Fluke 45 - Page 20

45
Service Manual
1-8
Maximum Functional Input
1000 V dc or peak ac on any range
True Rms AC Voltage, AC-Coupled
Range
Resolution
Slow Medium Fast
300 mV - 10 µV 100 µV
3 V - 100 µV 1 mV
30 V - 1 mV 10 mV
300 V - 10 mV 100 mV
750 V - 100 mV 1 V
100 mV 1 µV - -
1000 mV 10 µV - -
10 V 100 µV - -
100 V 1 mV - -
750 V 10 mV - -
Accuracy
Frequency Linear Accuracy dB Accuracy Power*
Max Input
at Upper
Freq
Slow Medium Fast Slow/Med Fast
20-50 Hz 1% + 100 1% + 10 7% + 2 0.15 0.72 2% + 10 750 V
50 Hz -10 kHz 0.2% + 100 0.2% + 10 0.5% +
2
0.08 0.17 0.4% + 10 750 V
10 - 20 kHz 0.5% + 100 0.5% + 10 0.5% +
2
0.11 0.17 1% + 10 750 V
20 - 50 kHz 2% + 200 2% + 20 2% + 3 0.29 0.34 4% + 20 400 V
50 - 100 kHz 5% + 500 5% + 50 5% + 6 0.70 0.78 10% + 50 200 V
* Error in power mode will not exceed twice the linear accuracy specification
Accuracy specifications apply within the following limits, based on reading rate:
Slow Reading Rate: Between 15,000 and 99,999 counts (full range)
Medium Reading Rate: Between 1,500 and 30,000 counts (full range)
Fast Reading Rate: Between 150 and 3,000 counts (full range)
Decibel Resolution
Resolution
Slow & Medium Fast
0.01 dB 0.1 dB