E1412A Datasheet, PDF (6/11 Pages) Agilent(Hewlett-Packard) – 6.5-Digit High-Accuracy Multimeter C-Size

AC Specifications (continued)
Additional AC Specifications
Low Frequency Errors (% of reading)
Crest Factor Errors (non-sinewave)*
Frequency

AC Filter
Crest Factor Error (% of reading)
Slow
Medium
Fast
10 Hz-20 Hz
0
0.74
-
1-2
0.05%
20 Hz-40 Hz
0
0.22
-
2-3
0.15%
40 Hz-100 Hz
0
0.06
0.73
3-4
0.30%
100 Hz-200 Hz
0
0.01
0.22
4-5
0.40%
200 Hz-1 kHz
0
0
0.18
>1 kHz
0
0
0
*For frequencies below 100 Hz, slow ac filter specified for sinewave input only.
Noise Rejection: (For 1 kΩ unbalance in LO lead.)
AC CMMR:
70 dB
True RMS AC Voltage:
Measurement method: AC-coupled True RMS — measures the ac component of the input

with up to 300 Vdc of bias on any range. (Max ac+dc = 300 V rms.)
Crest factor:
Maximum 5:1 at full scale
AC filter bandwidth: Slow:
3 Hz-300 kHz

Medium: 20 Hz-300 kHz

Fast:
200 Hz-300 kHz
Input impedance:
1 MΩ ±2%, in parallel with 100 pF
Input protection:
300 Vrms all ranges
True RMS AC Current:
Measurement method: Direct couple to the fuse and shunt. ac -coupled True RMS measurement

(measures the ac component only).
Shunt resistor:
0.1 Ω for 1 A and 3 A ranges
Burden voltage:

1 A range: <1 Vrms
3 A range: <2 Vrms
Input protection:
Externally accessible 3 A, 250 V fuse
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