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TRUE RMS AC VOLTAGE AND CURRENT CHARACTERISTICS - ACCURACY: ±(% of reading + % of range), 23°C ±5 °C
20kHz to 50 kHz: 0.11 + 0.05
50kHz to 100 kHz: 0.60 + 0.08
100Khz to 300 kHz: 4 + 0.5
How reliable are the AC voltage measurements at 200 kHz? I mean, is there a systematic behavior of the measurements when we move from 10kHz to 50 KHz, then to 100 kHz, then to 200 KHz?
I ask this because I have been using other equipments and usually I detect a systematic attenuation of the reported value with increasing frequency. In some cases, I still come to a correction table (for higher frequency measurements) for the equipment (after systematically comparing the results with a more precise equipment). Can I expect the same with 2015 of the accuracy error increases with frequency in a random way?
For the cases I mentioned, it seems that the input amplifier has this behavior. On the other hand, the higher is the frequency, the higher is also the demand in terms of sampling rate/processing time and this factor can also impact the accuracy of the measurements in a non-systematic way. Any hint about the 2015 performance in this aspect?
- Keithley Applications
- Posts: 2849
- Joined: June 10th, 2010, 6:22 am
- Country: United States
They all have the same analog input and AC to DC converter for ACV and ACI.
The bandwidth is to 300kHz.
The separation in bandwidth specs is just a place where the accuracy changes over from one frequency range to another.
Other than what is in the manual that is about it.
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