U1240 Datasheet, PDF (5/9 Pages) Agilent(Hewlett-Packard) – Agilent U1240 Series Handheld Digital Multimeters

Electrical Specifications
Switch counter definition
Switch condition^{1, 2}
Low level
Intermittent⁴
Circuit switch
Normally close
Close to open
Display³
Lo
Number of switch count
High level
Normally open
Hi
Intermittent⁵
Open to close
Number of switch count
1. Detects intermittent Opens or Closes lasting for at least 250 μsec.
2. Test current of 0.5 mA with maximum open circuit voltage of 2.8 V is used.
3. Maximum count reading: 199.99 M (display “OL” when achieving 2 x 10⁸ and thereafter).
4. Count only low to high transition for initial switch condition of Low.
5. Count only high to low transition for initial switch condition of High.
Switch threshold
< 370 ohms
Low to high transition
> 430 ohms
High to low transition
Frequency specifications
Range
Resolution
Accuracy
100.00 Hz
0.01 Hz
1000.0 Hz
0.1 Hz
10.000 kHz
0.001 kHz
0.03%+3
100.00 kHz
0.01 kHz
1000.0 kHz¹
0.1 kHz
1. Effective frequency measurement of up to 200 kHz; refer to frequency sensitivity table below for details.
Minimum input frequency
1 Hz
Frequency sensitivity during voltage measurement
Input range (Maximum input for specified accuracy =
10 x Range or 1000 V)
1000.0 mV
10.000 V
100.00 V
1000.0 V
Minimum sensitivity (RMS sine wave)
20 Hz to 50 kHz 50 to 200 kHz
0.3 V
0.6 V
0.5 V
1.8 V
5V
10 V (< 100 kHz)
50 V
100 V (< 100 kHz)
Frequency sensitivity during current measurement
Input range
1000.0 µA
10000 µA
100.00 mA
440.00 mA
10.000 A
Minimum sensitivity (RMS sine wave)
20 Hz to 20 kHz
100 µA
500 µA
10 mA
50 mA
1A
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