Agilent Technologies U1252B User's Manual And Service Manual page 180

7 Specifications
AC specifications for U1252B
Table 7-4 U1252B accuracy specifications ± (% of reading + number of LSD) for true RMS AC voltage
Function Range
50.000 mV
500.00 mV
1000.0 mV
Voltage
5.0000 V
[2][3]
50.000 V
500.00 V
1000.0 V
Notes for U1252B AC voltage specifications:
1 The additional error to be added as frequency > 15 kHz and signal input < 10% of range: 3 counts of LSD per kHz.
2 Input impedance: Refer to
3 Crest factor ≤ 3.0 at full scale, 5.0 at half scale except the 1000 mV and 1000 V ranges where it is 1.5 at full scale, 3.0 at
half scale. For non-sinusoidal waveform, add 0.1% of reading ± 0.3% of range.
Table 7-5 U1252B accuracy specifications ± (% of reading + number of LSD) for true RMS AC current
Function Range
500.00 µA
5000.0 µA
[5]
Current 50.000 mA
440.00 mA
5.0000 A
10.000 A
Notes for U1252B AC current specifications:
1 The additional error to be added as frequency > 15 kHz and signal input < 10% of range: 3 counts of LSD per kHz.
2 Input current > 35 µArms.
3 Current can be measured from 2.5 A up to 10 A continuously. Add 0.5% to the specified accuracy if the signal measured is
in the range of 10 A to 20 A and for a period of up to 30 seconds. After measuring current > 10 A, leave the meter to cool
down for a period that is twice the measuring time used before application of low current measurement.
4 Input current < 3 Arms.
5 Crest factor ≤ 3.0 at full scale, 5.0 at half scale except the 1000 mV and 1000 V ranges where it is 1.5 at full scale, 3.0 at
half scale. For non-sinusoidal waveform, add 0.1% of reading ± 0.3% of range.
6 Verified by design and type tests.
160
20 Hz –
Resolution 45 Hz
0.001 mV 1.5 + 60
0.01 mV 1.5 + 60
0.1 mV 1.5 + 60
0.0001 V 1.5 + 60
0.001 V 1.5 + 60
0.01 V 1.5 + 60
0.1 V 1.5 + 60
Table 7-19.
20 Hz – 45 Hz
Resolution
[2]
0.01 µA 1.0 + 20
0.1 µA 1.0 + 20
0.001 mA 1.0 + 20
0.01 mA 1.0 + 20
0.0001 A 1.5 + 20
[3]
0.001 A 1.5 + 20
Frequency
45 Hz – 1 kHz –
1 kHz 5 kHz
0.4 + 40 0.7 + 40
0.4 + 25 0.4 + 25
0.4 + 25 0.4 + 25
0.4 + 25 0.6 + 25
0.4 + 25 0.4 + 25
0.4 + 25 0.4 + 25
0.4 + 40 0.4 + 40
Frequency
45 Hz – 1 kHz 1 kHz – 20 kHz
0.7 + 20
0.7 + 20
0.7 + 20
0.7 + 20
[4]
0.7 + 20
[4]
0.7 + 20
Agilent U1251B/U1252B User's and Service Guide
5 kHz – 15 kHz –
15 kHz 100 kHz
0.75 + 40
0.75 + 40
0.75 + 40 3.5 + 120
1.5 + 40
1.5 + 40
-
-
[5]
20 kHz –
100 kHz
0.75 + 20 5 + 80
0.75 + 20 5 + 80
0.75 + 20 5 + 80
1.5 + 20 5 + 80
3 + 60
< 3 A/5 kHz
[1]
3.5 + 120
3.5 + 120
3.5 + 120
3.5 + 120
-
-
[1][6]
-