HP 81101A Reference Manual page 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
Programming the pulse phase also executes [:SOURce]:PULSe:HOLD
coupling
PHASe so that the pulse phase is held constant when the signal frequency
is changed.
Value coupling
Delay =
*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:
:PHAS 180 DEG
:PULS:DEL:HOLD PRAT
56
Phase
×
Period
360
Set OUTPUT phase to 180°
Hold OUTPUT phase constant with varying
period