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7
Characteristics and Specifications
U1211A Electrical Specifications
U1211A Electrical Specifications
The accuracy is given as ± (% of reading + number of least significant
digit) at 23 °C ± 5 °C, with relative humidity less than 80% R.H.
DC specifications
Table 7-2 U1211A DC accuracy ± (% of reading + number of LSD)
Function
[1]
DC voltage
[2][4][5][8]
Resistance
[2][3][6]
Diode/Continuity
[7]
Capacitance
[1]
[2]
[3]
[4]
[5]
[6]
[7]
122
Range
Resolution
400 V
1000 V
400 Ω
4 kΩ
0.001 kΩ
Diode
0.001 V
400 µF
0.1 µF
4000 µF
1.0 µF
Input impedance: 10 MΩ (nominal).
Overload protection: 1000 V
Maximum open voltage: < +3.1 V.
Instant continuity: built-in beeper will sound when resistance is less than 10 Ω.
The accuracy of 400 Ω and 4 kΩ is specified after relative function, which is used to substrate the
test lead resistance and the thermal effect.
Built-in beeper will sound when reading is below approximately 50 mV. Also, single-tone beeping
for normal forward-biased diode or semiconductor junction with bias voltage between 0.3 V and
0.8 V.
With film capacitor or better, use null operation to zero out residual.
Accuracy
0.1 V
0.5% + 3
1.0 V
0.5% + 3
0.1 Ω
0.5% + 3
0.5% + 2
0.5% + 2
2.0 % + 4
3.0% + 4
for circuits < 0.3 A of short circuit current.
rms
Test current or burden voltage
1000 V
rms
0.8 mA
80 µA
0.8 mA
1000 V
rms
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