Tonghui TH1953 - Page 9

9
AC voltage test technical indicators
[6] [9] [10]
Range
Resolution
Full Scale
Reading
1 year T
CAL
± 5°C
3-5 Hz
5-20 Hz
20Hz-20kHz
20-50kHz
50-100 kHz
100-300kHz
100mV
1uV
119.999mV
1.00+0.03
0.38+0.03
0.10+0.03
0.15+0.05
0.63+0.08
4.00+0.50
1V
10uV
1.19999V
1.00+0.03
0.38+0.03
0.10+0.03
0.15+0.05
0.63+0.08
4.00+0.50
10V
100uV
11.9999V
1.00+0.03
0.38+0.03
0.10+0.03
0.15+0.05
0.63+0.08
4.00+0.50
100V
1mV
119.999V
1.00+0.03
0.38+0.03
0.10+0.03
0.15+0.05
0.63+0.08
4.00+0.50
750V
[5]
10mV
750.00V
[3]
1.00+0.03
0.38+0.03
0.10+0.03
0.15+0.05
0.63+0.08
4.00+0.50
AC current test technical indicators
[6] [10] [11]
Range
Voltage drop
Resolution
Full Scale
Reading
1 year
T
CAL
± 5°C
3-5 Hz
5-20 Hz
20Hz-10kHz
100.000uA
<0.011V
1nA
119.999uA
[1]
1.00+0.03
0.5+0.03
0.20 + 0.04
1.00000mA
<0.011V
10nA
1.19999mA
1.00+0.03
0.5+0.03
0.20 + 0.04
10.0000mA
< 0.05 V
0.1uA
11.9999mA
[1]
1.00+0.03
0.5+0.03
0.20 + 0.04
100.000mA
< 0.5 V
1uA
119.999mA
1.00+0.03
0.5+0.03
0.20 + 0.04
1.00000A
< 0.7 V
10uA
1.19999A
1.00+0.03
0.5+0.03
0.20 + 0.04
3.00000A
< 2.0 V
10uA
3.00000A
[2] [3]
1.00+0.03
0.5+0.03
0.25+0.04
10.0000A
< 0.5 V
100uA
11.9999A
[4]
1.00+0.03
0.5+0.03
0.30+0.04
Frequency test count indicator
[13] [14]
Frequency
Resolution
Full Scale
Reading
1 year
T
CAL
± 5°C
3Hz - 10Hz[2]
10uHz
9.99999Hz
0.050 + 50
10Hz - 100Hz
100uHz
99.9999Hz
0.010 + 10
100Hz - 1kHz
1mHz
999.999Hz
0.005 + 2
1kHz - 10kHz
10mHz
9.99999kHz
0.005 + 2
10kHz - 100kHz
0.1Hz
99.9999kHz
0.005 + 2
100kHz - 300kHz
1Hz
300.000kHz
0.005 + 2
300kHz - 1MHz[3]
1Hz
999.999kHz
0.005 + 2
[1]. For DC: The technical specifications are valid when the instrument has preheated after 60 minutes, the
integration time is set to 10 or 100 NPLC, and auto zero is enabled. For AC: The technical specifications are valid
after 60 minutes of preheating, slow AC filtering, and sine wave.
[2]. Outside the range of TCAL ± 5 °C, the temperature coefficient is increased by 1 for every 1 degree Celsius
change.
[3]. Relevant calibration standards.
[4]. The smallest data change that can be displayed.
[5]. Full-scale accuracy, there is need to perform NULL (clearing) operation in order to get better accuracy.
[6]. DC 1000V, AC 750V, AC current 3A and DC current 3A can only test 5% of the overrange.
[7]. When measuring resistance, it is better to use shielded line test when the resistance is greater than 100kΩ.
Because the cutting magnetic field generates an induced current, and the large resistor has a relatively small test