VNA Master™Programming Manual : VNA Commands : :Display Subsystem
 
:Display Subsystem
This subsystem provides commands that modify the display of data for the user. They do not modify the way in which data are returned to the controller.
Trace Display
:DISPlay[:WINDow]:TRACe TRACe|MEMory|BOTH
Description
Sets the display type for the current active trace. Setting the display type to TRAC displays the trace only. Setting the display type to MEM displays the trace memory only. Setting the display type to BOTH displays both the trace and memory.
Syntax
:DISPlay[:WINDow]:TRACe TRACe|MEMory|BOTH
:DISPlay[:WINDow]:TRACe?
Cmd Parameter
<char> TRACe|MEMory|BOTH
Query Response
<char> TRAC|MEM|BOTH
Default Value
TRAC
Front Panel Access
Shift 5 (Trace), Display
Trace Format
:DISPlay[:WINDow]:TRACe:FORMat
Description
Defines the display trace format. The query version of this command returns “SING” if the trace format is set to Single, “DUAL” if set to dual, “TRI” if set to Tri, and “QUAD” if set to Quad.
Syntax
:DISPlay[:WINDow]:TRACe:FORMat SINGle|DUAL|TRI|QUAD
:DISPlay[:WINDow]:TRACe:FORMat?
Cmd Parameter
<char> SINGle|DUAL|TRI|QUAD
Query Response
<char> SING|DUAL|TRI|QUAD
Default Value
QUAD
Example
To set the display trace format to Dual:
:DISPlay:TRACe:FORMat DUAL
Front Panel Access
Measure, Trace Format
 
Group Delay Aperture
:DISPlay:WINDow:TRACe:Y[:SCALe]:GDAPerture
Description
Sets the Group Delay aperture value (which is common to all traces). The query version of this command produces the Group Delay aperture as its output.
Syntax
:DISPlay:WINDow:TRACe:Y[:SCALe]:GDAPerture <integer>
:DISPlay:WINDow:TRACe:Y[:SCALe]:GDAPerture?
Cmd Parameter
<NR1> <integer>
Query Response
<NR1> <integer>
Range
2 to 20
Default Value
2
Front Panel Access
Scale, Aperture
Note 
Graph type must be Group Delay in order to display the Aperture % soft key in the Scale menu.
 
Scale Resolution Per Division
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:PDIVision
Description
Sets the scale per division for the y‑axis. For Group Delay, sets the scale (time/division) for the y‑axis. For Phase, sets the scale (degree/division) for the y‑axis. For Log Magnitude, Log Mag/2, and Log Polar, sets the scale (dB/division) for the y‑axis. For Real Impedance and Imaginary Impedance, sets the scale (ohm/division) for the y‑axis. For all other measurements, the y‑axis is unitless. <Tr> is the trace number in the range 1 to 4. If no trace number is specified, then the <Tr> parameter defaults to trace number 1.
Syntax
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:PDIVision <value>
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:PDIVision?
Cmd Parameter
<NRf> <value> (depends on display type)
Query Response
<NR3> <value> (depends on display type)
Range
Log Magnitude: 0.05 dB to 40 dB
Phase: 0.1 ° to 90 °
SWR: 0.001 to 10
Group Delay: 1 ps to 260 ns
Real: 0.01 to 260
Imag: 0.01 to 260
Log Mag / 2: 0.05 dB to 40 dB
Smith Chart: 1 to 260
Inverted Smith Chart: 1 to 260
Log Polar: 0.05 dB to 40 dB
Linear Polar: 0.001 to 26
Real Impedance: 0.01 ohm to 100000 ohm
Imaginary Impedance: 0.01 ohm to 100000 ohm
Default Value
Log Magnitude: 10 dB
Phase: 45 °
SWR: 1
Group Delay: 1 ns
Real: 0.2
Imag: 0.2
Log Mag / 2: 10 dB
Smith Chart: 10
Inverted Smith Chart: 10
Log Polar: 10 dB
Linear Polar: 0.2
Real Impedance: 10 ohm
Imaginary Impedance: 10 ohm
Scale Resolution Per Division (continued)
Default Unit
Current active value unit (For time, the default for setting is seconds, but the query is always returned in nanoseconds (ns).)
Note 
Although these values are not used for Smith Chart or Inverted Smith Chart, when you query or set through SCPI, the instrument always returns a value. For Smith Chart or Inverted Smith Chart, use
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:SMCHart 0|10|20|30|– 3
Front Panel Access
Scale, Resolution Per Div
Scale Reference Level
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RLEVel
Description
Sets the reference level scale value for the y‑axis. <Tr> is the trace number in the range 1 to 4. If no trace number is specified, then the <Tr> parameter defaults to trace number 1.
Syntax
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RLEVel <value>
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RLEVel?
Cmd Parameter
<NR3> <value> (depends on display type)
Query Response
<NR3> <value> (depends on display type)
Range
Log Magnitude: – 120 dB to + 120 dB
SWR: 1 to 10
Phase: – 180 ° to + 180 °
Group Delay: 0 ps to 260 ns
Real: – 10000 to + 10000
Imag: – 10000 to + 10000
Log Mag / 2: – 120 dB to + 120 dB
Smith Chart: 1 to 260
Inverted Smith Chart: 1 to 260
Log Polar: – 120 dB to + 120 dB
Linear Polar: 0.005 to 130
Real Impedance: – 100000 ohm to + 1000000 ohm
Imaginary Impedance: – 100000 ohm to + 1000000 ohm
Note 
Although these values are not used for Smith Chart or Inverted Smith Chart, when you query or set through SCPI, the instrument always returns a value. For Smith Chart or Inverted Smith Chart, use
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:SMCHart 0|10|20|30|– 3
Scale Reference Level (continued)
Default Value
Log Magnitude: 0 dB
SWR: 1
Phase: 0 °
Group Delay: 0 ps
Real: 0
Imag: 0
Log Mag / 2: 0 dB
Smith Chart: 10
Inverted Smith Chart: 10
Log Polar: 0 dB
Linear Polar: 1
Real Impedance: 50 ohm
Imaginary Impedance: 0 ohm
Default Unit
Current active value unit (For time, the default for setting is seconds, but the query is always returned in nanoseconds (ns).)
Related Command
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RPOSition
Front Panel Access
Scale, Reference Value
 
