Fluke 91 Series II User Manual page 177

Appendixes
Ω MODE
(external 4-mm banana jack inputs)
Ranges ...... 30Ω, 300Ω, 3 kΩ, 30 kΩ, 300 kΩ, 3 MΩ, 30 MΩ
Accuracy (300Ω to 30 MΩ)....................... ±(0.5% +5 counts)
Accuracy (30Ω)......................................... ±(2.5% +25 counts)
Full Scale Reading........................................... 3000 counts
Measurement Current........... 500 µA, 500 µA, 70 µA, 7 µA,
Open Circuit Voltage ..................................................... <4V
Full Scale Voltage ............<250 mV to 3 MΩ, <2V to 30 MΩ
Continuity Beeper ................................ audible for readings
DIODE TEST MODE
(external 4 mm banana jack inputs)
Open Circuit Voltage............................................................≤4V
Full Scale Voltage .................................................... 2.800V
Measurement Current.............................................. 0.5 mA
Continuity Beeper ......................... audible for readings <1V
EXTERNAL mV MODE
Displays up to four readings and a full size waveform of the
4 mm banana jack input.
DC Voltage
Ranges ..............................................................300 mV, 3V
Accuracy...................................................... ±(0.5% +5 counts)
700 nA, 70 nA, 70 nA
<5% of selected range
Full Scale Reading........................................... 3000 counts
Normal Mode Rejection ...................>50 dB at 50 or 60 Hz
Common Mode Rejection .............. >100 dB at DC, 50, 60,
AC or AC+DC True RMS Voltage
Ranges ............................................................. 300 mV, 3V
Accuracy .......................................... DC, 50 Hz, and 60 Hz.
(valid from >5% of range)
Full Scale Reading........................................... 3000 counts
Crest Factor .....Automatic ranging on crest factor overload
Useful Bandwidth .........................................................5kHz
Common Mode Rejection Ratio ..........>60 dB, DC to 60 Hz
Additional EXTernal mV mode measurements
Frequency, RPM, Duty
measurements and waveforms can also be made with
reduced accuracy.
°C / °F TEMPERATURE SCALING .................. for optional
Scaling ............................................................ 1 mV/degree
AMPERE SCALING .................. for optional current probes
Scaling ...... 1 mV/A, 10 mV/A, 100 mV/A, 1 V/A (1 mV/mA)
or 400 Hz
±(2% +15 counts)
OL at >2500 counts in 3V range
Cycle and Pulse
temperature probes
for DC, AC rms, or AC+DC rms
10 - 7
Width