58542 VXIbus Universal Power Meter
2-34
Publication 21555, Rev. E, September 2002
2.5.19
Peak Power Sensor Triggering
■
SENSe:TRIGger
The Peak Power Sensors sample power levels almost instantaneously. Since there is a sampler built into
the Peak Power sensor housing, there are several controls to configure the source of the sensor trigger
signal. These include the delay time from triggering to when the sample is to be taken (Sample Delay),
and the trigger level. All Peak Power Sensors will operate in the SWIFt and BURSt modes when in the
CW measurement mode (SOURce) configuration (not when using INT or EXT trigger).
SENSe:TRIGger
Syntax:
SENSe<sensor 1 or 2>:TRIGger:SOURce
space
<INTernal, EXTernal, or CW>
Example:
OUTPUT @PWR_MTR;SENS1:TRIG:SOUR CW
! SETS SENSOR 1 PEAK TRIGGER MODE TO CW MODE
Description:
This command controls the trigger source for the sensors. Both the Series 80350A respond to
this command. INTernal triggering is performed automatically by the 80350A Sensor;
however, the trigger level must be set to a value of power that is lower than the power level of
the pulsed signal incident upon the sensor. EXTernal triggering is performed by inputting a
baseband pulse into the rear connector on the sensor housing. BNC to SMB cables have
been provided for this purpose. For high speed trigger pulses, SMB to SMA adapters are
available from Giga-tronics. CW triggering sets the power sensors to measure CW power and
triggering is essentially disabled. CW is automatically set by the 58542 during power sweep
calibration; do not apply any triggering to the peak power sensor during power sweep
calibration.
Be sure to set the trigger level, SENS:TRIG:LEV ##.# after the INTernal or EXTernal triggering
is selected.
Syntax:
SENSe<sensor 1 or 2>:TRIGger:DELay[:MAGnitude]:
space
<delay in seconds from -20e-9 to 105e-3>
Example:
OUTPUT @PWR_MTR;SENS1:TRIG:DEL 1E-/6
! SETS SENSOR 2 PEAK DELAY VALUE TO 1E-6
! SECONDS
Description:
The SENS:TRIG:DEL # is the time in seconds between the Series 80350A Peak Power
Sensor’s receipt of a sensor trigger (INT is auto, EXT is a trigger input) and the time that the
sampler is fired. This delay is typically accurate to about 0.5%; repeatability is an order of
magnitude better. There is a delay line built into the peak power sensor. Therefore, measuring
the power on the leading edge of the pulsed signal even if it is the same edge on which the
sensor was triggered. This also allows limited look ahead capability as identified by the
allowed negative time values for this command. The other reason negative time values are
allowed is due to the sample delay offset capability.
Syntax:
SENSe<sensor 1 or 2>:TRIGger:DELay:STATe
space
<ON | OFF>
Example:
OUTPUT @PWR_MTR;SENS1:TRIG:DEL:STAT ON ! ENABLES PEAK SENSOR 1 DELAY FUNCTION
Description:
This command activates the sample delay in the Series 80350A Peak Power Sensors.
Содержание 58542
Страница 3: ...DECLARATION OF CONFORMITY ...
Страница 4: ......
Страница 18: ...58542 VXIbus Universal Power Meter xiv Publication 21555 Rev E September 2002 ...
Страница 20: ...58542 VXIbus Universal Power Meter xvi Publication 21555 Rev E September 2002 ...
Страница 30: ...58452 VXIbus Universal Power Meter 1 10 Publication 21555 Rev E September 2002 ...
Страница 92: ...58542 VXIbus Universal Power Meter 2 62 Publication 21555 Rev E September 2002 ...
Страница 104: ...58452 VXIbus Universal Power Meter 3 12 Publication 21555 Rev E September 2002 ...
Страница 126: ...58452 VXIbus Universal Power Meter 5 8 Publication 21555 Rev E September 2002 ...
Страница 171: ......
Страница 172: ......
Страница 173: ......
Страница 174: ...21360 Rev A has not been u ...
Страница 175: ......
Страница 176: ......
Страница 177: ......
Страница 178: ......
Страница 179: ......
Страница 180: ......
Страница 181: ......
Страница 182: ......
Страница 248: ...58542 VXIbus Universal Power Meter C 2 Publication 21555 Rev E September 2002 ...