FAQ-Communications for WT series and PZ4000

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	Frequently Asked Questions Communications for WT series and PZ4000

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Questions

1.	How can I read out measured data using communications in normal mode?
2.	For the PZ4000 and WT1600 I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?
3.	For WT1000/2000 Series Instruments When Using Pre-IEEE488.2 Command Types I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?
4.	For WT1000/2000 Series Instruments When Using IEEE488.2 Command Types I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?
5.	For WT100/200 Series Instruments When Using Pre-IEEE488.2 Command Types I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?
6.	For the PZ4000 I was able to read out specific items using the procedure in A1 and A2. However, if data is read out from the measuring instrument repeatedly then the same data is read over and over until it is updated. Is there a way to make it so that it only reads out when the data is updated?
7.	For Instruments Other Than the PZ4000 When Using Pre-IEEE488.2 Command Types I was able to read out specific items using the procedure in A1 and A2. However, if data is read out from the measuring instrument repeatedly then the same data is read over and over until it is updated. Is there a way to make it so that it only reads out when the data is updated?
8.	For Instruments Other Than the PZ4000 When Using IEEE488.2 Command TypesM I was able to read out specific items using the procedure in A1 and A2. However, if data is read out from the measuring instrument repeatedly then the same data is read over and over until it is updated. Is there a way to make it so that it only reads out when the data is updated?
9.	For the PZ4000 and WT1600 How can I update the range on the measuring instrument using communications?
10.	For WT1000/2000 Series Instruments When Using Pre-IEEE488.2 Command Types How can I update the range on the measuring instrument using communications?
11.	For WT1000/2000 Series Instruments When Using IEEE488.2 Command Types How can I update the range on the measuring instrument using communications?
12.	For WT100/200 Series Instruments When Using Pre-IEEE488.2 Command Types How can I update the range on the measuring instrument using communications?
13.	For WT100/200 Series Instruments When Using IEEE488.2 Command Types How can I update the range on the measuring instrument using communications?

Questions and Answers

1. How can I read out measured data using communications in normal mode?

Send the appropriate command as shown below to your instrument, then read in all the data that is returned.
    PZ4000: "NUMERIC:NORMAL:VALUE?"
    WT1600: "NUMERIC:NORMAL:VALUE?"

    WT100/200 series instruments:
       Command type prior to IEEE488.2: "OD"
       Command type for IEEE488.2: "MEASURE:NORMAL:VALUE?"
    WT1000/2000 series instruments:
       Command type prior to IEEE488.2: "OD"
       Command type for IEEE488.2: "MEASURE:VALUE?"

Note
If you use pre-IEEE488.2 command types, the measuring instrument will respond to the "OD" command by writing multiple lines including the "END" line, and returning them one by one as they are requested.
Therefore after sending the "OD" command, lines must be read out repeatedly until the "END" string is received.

See the user's manual for your instrument for more information about the format of returned data from the various commands.

PZ4000 Power Analyzer Communications Interface User's Manual Page 4-65
WT1600 Digital Power Analyzer Communications Interface User's Manual Page 4-70
WT1010 Digital Power Meter User's Manual Pages App 1-14 through 1-16, and App 2-31 through 2-32
WT1030/1030M Digital Power Meter User's Manual Pages App 1-16 through 1-18, and App 2-31 through 2-33
WT2010 Digital Power Meter User's Manual Pages App 1-18 through 1-20, and App 2-39 through 2-40
WT2030 Digital Power Meter User's Manual Pages App 1-18 through 1-20, and App 2-39 through 2-41
WT110E/WT130 Digital Power Meter User's Manual Pages 11-4 through 11-6, and App 2-23 through 2-25
WT200 Digital Power Meter User's Manual Pages 10-5 through 10-8, and 14-28 through 14-30
WT210/230M Digital Power Meter User's Manual Pages 10-5 through 10-8, and 14-31 through 14-33

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2. For the PZ4000 and WT1600
I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?

