SME SOURce:PULM
1038.6002.02 3.91 E-13
3.6.11.16 SOURce:PULM Subsystem
This subsystem contains the commands to check the pulse modulation and to set the parameters of the
modulation signal. The internal pulse generator (option SM-B4) is set in the SOURce:PULSe
subsystem.
Command Parameter Default
Unit
Remark
[:SOURce]
:PULM
EXTernal
:IMPedance
:INTernal
:FREQuency
:POLarity
:SOURce
:STATe
50 Ohm| 10 kOhm
0.01176 Hz to 10 MHz
NORMal | INVerted
INTernal | EXTernal
ON | OFF
Ohm
Hz
Option SM-B3, SM-B4,
SM-B8, and SM-B9
[:SOURce]:PULM:EXTernal:IMPedance 50 Ohm | 10 kOhm
The command sets the impedance of the input socket for the external pulse generator. The pulse
generator has an own input socket, hence this setting is independent of the corresponding
settings under PM and FM. *RST value is 10 kOhm
Example: :SOUR:PULM:EXT:IMP 10E3
[:SOURce]:PULM:INTernal:FREQuency 0.01176 Hz to 10 MHz
The command sets the frequency of the pulse generator. This parameter is coupled with
SOURce:PULSe:PERiod. *RST value is 100 kHz
Example: :SOUR:PULM:INT:FREQ 1MHz
[:SOURce]:PULM:POLarity NORMal | INVerted
The command specifies the polarity between modulating and modulated signal.
NORMal The RF signal is suppressed during the interpulse period.
INVerted The RF signal is suppressed during the pulse.
Example: :SOUR:PULM:POL INV *RST value is NORMal
[:SOURce]:PULM:SOURce EXTernal | INTernal
The command selects the source of the modulating signal.
INTernal Internal pulse generator (option SM-B4).
EXTernal Signal fed externally *RST value is INTernal
Example: :SOUR:PULM:SOUR INT
[:SOURce]:PULM:STATe ON | OFF
The command switches on or off the pulse modulation. *RST value is OFF
Example: :SOUR:PULM:STAT ON
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