Fluke 744 Fluke 744 Users Manual - Page 116
AC Voltage Measurement, of Reading + Number of Counts
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744 Users Manual AC Voltage Measurement Frequency Range % of Reading + Number of Counts 1 Year 2 Year 20 Hz to 40 Hz 2% + 10 2% + 10 40 Hz to 500 Hz 500 Hz to 1 kHz 0.5% + 5 2% + 10 0.5% + 5 2% + 10 1 kHz to 5 kHz 10% + 20 10% + 20 Ranges : 1.1000 V, 11.000 V, 110.00 V, 300.0 V rms Resolution: 11.000 counts in all ranges except 300 V; 3,000 counts on 300 V range. Input Impedance: 5 M Ω and
744
Users Manual
106
AC Voltage Measurement
Frequency Range
% of Reading + Number of Counts
1 Year
2 Year
20 Hz to 40 Hz
2% + 10
2% + 10
40 Hz to 500 Hz
0.5% + 5
0.5% + 5
500 Hz to 1 kHz
2% + 10
2% + 10
1 kHz to 5 kHz
10% + 20
10% + 20
Ranges
: 1.1000 V, 11.000 V, 110.00 V, 300.0 V rms
Resolution
: 11.000 counts in all ranges except 300 V; 3,000 counts on 300 V range.
Input Impedance:
5 M
Ω
and <100 pF
Temperature Coefficient:
10% of specification/
°
C in the ranges -10 to 18
°
C and 28 to 50
°
C
Input Coupling
: ac
Maximum Input Voltage
: 300 V rms
Minimum Input Voltage
: 0.5 V above 1 kHz
Specifications apply for 10% to 100% of voltage range.