First, set the data format for the data you want to read out. Send the "NUMERIC:FORMAT:ASCII" command to the measuring instrument. By sending this command, measured data read out using the "NUMERIC:NORMAL:VALUE?" command is output as an ASCII string.
Send the "NUMERIC:NORMAL:CLEAR:ALL" command to the measuring instrument. This command turns all items for output OFF. Therefore no items will be output if you send the "NUMERIC:NORMAL:VALUE?" command.
Next, send the "NUMERIC:NORMAL:ITEM1 URMS" command. This command sets item 1 of the data that is output using "NUMERIC:NORMAL:VLAUE?" to element 1's voltage RMS value (Urms) output.
In the same manner, you can send "NUMERIC:NORMAL:ITEM2 IRMS,1", and "NUMERIC:NORMAL:ITEM3 P,1" to set the second and third data to the current RMS value (Irms) and power value (P) output.
Use the following commands to enter the number of parameters to be read out by the "NUMERIC:NORMAL:VALUE?" command. (In this case, Urms, Irms, and P will be read out, so there are three parameters.) "NUMERIC:NORMAL:NUMBER 3"
Now if you send "NUMERIC:NORMAL:VALUE?" and read out the measured data, 3 data are output as shown in the following example.
Example Output: 4.083E+00,50.002E+00,202.65E+00
In steps 3 and 4 above, output items ("NUMERIC:NORMAL:ITEM"), Urms, Irms, and P are set to the 1st, 2nd, and 3rd data respectively, so in the example the first data (4.083E+00) is the Urms on element 1, the next data (50.002E+00) is Irms on element 1, and the last data (202.65E+00) is P on element 1.

(Supplement) In the above procedure using "NUMERIC:NORMAL:ITEM" you set each output item individually, but you can also specify all output items at once using a preset pattern. There are 4 preset patterns that can be used. For example, to use preset pattern, send the "NUMERIC:NORMAL:PRESET1" command to the measuring instrument.
For information on preset output item patterns, see the following:

PZ4000 Power Analyzer Communications Interface User's Manual Page 4-66 to 4-67
WT1600 Digital Power Analyzer Communications Interface User's Manual Page 4-70 to 4-71

You can also use preset pattern 1 to output Urms, Irms, and P as follows: Send the following 4 commands in order to the measuring instrument.

"NUMERIC:FORMAT ASCII"
"NUMERIC:NORMAL:PRESET 1"
"NUMERIC:NORMAL:NUMBER 3"
"NUMERIC:NORMAL:VALUE?"

When using a preset and there are a large number of items to be output, first, choose the closest preset pattern, then add a "NUMERIC:NORMAL:ITEM" command for each remaining item.

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3. For WT1000/2000 Series Instruments When Using Pre-IEEE488.2 Command Types
I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?

First, send the "OFDO" command. This command turns all items for output OFF. Therefore no items will be output if you send the "OD" command.

Next, send the "OF1,1" command to the measuring instrument. This command turns the voltage value (V) from element 1 ON, so that the voltage on element 1 will be read out.

In the same manner, send the "OF2,1" and "OF3,1" commands to turn ON the current value (A) and power value (W) output from element 1.
For details on the "OF" command, see the following:

WT1010 Digital Power Meter User's Manual Page App1-8
WT1030/WT1030M Digital Power Meter User's Manual Pages App1-9 through App1-10
WT2010 Digital Power Meter User's Manual Pages App1-10 through App1-11
WT2030 Digital Power Meter User's Manual Page App1-11

Now if you send "OD" and read out the measured data, 3 data are output as shown in the following example. Example Output: V 1N 004.083E+0,A 1N 050.008E+0,W 1N 0202.69E+0 In the example, the first data (004.083E+0) is the V value on element 1, the next data (050.008E+0) is the A value on element 1, and the last data (0202.69E+0) is the W value from element 1.
The "V….1N" portion before each value is called the header, and expresses, from left to right, the measurement function, element, and data condition. For details on the data output format, see the following:

WT1010 Digital Power Meter User's Manual Pages App1-14 through App1-16
WT1030/WT1030M Digital Power Meter User's Manual Pages App1-16 through App1-18
WT2010 Digital Power Meter User's Manual Pages App1-18 through App1-20
WT2030 Digital Power Meter User's Manual Pages App1-18 through App1-20

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4. For WT1000/2000 Series Instruments When Using IEEE488.2 Command Types
I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?

