123B/124B/125B
Users Manual
72
Input A and Input B
DC Voltage (VDC)
Ranges ................................................................ 500 mV, 5 V, 50 V, 500 V, 750 V
Accuracy ............................................................. ±(0.5 % + 5 counts)
Normal Mode Rejection (SMR) ........................... >60 dB @ 50 or 60 Hz ±0.1 %
Common Mode Rejection (CMRR) ..................... >100 dB @ DC
>60 dB @ 50, 60, or 400 Hz
Full Scale Reading .............................................. 5000 counts
True RMS Voltages (VAC and VAC+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 (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)
5 MHz to 12.5 MHz ................................... ±(30 % + 25 counts)
5 MHz to 20 MHz
(without test leads or probes) ................... ±(30 % + 25 counts)
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 %
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