User's Manual

Specifications
Automatic Scope Measurements 2
2-7
Accuracy, Fluke 190-xx4
DC coupled:
DC to 60 Hz ..................................................... ±(3 % +10 counts)
AC coupled, low frequencies:
50 Hz direct (1:1) ............................................. ±(3 % + 10 counts) −0.6 %
60 Hz direct (1:1) ............................................. ±(3 % + 10 counts) −0.4 %
With the 10:1 probe the low frequency roll-off point will be lowered to 2 Hz, which improves the AC accuracy for low
frequencies. When possible use DC coupling for maximum accuracy.
AC or DC coupled, high frequencies:
60 Hz to 20 kHz ............................................... ±(4 % + 15 counts)
20 kHz to 1 MHz .............................................. ±(6 % + 20 counts)
1 MHz to 25 MHz............................................. ±(10 % + 20 counts)
For higher frequencies the instrument’s frequency roll-off starts affecting accuracy.
Normal Mode DC Rejection ..................................... >50 dB
All accuracies are valid if:
• The waveform amplitude is larger than one division
• At least 1.5 waveform period is on the screen
AC+DC Voltage (True RMS)
Maximum Voltage
with 10:1 probe .................................................... 1000 V
direct (1:1) ........................................................... 300 V
Maximum Resolution
with 10:1 probe .................................................... 1 mV
direct (1:1) ........................................................... 100 μV
Full Scale Reading ................................................... 1100 counts
Accuracy, Fluke 190-xx2
DC to 60 Hz ......................................................... ±(1.5 % + 10 counts)
60 Hz to 20 kHz ................................................... ±(2.5 % + 15 counts)
20 kHz to 1 MHz .................................................. ±(5 % + 20 counts)
1 MHz to 25 MHz ................................................. ±(10 % + 20 counts)
For higher frequencies the instrument’s frequency roll-off starts affecting accuracy.
Accuracy, Fluke 190-xx4
DC to 60 Hz ......................................................... ±(3 % + 10 counts)
60 Hz to 20 kHz ................................................... ±(4 % + 15 counts)
20 kHz to 1 MHz .................................................. ±(6 % + 20 counts)
1 MHz to 25 MHz ................................................. ±(10 % + 20 counts)
For higher frequencies the instrument’s frequency roll-off starts affecting accuracy.
Amperes (AMP)
With Optional Current Probe or Current Shunt
Ranges .................................................................... same as VDC, VAC, VAC+DC
Probe Sensitivity ...................................................... 100 μV/A, 1 mV/A, 10 mV/A, 100 mV/A, 400 mV/A, 1 V/A, 10 V/A, and
100 V/A
Accuracy .................................................................. same as VDC, VAC, VAC+DC (add current probe or current shunt
accuracy)