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MULTIMETER (digital)


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Manufacturer: Hewlett-Packard
Model: 3476 A
Cost: $420 (1982)


Description


Versatile meter capable of five different functions, i.e. AC and DC currents, AC and DC voltages, and resistance. Measured values are displayed on a digital readout. The Hewlett-Packard meter is auto-ranging, i.e. the meter automatically switches to the most appropriate range.



Specifications
DC Voltage
Ranges ±0.11 V to 1100 V in 5 ranges (1000 V max.)
Accuracy 0.11 V ±(0.5% of reading + 0.2% of range)
1.1 V, 11 V ±(0.5% of reading + 0.1% of range)
110 V, 1100 V ± (0.6% of reading + 0.1% of range)
Input Resistance10 Mohms ±5%
DC Current
Ranges ±0.11 A, 1.1 A
Accuracy ±(1.0% of reading + 0.2% of range)
Impedance1 - 1.5 Ohms constant
AC Voltage
Ranges 0.11 Vrms to 1100 Vrms in 5 ranges (707 Vrms max)
Accuracy
1.1 V to 1100 Vrms ± (1.7% of reading + 0.5% of range), 45 Hz to 2 kHz
0.11 Vrms ±(1.7% of reading + 0.7% of range), 45 Hz to 2 kHz
1.1 V to 1100 Vrms ± (3.2% of reading + 0.7% of range), 2 kHz to 5 kHz
0.11 Vrms ± (5.2% of reading + 0.7% of range), 2 kHz to 5 kHz
1.1 V to 1100 Vrms ± (8.2% of reading + 1.1% of ranges), 5 kHz to 10 kHz
0.11 Vrms ± (18.2% of reading + 1.1% of range), 5 kHz to 10 kHz
Input Resistance10 M Ohms ± 5%
Input Capacitance< 30 pF
AC Current
Ranges0.11 A rms, 1.1 A rms.
Accuracy
1.1 A rms±(2.2% of reading + 0.5% of range), 45 Hz to 2 kHz
±(3.7% of reading + 0.7% of range) 2 kHz to 5 kHz
0.11 A rms ±(2.2% of reading + 0.7% of range) 45 Hz to 2 kHz
±(5.7% of reading + 0.7% of range) 2 kHz to 4 kHz
Impedance1 - 1.5 Ohms constant
Resistance
Ranges1.1 kohm to 11000 kohm in 5 ranges
Accuracy
110 k, 1100 kohm ± (0.5% of reading + 0.1% of range)
11000 k, 1.1 k, 11 kohm ± (0.7% of reading + 0.1% of range)



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Operating Instructions
  1. Turn on meter with meter disconnected from circuit.
  2. Check zero of meter as follows: connect lead across V-Ohm and COM inputs, depress V button only, i.e. meter set to measure DC voltage, readout should read 1 digit or less.
  3. Select the appropriate range and function and then connect the meter into the circuit, ensuring the correct pair of inputs are used. If the range is not know start at highest range and work down. If display does not show all digits lit up or if display flashes a higher range should be selected.



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keywords: electrical measurement device, voltage measurement device, current measurement device, resistance measurement device, voltmeter, ammeter, dmm, ohmeter.

Document created Circa 1982. Original author: Unknown.
Last updated 06/21/96. Revised by David Harrison.