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.
|Published (Last):||21 December 2007|
|PDF File Size:||1.55 Mb|
|ePub File Size:||2.22 Mb|
|Price:||Free* [*Free Regsitration Required]|
Datron 1281 DMM Meters
Daatron board features same jump-wired reworks and patches on bottom side: Rear panel is same as first unit, with all the usual connectors and without any fans or vent holes.
The outguard supplies located on this PCBA were measured once suitable test points were found: It appears that the diagnostic test for the failing step is low by 1.
It was decided to continue troubleshooting at this moment and replacing them would have been done later. During reassembly of the bottom half of the meter, it was discovered that the Current assembly had some difficulty with the three connectors at the front of the pcb. Conditions are for test are: The power supply and ribbon cables also need to be disconnected. This article will cover two different unit, with second generation Wavetek-branded logo, produced somewhen in Fuse Tests Fuse is open circuit.
It can measure direct voltage and current, alternating voltage and current, and resistance. The power supplies will need to be checked first, as usual with old equipment repairs. The lithium battery was replaced with a TLP. Any failure or operational deficiency information available allows us to provide the best service. Datrkn air was used to clean the dust and debris from eatron DC pcb.
Datron – DMM Meters
P is the pathway for test To avoid issues with battery, simple FRAM adapter board was designed and manufactured. Possibly one of the daughterboards was failing?
All tests completed now without darron. It is also separated between the full or fast self-test. The meter came up with no checksum errors.
DATRON 1281 8.5 DIGIT Selfcal Digital Multimeter
Secondary outputs of this low voltage transformer are rectified and regulated with usual LDO s to provide clean analog supply voltages. The Current assy was installed in the previous and a fast self-test was performed without errors. Mains filter have soldered earth, just like in case with HP A The power supplies were remeasured. Most likely the calibration constants are too far off.
The and test both use the Ohms 10mA current source. The remaining capacitors had no additional gotchas. Service manual decode message for states: Might be worthy to take a note of cable locations before removing PCBA:.
Heatshrink was added to the P and N wires. After reconnection cable, this error code went away and first DCV readings were acquired.
Another kind of board is shown below: It tests the mean value with the inputs dateon on the mV range.
A couple of gotchas were found during the change out. Datron Calibration and service manual with schematics, Volume 2, Issue 2, January If you do have any questions, jump in comments! Two of the capacitors actually would touch each other and this is solved with the offset leads. Gain resistors were already measured and with shorted relay contacts to make sure they datrin working.
If you willing to contribute or add your experience regarding test instruments repairs or provide extra information, you can do so following these simple instructions.
For any functional or calibration errors not detected by the test operations, contact us for repair. Looking at the wires an interesting issue was found. Another gotcha is that it is important to note which lead is offset as there are some components that will prevent it from going in properly. No issues were noted with the AC assy.
The board was reinstalled and the fast self-test was performed. There was concern that additional heat could have caused issues with the aging parts.