Fluke 8508A User Manual page 189

Device-Dependent Errors (DDE)
A Device-Dependent Error is generated if the device detects an internal operating fault
(e.g., during self-test). The DDE bit (3) is set true in the Standard-defined Event Status
Byte, and the error code number is appended to the Device-Dependent Error queue.
In remote mode operations, the error is reported by the mechanisms described in the sub-
section of Chapter 4 that deals with status reporting, and the queue entries can be read
destructively as LIFO by the Common query command DDQ?.
In local mode operations, the DDE status is checked at the end of the operation (e.g., Cal,
Zero, Test). If true, an error has occurred, and the content of the last entry in the queue is
displayed on the front panel.
If both bus and front panel users attempt to read the queue concurrently, the error data is
read out destructively on a first-come, first-served basis. Thus one of the users cannot
read the data on one interface as it has already been destroyed by reading on the other.
This difficulty should be solved by suitable application programming to avoid the
possibility of a double readout. Ideally the IEEE 488 interface should set the instrument
into REMS or RWLS to prevent confusion. The bus can ignore the queue, but the front
panel user will have to read it to continue.
Device-Dependent Error Lists
Device-dependent errors are associated mainly with test and calibration operations. The
error numbers in the following pages are therefore listed in these categories. There is
some overlap.
External Calibration Operations
Correction Errors
2000- Error During Zero Cal
2001- Error During Gain+ Cal
2002- Error During Gain- Cal
2003- Error During HF trim Cal
2004- Error During Input Zero
2005- Error During LoI Zero Cal
2006- Error During LoI Gain Cal
2008- Error During A to D Cal
2010- Error During Frequency Cal
2012- Error During DCcp Cal
2025- Error During HiV Lin Read
2026- Error During HiV Lin Calc
Corruptions
2014- Serial Number Corrupt
2015- Cal Due Date Corrupt
2017- Bus Address Corrupt
2018- Line Frequency Corrupt
2020- Invalid Corrections (ram)
2021- Calibration Corrupt
2022- NV RAM Write Failure
Micellaneous
2109- Bad Data from Analog Sys
2022- NV Ram write failure
2023- Engine – Load factor err
2024- Engine – Store factor err
Appendix
Error Codes and Message
A
A-3