Fluke 45 User Manual

45
Users Manual
DC Voltage
Resolution AccuracyRange
Slow Medium Fast (6 Months) (1 Year)
300 mV
3 V
30 V
300 V
1000 V
—
—
—
—
—
10 µV
100 µV
1
mV
10 mV
100 mV
100 µV
1 mV
10 mV
100 mV
1 V
002 % + 2
0.02 % + 2
0.02 % + 2
0.02 % + 2
0.02 % + 2
0.025 % + 2
0.025 % + 2
0.025 % + 2
0.025 % + 2
0.025 % + 2
100 mV
1000 mV
10 V
100 V
1000 V
1 µV
10 µV
100 µV
1 mV
10 mV
—
—
—
—
—
—
—
—
—
—
0.02 % + 6
0.02 % + 6
0.02 % + 6
0.02 % + 6
0.02 % + 6
0.025 % + 6
0.025 % + 6
0.025 % + 6
0.025 % + 6
0.025 % + 6
Input Impedance
10 Me in parallel with <100 pF
Note
In the dual display mode, when the volts ac and volts dc functions are
selected, the 10 M
Ω dc input divider is in parallel with the 1 M Ω 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
Peak Normal Mode SignalRange Max Allowable Peak AC
Voltage
NMRR* >80 dB† NMRR >60 dB†
300 mV
3 V
30 V
300 V
1000 V
100 mV
1000 mV
10 V
100 V
1000 V
15 V
15 V
1000 V
1000 V
1000 V
15 V
15 V
50 V
50 V
200 V
15 V
15 V
300 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)

Fluke 45 Specifications

General

Diode Test	Yes
Display Digits	5 digits
Interface	RS-232
Frequency Range	5Hz to 500kHz
Continuity	< 25 Ω
Basic DC Accuracy	0.05%
Power Supply	115/230 V AC, 50/60 Hz