Frequency Specifications; Duty Cycle And Pulse Width Specifications; Table 5-11 Frequency Specifications; Table 5-12 Duty Cycle And Pulse Width Specifications - Agilent Technologies u1273a User Manual

Frequency specifications

Table 5-11 Frequency specifications

Range
99.999 Hz
999.99 Hz
9.9999 kHz
99.999 kHz
999.99 kHz
>1 MHz
Notes for frequency specifications:
1 Overload protection: 1000 V; input signal is <20,000,000 V × Hz (product of voltage and frequency).
2 The frequency measurement is susceptible to error when measuring low-voltage and low-frequency signals. Shielding
inputs from external noise pickup is critical for minimizing measurement errors. Turning on the low-pass filter may help
you to filter out the noise and achieve a stable reading.

Duty cycle and pulse width specifications

Table 5-12 Duty cycle and pulse width specifications

Function
Duty cycle
Notes for duty cycle specifications:
1 The accuracy for duty cycle and pulse width measurements is based on a 3 V square wave input to the DC 3 V range. For
AC couplings, the duty cycle range can be measured within the range of 10% to 90% for signal frequencies >20 Hz.
2 The range of the duty cycle is determined by the frequency of the signal:
{10 μs × frequency × 100%} to {[1 – (10 μs × frequency)] × 100%}
U1273A/U1273AX User's Guide
Resolution
0.001 Hz
0.01 Hz
0.0001 kHz
0.001 kHz
0.01 kHz
0.1 kHz
Mode
DC coupling
AC coupling
Characteristics and Specifications
Accuracy
0.02% + 5
0.005% + 5
0.005% + 5
0.005% + 5
0.005% + 5
0.005% + 5 @ <1 MHz
Range Resolution
99.99%
99.99%
Electrical Specifications
Minimum input frequency
0.5 Hz
Accuracy at full scale
- 0.3% per kHz + 0.3%
- 0.3% per kHz + 0.3%
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