5492GPIB B&K Precision, 5492GPIB Datasheet - Page 46

• Manufacturer Part Number: 5492GPIB
• Description: DMM BENCH 5 1/2DGT WITH GPIB CRD
• Manufacturer: B&K Precision
• Type: Digital (DMM)r

Specifications of 5492GPIB

• Includes: Test Leads
• Style: Bench
• Display Digits: 5.5
• Display Type: VFD, Dual
• Display Count: 120000
• Function: Voltage, Current, Resistance, Frequency
• Functions, Extra: Continuity, dB, Diode Test
• Features: Hold, Min/Max, RS-232 Port
• Ranging: Auto/Manual
• Response: True RMS
• Accuracy: +/- 0.012 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4-5
Measuring True RMS AC+DC
The meter can measure the true rms value of ac voltages and currents.
When
and
or
and
are pressed simultaneously, the
meter will measure the dc and ac signals alternatively then calculate and display the
ac+dc rms value by using the following formula:
2
2
(ac+dc) RMS =
dc
ac
Note: When voltage (ac+dc) measurement function is selected, the Vdc input impedance is paralleled
with an ac-coupled 1.1M ac divider.
!
Measurement example:
To take a true rms voltage ac+dc measurement on an ac signal, assuming the input
ac is 10V
1kHz sine wave ac signal and with a dc offset voltage +5 volts, the
rms
meter will read and display the results approximately as:
2
2
11.1803 volts
5
10
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