Wavetek/Datron Multi-Product Calibrator
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
9099Undefined Fatal Error
Recoverable Errors
List of Execution Errors
1000EXE queue empty when recalled
1001Option not installed
1002Calibration disabled
1003Ratio/Function combination not allowed
1004Filter incompatible with Function
1005Input Zero not allowed in Ratio
1006Calibration not allowed in Ratio
1007Data entry error
1008Must be in AC Function
1009Pass Number entry error
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
1017Calibration not allowed with Math
1018Key not in the Cal Enabled position
1019Spec not compatible with Function
1020Internal Source Cal required
1021Test not allowed when Cal enabled
1022No parameter for this Function
1023Input zero not allowed in ACI
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
2009Reference Error
2010Frequency Correction Error
2011DAC Correction Error
2012Standardise Error
Corruptions
2013Key/Pass# flags Corrupt
2014Serial Number Corrupt
2015Cal Due Date Corrupt
2016Self-corrections Flag Corrupt
2017Bus Address Corrupt
2018Line Frequency Corrupt
2020Measurement Corrections Corrupt
2021Measurement Corrections Invalid
2022NV RAM Write Failure
Non-volatile RAM Checksum Errors
2110Primary NV Checksum Error
2111Secondary NV Checksum Error
2112Input Zero NV Checksum Error
2113Frequency NV Checksum Error
Others
2114Switches not optimum
2115Requires internal source calibration
Self Calibration and Internal Source Calibration Operations
Reference Ratio Tests
2121Reference zero noise.
2122Reference zero magnitude.
2131Ref 2 noise.
2132Ref 2 magnitude.
2141Ref 1 noise.
2142Ref 1 magnitude.
2143Ref 1 : Ref 2 Magnitude Ratio drift.
2151Positive Reference noise.
2152Positive Reference magnitude.
2153Negative Reference noise.
2154Negative Reference magnitude.
2155Ref+ : Ref- Magnitude Ratio.
2156Ref+ : Ref- Magnitude Ratio drift.
Fuse Tests
2101Fuse is open circuit.
2102Fuse fault other than o/c
Memory Tests
The following NV memory checksums
do not agree with their stored values.
2110Primary.
2111Secondary.
2112Input Zero.
2113Frequency.
DC Voltage Tests
True Zero Measurements
2161DC 10V range zero noise.
2162DC 10V range zero magnitude.
2163DC 10V range zero drift.
2171DC 1V range zero noise.
2172DC 1V range zero magnitude.
2173DC 1V range zero drift.
2181DC 100mV range zero noise.
2182DC 100mV range zero magnitude.
2183DC 100mV range zero drift.
2191DC 100V range zero noise.
2192DC 100V range zero magnitude.
2193DC 100V range zero drift.
2201DC 1000V range zero noise.
2202DC 1000V range zero magnitude.
2203DC 1000V range zero drift.
Negative Gain Measurements
(Offsets {Zero} and References)
2211-1V offset noise.
2212-1V offset magnitude.
2213-1V reference noise.
2214-1V reference magnitude.
2215-10V offset noise.
2216-10V offset magnitude.
Positive Gain Measurements
(Offsets {Zero} and References)
222110V offset noise.
222210V offset magnitude.
222310V loaded offset noise.
222410V loaded offset magnitude.
22311V offset noise (atten. 10V).
22321V offset magnitude (atten. 10V).
2233100mV offset noise (atten. 10V).
2234100mV offset magnitude (atten. 10V).
22411V offset noise.
22421V offset magnitude.
225110V +Ref noise.
225210V +Ref magnitude.
225310V +Ref magnitude drift.
226110V loaded gain noise.
226210V loaded gain magnitude.
226310V loaded gain magnitude drift.
22711V Range 100mV signal noise.
22721V Range 100mV signal magnitude.
22731V Range 100mV signal magnitude drift.
2281100mV Range 100mV signal noise.
2282100mV Range 100mV signal magnitude.
2283100mV Range 100mV signal magnitude drift.
22911V reference noise.
22921V reference magnitude.
