BNC 845-M - Manual (Page 40)

40
Model 845-M Programmer’s Manual V1.1 2011
[SOURce]:PULM Subsystem (Pulse Modulation)
This additional functionality provides pulse modulation of the RF output signal delivered to the load
by an internal or external modulation signal. The INTernal selection accesses the internally generated
modulation input while EXTernal selects the external pulse (rear panel connector) input.
Command Parameters Unit
(default)
[SOURce]:PULM:POLarity NORMal | INVerted NORMal
[SOURce]:PULM:INTernal:FREQuency <frequency> Hz
[SOURce]:PULM:INTernal:PERiod <period> s
[SOURce]:PULM:INTernal:PWIDth <num> s
[SOURce]:PULM:SOURce INTernal|EXTernal INT
[SOURce]:PULM:STATe ON|OFF|1|0 OFF
[SOURce]:PULM:MODE FIXed | LIST FIXed
.:PULM:POLarity
[SOURce]:PULM:POLarity NORMal|INVerted
[SOURce]:PULM:POLarity?
This command selects the polarity of the pulse modulation, regardless if the internal or external
modulation source is used.
*RST Normal
:PULM:INTernal:FREQuency
[SOURce]:PULM:INTernal:FREQuency <frequency> [SOURce]:PULM:INTernal:FREQuency?
This command sets the pulse rate for the internally- generated square wave using the variable
<frequency>.
*RST 400 Hz
Range INT: 0.1 Hz – 100 kHz, EXT: 0.1 Hz–10 MHz
:PULM:INTernal:PERiod
[SOURce]:PULM:INTernal:PERiod <period>
[SOURce]:PULM:INTernal:PERiod?
This command sets the pulse period for the internally generated pulse modulation using the
variables <value>.
If the entered value for the pulse period is equal to or less than the value for the pulse width, the
pulse width changes to a value that is less than the pulse period.
*RST 2.5 ms
Range 200 ns – 10 s
:PULM:INTernal:PWIDth
[SOURce]:PULM:INTernal:PWIDth <num>
[SOURce]:PULM:INTernal:PWIDth?
This command sets the pulse width for the internally generated pulse signal.
This command sets the pulse width for the internally- generated pulse modulation using the
variable <num>.
If the entered value for the pulse width is equal to or greater than the value for the pulse
period, the pulse width changes to a value that is less than the pulse period.
*RST 1.25 ms
Range 50 nS to PERiod