LCX_UserManual_en_08_1.pdf - 第205页

Remote control commands R&S ® LCX Series 205 User Manual 1 179.2260.02 ─ 08 Example: Querying measurement values The example represents the remote control commands to set the measurement mode, to query the voltage or…

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Remote control commands
R&S
®
LCX Series
204User Manual 1179.2260.02 ─ 08
DISPlay:BRIGhtness <Display Brightness>
Sets the brightness of the display.
Parameters:
<Display Brightness> Range: 0.1 to 1
Increment: 0.1
*RST: 0.8
Example: see Example "Configuring the display brightness and user
defined text messages" on page 203.
Manual operation: See "Display Brightness" on page 134
DISPlay[:WINDow]:TEXT:CLEar
Closes a user defined text message on the display.
To create an own message, use command DISPlay[:WINDow]:TEXT[:DATA]
on page 204.
Example:
see Example "Configuring the display brightness and user
defined text messages" on page 203.
Usage: Event
DISPlay[:WINDow]:TEXT[:DATA] <Message>
Enables you to post a text message on the display.
To close user defined message, use command DISPlay[:WINDow]:TEXT:CLEar
on page 204.
Setting parameters:
<Message> Text message for display.
Example: See Example "Configuring the display brightness and user
defined text messages" on page 203.
Usage: Setting only
11.10 FETCh subsystem
The FETCh subsystem contains the commands for retrieving the readings of the recent
measurement immediately. Especially with triggered measurements, you can clearly
assign the results to the measurement.
FETCh subsystem
Remote control commands
R&S
®
LCX Series
205User Manual 1179.2260.02 ─ 08
Example: Querying measurement values
The example represents the remote control commands to set the measurement mode,
to query the voltage or current values, and the measurement accuracy.
*************************************************
// Query the voltage and current values
// of the next working point
FETCH:VOLTage[:AC]?
// Response: 2 // 2 V
FETCH:CURRent[:AC]?
// Response: 0.1 // 100 mA
FETCH:VOLTage[:DC]?
// Response: 2 // 2 V
FETCH:CURRent[:DC]?
// Response: 0.1 // 100 mA
*************************************************
// Query the magnitude and phase accuracy
FETCH:ACCuracy?
// Response: 2.123, 1.123 // percent, degree
*************************************************
// Query the primary and secondary
// measurement values of a transformer
FETCh:VOLTage:TRANsformer[:PRIMary]?
// Response: 1 // 1 V
FETCh:VOLTage:TRANsformer:SECondary]?
// Response: 2 // 2 V
Example: Acquiring measurement readings
The example represents the remote control commands of the measurement results.
**************************************************
// Request information on the most recent valid
// measurement readings
FETCh:IMPedance?
// Response: returns Z and Theata d
FETCh[:TYPE]? CPD
// Response: returns the valid values of the
// parallel capacitance and the dissipation factor
FETCh[:TYPE]?
// Response: returns the valid values of
// the primary parameter pair
FETCh subsystem
Remote control commands
R&S
®
LCX Series
206User Manual 1179.2260.02 ─ 08
FETCh:ACCuracy?.........................................................................................................206
FETCh:CURRent:DC?....................................................................................................206
FETCh:CURRent[:AC]?.................................................................................................. 206
FETCh:IMPedance?.......................................................................................................207
FETCh:VOLTage:DC?.................................................................................................... 207
FETCh:VOLTage:TRANsformer:SECondary?....................................................................207
FETCh:VOLTage:TRANsformer[:PRIMary]?......................................................................208
FETCh:VOLTage[:AC]?...................................................................................................208
FETCh[:TYPE]?.............................................................................................................208
FETCh:ACCuracy?
Queries the accuracy of the last measurement.
The R&S LCX returns the accuracy of the impedance (δ|Z|) in percent, and the phase
angle (δΘ) in degrees.
If an invalid value is returned, the instrument reports error code -230.
Return values:
<Magnitude Accuracy
Percentage>
Selects the magnitude accuracy.
<Phase Accuracy
Degree>
Selects the phase accurracy.
Example: See Example "Querying measurement values" on page 205.
Usage: Query only
Manual operation: See "<measurement accuracy>" on page 73
FETCh:CURRent:DC?
Applies to DC measurements only.
Queries the DC current measurement value of the last measurment.
If an invalid value is returned, the instrument reports error code -230.
Return values:
<DC Current
Measurement Value>
Default unit: A
Example: See Example "Querying measurement values" on page 205.
Usage: Query only
FETCh:CURRent[:AC]?
Applies to AC measurements.
Queries the AC current measurement value of the last measurement.
If an invalid value is returned, the instrument reports error code -230.
FETCh subsystem