R&S FSMR, Руководство по эксплуатации, Страница: 730 / 955

SENSe:SWEep Subsystem R&S FSMR
1313.9723.12 6.1-194 E-1
This command determines the polarity of the external gate signal. The setting is valid both for the
edge of an edge-triggered signal and the level of a level-triggered signal.
This command is not available for GSM/EDGE measurements modulation accuracy
(MAC), phase/frequency error (PFE), power versus time (PVT ), carrier power (CPW),
spectrum due to switching (TRA) and spurious emissions (SPU).
Example:
"SWE:EGAT:POL POS"
Characteristics: *RST value: POSitive
SCPI: device-specific
[SENSe<1|2>:]SWEep:EGATe:SOURce EXTernal | IFPower
This command toggles between external gate signal and IF power signal as a signal source for the
gate mode. If an IF power signal is used, the gate is opened as soon as a signal at > -20 dBm is
detected within the IF path bandwidth (50 MHz).
Selection RFPower is only available with option FSP-B6 (TV and RF Trigger).
This command is not available for GSM/EDGE measurements modulation accuracy
(MAC), phase/frequency error (PFE), power versus time (PVT ), carrier power (CPW),
spectrum due to switching (TRA) and spurious emissions (SPU).
Example:
"SWE:EGAT:SOUR IFP"
'Switches the gate source to IF power.
Characteristics: *RST value: IFPower
SCPI: device-specific
[SENSe<1|2>:]SWEep:EGATe:TYPE LEVel | EDGE
This command sets the type of triggering (level or edge) by the external gate signal.
The gate opening time cannot be defined with the parameter
EGATe:LENGth
in case of level
triggering. The gate is closed when the gate signal disappears.
This command is not available for GSM/EDGE measurements modulation accuracy
(MAC), phase/frequency error (PFE), power versus time (PVT ), carrier power (CPW),
spectrum due to switching (TRA) and spurious emissions (SPU).
Example:
"SWE:EGAT:TYPE EDGE"
Characteristics: *RST value: EDGE
SCPI: device-specific
[SENSe<1|2>:]SWEep:IF:SHIFt:FREQuency <numeric value>
This command defines the signal frequency to automatically select the suitable 1
st IF
shifting for mode
IF SHIFT AUTO (SENS:SWE:IF:SHIFT:MODE AUTO).
The 1
st
IF shifting is automatically done for ACP measurements if center frequency ( =
signal frequency) is in the range of 2270 MHz … 2350 MHz. The IF SHIFT setting is
therefore ignored for ACP measurements.
Example:
"SENS:SWE:IF:MODE AUTO" '
activates IF SHIFT AUTO
"SENS:SWE:IF:SHIF:FREQ 2GHz '
carrier signal at 2 GHz
"
Characteristics: *RST value: 1 GHz
SCPI: device-specific