Manual
40
Model 835-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
(defa
ult)
[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
[SO
U
Rce
]:P
U
LM:
M
OD
E
FIXed |
LIST FIXed
.:PULM:PO
L
ar
ity
[SOURce]:PULM:POLarity
NORMal|INVerted
[SOURce
]:P
U
LM:P
OLarity
?
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
<frequen
c
y>
.
*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:INTern
al: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