEANING ERROR CODE MEANING
ANALOG SELF-TEST ERRORS OPERATION ERRORS
1 200 VAC, Zero 30 AC funtions availible only with 8842A-09 True
RMS AC option.
2 700 VAC, Zero 31 mA AC or mA DC funtion selected while
REAR inputs selected.
3 mA AC, Zero 32
OFFSET selected with reading unavailible for
overrange.
4 mA DC, Zero 40 Computed calibration constant out of
range.(Previous cal may be wrong or there
may be a hardware problem.)
5 200 VDC, Zero 41 Calibration input out of acceptable range.
Check that input is correct. (Previous cal may
be wrong or there may be a hardware
problem.)
6 1000 VDC, Zero 42 Calibration memory write error. (Probably a
hardware problem.)
7 1000 VDC, Zero 50
Guard crossing error detected by In-Guard
µC.
8 20 VDC + 20MΩ 51 Calibration command not valid unless
calibration mode is enabled.
9 20 VDC + 2000 kΩ 52 Command not valid at this time.
10 2 VDC + 2000 kΩ 53 Invalid calibration value in Put command.
(Example: Sending a negative value during
ac calibration.)
11 200Ω, Overrange 54 Command not valid in calibration verification.
12 2 kΩ, Overrange 56 Variable inputs not allowed during A/D
calibration.Use prompted value.
13 20 kΩ, Overrange 60 Device-dependent commands not valid
during self-tests.
14 200 kΩ, Overrange 71 Syntax error in device-dependent command
string.
15 1000 VDC + X10 T/H + 20 MΩ 72 Guard crossing error detected by out Guard
µC.
16 200 VDC + 200 kΩ 73
Guard crossing error detected at power on or
CAL ENABLE switch on at power on.
17 200 VDC + 20 kΩ 77 IEEE-488 Interface self-test error.
DIGITAL SELF-TEST ERRORS
25 In-Guard µC Internal RAM
26 Display RAM
27 In-Guard µC Internal Program Memory
28 External Program Memory
29 Calibration Memory
NOTE: See the Maintenance section for a detailed description of self-tests.