Fluke 45 User Manual page 106

Dual display multimeter
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45
Users Manual
DC Voltage
Range
300 mV
3 V
30 V
300 V
1000 V
100 mV
1000 mV
10 V
100 V
1000 V
Input Impedance
10 Me in parallel with <100 pF
In the dual display mode, when the volts ac and volts dc functions are
selected, the 10 M dc input divider is in parallel with the 1 M ac
divider.
Normal Mode Rejection Ratio
>80 dB at 50 Hz or 60 Hz, slow and medium rates
>54 dB for frequencies between 50-440 Hz, slow and medium rates
>60 dB at 50 Hz, fast rate (Note: Fast rate has no filtering)
Maximum Allowable AC Voltage While Measuring DC Voltage or (AC + DC)
Voltages
Range
300 mV
3 V
30 V
300 V
1000 V
* NMRR is the Normal Mode Rejection Ratio
† Normal Mode Rejection Ratio at 50 Hz or 60 Hz 0.1 %
Common Mode Rejection Ratio
>90 dB at do, 50 or 60 Hz, (1 ke unbalanced, medium and slow rates)
Resolution
Slow
Medium
10 µV
100
µ
V
mV
1
10
mV
100 mV
1 µV
10 µV
100
µ
V
1 mV
10 mV
Max Allowable Peak AC
100 mV
1000 mV
10 V
100 V
1000 V
Fast
100 µV
1
mV
10 mV
100 mV
1 V
Note
Voltage
NMRR* >80 dB†
15 V
15 V
1000 V
1000 V
1000 V
Accuracy
(6 Months)
(1 Year)
002 % + 2
0.025 % + 2
0.02 % + 2
0.025 % + 2
0.02 % + 2
0.025 % + 2
0.02 % + 2
0.025 % + 2
0.02 % + 2
0.025 % + 2
0.02 % + 6
0.025 % + 6
0.02 % + 6
0.025 % + 6
0.02 % + 6
0.025 % + 6
0.02 % + 6
0.025 % + 6
0.02 % + 6
0.025 % + 6
Peak Normal Mode Signal
NMRR >60 dB†
15 V
15 V
15 V
15 V
50 V
300 V
50 V
300 V
200 V
1000 V

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