Specifications 7
U1253B User’s and Service Guide 179
AC+DC Specifications
These specifications are defined for measurements of sine
wave, taken after at least 1 minute warm- up.
[1]
Additional error to be added for frequency > 15 kHz and signal input < 10% of range: 3 counts of LSD per kHz.
Table 7- 4 Accuracy specifications ± (% of reading + number of LSD) for AC+DC voltage
Range Resolution
Accuracy for AC+DC voltage
[2] [7]
30 Hz to 45 Hz 45 Hz to 1 kHz 1 kHz to 5 kHz 5 kHz to 15 kHz 15 kHz to 100 kHz
[1]
50.000 mV 0.001 mV 1.5+80 0.4+60 0.7+60 0.8+60 3.5+220
500.00 mV 0.01 mV 1.5+65 0.4+30 0.4+30 0.8+45 3.5+125
1000.0 mV 0.1 mV 1.5+65 0.4+30 0.4+30 0.8+45 3.5+125
5.0000 V 0.0001 V 1.5+65 0.4+30 0.6+30 1.5+45 3.5+125
50.000 V 0.001 V 1.5+65 0.4+30 0.4+30 1.5+45 3.5+125
500.00 V 0.01 V 1.5+65 0.4+30 0.4+30 No spec. No spec.
1000.0 V 0.1 V 1.5+65 0.4+45 0.4+45 No spec. No spec.
Table 7- 5 Accuracy specifications ± (% of reading + number of LSD) for AC+DC current
Range Resolution
Accuracy for AC+DC current
[4] [7]
Overload protection30 Hz to 45 Hz 45 Hz to 1 kHz 1 kHz to 20 kHz
500.00 μA
[3]
0.01 μA 1.1+25 0.8+25 0.8+25 440 mA
5000.0 μA0.1 μA 1.1+25 0.8+25 0.8+25 10 × 35 mm
50.000 mA 0.001 mA 1.2+25 0.9+25 0.9+25 AC/DC 1000 V
440.00 mA 0.01 mA 1.2+25 0.9+25 0.9+25 30 kA/fast-acting
5.0000 A 0.0001 A 1.8+30
[5]
0.9+30 3.3+70, < 3A / 5 kHz 11 A
10.000 A 0.001 A 1.8+30
[5]
0.9+25 3.3+70, < 3A / 5 kHz