Fluke 8508A 8½ Digit Reference Multimeter
These instruments can produce or measure LETHAL VOLTAGES at their terminals. Test should only be performed by qualified technicians.

Caution: These instruments can produce or measure lethal voltages at their terminals. Testing should
only be performed by qualified technicians

View Error Codes
for this device
Error codeDefinition
Error Messages
Fatal System Errors
9000System Kernel Fault
9001Run Time System Error
9002Unexpected Exception
9003PROM Sumcheck Failure
9004RAM Check Failure
9005Serial Interface Fault
9006Option Test Failure
9007Unknown Engine Instruction
Recoverable Errors
List of Execution Errors
1000EXE queue empty when recalled
1001Option not installed
1002Calibration disabled
1005Input Zero not allowed in Ratio
1007Data entry error
1008Must be in AC Function
1010Divide-by-zero not allowed
1012No more errors in list
1013Data out of limit
1014Illegal Range/Function combination
1015Command allowed only in Remote
1016Not in Special Calibration
1021Test not allowed when Cal enabled
1024Illegal Range/Input Combination
1025Auto not available in Tru ratio
1026Probe identity unrecognized
1027Input Zero not allowed in PRT
1028Only allowed in Voltage function
1029Scan modes not allowed in PRT
1030Scan modes not allowed in ACI/DCI
10314wV not available via rear input
1032Input Zero not allowed in Cal
1033Calibration not allowed in PRT
1034PRT Ceof Limit @ a+, b+, c+ a-, b-, c-
1035Cannot edit the default PRT
1036Block or Rolling average required
External Calibration Operations
Correction Errors
2000Zero Correction Error
2001Gain+ Correction Error
2002Gain- Correction Error
2003HF trim Correction Error
2004Input Correction Error
2005LoI Zero Correction Error
2006LoI Gain Correction Error
2008A to D Correction Error
2010Frequency Correction Error
2011DAC Correction Error
2012Standardise Error
2025Error During HiV Lin Read
2026Error During HiV Lin Calc
2027Error During 2wr Ohms Calc
Corruptions
2014Serial Number Corrupt
2015Cal Due Date Corrupt
2017Bus Address Corrupt
2018Line Frequency Corrupt
2020Measurement Corrections Corrupt
2021Measurement Corrections Invalid
2022NV RAM Write Failure
Micellaneous
2109Bad Data from Analog Sys
2022NV Ram write failure
2023Engine — Load factor err
2024Engine — Store factor err
DC VOLTS
2101Main Ref Check
21016.2V Ref Check
2201100mV Range Zero Check
22111V Range Zero Check
222110V Range Zero Check
2231100V Range Zero Check
2241100mV Range Positive Gain Check
2251100mV Range Negative Gain Check
22611V Range Positive Gain Check
22711V Range Negative Gain Check
228110V Range Positive Gain Check
229110V Range Negative Gain Check
2301100V Range Positive Gain Check
2311100V Range Negative Gain Check
DC CURRENT
2401100SA DC Range: Zero Input Check
2411100SA DC Range: 100SA Input Gain Check
24211mA DC Range: Zero Input Check
24311mA DC Range: 1mA Input Gain Check
244110mA DC Range: Zero Input Check
245110mA DC Range: 10mA Input Gain Check
2461100mA DC Range: Zero Input Check
2471100mA DC Range: 100mA Input Gain Check
24811A DC Range: Zero Input Check
24911A DC Range: 100mA Input Gain Check
AC CURRENT
25011mA AC Range: Zero Input Check
25111mA AC Range: 1mA Input Gain Check
RESISTANCE
2601Follower Offset Check
2611Follower 100mA Output Check
2621Follower 10mA Output Check
2631Follower 1mA Output Check
26413.0V Clamp Check
26516.7V Clamp Check
266127V Clamp Check
2671Current Sink Clamp Check
268110SA Current Sink and Follower 10V Output Check
26911SA Current Sink Check
2701100nA Current Sink Check
271110nA Current Sink Check
2721HV Ohms Follower Offset Check
2731HV Ohms Follower Output Current Check
2741HV Ohms Output Voltage and 240V Clamp Check
AC VOLTS
2801100mV AC Range: Zero Input Check
2811100mV AC Range: +179mV DC Input Checks at PreAmp Output
2821100mV AC Range: -179mV DC Input Checks at PreAmp Output
28311V AC Range: Zero Input Check
28411V AC Range: +993mV DC Input Checks at PreAmp Output
28511V AC Range: -993mV DC Input Checks at PreAmp Output
28611V AC Range: +993mV DC Input Checks at RMSConverter Output
28711V AC Range: -993mV DC Input Checks at RMSConverter Output
288110V AC Range: Zero Input Check
289110V AC Range: +9.78V DC Input Checks at PreAmp Output
290110V AC Range: -9.78V DC Input Checks at PreAmp Output
2911100V AC Range: Zero Input Check
2921100V AC Range: +9.78V DC Input Checks at PreAmp Output
2931100V AC Range: -9.78V DC Input Checks at PreAmp Output
29411000V AC Range: Zero Input Check
29511000V AC Range: +9.78V DC Input Checks at PreAmp Output
29611000V AC Range: -9.78V DC Input Checks at PreAmp Output

Fluke 8508A 8½ Digit Reference Multimeter

The 8508A from Fluke is a high performance, 8½ digit bench top multimeter. It can measure direct voltage and current, alternating voltage and current, resistance, and temperature with an external PRT. A rear input option is available for front/rear ratiometric measurements on voltage and resistance functions.

Common Failures

  • Misapplication of voltage or current — The 8508A can be damaged by sourcing high voltage into resistance or current functions.

Test Instructions

These instruments can produce or measure lethal voltages at their terminals. Testing should only be performed by qualified technicians.

Any failure or operational deficiency information available allows us to provide the best service. Please include any information available about failures and what function the instrument was in prior to failure.

Testing Steps

  • If the instrument is smoking or has a bad smell coming from it turn it off immediately and contact us for further instruction.
  • Power up the 8508A and let it warm up for 30 minutes. Run the circuits test from the test button menu. If a failure occurs, note the error number/description and contact us. There are often multiple errors. Report as many as you reasonably can.
  • For any functional or calibration errors not detected by the circuits test operations, contact us for repair.
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