DATRON 4700 PDF

Model Specifications. Manufacturer(s). Datron. Instrument Model: Description: Autocal Multifunction Calibrator. Instrument Type(s). Calibrator. Application. Find great deals for DATRON AUTOCAL Multifunction Calibrator as Is. Shop with confidence on eBay!. Datron | Sale | Rental | Lease – Calibrator. Datron Calibrator. Contact us for pricing and availability. Description; Options.

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Search the history of over billion web pages on the Internet. Full text of ” Datron: Total Tolerance Limit Calculations 7. Uncertainty and Traceability 7,33 6.

Procedural Information 7,35 7. The sections are put together in a sequence flowing logically from one subject to another, so that understanding increases as the text is read naturally from front to rear. Here is an alternative explanato. Introduction and a brief account of the intemaJ design.

Physical connections and mounting — getting it installed. A brief scan of the available controls — where they are and what they do. The correct procedures for making the perform for you. How your can operate whthin an IEEE system — the device dependent codes datrln will need to use.

Specifications — what accuracy you can expect to get from your instrument. Verification that your 47700 the high specification it had when it left the factory. How to restore your to its original specification after it has suffered the ravages of time and temperature. We are confident that your will give you many years of accurate and reliable service, and hope tliat you will datroj this handbook to obtain maximum benefit from its many facilities.

General View of Datron Auloca Multifunction Calibrator Introduction Tlie Datron Autocal Multifunction, Calibrator is a high-precision calibrator which features exceptionally higli stability and full systems capability. The uses datdon microprocessor for control management, simplifying its use in complex manual operations, such as calibration of high-quality digital multimeters.

The IEEE interface provides a comprehensive remote programming capability, allowing program, med calibration of the itself. The specification is in Section 6.

Datron 4700

Resolution and Accuracy The maximum resolution is 6H digits with a unique 470 for displaying the specified accuracy of any output voltage. Resolution and Accuracy The maximum resolution is 6M digits with a unique facility for displaying the specified accuracy of output current. Resolution and Accuracy The maximum resolution is digits with a unique facility for displaying the specified accuracy of output current.

The specification is in Section 6 Resistance By tittmg Option 20, the instrument can be used to calibrate resistance in eight decade ranges from lOolim to iOOMohm.

Resolution and Accuracy The maximum resolution is digits with a unique facility for displaymg the specified accuracy of any output resistance.

Any five frequency values within the range of the instrument can be stored in volatile memory. Accidental or unauthorized use of the calibration routine is prevented by a key-operated daatron on the instrument rear panel. The procedure for calibrating this insuiiment is contained in Section 8.

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Remote Sense The specified output voltage may be fatron at the load, using 4-wire connections. Remote or Local Sense is selectable from the front panel. On power-up, tlie internal calibration memory is automatically checked. At any time when the output is off and not 400 remote control, a user may conduct a sequenced lest of the displays, keyboard, safety circuitry and Reset function.

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The two main groups are: Fail An internal fault condition has been detected. The available options for the are as follows; Option iO: Rear output terminals as a factory- fitted alternative to front panel terminals.

The rear output option is not recommended for best performance in calibrating high bandwidth, low level instruments.

Fatron instrument can form part of a system by means of the IEEE standard digital interface. The method of connecting to the system controller and the coimnand codes are described in Section 5. It contains detailed descriptions of the circuits, trouble-shooting and calibration procedures, part.

This shows the division and flow of functions within the Inputs The microprocessor controls tlie output in response to three main inputs: These modify the values which control the output. After processing, the computing system changes tlie output of the instrument to respond to the input instructions. Precision Electronic Divider In the out-guard eatron the selected output value, including calibration corrections, is set into a digital comparator as a bit number.

This is counted out by a crystal controlled binary counter, resulting in a 1 25 Hz square wave whose mark: When, transferred into guard, it chops tiie Master Reference voltage. A 7-poIe active low-pass filter integrates the chopped reference, to generate the ripple-free DC Working Reference Voltage.

