Wavetek/Datron 4808, 4805, and 4800 Multi-Product Calibrators
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 1 (Spec%) - Tolerance> 100%
(Spec lim) - Limit is off-scale
Error 2 (Cal) - Output not ON
Error 3 (Cal) - Incorrect range or function for mode
Error 4 (Spec %) - Correction exceeds store capacity
Error 5 (OffseVError) - Requested Output off scale
Error 6 (Ohms Cal) - Entered value exceeds calibration limit
Error 7(General) - Selection exceeds voltage/ frequency limit
Error 8 (General) - Invalid key selection
Error 9 (General) - Option not fitted
Error EF (AC) - External frequency not present
Error OL (Voltage) - Output is current-limited
(Current) - Compliance limit exceeded
Fail 1 - Excessive internal temperature
Fail 2- Over voltage
Fail 3 - Control data corrupted
Fail 4 - Precision divider fault
Fail 5 - Safety circuits tripped
Fail 6 - Calibration store fault
Fail 7- 400V power supply fault
Fail 8 - 38V power supply fault
Fail 9 - 15V in guard power supply fault
LATEST - Latest calibration store selected
SHADO - Shadow calibration store selected
SAFETY - Forced safety trip in Test Mode
running - Self Test in progress
PASS - Test completed success;
B - Processor Busy

Wavetek/Datron 4808, 4805, and 4800 Multi-Product Calibrators

The 4808 series from Wavetek/Datron are bench top, multifunction calibrators for calibrating up to 7½ digit instruments. They can source direct voltage and current, alternating voltage and current, and resistance. Options include a transconductance amplifier that extends the direct and alternating current functions to 10A and a wideband voltage option with coverage to 50Mhz.

Common Failures

  • Misapplication of voltage or current — The 4808 series can be damaged by applying excessive voltage/current into the resistance functions.
  • Poor Maintenance — Over time or in dusty working environments dust and debris can build up on the filter and inside the unit. This can increase internal operating temperatures affecting reliability. In the worst cases stray leakage caused by dust in the 4808 series can cause uncontrolled high voltage conduction within the instrument resulting in significant damage.
  • Age — Very old instruments can suffer from age related failures caused by normal deterioration of components and assemblies over time.
  • Mechanical damage — The 4808 series contain several large transformers and are very heavy. Dropping or other impact damage from transport is not uncommon. Shipping damage to the front panel is also very common.

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 4808 series calibrator and run instrument self test by hitting the test button, then the reset button. If a failure occurs, note the error number/description and contact us. There can be multiple errors. Report as many as you reasonably can.
  • For any functional or calibration errors not detected by the self test, contact us for repair.