Fluke 8808A User Manual - Page 23

Frequency, Continuity, Diode Test, Accuracy

Page 23 highlights

1 Introduction and Specifications Electrical Specifications Frequency Gate Time 131 ms Measurement Method AC-coupled input using the ac voltage measurement function. Settling Considerations When measuring frequency after a dc offset voltage change, errors may occur. For the most accurate measurement, wait up to 1 second to allow input blocking RC time constant to settle. Measurement Considerations To minimize measurement errors, shield inputs from external noise when measuring low voltage, low frequency signals. Range Frequency 20 Hz - 2 kHz 100 mV to 2 kHz - 20 kHz 750 V[1,2] 20 kHz - 200 kHz 200 kHz - 1 MHz Notes: [1] Input > 100 mV [2] Limited to 8* 107 V Hz Accuracy Accuracy 90 days 23 °C ± 5 °C 0.01 + 0.002 0.01 + 0.002 0.01 + 0.002 0.01 + 0.004 1 year 23 °C ± 5 °C 0.01 + 0.003 0.01 + 0.003 0.01 + 0.003 0.01 + 0.006 Temperature Coefficient/°C Outside 18 - 28 °C 0.002 + 0.001 0.002 + 0.001 0.002 + 0.001 0.002 + 0.002 Continuity Continuity Threshold 20 Ω Test Currents 1 mA Response Time 100 samples/sec with audible tone Rate Fast Maxiumum Reading 199.99 Ω Resolution 0.01 Ω Diode Test Response Time 100 samples/sec with audible tone Rate Fast Maxiumum Reading 1.9999 V Resolution 0.1 mV 1-13

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Introduction and Specifications
Electrical Specifications
1
1-13
Frequency
Gate Time
..........................................................
131 ms
Measurement Method
.......................................
AC-coupled input using the ac voltage measurement function.
Settling Considerations
...................................
When measuring frequency after a dc offset voltage change, errors
may occur. For the most accurate measurement, wait up to 1 second
to allow input blocking RC time constant to settle.
Measurement Considerations
.........................
To minimize measurement errors, shield inputs from external noise
when measuring low voltage, low frequency signals.
Accuracy
Accuracy
90 days
1 year
Range
Frequency
23 °C ± 5 °C
23 °C ± 5 °C
Temperature
Coefficient/°C
Outside 18 – 28 °C
20 Hz – 2 kHz
0.01 + 0.002
0.01 + 0.003
0.002 + 0.001
2 kHz – 20 kHz
0.01 + 0.002
0.01 + 0.003
0.002 + 0.001
20 kHz – 200 kHz
0.01 + 0.002
0.01 + 0.003
0.002 + 0.001
100 mV to
750 V
[1,2]
200 kHz – 1 MHz
0.01 + 0.004
0.01 + 0.006
0.002 + 0.002
Notes:
[1]
Input > 100 mV
[2]
Limited to 8* 10
7
V Hz
Continuity
Continuity Threshold
........................................
20
Test Currents
....................................................
1 mA
Response Time
................................................
100 samples/sec with audible tone
Rate
…….…………………………………………… Fast
Maxiumum Reading
………………………………199.99
Resolution
……….….. ……………….……………0.01
Diode Test
Response Time
.................................................
100 samples/sec with audible tone
Rate
………………………………………………….Fast
Maxiumum Reading
………………………..….…1.9999 V
Resolution
….………..….. ………………………..0.1 mV