Datroon protection is provided, and the Output lines are fused. Range selection is achieved by switching internal shunts. Output protection against over-voltage is provided, and the outputUnes are fused. This zero display value cannot be recalibrated. The connections to the resistor remain the same, but the display value includes the resistance of the connections form the Ei and Lo terminals to the resistor. The arrangement provides a calibrated 2- wire facility with external connection to the HI and Lo terminals.

When n is selected from any other function, the is forced into Remote Sense, but this may be deseiected for 2-wire operation.

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Refer to Section 8. The output value is measured and the microprocessor is activated, to add any new corrections to factors already retained in aon-voltaiie memory. The updated correction factors are applied in the normal RUN mode. Processor A series microprocessor controls the internal performance of the instrument, employing 26K bytes of program memory.

The processor also controls the display, the IEEE Interface Bus and the operation of the restart and dagron circuitry. This section contains information and instmctions for unpacking and installing the Datron Every care is taken in the choice of packing materials to ensure that your equipment will reach you in perfect condition. If the equipment has been subject to excessive mishandling in dtron the fact will probably be visible as external damage to the shipping carton.

In the event of damage, the shipping container and cushioning material should be kept for the carrier’s inspection. Unpack the equipment and check for external damage to the case, sockets, keys etc.

If damage is found, notify the carrier and your sales representative immediately. Standard accessories supplied with the instrument are as described in Section 1. The supply lead should be connected to a grounded outlet ensuring that the ground lead is connected.

The protective window allows tiie fuse rating and line voltage selection to be inspected with the power socket connected. This window slides to the left once the socket has been disconnected, for access to the fuse and voltage selector printed circuit board. Slide the window to the left to reveal the fuse and Datorn selector board. Draw the fuse-extractor to the left and remove the datro.

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Remove the PC selector board and rotate until the desired voltage is on the left of the upper surface. Reinsert the selector board datrn into the module slot. The desired voltage is visible in the cutout below the fuse. Return the fuse extractor to the normal position. Power Fuse The fuse rating is; 3. It is intended to stand flat on a bench, positioned so that the cooling-air inlet and exhaust apertures are not obsti-ucted.

It is recommended that at least 30cm 12 inches of free space is at the rear. Option 90 permits the instrument to be mounted in a standard 19 inch cabinet Remove the two rear spacers from the case sides by releasing six screws. Fit the two rack-mounting slides to the rear of the case sides and secure using six of the shorter screws in the option kit N. The slides may be reversed to give rearward extension.

Fit the two rear rack-mounting ears to the rear of the cabinet, with tongues facing forward. In shallow cabinets it may be necessary to trim the tongue. CAUTION Assistance is required to fit the into the cabinet Lift the into position in the cabinet, locate the tongues in the slides, and carefully slide backwards until the front ears butt up against tlie cabinet front Secure the front ears to the cabinet Also clear ventilation for fan cooling to operate properly. On no account should the upper and lower covers be removed.

The cannot be fitted with both front and rear output temiinals, The functions of the six terminals are identical to those normally fitted on the front panel, and Che external leads are connected in the same way.

See Section 4 for details. For detailed operating procedures refer to Section 4. Qjm F1FJ. The right- hand blocks generally deal with function and output definition, whereas the left-hand blocks are concerned with frequency, mode and terminal configurations. Front Panel Keys All user commands from front panel keys are executed through main program firmware. A Key LED lit signifies that conditions are valid for the selected operation, and not merely that the key has made contact.

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At any time, the instrument status is described by the combination of LET states, display values and display catron. Generally, if an invalid condition is selected, an error message will be displayed and a buzzer will sound, the command is ignored and tire remains in its previous state.

Control is removed from the front panel keys. If the FAIL 5 message is present, there is no automatic recovery from the tripped state whether iiiternai conditions have or have not returned to nomial. For safety reasons some of these transfers result in the output being switched off. Dayron to Section 4, Operating Routines.