First, send the "MEASURE:ITEM:NORMAL:PRESET:CLEAR" command to the measuring instrument. This command turns all items for output OFF. Therefore no items will be output if you send the "MEASURE:VALUE?" command.
Next, send the "MEASURE:ITEM:NORMAL:V:ELEMENT1 ON" command. This command turns the voltage value (V) from element 1 ON, so that the voltage on element 1 will be read out.
In the same manner, send the "MEASURE:ITEM:NORMAL:A:ELEMENT1 ON" and " MEASURE:ITEM:NORMAL:W:ELEMENT1 ON" commands to turn ON the current value (A) and power value (W) output from element 1.
Now if you send "MEASURE:VALUE?" and read out the measured data, 3 data are output as shown in the following example.

Example Output: 4.083E+00,50.002E+00,202.65E+00

WT1010 Digital Power Meter User's Manual Page App2-32
WT1030/WT1030M Digital Power Meter User's Manual Page App2-32
WT2010 Digital Power Meter User's Manual Page App2-40
WT2030 Digital Power Meter User's Manual Page App2-40

"Output Format for Normal Measurement Mode," shows that the order of data output is: V1, A1, W1 etc. Therefore in the example, the first data (4.083E+00) is V1, the next data (50.002E+00) is A1, and the last data (202.65E+00) is W1.

(Supplement)
In the "MEASURE:ITEM:NORMAL:PRESET XXX" communications command which was sent first, ALL, DEFAULT1, and DEFAULT2 are available in addition to CLEAR, so you can output only the specified items of the measured values. Also, for example, if you want to output the VA item in addition to "DEFAULT1," you can send "MEASURE:ITEM:NORMAL:PRESET DEFAULT1", then send "MEASURE:ITEM:NORMAL:VA:ELEMENT1 ON" to add it to the DEFAULT1 item. On the other hand, if you want to remove W on element 1 from the "DEFAULT1" setting item, you can send "MEASURE:ITEM:NORMAL:PRESET DEFAULT1", then send "MEASURE:ITEM:NORMAL:W:ELEMENT1 OFF." In this way you can specify individual items for output by adding output items to or taking output items away from the CLEAR, ALL, DEFAULT1, and DEFAULT2 preset settings.

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5. For WT100/200 Series Instruments When Using Pre-IEEE488.2 Command Types
I was able to read in measured data following the procedure in A1, but it wouldn't output the exact data I needed. The data I want read out is V, A, and W on element 1. Can I have it read out only specific items?

First, send the "OF1,1,1" command. This command sets the voltage value (V) from element 1 to output to channel 1 (from among the 14 output channels), and causes the voltage of element 1 to be read out.

In the same manner, make the current (A) and power (W) on element 1 output to channels 2 and 3 respectively by sending the "OF2,2,1" command to the measuring instrument.

Next, turn the output on channels 4 through 14 OFF by sending the following commands: "OF4,0,1"?"OF5,0,1"?"OF6,0,1"?"OF7,0,1"?"OF8,0,1"?"OF9,0,1"? "OF10,0,1"?"OF11,0,1"?"OF12,0,1"?"OF13,0,1"?"OF14,0,1"
For details on the "OF" command, see the following:

WT110E/WT130 Digital Power Meter User's Manual Page App1-5
WT200 Digital Power Meter User's Manual Page 13-6 to 13-7
WT210/230M Digital Power Meter User's Manual Page 13-8

