Datasheet

14
U1453A/U1461A frequency specifications
Frequency specifications with accuracy of ± (% of reading + number of least significant digit)
1, 2
Range Resolution Accuracy Minimum input frequency
99.99 Hz 0.01 Hz 0.02% + 1 0.5 Hz
999.9 Hz 0.1 Hz 0.02% + 1
9.999 kHz 0.001 kHz 0.02% + 1
99.99 kHz 0.01 kHz 0.02% + 1
999.9 kHz 0.1 kHz 0.2% + 1 @ ≤ 100 kHz
9.999 MHz 0.001 MHz 0.2% + 1 @ ≤ 100 kHz
1. 
2. 
Turning on the low-pass filter (model U1461A only) may help you to filter out the noise and achieve a stable reading.
U1461A duty cycle and pulse width specifications
Duty cycle and pulse width specifications with accuracy of ± (% of reading + number of least significant digit)
2
Function Mode Range Resolution Accuracy at full scale
Duty cycle
2
DC coupling 99.9% – 0.3% per kHz + 0.3%
AC coupling 99.9% – 0.3% per kHz + 0.3%
Pulse width
3
– 999.9 ms 0.01 ms (duty cycle accuracy/frequency) + 0.01 ms
– 2000 ms 0.1 ms (duty cycle accuracy/frequency) + 0.1 ms
1. 
2. 
Turning on the low-pass filter (model U1461A only) may help you to filter out the noise and achieve a stable reading.
3. The accuracy for duty cycle and pulse width measurements is based on a 6 V square-wave input to the DC 6 V range. For AC couplings, the duty cycle range can be measured within the range of 10%

4. The range of the duty cycle is determined by the frequency of the signal: {10 s × frequency × 100%} to {[1 – (10 s × frequency)] × 100%}
5. 
U1453A/U1461A temperature specifications
Temperature specifications with accuracy of ± (% of reading + offset error)
1
Thermal type Range Resolution Accuracy
K –200 to 1372 °C 0.1 °C 1% + 1 °C
–328 to 2502 °F 0.1 °F 1% + 1.8 °F
J –200 to 1200 °C 0.1 °C 1% + 1 °C
–346 to 2192 °F 0.1 °F 1% + 1.8 °F
1. The following statements are true for temperature measurements:
 
 
 
RMS
or 60 V
DC

 
to measure temperature without ambient compensation and keep the thermocouple probe as close to the tester as possible (avoid contact with any surface that has a different temperature from the
ambient temperature).
 
calibrator and tester are set with internal reference (with internal ambient compensation), some deviations may show between the readings of the calibrator and tester, due to differences in ambient
compensation between the calibrator and tester. Keeping the tester close to the output terminal of calibrator will help reduce the deviation.
 