Fluke 91 Series II User Manual page 176

10 - 6
METER MODE
Displays up to four readings and a full screen scope
waveform of INPUT A.
DC Voltage
Ranges
direct input ..................100 mV, 300 mV, 1V, 3V, 10V, 30V,
with 10:1 probe .......... 1V, 3V, 10V, 30V, 100V, 300V, 1 kV,
Accuracy ...................................................... ±(0.5% +5 counts)
Full Scale Reading ............................. 1000 or 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
direct input .................100 mV, 300 mV, 1V, 3V, 10V, 30V,
with 10:1 probe .......... 1V, 3V, 10V, 30V, 100V, 300V, 1 kV,
Accuracy .................... 50 Hz to 60 Hz
(valid from 1 Hz [20 Hz] to 20 kHz
5% range) 1 Hz [5 Hz] to 1 MHz
1 Hz [5 Hz] to 5 MHz ±(10% +25 counts)
• [values] for "Vrms AC (no DC)", AC coupled input.
In "AC+DC", the DC component is included in the
•
measurement result and does not influence the accuracy.
100V, 300V
3 kV (limit 600V)
or 400 Hz
100V, 250V
2.5 kV (limit 600V)
±(1% +10 counts)
±(2% +15 counts)
±(3% +20 counts)
91/92/96/99/105
Full Scale Reading ............................. 1000 or 3000 counts
Crest Factor ..... Automatic ranging on crest factor overload
Common Mode Rejection Ratio.......... >60 dB, DC to 60 Hz
Additional Meter Mode Measurements
FREQUENCY .............................................. 1 Hz to 5 MHz
Resolution.................................................................4 digits
Accuracy ......................................................±(0.5% +2 counts)
RPM ..................... selectable: 1 pulse/rev. or 1 pulse/2 rev.
Range .......... 60RPM (120 @ 1 pulse/2 rev.) to 99.99kRPM
Resolution......................1 RPM (10RPM for RPM >10,000)
Accuracy .......................................................±(1% +10 counts)
DUTY CYCLE .............................positive or negative pulse
Range ...........................................................2.0% to 98.0%
Resolution.................................................................... 0.1%
Accuracy (logic or pulse waveforms) .......±(0.5% +2 counts)
PULSE WIDTH ..........................positive or negative pulse.
Range ........................................................ 250 µs to 50 ms
Resolution.................................................................3 digits
Accuracy ......................................................±(0.5% +2 counts)
dBV .............................................................1 volt reference
dBm ........................ reference @ 50, 60, 75, 93, 110, 125,
135, 150, 250, 300, 500, 600, 800,
dBW or WATTS .................. 1, 2, 4, 8, 16 or 50Ω reference
Users Manual
900, 1000 or 1200Ω