Now if you send "OD" and read out the measured data, 3 data are output as shown in the following example. Example Output: V 1N 004.083E+0,A 1N 050.008E+0,W 1N 0202.69E+0
In the example, the first data (004.083E+0) is the V value on element 1, the next data (050.008E+0) is the A value on element 1, and the last data (0202.69E+0) is the W value from element 1. The "V….1N" portion before each value is called the header, and expresses, from left to right, the measurement function, element, and data condition.
For details on the data output format, see the following:
- WT110E/WT130 Digital Power Meter User's Manual Page 11-4
- WT200 Digital Power Meter User's Manual Page 10-5
- WT210/230M Digital Power Meter User's Manual Page 10-5
For WT100/200 Series Instruments When Using IEEE488.2 Command Types
1. First, send the "MEASURE:NORMAL:ITEM:PRESET:CLEAR" command to the measuring instrument. This command turns all items for output OFF. Therefore no items will be output if you send the "MEASURE:NORMAL:VALUE?" command.
2. Next, send the "MEASURE:NORMAL:ITEM:V:ELEMENT1 ON" command. This command turns the voltage value (V) from element 1 ON, so that the voltage on element 1 will be read out.
3. In the same manner, send the "MEASURE:NORMAL:ITEM:A:ELEMENT1 ON" and " MEASURE:NORMAL:ITEM:W:ELEMENT1 ON" commands to turn ON the current value (A) and power value (W) output from element 1.
4. Now if you send "MEASURE:NORMAL:VALUE?" and read out the measured data, 3 data are output as shown in the following example.
  Example Output: 4.083E+00,50.002E+00,202.65E+00
  - WT110E/WT130 Digital Power Meter User's Manual Page App2-24
  - WT200 Digital Power Meter User's Manual Page 14-29
  - WT210/230M Digital Power Meter User's Manual Page 14-32
  Looking at "Output Format for Normal Measured Data," you can see the following: 1. V1 -> V2 -> V3 -> VΣ 2. A1 -> A2 -> A3 -> AΣ 3. W1 -> W2 -> W3 -> WΣ ... 19. MATH
  This indicates the order in which data was output. In this case, element 1's V, A, and W values are set for output, so V1, A1, and W1 are output in the order V1 > A1 > W1. Going back to the output examples, the first data (4.083E+00) is V1, the next data (50.002E+00) is A1, and the last data (202.65E+00) is W1.
(Supplement)
In the "MEASURE:NORMAL:ITEM:PRESET XXX" communications command which was sent first, NORMAL and INTEGRATE are available in addition to CLEAR, so you can output only the specified items of the measured values. Also, for example, if you want to output the VA item in addition to "NORMAL," you can send "MEASURE:NORMAL:ITEM:PRESET NORMAL", then send "MEASURE:ITEM:VA:ELEMENT1 ON" to add it to the NORMAL item. On the other hand, if you want to remove W on element 1 from the "NORMAL" setting item, you can send "MEASURE:NORMAL:ITEM:PRESET NORMAL", then send "MEASURE:ITEM:W:ELEMENT1 OFF." In this way you can specify individual items for output by adding output items to or taking output items away from the CLEAR, NORMAL, and INTEGRATE preset settings.

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6. For the PZ4000
I was able to read out specific items using the procedure in A1 and A2. However, if data is read out from the measuring instrument repeatedly then the same data is read over and over until it is updated. Is there a way to make it so that it only reads out when the data is updated?

You can use the "STATUS:ESSR?" command to access the extended event register and determine whether the data was updated.
You can judge the data update status by referencing bit 1 (DAV) of this register.

However to do so, you must use the status register and transition filter in addition to the extended event register.

The status register (also called the condition register) is a 16-bit register providing information about the instrument. Its 1st bit is set to 0 between calculation and updating of measured data, and is set to 1 when data updating is complete.
The update period is the timing in which value switches from 0 to 1.

Changes in each bit of the transition filter and status register are detected and the results are stored in the extended event register.

The transition filter is set so that when data is updated (bit 1 of the status register changes from 0 to 1) bit 1 of the extended event register is set to 1.
Send the "STATUS:FILTER2 RISE" communications command, and set FILTER2 (the filter corresponding to bit 1 of the status register) so that when bit 1 of the status register "RISES" from 0 to 1, bit 1 of the extended event register is set.
Bit 1 is the status register's data update bit, but the filter uses bit 2.
Note that the filter's bits are numbered starting from 1 instead of 0.

This setting makes it so that bit 1 of the value returned by the "STATUS:EESR?" command is set to 1 every time the measured value is updated.
"STATUS:EESR?" is what is reset, and only when the value of this register is read out.
Therefore, even if you suddenly read the extended event register and determine that bit 1 is set to 1, this does not indicate at what time the update occurred.
Therefore, send a dummy "STATUS:EESR?" command, and clear the contents of the extended event register.
Then issue repeated "STATUS:EESR?" commands, confirm the changing of the returned value's bit 1 to 1. Then if you send the "NUMERIC:NORMAL:VALUE?" command, the data is not read out until it is updated.

For information on the extended event register, status register, and transition register, see the following:

PZ4000 Power Analyzer Communications Interface User's Manual
Page 5-4

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7. For Instruments Other Than the PZ4000 When Using Pre-IEEE488.2 Command Types
I was able to read out specific items using the procedure in A1 and A2. However, if data is read out from the measuring instrument repeatedly then the same data is read over and over until it is updated. Is there a way to make it so that it only reads out when the data is updated?

