Dual Input Meter - Fluke 123 User Manual

Dual Input Meter

The accuracy of all measurements is within ± (% of
reading + number of counts) from 18 °C to 28 °C.
Add 0.1x (specific accuracy) for each °C below 18 °C or
above 28 °C. For voltage measurements with 10:1 probe,
add probe uncertainty +1%. More than one waveform
period must be visible on the sceen.
Input A and Input B
DC Voltage (VDC)
Ranges.........................500 mV, 5V, 50V, 500V, 1250V
Accuracy .......................................... ±(0.5% +5 counts)
Normal Mode Rejection (SMR) .......................... >60 dB
Common Mode Rejection (CMRR)........ >100 dB @ DC
Full Scale Reading ..................................... 5000 counts
True RMS Voltages (VAC and VAC+DC)
Ranges.........................500 mV, 5V, 50V, 500V, 1250V
Accuracy for 5 to 100% of range
DC coupled:
DC to 60 Hz (VAC+DC)............... ±(1% +10 counts)
1 Hz to 60 Hz (VAC) .................... ±(1% +10 counts)
AC or DC coupled:
60 Hz to 20 kHz........................ ±(2.5% +15 counts)
20 kHz to 1 MHz.......................... ±(5% +20 counts)
1 MHz to 5 MHz......................... ±(10% +25 counts)
@ 50 or 60 Hz ±1%
>60 dB @ 50, 60, or 400 Hz
5 MHz to 12.5 MHz .................... ±(30% +25 counts)
5 MHz to 20 MHz (excl. test leads or probes) ..........
AC coupled with 1:1 (shielded) test leads
60 Hz (6 Hz with 10:1 probe) ..........................-1.5%
50 Hz (5 Hz with 10:1 probe) .............................-2%
33 Hz (3.3 Hz with 10:1 probe) ..........................-5%
10 Hz (1 Hz with 10:1 probe) ...........................-30%
DC Rejection (only VAC) ....................................>50 dB
Common Mode Rejection (CMRR) ........ >100 dB @ DC
Full Scale Reading .....................................5000 counts
The reading is independent of any signal crest factor.
Peak
Modes ........................ Max peak, Min peak, or pk-to-pk
Ranges ........................ 500 mV, 5V, 50V, 500V, 1250V
Accuracy:
Max peak or Min peak ........................ 5% of full scale
Peak-to-Peak.................................... 10% of full scale
Full Scale Reading .......................................500 counts
Frequency (Hz)
Ranges ................. 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz,
100 kHz,1 MHz, 10 MHz, and 50 MHz (Fluke 123) or
Frequency Range in Continuous Autoset ......................
Specifications
Dual Input Meter
±(30% +25 counts)
>60 dB @ 50, 60, or 400 Hz
70MHz (Fluke 124)
15 Hz (1 Hz) to 50 MHz
4
65