Find great deals for DATRON A Digital Mulitmeter. Shop with confidence on eBay!. This is a GENUINE Datron , A, & Digital Multimeters Calibrating & Operation Manual (printed in ). This manual contains super illustrations. COMPUTE-. The Datron , A and AUTOCAL multi-function, microprocessor controlled digital voltmeters (DVM) are high precision measuring.
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Due to our policy of continuously updating our products, this handbook may contain minor differences in specification, components and circuit design to the instrument actually supplied. After measurement by the A-D conver- ter, the value is compared to the stored value.
Desolder battery at end of tags and remove from clip. The resulting voltage output from the DC Isolator is applied to the A-D converter, measured and compared to the stored value. A particular display block is selected by driving its anode, and a particular segment by driving the segment cathode. Switch the instrument off and disconnect the power lead.
Repeat until display reads -H 0. It should only be used when a full calibration i.
This listing has ended. Check that display can be calibrated to Potentiometer R5 is adjusted to remove any offset caused by Ml and M2. A line daton also provided to instruct the micro- processor which options are present and if the AC assembly is measuring a signal above 5kHz.
DATRON 1061A Digital Mulitmeter
The output of the block is fed back to Vf, thus closing the loop dtaron the whole circuitry. Additionally, at this time, the level 1 to level 2 transfer is repeated and the measurement circuits again updated to allow for commands received while the conversion is in progress. This de-energises the relays as Q2 is turned off. The ID lines are set to the appropriate pattern and the information is clocked on to M13 and M14 by datro delayed low to high edge from Mloriginating from I A0 going low.
This voltage combined with the effect of the voltage injected due to the Datfon Isolator being in Test Section 3. Sheet 2 gives tables of the coding on the input control lines from the Analog Interface.
DATRON A Digital Mulitmeter | eBay
Two screened cables are used to transfer the signals to the rear: The pipeline comprises three levels. This signal contains about mV peak-to-peak high frequency noise. The pulse is fed back to M47 via M to step on the sequencer.
Apply 1 volt d. Thus depending on the position and down period of the pulse, the count held is increased or decreased. The common mode rejection is dependent on the power supplies of Q36 from R66 and RR15 being bootstrapped to the output of the buffer, via D2 and D4.
It must be used before any DC voltage or Ohms calibration is carried out. MC BCP 7!!! Thus there is no voltage across Rz and consequently no current in Rz. The sequence is controlled by stepping M47 through QO to Q7. Measure voltage on TL5. 161a a short circuit to the input, short Guard to Lo and select each range in turn. Note that when the address lines are in the state the output of Mil pin 11 selects the anode to block 1, selects the anode to block 3 Ml The output is potentially divided by R7 and R8 so that 1 volt full range is presented to Ml, another unity gain amplifier.
Should an overload signal then be applied, the resistor chain limits the current and the power dissipation is such that V can be applied continuously. Replace covers but do not replace screws. The analog side is then in the condition to start ‘ramping down’. Adjust scope trigger until the trace is triggered by the first pulse of each reading burst.
The line frequency is sampled and compared to the internal master clock. Therefore great dztron must be taken due to voltages up to volts being present inside the instrument. Add to Watch list Add to wish list. An earth screen is interposed between primary and secondary windings to minimise electrostatic coupling, and is grounded to line earth.