Find great deals for Datron DIGIT Selfcal Digital Multimeter – Faulty. Shop with confidence on eBay!. Wavetek/Datron Multi-Product Calibrator .. The from Wavetek/Datron is a high performance, 8½ digit bench top multimeter. It can measure direct voltage. Datron repair. «on: January 26, , am». Hey. «Last Edit: February 02, , am by whatamidoing». Logged.
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Tested them using different bit patterns, without any problems.
The power supplies will need to be checked first, as usual with old equipment repairs. The digital board is removed by taking out screws from the rear cover.
If the fast test passes, next run the full test from the test button menu. Datron and are the using unusual arrangmenet for main voltage reference. P is the pathway for test It was now measuring Power up the and let it warm up for 30 minutes. It was chosen to repair last repair due to the number of errors.
It does not look good, but Datron engineers knew what they are doing. The schematics for both the inguard and outguard supplies were scanned.
Wavetek/Datron 1281 8½ Digit Digital Multimeter
Many bodge wires, reworks, hanging components from bottom PCB side, cut traces show amazing lot of debug and service on these instruments even after they went on market. Some cobwebs were also found around the power supply area.
Looking at the wires an interesting issue was found. It is measuring value through DC range, so it is a good possibility that offset on DCV measurement causing self-test for fail.
Re-seating all chips would be a good idea, considering age of the instrument and unknown history. The errors are broken down based on the type of test.
Unit was received as advertised. Meter was failing with error message — C03 immediately after power on. No issues with front panel or display. Without further diagnosing of the error, the inguard and outguard supplies needed to be tested as the parts have datecodes from and the lithium backup battery is dated from Decision to make this article public was done to aid other owners of these precision multimeters from Datron.
All seven capacitors were changed with only one gotcha. The serial number was still correct as was the line frequency, as expected.
Not good, as this shows someone was diagnosing an issue that required the board to be possibly removed from the frame. That likely caused some excessive currents flow thru webs and poor bug, causing measurement issues. Neither boards have any REV markings on the top, but might be located on the bottom side.
Low Thermal | Repair | Wavetek/Datron
Both meters show zero errors after tests. If you willing to contribute xatron add your experience regarding test instruments repairs or provide extra information, you can do so following these simple instructions. Testing should only be performed by qualified technicians. Datron also have self-cal technology, with is targeted to compete with Autocal feature of HP A.
No repair required here. This series error usually means bad communication with one of option boards.
| Datron DMM repair and calibration worklog
The board was reinstalled and the fast self-test was performed. After the first repair, datroh was determined to wait and see if the meter would still pass diagnostics based on the chances of damaging another part. Other repairs The lithium battery was not replaced. The board was removed and inspected closer under magnification.