Programming instructions

56
Programming Reference
SCPI Instrument Command List
Command :PHAS[1]
Long
[:SOURce]:PHASe[1][:ADJust]
Form Set & Query
Parameter Numeric
Parameter suffix
DEG
or
RAD
. A parameter without a suffix is interpreted as
RAD
.
Functional
coupling
Programming the pulse phase also executes
[:SOURce]:PULSe:HOLD
PHASe
so that the pulse phase is held constant when the signal frequency
is changed.
Value coupling
*RST value 0.0
Specified limits 0 to 360
°
constrained by delay and period limits.
Description Use this command to set/read the relative phase delay of the output
signal. This is equivalent to setting an absolute or percentage pulse delay
with
[:SOURce]:PULSe:DELay
.
If you want the phase delay to remain constant when the pulse period is
varied (rather than the absolute pulse delay) use
[:SOURce]:PULSe:DELay[1]:HOLD PRATio
.
Example To set and hold the phase delay:
D
elay =
Phase
360
Period
×
:PHAS 180 DEG
:PULS:DEL:HOLD PRAT
Set OUTPUT phase to 180
°
Hold OUTPUT phase constant with varying
period