Keysight U1272A - Page 160

5 Characteristics and Specifications
Electrical Specifications
160 U1271A/U1272A User’s Guide
Diode
3 V
[3]
0.0001 V 0.5% + 5 0.5% + 5
Approx.
1 mA to
2 mA
--
Auto
[4]
0.0001 V - 0.5% + 5
Approx.
0.1 mA to
0.3 mA
--
Notes for diode specifications:
1 Overload protection: 1000 Vrms for short circuits with <0.3 A current.
2 Built-in buzzer beeps continuously when the voltage measured is less than 50 mV and beeps once for forward-biased
diode or semiconductor junctions measured between 0.3 V and 0.8 V (0.3 V ≤ reading ≤ 0.8 V).
3 Open voltage for diode: <+3.3 V DC
4 Open voltage for Auto-diode: <+2.5 V DC and >–1.0 V DC
Current
300 μA
[1]
0.01 μA 0.2% + 5 0.2% + 5 - <0.04 V -
3000 μA
[1]
0.1 μA 0.2% + 5 0.2% + 5 - <0.4 V -
30 mA
[1]
0.001 mA 0.2% + 5 0.2% + 5 - <0.08 V -
300 mA
[1][3]
0.01 mA 0.2% + 5 0.2% + 5 - <1.00 V -
3 A
[2]
0.0001 A 0.3% + 10 0.3% + 10 - <0.1 V -
10 A
[2][4]
0.001 A 0.3% + 10 0.3% + 10 - <0.3 V -
Notes for DC current specifications:
1 Overload protection for 300 μA to 300 mA range: 0.44 A/1000 V; 10 × 35 mm fast-acting fuse
2 Overload protection for 3 A to 10 A range: 11 A/1000 V; 10 × 38 mm fast-acting fuse
3 Specification for 300 mA range: 440 mA continuous.
4 Specification for 10 A range: 10 A continuous. Add 0.3% to the specified accuracy when measuring signals >10 A to 20 A
for 30 seconds maximum. After measuring currents >10 A, cool down the multimeter for twice the duration of the
measured time before proceeding with low current measurements.
Table 5-1 DC specifications (continued)
Function Range Resolution
Accuracy Test current
Burden
voltage
Input
impedance
U1271A U1272A (where applicable)