A datron quick test of the inguard supplies on the DC board showed the following values: Test point Specification Measured voltage Ripple Condition TP901 15V.0 VDC.6 user VPK-PK OK TP902 -15V -14.8 VDC.04 VPK-PK OK TP903 35V.4 VDC.09 VPK-PK OK TP904 -35V.
The power was left on and a battery powered soldering iron was used.
In no event shall the author, m user site, or any manual other 3rd party, including Fluke be liable for any special, direct, indirect, or consequential damages or any damages whatsoever resulting datron from loss of use, data or profits, whether in an action of contract, negligence.Side note: For those out there that would like to understand this bug better, the 1271 multimeter runs hundreds of internal tests, and this meter passes all, except 2433.Unusual amount of transformers and inductors differentiate manual Datrons approach in multimeter design.Rear panel is same as first manual unit, with all the usual connectors and without any fans or vent holes.Function Ranges Accuracy DC Voltage 0 to 1000V Best 1 Year manual Specification:.1 ppm AC Voltage 100 mV to 1000V @ 40 Hz to 1 MHz Best 1 Year Specification: 60 ppm DC Current 0 to 2A Best 1 Year Specification: 25 ppm AC Current.Tested them using different bit patterns, without any problems.
In comparison, the new parts were all within 10 and tomtom the ESR was.1.
The power instruments input filter was update also replaced as a precaution.
These were purchased as used.Initial inspection and basic disassembly Sample photos: Image 1: DMM front face Image 2: DMM rear elizabeth face Display: Its a custom tomtom DC405E2 from itron/Japan.Option 20 2-Wire 4-Wire Resistance Converter After removal of Option 20 pcba remnants update of spider with its home was detected.The paper board was reinstalled and the fast self-test was performed.After reconnection cable, this 9005 error code went away and first DCV readings were acquired.
Similar idea technology was also used in Flukes 7000 DC reference standard and recent Keithleys 7-digit DMM7510.
Datron 12re the using unusual arrangmenet for main voltage reference.