Scale Reference Line
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RPOSition
Description
Sets the reference line scale value for the y‑axis.
Syntax
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RPOSition <integer>
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RPOSition?
Cmd Parameter
<NR1> <integer>
Query Response
<NR1> <integer>
Range
Log Magnitude: 0 to 10
SWR: 0 to 10
Phase: 0 to 8
Group Delay: 0 to 10
Real: 0 to 10
Imag: 0 to 10
Log Mag / 2: 0 to 10
Smith Chart: 0 to 10
Inverted Smith Chart: 0 to 10
Real Impedance: 0 ohm to 10 ohm
Imaginary Impedance: 0 ohm to 10 ohm
Note 
Although this command is not used for Smith Chart, Inverted Smith Chart, or Polar Chart when you query or set through SCPI, the instrument always returns a value. For Smith Chart or Inverted Smith Chart, use
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:SMCHart 0|10|20|30|– 3
Default Value
Log Magnitude: 9
SWR: 1
Phase:  5
Group Delay: 5
Real: 5
Imag: 5
Log Mag / 2: 9
Smith Chart: 10
Inverted Smith Chart: 10
Real Impedance: 5 ohm
Imaginary Impedance: 5 ohm
Related Command
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:RLEVel
Front Panel Access
Scale, Reference Line
Smith Chart Scalable Type
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:SMCHart
Description
Sets the Smith Chart or Inverted Smith Chart display scale type of the given trace number specified by <Tr>. <Tr> is the trace number in the range 1 to 4. If no trace number is specified, then the <Tr> parameter defaults to trace number 1. Setting the value to 0 is equivalent to setting the Smith Chart or Inverted Smith Chart scale to “Normal” on the front panel. Setting the value to 10 is equivalent to setting the Smith Chart or Inverted Smith Chart scale to “Expand 10 dB” on the front panel. Setting the value to 20 is equivalent to setting the Smith Chart or Inverted Smith Chart scale to “Expand 20 dB” on the front panel. Setting the value to 30 is equivalent to setting the Smith Chart or Inverted Smith Chart scale to “Expand 30 dB” on the front panel. Setting the value to – 3 is equivalent to setting the Smith Chart or Inverted Smith Chart scale to “Compress 3 dB” on the front panel.
Syntax
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:SMCHart 0|10|20|30|‑3
:DISPlay:WINDow:TRACe<Tr>:Y[:SCALe]:SMCHart?
Cmd Parameter
<char> 0|10|20|30|‑3
Query Response
<char> 0|10|20|30|‑3
Default Value
0 (Normal)
Front Panel Access
Scale