[1] Specifications are for 30 minute warm–up, “slow” measurement rate and 18℃ - 28℃
calibration temperature.
[2] 20% over range on all ranges, except DCV 1000V, ACV 750V, DCI and ACI 10A range.
[3] Specifications are for sine wave input >5% of range. 750V range is limited to 8x10
7
Volt-Hz.
For inputs from 1% to 5% of range and <50 kHz, add 0.1% of range additional error. For 50
kHz to 100 kHz, add 0.13% of range.
[4] Specifications are for sine wave input >5% of range. Add 0.1% of the range for the sine
wave input is 1%~5% of the range.
[5] For continuous current which is higher than DC 7A or AC RMS 7A, disconnecting for 30s after
30s connection.
[6] For frequency <100 kHz. Please refer to the “
Crest Factor Errors (non-sinusoidal inputs)
”
section described on Page 5-3 for bandwidth error of other frequency.
True RMS AC Voltage
Measurement Method: AC coupled true-RMS-measure, the DC component of input with up to
1000V on any range.
Crest factor: Crest factor on full range ≤ 3
Input Impedance: 1MΩ ± 2% in parallel with 100pF on any ranges
Input Protection: 750Vrms on all ranges
AC filter bandwidth: 20Hz~100kHz
CMRR (common mode rejection ratio): 60dB (For the 1kΩ unbalanced resistance in LO lead and
<60Hz, maximum ±500VDC).
True RMS AC Current
Measurement Method: DC coupled to the fuse and shunt. AC coupled true RMS measurement
(measures the ac component only)
Crest factor: Crest factor on full range ≤ 3
Max. Input: The DC + AC current peak value <300% of the range. The RMS
current including DC current is <10A.
Shunt Resistor: 0.008Ω for 2A, 10A
1Ω for 20mA, 200mA
Input Protection: Externally accessible 10A, 250V fast-melt fuse
Internal 12A, 250V slow-melt fuse
Setting time attentions:
Make sure the RC circuit of input terminal has been completely stable (up to 1s) before accurate
measurement.
Input >300Vrms (or >5Arms) will cause the self heating of the signal conditioning component to
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