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Users manual
6.2.1 Additional error
Integral time
Power period number
NPLC
100 PLC
10 PLC
2 PLC
1 PLC
0.2 PLC
0.1PLC
0.02PLC
6.3 AC Characteristics
6.3.1 Basic characteristics
AC voltage:
AC voltage technical indicator refers to the technical indicator under AC sine signal with >5%
measurement range, and for the 1%-5% measurement ranges and <50 kHz signals, the allowable
increased error is 0.1% of the measurement range, and for frequency of 50kHz-100kHz, the
allowable increased error is 0.13% of the measurement range.
Maximum input: 750Vrms.
Input impedance: 1 MΩ±1%, shunt capacitance <100pF
Measurement method: AC coupling, virtual value response.
Maximum DC offset: not lower than 1000V.
AC filter bandwidth:
Slow: 3Hz-300 kHz;
Mid: 20Hz-300kHz;
Fast: 200Hz-300kHz;
Common mode control: 70 dB，50Hz（or 60 Hz）±0.1% (1 kΩimbalance).
Maximum crest factor (CF): 5:1, in case of full measurement range.
Additional crest factor error (<100 Hz): CF 1-2，0.05 %；
CF 2-3，0.2 %；
CF 3-4，0.4 %；
Voltage frequency product: 8×10
Sine wave transfer accuracy: 10Hz-50kHz：20ppmFS；
AC current:
The following AC current technical indicator refers to the technical indicator of sine wave whose
amplitude is larger than 5% of measurement range, and for input of 1%-5% of measurement
range, the allowable increased additional error is 0.1% of the measurement range.
Input protection: Built-in fuses + external replaceable fuses;
Measurement method: AC coupling, virtual value response;
ET3260 and ET3260A
Digit
DC voltage (% of
measurement range)
6½
0
6½
0
6½
0
5½
0.001
5½
0.001 + 20uV
4½
0.002 + 20uV
4½
0.010 + 20uV
7
HzV, all the measurement ranges.
6 1/2 Digit Multimeter
Additional error
DC current (% of
measurement range)
0
0
0
0.001
0.001 + 4uA
0.002 + 4uA
0.010 + 4uA
CF 4-5，0.5 %.
50kHz-300kHz：50ppmFS.
48
Resistance
(%
of
measurement range)
0
0
0
0.001
0.001 + 20mΩ
0.002 + 20 mΩ
0.010 + 20 mΩ
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