Input A and input B |
DC voltage (VDC) |
Ranges |
500 mV, 5 V, 50 V, 500 V, 750 V |
Accuracy |
±(0.5% +5 counts) |
Common mode rejection (CMRR) |
>100 dB @ dc, >60 dB @ 50, 60, or 400 Hz |
Full scale reading |
5000 counts |
True-rms voltages (V ac and V ac+dc) |
Ranges |
500 mV, 5 V, 50 V, 500 V, 750 V |
Accuracy for 5% to 100% of range (DC coupled) |
DC to 60 Hz (V ac+dc) |
±(1% +10 counts) |
1 Hz to 60 Hz (V ac) |
±(1% +10 counts) |
Accuracy for 5% to 100% of range (AC or dc coupled) |
60 Hz to 20 kHz |
±(2.5% +15 counts) |
DC rejection (only VAC) |
>50 dB |
Common mode rejection (CMRR) |
>100 dB @ dc |
>60 dB @ 50, 60, or 400 Hz |
Full scale reading |
5000 counts, reading is independent of any signal crest factor. |
Peak |
Modes |
Max peak, Min peak, or pk-to-pk |
Ranges |
500 mV, 5 V, 50 V, 500 V, 2200 V |
Accuracy |
Accuracy Max peak or Min peak |
5% of full scale |
Accuracy Peak-to-Peak |
10% of full scale |
Full scale reading |
500 counts |
Frequency (Hz) |
Ranges |
123B: 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz,1 MHz, 10 MHz, and 50 MHz |
124B and 125B: 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, 1 MHz, 10 MHz, and 70 MHz |
Frequency range |
15 Hz (1 Hz) to 50 MHz in continuous autoset |
Accuracy @1 Hz to 1 MHz |
±(0.5% +2 counts) |
Full scale reading |
10,000 counts |
RPM |
Max reading |
50.00 kRPM |
Accuracy |
±(0.5% +2 counts) |
Duty cycle (PULSE) |
Range |
2% to 98% |
Frequency range |
15 Hz (1 Hz) to 30 MHz in continuous autoset |
Pulse width (PULSE) |
Frequency range |
15 Hz (1 Hz) to 30 MHz in continuous autoset |
Full scale reading |
1000 counts |
Amperes (AMP) |
With current clamp |
Ranges |
Same as V dc, V ac, V ac+dc, or PEAK |
Scale factors |
0.1 mV/A, 1 mV/A, 10 mV/A, 100 mV/A, 400 mV/A, 1 V/A, 10 mV/mA |
Accuracy |
Same as V dc, V ac, V ac+dc, or PEAK (add current clamp uncertainty) |
Temperature (TEMP) with optional temperature probe |
Range |
200 °C/div (200 °F/div) |
Scale factor |
1 mV/°C and 1 mV/°F |
Accuracy |
As V dc (add temp. probe uncertainty) |
Decibel (dB) |
0 dBV |
1 V |
0 dBm (600 Ω /50 Ω) |
1 mW referenced to 600 Ω or 50 Ω |
dB on |
V dc, V ac, or Vac+dc |
Full scale reading |
1000 counts |
Crest factor (CREST) |
Range |
1 to 10 |
Full scale reading |
90 Counts |
Phase |
Modes |
A to B, B to A |
Range |
0 to 359 degrees |
Resolution |
1 degree |
Power (125B only) |
Configurations |
1 phase / 3 phase 3 conductor balanced loads (3 phase: fundamental component only, AUTOSET mode only) |
Power factor (PF) |
Ratio between watts and VA range - 0.00 to 1.00 |
Watt |
RMS reading of multiplying corresponding samples of input A (volts) and input B (amperes) |
Full scale reading |
999 counts |
VA |
Vrms x Arms |
Full scale reading |
999 counts |
VA reactive (var) |
√((VA)2-W2) |
Full scale reading |
999 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 Vrms for sinewave signals |