22931V reference drift.
AC Voltage Tests
1V AC Range Selected
23011VAC Input noise.
23021VAC Input magnitude.
23111VAC preamp output noise.
23121VAC preamp output magnitude.
2321+RMS output noise.
2322+RMS output magnitude.
100mV AC Range Selected
2331100mVAC Input noise.
2332100mVAC Input magnitude.
2341100mVAC preamp output noise.
2342100mVAC preamp output magnitude.
10V AC Range Selected
235110VAC Input noise.
235210VAC Input magnitude.
236110VAC preamp output noise.
236210VAC preamp output magnitude.
100V AC Range Selected
2371100VAC Input noise.
2372100VAC Input magnitude.
2381100VAC preamp output noise.
2382100VAC preamp output magnitude.
1kV AC Range Selected
23911kVAC Input noise.
23921kVAC Input magnitude.
24011kVAC preamp output noise.
24021kVAC preamp output magnitude.
1V AC Range Selected
24111VAC Input noise.
24121VAC Input magnitude.
24211VAC preamp output noise.
24221VAC preamp output magnitude.
2431-RMS output noise.
2432-RMS output magnitude.
24331V offset magnitude.
24341V preamp gain drift.
2435+RMS gain.
2436+RMS gain drift.
2437-RMS gain.
2438-RMS gain drift.
100mV AC Range Selected
2441100mVAC Input noise.
2442100mVAC Input magnitude.
2451100mVAC preamp output noise.
2452100mVAC preamp output magnitude.
2453100mV preamp gain drift.
10V AC Range Selected
246110VAC Input noise.
246210VAC Input magnitude.
247110VAC preamp output noise.
247210VAC preamp output magnitude.
247310V preamp gain drift.
100V AC Range Selected
2481100VAC Input noise.
2482100VAC Input magnitude.
2491100VAC preamp output noise.
2492100VAC preamp output magnitude.
2493100V preamp gain drift.
1kV AC Range Selected
25011kVAC Input noise.
25021kVAC Input magnitude.
25111kVAC preamp output noise.
25121kVAC preamp output magnitude.
25131kV preamp drift.
DC Current Tests
10mA DC Range Selected
252110mA range zero noise.
252210mA range zero magnitude.
252310mA range zero magnitude drift.
252410mA range zero offset drift.
252510mA range zero offset magnitude drift.
253110mA range gain noise.
253210mA range gain magnitude.
253310mA range gain drift.
100mA DC Range Selected
2541100mA range zero noise.
2542100mA range zero magnitude.
2543100mA range zero drift.
2551100mA range gain noise.
2552100mA range gain magnitude.
2553100mA range gain drift.
1A DC Range Selected
25611A range zero noise.
25621A range zero magnitude.
25631A range zero drift.
25711A range gain noise.
25721A range gain magnitude.
25731A range gain drift.
1mA DC Range Selected
25811mA range zero noise.
25821mA range zero magnitude.
25831mA range zero drift.
25911mA range gain noise.
25921mA range gain magnitude.
25931mA range gain drift.
100uA DC Range Selected
2601100uA range zero noise.
2602100uA range zero magnitude.
2603100uA range zero drift.
2611100uA range gain noise.
2612100uA range gain magnitude.
2613100uA range gain drift.
AC Current Tests
10mA AC Range Selected
262110mA range gain noise (10mA Input).
262210mA range gain magnitude (10mA Input).
2631100mA range gain noise (100mA Input).
2632100mA range gain magnitude (100mA Input).
Resistor Ratio Tests
1k Standard Resistor Tests
True Zero
27211k resistor true zero noise.
27221k resistor true zero magnitude.
27231k resistor true zero drift.
Normal measurement
27241k resistor gain noise.
27251k Ohm resistor gain magnitude.
27261k Ohm resistor gain drift.
100k Ohm Standard Resistor Tests
True Zero
2731100k Ohm resistor true zero noise.
2732100k Ohm resistor true zero magnitude.
2733100k Ohm resistor true zero drift.
Normal measurement
2734100k Ohm resistor gain noise.
2735100k Ohm resistor gain magnitude.
2736100k Ohm resistor gain drift.
Standard Resistors Ratio
Ratio Drift Calculation
