Agilent Technologies 222A Manuel d'instructions Page 68

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68
Programming Reference
SCPI Instrument Command List
Command :PULS:WIDT[1]
Long
[:SOURce]:PULSe:WIDTh[1]
Form Set & Query
Parameter Numeric
Parameter suffix
S
with engineering prefixes
*RST value 100 ns
Specified limits 10 ns to 999.5 s (max. period –10 ns)
Description Use this command to program the width of the pulse signal. If you want
to set width as duty cycle use
[:SOURce]:PULSe:DCYCle[1]
.
If you want the pulse width to remain constant when the pulse period is
varied (rather than the duty cycle) use
[:SOURce]:PULSe:HOLD[1] WIDTh
.
Example To set and hold the pulse width:
Command :ROSC:SOUR
Long
[:SOURce]:ROSCillator:SOURce
Form Set & Query
Parameter
INTernal | EXTernal
*RST value
INT
Description Use this command to set/read the reference source for the PLL. If you
select the external reference (CLK-IN connector), you can choose to use
a 5 MHz or 10 MHz reference signal using
:ROSC:EXT:FREQ
.
:PULS:WIDT 50NS
:PULS:HOLD WIDTH
Set OUTPUT pulse width to 50 ns
Hold pulse width constant with varying period
INTernal
Lock the PLL to its internal reference
EXTernal
Lock the PLL to a reference signal at the
CLK-IN connector. The external refer-
ence signal can be 5 or 10 MHz.
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