You can determine whether data was updated by performing a serial poll and referencing the status byte.

Bit 0 of the status byte (D101) changes to 1 when data is updated.
When bit 0 changes to 1, bit 6 (D107) also changes to 1.
Also, bit 0 and 6 are reset when a serial poll is performed.
You can judge the data update status by referencing bit 0 and bit 6.

However, even if you suddenly read the status byte and determine that bit 0 and bit 6 are set to 1, this does not indicate at what time the update occurred.
Therefore, perform a dummy serial poll, and clear the contents of the extended event register.
Then perform repeated serial polls, and confirm the changing of the returned value's bit 0 and bit 6 to 1. Then if you send the "OD" command, the data is not read out until updated.

For details on the status byte, see the following:

WT1010 Digital Power Meter User's Manual
Page App1-13
WT1030/1030M Digital Power Meter User's Manual
Page App1-15
WT2010 Digital Power Meter User's Manual
Page App1-17
WT2030 Digital Power Meter User's Manual
Page App1-17
WT110E/WT130 Digital Power Meter User's Manual
Page 11-3
WT200 Digital Power Meter User's Manual
Page 10-4
WT210/230M Digital Power Meter User's Manual
Page 10-4

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8. For Instruments Other Than the PZ4000 When Using IEEE488.2 Command TypesM
I was able to read out specific items using the procedure in A1 and A2. However, if data is read out from the measuring instrument repeatedly then the same data is read over and over until it is updated. Is there a way to make it so that it only reads out when the data is updated?

You can use the "STATUS:ESSR?" command to access the extended event register and determine whether the data was updated.
You can judge the data update status by referencing bit 0 (UPD) of this register.

However to do so, you must use the status register and transition filter in addition to the extended event register.

The status register (also called the condition register) is a 16-bit register providing information about the instrument. Bit 0 of this register is set to 1 during measurement and is set to 0 when data updating is complete.
The update period is the timing in which value switches from 1 to 0.

Changes in each bit of the transition filter and status register are detected and the results are stored in the extended event register.

The transition filter is set so that when data is updated (bit 0 of the status register changes from 1 to 0) bit 0 of the extended event register is set to 1.
Send the "STATUS:FILTER1 FALL" communications command, and set FILTER1 (the filter corresponding to bit 0 of the status register) so that when bit 0 of the status register "FALLS" from 1 to 0, bit 0 of the extended event register is set.
Bit 0 of the bottom-most bit is the status register's data update bit, but the filter uses bit 1.
Note that the filter's bits are numbered starting from 1 instead of 0.

This setting makes it so that bit 0 of the value returned by the "STATUS:EESR?" command is set to 1 every time the measured value is updated.
"STATUS:EESR?" is what is reset, and only when the value of this register is read out.
Therefore, even if you suddenly read the extended event register and determine that bit 0 is set to 1, this does not indicate at what time the update occurred.
Therefore, send a dummy "STATUS:EESR?" command, and clear the contents of the extended event register.
Then issue repeated "STATUS:EESR?" commands, and confirm the changing of the returned value's bit 0 to 1. Then, data is not read out until updated

For information on the extended event register, status register, and transition register, see the following:

WT1600 Digital Power Analyzer Communications Interface User's Manual
Page 5-4
WT1010 Digital Power Meter User's Manual
Page App2-47
WT1030/1030M Digital Power Meter User's Manual
Page App2-51
WT2010 Digital Power Meter User's Manual
Page App2-58
WT2030 Digital Power Meter User's Manual
Page App2-59
WT110E/WT130 Digital Power Meter User's Manual
Page App2-38
WT200 Digital Power Meter User's Manual
Page 14-44
WT210/230M Digital Power Meter User's Manual
Page 14-47

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9. For the PZ4000 and WT1600
How can I update the range on the measuring instrument using communications?

There are both voltage and current ranges.
For example, to change the voltage range on element 1 to 30 V, send the "INPUT:VOLTAGE:RANGE:ELEMENT1 30V" command to the measuring instrument.
For example, to change the current range on element 1 to the 1 A range, send the "INPUT:CURRENT:RANGE:ELEMENT1 1A" command to the measuring instrument.