2737Standard resistor ratio drift.
Normal and LOI Ohms Ranges Tests
100k Ohm Range Selected
2811100k Ohm range low-current true zero noise.
2812100k Ohm range low-current zero magnitude.
2813100k Ohm range low-current zero drift.
2821100k Ohm range low-current gain noise.
2822100k Ohm range low-current gain magnitude.
2823100k Ohm range low-current gain drift.
1M Ohm Range Selected
28311M Ohm range high-current true zero noise.
28321M Ohm range high-current zero magnitude.
28331M Ohm range high-current zero drift.
28411M Ohm range high-current gain offset noise.
28421M Ohm range high-current offset magnitude.
28431M Ohm range high-current gain noise.
28441M Ohm range high-current gain magnitude.
28451M Ohm range high-current gain drift.
28511M Ohm range low-current true zero noise.
28521M Ohm range low-current zero magnitude.
28531M Ohm range low-current zero drift.
28611M Ohm range low-current gain noise.
28621M Ohm range low-current gain magnitude.
28631M Ohm range low-current gain drift.
100 Ohm Range Selected
2741100 Ohm range high-current true zero noise.
2742100 Ohm range high-current zero magnitude.
2743100 Ohm range high-current zero drift.
2751100 Ohm range high-current gain offset noise.
2752100 Ohm range high-current offset magnitude.
2753100 Ohm range high-current gain noise.
2754100 Ohm range high-current gain magnitude.
2755100 range high-current gain drift.
2761100 Ohm range low-current true zero noise.
2762100 Ohm range low-current zero magnitude.
2763100 Ohm range low-current zero drift.
1k Ohm Range Selected
27711k range high-current true zero noise.
27721k range high-current zero magnitude.
27731k range high-current zero drift.
27811k range high-current gain noise.
27821k range high-current gain magnitude.
27831k range high-current gain drift.
10k Range Selected
279110k range high-current true zero noise.
279210k range high-current zero magnitude.
279310k range high-current zero drift.
280110k range low-current true zero noise.
280210k range low-current zero magnitude.
280310k range low-current zero drift.
Hi Ohms Ranges Tests
10M Range Selected
287110M range high-current true zero noise.
287210M range high-current zero magnitude.
287310M range high-current zero drift.
288110M range low-current true zero noise.
288210M range low-current zero magnitude.
288310M range low-current zero drift.
289110M range low-current gain noise.
289210M range low-current gain magnitude.
289310M range low-current gain drift.
100M Range Selected
2901100M range true zero noise.
2902100M range zero magnitude.
2903100M range zero drift.
1G Range Selected
29111G range true zero noise.
29121G range zero magnitude.
29131G range zero drift.

Wavetek/Datron 1281 8½ Digit Digital Multimeter

The 1281 from Wavetek/Datron is a high performance, 8½ digit bench top multimeter. It can measure direct voltage and current, alternating voltage and current, and resistance. A rear input option is available for ratiometric measurements on voltage and resistance functions.

Common Failures

  • Misapplication of voltage or current — The 1281 can be damaged by sourcing high voltage into resistance or current functions.
  • Age — Very old instruments can suffer from age related failures caused by normal deterioration of components and assemblies over time.

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 1281 and let it warm up for 30 minutes. Run the fast 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.
  • If the fast test passes, next run the full 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 test operations, contact us for repair.
Call us at: 254-687-9700
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