Users manual
ET1260B and ET1260A
6 1/2 Digit Multimeter
45
Note: Test condition is under the condition of 4 1/2 digits, AZ off, display off; these rates are
not lower than measurement rate under other conditions.
Function
Digit
Setting
Integral time
Measurement/sec
ond [1]
DC voltage
DC current
Resistance
6 1/2
100PLC
2s
0.5
6 1/2
10PLC
200ms
5
6 1/2
2PLC
40ms
25
5 1/2
1PLC
20ms
50
5 1/2
0.2PLC
4ms
250
4 1/2
0.1
2ms
500
4 1/2
0.02
0.4ms
2500
AC voltage
AC current
6 1/2
3Hz
0.14
6 1/2
20Hz
1
6 1/2
200Hz
1.6
6 1/2
200Hz
6
Frequency
and
period
6 1/2
1s
1
5 1/2
100ms
9.8
4 1/2
10ms
80
[1] The typical measurement rate during AZ off, AZ integral time should not be more than signal
integral time.
Uncertainty indicator refers to the technical indicator 1 hour after pre-heating and in using
Auto
Zero
function, and the 24-hour indicator is relative to calibration standard, and test standard
complies with
GB/T 13978-2008 Digit Multimeter
.
6.1 DC Characteristics
6.1.1 Basic characteristics
DC voltage:
Maximum input:
≥
1000V, all the measurement ranges;
Common mode control:
≥
140dB, 50 or 60H
z±
0.1% (1kΩ imbalance);
Series-mode control:
≥
60dB, when PLC is 1 or more and power frequency is ±0.1%;
≥
0dB, when PLC is <1;
Input resistance: 100mv, 1V and 10V measurement ranges: 10MΩ or >10GΩ are
available
100V and 1000V measurement ranges: 10MΩ±1%
Measurement method: Multi-slope mode converter;
A/D linearity: 2ppm measurement value+1ppm measurement range;
Input offset current: when it is <30pA and 25
℃
.
DC current:
Input protection: built-in fuses+ external replaceable fuses
Resistance
：
The listed indicator is four-wire or two-wire resistance measurement function adopting
zero setting function. If it does not adopt zero setting function, it is allowed to increase
