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U1280 データシート(PDF) 9 Page - Keysight Technologies

部品番号 U1280
部品情報  U1280 Series Handheld Digital Multimeters
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メーカー  KEYSIGHT [Keysight Technologies]
ホームページ  http://www.keysight.com
Logo KEYSIGHT - Keysight Technologies

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09 | Keysight | U1280 Series Handheld Digital Multimeters - Data Sheet
DC specification for U1281A/U1282A
Function
Range
Resolution
Accuracy ± (% of reading +
counts of least significant digit)
Test current / burden voltage
Voltage3,4
60 mV
0.001 mV
0.05 % + 101
600 mV
0.01 mV
0.025 % + 51
6 V
0.0001 V
0.025 % + 52
60 V
0.001 V
0.025 % + 5
600 V
0.01 V
0.025 % + 5
1000 V
0.1 V
0.025 % + 5
Current3,4,5
600 µA
0.01 µA
0.12 % + 10
0.0301 V (50 Ω)
6 mA
0.0001 mA
0.05 % + 5
0.312 V (50 Ω)
60 mA
0.001 mA
0.10 % + 201
0.115 V (0.5 Ω)
600 mA
0.01 mA
0.15 % + 51
0.896 V (0.5 Ω)
6 A
0.0001 A
0.3 % + 10
0.240 V (0.01 Ω)
10 A2
0.001 A
0.3 % + 5
0.4 V (0.01 Ω)
Diode test1,2,3
0.0001 V
0.5 % + 10
< 1.7 mA
Function
Range
Resolution
Accuracy ± (% of reading +
counts of least significant digit)
Continuity threshold
Resistance/
audible continuity1,2
60 Ω5
0.001 Ω
0.15 % + 203
5 ± 3 Ω
600 Ω
0.01 Ω
0.05 % + 103
25 ± 11 Ω
6 kΩ
0.0001 kΩ
0.05 % + 2
0.123 ± 0.052 kΩ
60 kΩ
0.001 kΩ
0.05 % + 2
1.12 ± 0.5 kΩ
600 kΩ
0.01 kΩ
0.05 % + 2
12.1 ± 5.2 kΩ
6 MΩ
0.0001 MΩ
0.15 % + 2
0.109 ± 0.05 MΩ
60 MΩ4
0.001 MΩ
1.5 % + 3
0.109 ± 0.05 MΩ
600 MΩ4,5,6
0.01 MΩ
3.0 % + 3 (< 100 MΩ)
8.0 % + 3 (< 600 MΩ)
0.109 ± 0.05 MΩ
600 nS
0.01 nS
1 % + 20
None
Notes for DC specifications
A. Notes for voltage specification.
1. The accuracy is specified after NULL function is used to zero out thermal
effect (by shorting test leads).
2. The temperature coefficient for 6 V range is 0.075 x (specified accuracy) /
°C (from –20 °C to 18 °C or 28 °C to 55 °C).
3. The accuracy is specified for 10 MΩ (nominal) input impedance.
4. Overload protection for 60 mV and 600 mV ranges: 1000 Vrms for circuits
< 0.3 A short circuit current. Overload protection for other ranges: 1000 Vrms.
B. Notes for current specification
1. Current can be measured up to 440 mA continuously. Maximum of
20 hours for measuring current more than 440 mA. 60 mA and 600 mA
ranges have thermal effect of 0.35 µA/mA to be offset after current
applied to these ranges. Cool down the meter for at least 6 seconds if
100 mA was applied, and at least 3 minutes if 600 mA was applied; or
alternatively use the NULL function to zero-out thermal effect with open
test lead before measuring the signal.
2. Current can be measured up to 10 A continuously. Maximum of 30 seconds
for measuring current more than 10 A to 20 A, add 0.3 % to specified
accuracy. The multimeter needs to be cool down after measuring current
that is more than 10 A. Cool down the meter for twice the duration of the
measured time and use NULL function to zero-out thermal effect before
proceeding with lower current measurement.
3. 600 µA to 60 mA ranges (connection with mA terminal) overload protection
by 10 x 35 mm, 440 mA/1000 V, 10 kA minimum fast-acting fuse.
4. 6 A and 10 A ranges (connection with A terminal) overload protection by
10 x 38 mm, 11 A / 1000 V, 20 kA minimum fast-acting fuse.
5. Ensure good ventilation and no heat element close to the meter.
C. Notes for diode test specification
1. Overload protection: 1000 Vrms for circuits < 0.3 A short circuit current.
2. Built-in buzzer sounds when reading is below 0.05 V approximately, and
single tone for normal forward-biased diode or semiconductor junction as
0.3 V ≤ reading ≤ 0.8 V.
3. The maximum threshold voltage display is less than +3.1 V.
D. Notes for resistance/audible Continuity specification
1. Maximum open voltage: < +2.7 V
2. Built-in buzzer sounds as transient when resistance less than 25 ± 11 Ω.
It may capture the intermittent for longer than 1 ms.
3. The accuracy is specified after Math Null, which is used to subtract the
test lead resistance and the thermal effect. Ensure good ventilation and
no heat element close to the meter.
4. For 60 MΩ and 600 MΩ ranges, the R.H. is specified for < 60 % at 30 °C.
5. Only available in U1282A
6. For 600 MΩ range: temperature coefficient is 0.1 x (specified accuracy) /
°C (from –20 °C to 18 °C or 28 °C to 55 °C).


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