FLUKE 5200A MANUAL PDF

Fluke a AC Voltage Calibrator Teardown and Repair – Page 1. In summary, the manual puts it best: “DEATH ON CONTACT may result if. FLUKE SA. MAR 3 0 .. temperature using an rms responding meter, ( Fluke B . control is obtained via the A (Manual or Remote Mode). A AC Calibrator for a combined output ranging . The Static Sensitive (S.S.) devices are identified in the Fluke technical manual parts list with the symbol.

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The following procedure is recommended for use, and if followed closely, will yield measurements that are sub- stantially correct.

Set the A output to lmV on the 10 5200z range. The range of frequencies is controlled by the frequency range select capacitors located on the oscillator control assembly whose values are switched in accordance with the desired frequency range.

Set the test oscillator 5200q to 1 volt rms. The Oscillator is the double-integrator type. When the AC Sense signal and the variable Reference signal are in the proper balance, that is, when all of the current supplied to the summing junction by the positive Variable Reference voltage is drawn by the outputs of the two amplifier, the summing junction poten- tial will be at virtual circuit-common potential, the pul- sating dc voltage will be centered around zero volts and no error voltage will be developed at the converter output manuwl 55 of P Used when pcb are on the ex- tender board.

Carefully lift the motherboard away from the main- frame. The 5 A millivolt accuracy depends primarily on the linearity of the control loop and the ratio accuracy of the attenuator transformers. When a step is completed, if there is no requirement for a decision, follow through and perform the next step in sequence.

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Before connecting the equipment to primary power, check and, if necessary, set the input power selection switch- es as follows: Operating power for the output stage is provided by two voltage regulators supplied with raw voltage from assembly A5. On the tluke range, the Sense signal is attenuated by the primary of the applicable transformer.

Fluke A Calibrator Service and User Manual

The procedure flluke verify the 20 kHz to kHz area is described below. The pro- cedure is detailed in paragraph Accuracy versus Output Connections This stage is a complementary emitter-follower bootstrap amplifier. When used with the A Precision Power Amplifier, the output signal meets specification only fluuke kHz. Guard Connections The Oscillator Control Assembly, in turn, uses the error voltage amplitude control voltage to control the amount of feedback voltage to the Oscillator.

The comparison of the quadrature amplifier maanual to the amplitude control voltage creates a secondary control loop, and is provided for by a diode switch operated indirectly by the Oscillator out- put signal.

Install the instrument compartment inner cover and secure it at one point front and rear. On the schematic diagram, all relay contacts are marked with the conditions required to close them.

The quadrature output leads the regular output in phase by 90 degrees. Logic signals F through N outputs 0 through 7 inver- ted are held low, inhibiting the drive gates for K1 and K Set the 5 A output to 10 volts on the volt range.

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Perform the following procedure prior to beginning any operation. Tune to the third harmonic and record the meter reading.

manuql Also affecting the current supplied to the summing junction, is a resistor-switching circuit lower left quadrant of the schematic connected to the junction voltage divider. Set the oscilloscope to external trigger and the input mode to chop. If required, clean the pcb assemblies by spraying them with anhydrous ethyl alcohol to loosen the dirt and then remove it with low pressure clean dry air.

The main function of the Model A is to gen- erate an ac voltage which can be precisely selected over wide ranges of frequency and amplitude. A logic high should be present. If de- sired, the frequency can be phase-locked to an external reference source connected by coaxial cable to a BNC connector on the rear panel.

Stop electronic waste – fix it yourself

The outside supply is so designated because it is the only one of the four that is outside the guard and is used to supply circuits that are also outside. The other three manuual supply assemblies mate with connectors on A5. Perform the transfer measurements.

The purpose of the low-drift dc amplifier is to compensate for any dc offset voltages developed within the Power Amplifier, which re- sult in an error at the output. Check that the 55200a indicator automatically returns to internal sensing when any millivolt range is selected.