The :SENSe{1-16}:ISEGMent{1-50} subsystem commands are used to configure the indicated index-based segment. To configure only the active index-based segment, use:
On the indicated channel, sets the sweep averaging count in the indicated index-based segment. On the indicated channel, outputs the sweep averaging count in the indicated index-based segment.
On the indicated channel sets the IF bandwidth in the indicated index-based segment. Outputs the IF bandwidth in the indicated index-based segment. The system will automatically select the closest IF bandwidth from the following options:
On the indicated channel, sets the CW mode on/off state in the indicated index-based segment. Outputs the CW mode on/off state in the indicated index-based segment.
The command, on the indicated channel, sets the start frequency in the indicated index-based segment. The query outputs the start frequency in the indicated index-based segment. The Minimum Instrument Frequency (Fmin) depends on the instrument installed options. The Maximum Instrument Frequency (Fmax) depends on the instrument model. See Minimum/Maximum Instrument Frequency and Related Parameters for frequency limits for combinations of instrument model and available options. The Minimum Frequency Step Size is equal to 1 Hz.
Cmd Parameters
<NRf> The input parameter is in Hertz.
Query Parameters
<NR3> The output parameter is in Hertz.
Range
Minimum Instrument Frequency to Maximum Instrument Frequency
Step Size = 0 Hz to Maximum Instrument Frequency
Default Value
7.00000000000E+004
Syntax Example
:SENS1:ISEGM1:FREQ:FSTA 5.0E9
:SENS1:ISEGM1:FREQ:FSTA?
:SENSe{1-16}:ISEGMent{1-50}:FREQuency:FSTEp <NRf>
:SENSe{1-16}:ISEGMent{1-50}:FREQuency:FSTEp?
Description
On the indicated channel, sets the frequency step size in the indicated index-based segment. The query outputs the frequency step size in the indicated index-based segment. The Minimum Instrument Frequency (Fmin) depends on the instrument installed options. The Maximum Instrument Frequency (Fmax) depends on the instrument model. See Minimum/Maximum Instrument Frequency and Related Parameters for frequency limits for combinations of instrument model and available options. The Minimum Frequency Step Size is equal to 1 Hz.
Cmd Parameters
<NRf> The input parameter is in Hertz.
Query Parameters
<NR3> The output parameter is in Hertz.
Range
Minimum Frequency Step Size to (Maximum Instrument Frequency minus Minimum Instrument Frequency)
Default Value
7.14280714286E+008
Syntax Example
:SENS1:ISEGM1:FREQ:FSTE 1.00E4
:SENS1:ISEGM1:FREQ:FSTE?
:SENSe{1-16}:ISEGMent{1-50}:FREQuency:FSTOp <NRf>
:SENSe{1-16}:ISEGMent{1-50}:FREQuency:FSTOp?
Description
On the indicated channel, sets the stop frequency in the indicated index-based segment. Outputs the stop frequency in the indicated index-based segment. The Minimum Instrument Frequency (Fmin) depends on the instrument installed options. The Maximum Instrument Frequency (Fmax) depends on the instrument model. See Minimum/Maximum Instrument Frequency and Related Parameters for frequency limits for combinations of instrument model and available options. The Minimum Frequency Step Size is equal to 1 Hz.
Cmd Parameters
<NRf> The input parameter is in Hertz.
Query Parameters
<NR3> The output parameter is in Hertz.
Range
Range = Minimum Instrument Frequency to Maximum Instrument Frequency. Step Size = 0 Hz to Maximum Instrument Frequency.
On the indicated channel, sets the start frequency in the indicated index-based segment. On the indicated channel, outputs the start frequency in the indicated index-based segment. The Minimum Instrument Frequency (Fmin) depends on the instrument installed options. The Maximum Instrument Frequency (Fmax) depends on the instrument model. See Minimum/Maximum Instrument Frequency and Related Parameters for frequency limits for combinations of instrument model and available options. The Minimum Frequency Step Size is equal to 1 Hz.
Cmd Parameters
<NRf> The input parameter is in Hertz.
Query Parameters
<NR3> The output parameter is in Hertz.
Range
Minimum Instrument Frequency to Maximum Instrument Frequency
The command sets the greater than 54 GHz power level of the indicated index-based segment being defined on the indicated port and channel. The use of this command requires a MS4647A VNA equipped with Option 080/081. The query outputs the greater than 54 GHz power level of the indicated index-based segment being defined on the indicated port and channel.
Cmd Parameters
<NRf> The input parameter is in dBm.
Query Parameters
NA
Output
<NR3> The output parameter is in dBm.
Range
–60 to +30 dBm
Default Value
The default value depends on model and installed options:
• MS4647A with Option 051, 061, or 062 = –10 dBm
• MS4647A without Option 051, 061, or 062 = –3 dBm
For the indicated channel and port, sets the power level in dBm for the indicated index-based segment.
Cmd Parameters
<NRf> The input parameter is in dBm.
Query Parameters
<NR3> The output parameter is in dBm.
Range
–30 to +30
Default Value
Default value depends on model and installed options:
• MS4645A and MS4647A with Options 051, 061, or 062 = – 10 dBm
• All other MS4645A and MS4647A models = –3 dBm
• MS4642A and MS4644A = +5 dBm
Syntax Example
:SENS1:ISEGM1:POW:PORT1 3.3E0
:SENS1:ISEGM1:POW:PORT1?
:SENSe{1-16}:ISEGMent{1-50}:SPAntype <char1>
:SENSe{1-16}:ISEGMent{1-50}:SPAntype?
Description
Sets the span type of the indicated index-based segment on the indicated channel. Outputs the span type of the indicated index-based segment on the indicated channel.
STARTSTOP Selected
If STARTSTOP is selected, each segment is defined by the:
• Segment Start Frequency
• Segment Stop Frequency
• Number of Segment Points
STARTSTEP Selected
If STARTSTEP is selected, each segment is defined by the:
• Start Segment Frequency
• Frequency Step Size
• Number of Segment Points
Cmd Parameters
<char1> STARTSTOP | STARTSTEP
Query Parameters
<char1> STARTSTOP | STARTSTEP
Range
NA
Default Value
STARTSTOP
Syntax Example
:SENS1:ISEGM1:SPA STARTSTOP
:SENS1:ISEGM1:SPA?
:SENSe{1-16}:ISEGMent{1-50}:SWEep:POINt <NR1>
:SENSe{1-16}:ISEGMent{1-50}:SWEep:POINt?
Description
Sets the number of sweep points in the indicated index-based segment on the indicated channel. Outputs the number of sweep points in the indicated index-based segment on the indicated channel. The Maximum Instrument Points (MIP) is either 25,000 or 100,000 points depending on the current MIP setting. The MIP setting is available from the front panel user interface at:
• MAIN | System | SYSTEM | Setup | SETUP | Max Points Setup | MAX POINTS
If the setting is changed from its current setting, a full instrument reboot is required.
Cmd Parameters
<NR1> The input parameter is an integer.
Query Parameters
<NR1> The output parameter is an integer.
Range
1 to maximum number of instrument points depending on CW mode. The maximum number of instrument points is either 25,000 or 100,000 points depending on the maximum points setting.
Default Value
15
Syntax Example
:SENS1:ISEGM1:SWE:POIN 1.01E2
:SENS1:ISEGM1:SWE:POIN?
:SENSe{1-16}:ISEGMent{1-50}[:STATe] <char1>
:SENSe{1-16}:ISEGMent{1-50}[:STATe]?
Description
Turns the indicated index-based segment on/off on the indicated channel. Outputs the indicated index-based segment on/off state on the indicated channel.