Programming instructions

39
Programming Reference
SCPI Instrument Command List
Command :ARM:EWID
Long
:ARM[:SEQuence[1]|STARt][:LAYer]:EWIDth[:STATe]
Form Set & Query
Parameter
ON | OFF | 1 | 0
*RST value
OFF
Description Use this command to enable the EXT WIDTH trigger mode available on
the M
ODE
/T
RIGGER SCREEN
. When EXT WIDTH mode is switched on, the rest of
the
:ARM
and
:TRIG
system is disabled.
In EXT WIDTH mode a signal applied to the EXT INPUT determines the
width and period of the output signal(s) from the instrument. You can
still control the edge transition times and levels of the output signal(s).
Command :ARM:FREQ
Long
:ARM[:SEQuence[1]|STARt][:LAYer]:FREQuency[:CW][:FIXed]
Form Set & Query
Parameter Numeric
Parameter Suffix
HZ
with engineering prefixes, e.g.:
MHZ
is Megahertz.
*RST value
100 kHz
Specified Limits 1 mHz to 50 MHz
Description Use this command to program the frequency of the PLL (INTernal2)
when it is used as the
:ARM:SOURce
for internal triggering of pulses,
bursts or patterns.
If you are using the PLL as
:TRIGger:SOURce
to set the pulse frequency,
use the
[:SOURce]:FREQuency[:CW|:FIXed]
command.
Example To set up bursts of four 20 MHz pulses occurring at a burst rate of 2 MHz:
:TRIG:SOUR INT
:FREQ 20 MHZ
:ARM:SOUR INT2
:ARM:SENS EDGE
:ARM:FREQ 2 MHZ
:TRIG:COUNT 4
Select internal osc. as pulse period source
Set pulse frequency to 20 MHz
Select PLL as triggering source
Sense edge of PLL signal
Set triggering frequency to 2 MHz
Set burst length to 4