Giga-tronics 58542 - Page 65

Operation
Publication 21555, Rev. E, September 2002 2-35
Syntax:
SENSe<sensor 1 or 2>:TRIGger:LEVel[:MAGnitude]space<R In EXT triggering use -0.1 to 5.000 V. In INT
triggering use -30 to +20 dBm>
Example:
OUTPUT @PWR_MTR;SENS1:TRIG:LEV 1.7 ! SETS PEAK SENSOR 1 TRIGGER LEVEL TO1.7 VOLTS
Description:
This command sets the trigger level for the Series 80350A Peak Power Sensors. Under
INTernal triggering the value is in dBm (-30 to +20 dBm, with default of -20 dBm). When
EXTernal triggering is used the value is in Volts (-0.100 to 5.000 V, with a default of 1.700 V).
The trigger level must be lower than the signal that is triggering the peak power sensor. Under
Internal triggering, this means that a -16 dBm signal must be triggered with a setting that is
less than -16 dBm. EXT responds similarly. The input impedance to the EXT trigger port on
the back of the sensor housing is not 50 ohms: it is a high impedance to prevent damage from
triggering inputs such as 5.0 V TTL signals. Using a high speed 50 Ω trigger source, this may
cause unwanted signal reflections and noise on the trigger line. An SMB to SMB attenuator is
available from Giga-tronics to alleviate this condition. The attenuation reduces the reflected
noise, and reduces/eliminates the noisy trigger characteristics.
Be sure to set the trigger level after the INTernal or EXTernal triggering is selected.
Syntax:
SENSe<sensor 1 or 2>:TRIGger:OFFSet[:MAGnitude]
Example:
OUTPUT @PWR_MTR;SENS1:TRIG:OFFS 0 ! SETS PEAK SENSOR 1 TRIGGER OFFSET TIME TO 0
! SECOND
Description:
This command sets the peak power sensor trigger offset time.
Syntax:
SENSe<sensor 1 or 2>:TRIGger:TOTAl[:MAGnitude]?
Example:
OUTPUT @PWR_MTR;SENS1:TRIG:TOTA? ! QUERIES PEAK SENSOR 1 TOTAL TRIGGER DELAY
! TIME
Response:
Current peak power sensor total trigger delay setting; a single value in seconds.
Description:
This query reports the peak power sensor total trigger delay time.