PZ4000 Power Analyzer Communications Interface User's Manual
Pages 4-48 and 4-52
WT1600 Digital Power Analyzer Communications Interface User's Manual
Pages 4-49 and 4-53

* After entering settings, confirm the settings by sending the following commands:
To query the voltage on element 1: "INPUT:VOLTAGE:RANGE:ELEMENT1?"
To query the current on element 1: "INPUT:CURRENT:RANGE:ELEMENT1?"

(Supplement)
To set/query the ranges on all elements at once, use the following commands:

Voltage global setting
"INPUT:VOLTAGE:RANGE 30V"

Voltage global query
"INPUT:VOLTAGE:RANGE?"

Current global setting
"INPUT:CURRENT:RANGE 1A"

Current global query
"INPUT:CURRENT:RANGE?

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10. For WT1000/2000 Series Instruments When Using Pre-IEEE488.2 Command Types
How can I update the range on the measuring instrument using communications?

There are both voltage and current ranges.
For example, to change the voltage range on element 1 to the 30 V range, send the "RV1,4" command to the measuring instrument.
For example, to change the current range on element 1 to the 1 A range, send the "RA1,5" command to the measuring instrument.

WT1010 Digital Power Meter User's Manual
Page App1-11
WT1030/WT1030M Digital Power Meter User's Manual
Page App1-13
WT2010 Digital Power Meter User's Manual
Pages App1-14 and App1-15
WT2030 Digital Power Meter User's Manual
Page App1-15

(Supplement)
To set the ranges on all elements at once, use the following commands:

Voltage global setting
"RV0,4"

Current global setting
"RA0,5"

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11. For WT1000/2000 Series Instruments When Using IEEE488.2 Command Types
How can I update the range on the measuring instrument using communications?

There are both voltage and current ranges.
For example, to change the voltage range on element 1 to 30 V, send the "CONFIGURE:VOLTAGE:RANGE:ELEMENT1 30V" command to the measuring instrument.
For example, to change the current range on element 1 to the 1 A range, send the "CONFIGURE:CURRENT:RANGE:ELEMENT1 1A" command to the measuring instrument.

WT1010 Digital Power Meter User's Manual
Pages App2-20 and App2-22
WT1030/WT1030M Digital Power Meter User's Manual
Pages App2-20 and App2-22
WT2010 Digital Power Meter User's Manual
Pages App2-21 and App2-23
WT2030 Digital Power Meter User's Manual
Pages App2-21 and App2-23

(Supplement)
To set/query the ranges on all elements at once, use the following commands:

Voltage global setting
"CONFIGURE:VOLTAGE:RANGE 30V"

Voltage global query
"CONFIGURE:VOLTAGE:RANGE?"

Current global setting
"CONFIGURE:CURRENT:RANGE 1A"

Current global query
"CONFIGURE:CURRENT:RANGE?"

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12. For WT100/200 Series Instruments When Using Pre-IEEE488.2 Command Types
How can I update the range on the measuring instrument using communications?

There are both voltage and current ranges.
For example, to change the voltage range on element 1 to 30 V, send the "CONFIGURE:VOLTAGE:RANGE 30V" command to the measuring instrument.
For example, to change the current range on element 1 to the 1 A range, send the "CONFIGURE:CURRENT:RANGE 1A" command to the measuring instrument.

WT110E/WT130 Digital Power Meter User's Manual
Pages App2-15 and App2-16
WT200 Digital Power Meter User's Manual
Pages 14-19 and 14-20
WT210/230M Digital Power Meter User's Manual
Pages 14-20 and 14-21

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13. For WT100/200 Series Instruments When Using IEEE488.2 Command Types
How can I update the range on the measuring instrument using communications?

There are both voltage and current ranges.
For example, to change the voltage range on element 1 to the 30 V range, send the "RV4" command to the measuring instrument.
For example, to change the current range on element 1 to the 1 A range, send the "RA5" command to the measuring instrument.

WT110E/WT130 Digital Power Meter User's Manual
Page App1-8
WT200 Digital Power Meter User's Manual
Pages 13-9 and 13-10
WT210/230M Digital Power Meter User's Manual
Pages 13-11 and 13-12

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·	Communications for WT series and PZ4000