31
9.8 Frequency measurement
Range
Maximum
measurement
range
Resolution
Accuracy ( % of r
counts)
ETX-1825
ETX-2025
100Hz
1~99.999Hz
0.001Hz
0.02+1
0.01+1
1000Hz
100~999.99Hz
0.01Hz
10kHz
1k~9.9999kHz
0.1Hz
100kHz
10k~99.999kHz
1Hz
Sensitivity: 10Hz
~
10kHz
,
Vp-p≥1V; rest:Vp-p≥2V.
Wave form: Square wave. 5 counting points should be added to errors of other wave forms.
Commercial frequency can be measured directly.
9.9 Frequency source
Range
Maximum output
range
Resolution
Accuracy ( % of r
counts)
ETX-1825
ETX-2025
200Hz
0~200Hz
0.01Hz
0.02+1
0.01+1
2000Hz
0~2000Hz
0.1Hz
20kHz
0~20kHz
1Hz
Output amplitude: ≥4.5Vp-p
;
Wave form: Square wave
9.10 Temperature, thermocouples
Graduation
Range
Resolution
Accuracy (
℃
)
ETX-1825
ETX-2025
J
-200
℃~
0
℃
0
℃~
1200
℃
0.1
℃
1.5
℃
1.0
℃
1.0
℃
0.7
℃
K
-200
℃~
0
℃
0
℃~
1370
℃
0.1
℃
1.8
℃
1.2
℃
1.2
℃
0.8
℃