Fluke ScopeMeter 190 II Series Service Manual page 29

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual
Peak
Modes ..................................................................... Max peak, Min peak, or peak-to-peak
Maximum Voltage
with 10:1 probe ................................................... 1000 V
direct (1:1) ........................................................... 300 V
Maximum Resolution
with 10:1 probe ................................................... 10 mV
direct (1:1) ........................................................... 1 mV
Full Scale Reading .................................................. 800 counts
Accuracy
Max peak or Min peak......................................... ±0.2 division
Peak-to-peak ...................................................... ±0.4 division
Frequency (Hz)
Range ..................................................................... 1.000 Hz to full bandwidth
Full Scale Reading .................................................. 999 counts
Accuracy
1 Hz to full bandwidth.......................................... ±(0.5 % +2 counts) (4 s/div to 10 ns/div and 10 periods on the screen)
Duty Cycle (DUTY)
Range ..................................................................... 4.0 % to 98.0 %
Resolution ............................................................... 0.1 % (when period >2 div)
Full Scale Reading .................................................. 999 counts (3-digit display)
Accuracy (logic or pulse) ........................................ ±(0.5 % +2 counts)
Pulse Width (PULSE)
Resolution (with
GLITCH
Full Scale Reading .................................................. 999 counts
Accuracy
1 Hz to full bandwidth.......................................... ±(0.5 % +2 counts)
Vpwm
Purpose: to measure on pulse width modulated signals, like motor drive inverter outputs
Principle: readings show the effective voltage based on the average value of samples over a whole number of periods
of the fundamental frequency
Accuracy: as V
rms
V/Hz
Purpose: to show the measured Vpwm value (see Vpwm) divided by the fundamental frequency on Variable AC Motor
Speed drives.
Accuracy: % Vrms + % Hz
AC motors are designed for use with a rotating magnetic field
of constant strength. This strength depends on the applied
voltage (Vpwm) divided by the fundamental frequency of the
applied voltage (Hz). The nominal Volt and Hz values are
shown on the motor type plate.
2-8
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off) .................................... 1/100 division
for sinewave signals
Note