Specifications 7
U1253B User’s and Service Guide 189
Frequency Sensitivity Specifications
For voltage measurements
Pulse width
- 500 ms 0.01 ms 0.2% + 3
- 2000 ms 0.1 ms 0.2% + 3
Notes for pulse width specifications:
1 The accuracy for duty cycle and pulse width is based on a 5 V square wave input into the DC 5 V range.
2 Positive or negative pulse width must be greater than 10 µs and the range of duty cycle should be considered. The range
of pulse width is determined by the frequency of the signal.
Table 7-9 Duty cycle and pulse width specifications
Function Mode Range Resolution Accuracy (at full scale)
Table 7-10 Frequency sensitivity and trigger level specifications for voltage measurements
Input range
[1]
Minimum sensitivity
(RMS sine wave)
Trigger level for DC coupling
20 Hz to 200 kHz > 200 kHz to 500 kHz < 100 kHz > 100 kHz to 500 kHz
50 mV 10 mV 25 mV 10 mV 25 mV
500 mV 70 mV 150 mV 70 mV 150 mV
1000 mV 120 mV 300 mV 120 mV 300 mV
5 V 0.3 V 1.2 V 0.6 V 1.5 V
50 V 3 V 5 V 6 V 15 V
500 V 30 V < 100 kHz - 60 V -
1000 V 50 V < 100 kHz - 120 V -
Notes for frequency sensitivity and trigger level specifications for voltage measurements:
1 Maximum input for specified accuracy = 10 × range or 1000 V.
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