2500A Chapter 3: Remote Operation
80
2500A Series Operation Manual, 34172 Revision C, March 2008
[SOURce]:FM:STATe?
Queries the frequency modulation mode. The return value is as
follows:
1 FM mode is currently on.
0 FM mode is currently off.
[SOURce]:PULM:EXTernal:POLarity
NORMal|INVerted
Determines the polarity of the signal at the PULSE IN connector
that produces an RF output during pulse modulation. The choices
are as follows:
NORMal RF at the RF OUT connector will be on when the signal
at the PULSE IN connector is at a TTL high.
INVerted RF at the RF OUT connector will be on when the signal
at the PULSE IN connector is at a TTL low.
[SOURce]:PULM:EXTernal:
POLarity?
Queries the pulse modulation polarity. Returns either "NORMal"
or "INVerted".
[SOURce]:PULM:SOURce
EXTernal:INTernal
Set the pulse modulation source. The choices are as follows:
INTernal Sets the internal PM generator as the PM source.
EXTernal Selects external PM. The modulation source in this case
is the signal applied at the rear-panel PULSE IN
connector.
[SOURce]:PULM:SOURce?
Queries the source of pulse modulation. Returns: either
"INTernal", or "EXTernal".
[SOURCe:]PULM:STATe ON|OFF|1|0
Sets the pulse modulation mode on or off. The choices are as
follows:
1|ON
Sets Pulse mode to on.
0|OFF Sets Pulse mode to off.
[SOURce]:PULSe:DELay <pm_delay>
(S|MS|US)
Sets the delay of the internal pulse modulation generator waveform
to the value specified by <pm_delay> (Not available with Option
17A or 17B).
[SOURce]:PULSe:DELay?
Queries the delay of the internal pulse modulation generator
waveform (Not available with Option 17A or 17B). The return
value is in seconds.
[SOURce]:PULSe:FREQuency <pm_freq>
[HZ | KHZ | MHZ | GHZ]
Sets the internal pulse modulation rate to the value specified by
<pm_freq> (Not available with Option 17A or 17B). Hertz is
assumed if no units is supplied.
[SOURce]:PULSe:FREQuency?
Queries the internal pulse modulation rate (Not available with
Option 17A or 17B). The return value is in Hertz.
[SOURce]:PULSe:MODE OFF |
TRIGgered | CONTinuous | GATEd
Sets the internal pulse modulation mode (Not available with Option
17A or 17B). The choices are as follows:
OFF
Turns internal pulse modulation mode off.
TRIGgered
Sets the instrument to produce a single internally
generated RF output pulse when a valid trigger
signal is received at the PM TRIG IN connector.
CONTinuous Sets the instrument to produce an internally
generated pulse modulated RF output signal
continuously.
GATEd
Sets the instrument to produce an internally
generated pulse modulated RF output signal for the
duration of the externally provided gate signal at the
PM TRIG IN connector.
Table 3-12: Source Subsystem - Modulation SCPI Commands
Command Syntax
Description
Summary of Contents for 2508A
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Page 88: ...2500A Chapter 3 Remote Operation 88 2500A Series Operation Manual 34172 Revision C March 2008 ...