FAQ-WT2000 Digital Power Meters

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	Frequently Asked Questions WT2000 Digital Power Meters

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Questions

1.	What is the output resolution of the D/A (analog) option?
2.	I'm thinking of connecting the output of the Clamp Probe (Model 751550) to the external shunt input terminal on a WT1000/WT2000 Series instrument. What kind of terminal does the external shunt input use?
3.	How much time is required to print using the internal printer when performing harmonic analysis? I want to know the times for up to the 25th and 50th orders.
4.	Can the width of the harmonic analysis window be increased beyond 16?
5.	Is it possible to alter the standard model to a custom specification for the current input range?

Questions and Answers

1. What is the output resolution of the D/A (analog) option?

12 bits.

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2. I'm thinking of connecting the output of the Clamp Probe (Model 751550) to the external shunt input terminal on a WT1000/WT2000 Series instrument. What kind of terminal does the external shunt input use?

A BNC connector. The output terminal on the Clamp Probe (Model 751550) is a banana plug. Use the Banana-to-BNC Conversion Adapter (Model 366921, sold separately) to connect to the external shunt input terminal.

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3. How much time is required to print using the internal printer when performing harmonic analysis? I want to know the times for up to the 25th and 50th orders.

Output function: HAr
When the default output item is set to 1, the printout time for up to the 50th order is about 116 seconds. The printout time for up to the 25th order is about 75 seconds.

Output function: HAr
When the default output item is set to 2, the printout time for up to the 50th order is about 41 seconds. The printout time for up to the 25th order is about 27 seconds.

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4. Can the width of the harmonic analysis window be increased beyond 16?

In order to analyze the harmonics by the PLL synchronization, the maximum possible window width is automatically determined depending on the frequency of the fundamental wave of the input signal (fundamental frequency f).

When the fundamental frequency f of the input signal is 40 =/< f < 70 Hz, the width cannot be set higher than 16.
The following are the settings possible given different fundamental frequencies f:
10 =/< f < 20 Hz: 1 to 4
20 =/< f < 40 Hz: 1 to 8
40 =/< f < 70 Hz: 1 to 16
70 =/< f < 130 Hz: 1 to 32
130 =/< f < 250 Hz: 1 to 64
250 =/< f =/< 440 Hz: 1 to 128