Agilent Technologies E1441A Manuale Utente
90
Agilent E1441A SCPI Command Reference
Chapter 3
PHASe
Only valid with
Option 001
The PHASe command subsystem is valid only with the Phase-Lock option (option
001). This command allows you to control the phase offset of the output waveform.
You can also enable the phase-lock error reporting to generate an error when
phase-lock is lost (unlocked). See the STATus command for querying the
questionable data registers and status byte to verify the unlock condition.
001). This command allows you to control the phase offset of the output waveform.
You can also enable the phase-lock error reporting to generate an error when
phase-lock is lost (unlocked). See the STATus command for querying the
questionable data registers and status byte to verify the unlock condition.
Subsystem Syntax
PHASe
:ADJust <radians> | <degrees> DEG | MINimum | MAXimum
:ADJust?
:REFerence
:UNLock:ERRor:STATe OFF | ON
:UNLock:ERRor:STATe?
:ADJust?
:REFerence
:UNLock:ERRor:STATe OFF | ON
:UNLock:ERRor:STATe?
:ADJust
PHASe:ADJust <radians>|<degrees>DEG |MIN|MAX
adjusts the phase offset of
the output waveform in radians or in degrees (must specify DEG following the
parameter if specified in degrees). Select from -2
parameter if specified in degrees). Select from -2
π radians to +2π radians. The
default is 0 radians. MIN = -2
π radians; MAX = +2π radians. The phase offset
setting is stored in volatile memory.
Parameters
Comments
•
You must specify "DEG" following the phase value if you specify the phase in
degrees instead of radians. For example, to specify a -90
° phase offset, use the
following command:
PHAS:ADJ -90 DEG
•
For sine, square, triangle, and ramp waveforms:
Zero (0) radians is the point at which the waveform crosses zero volts (or the
dc offset value) in a positive-going direction.
dc offset value) in a positive-going direction.
•
For arbitrary waveforms:
Zero (0) radians is the first point downloaded to memory.
•
The phase adjustment for phase-lock is independent of the burst phase as set by
the
BM:PHAS
command.
See “Burst Modulation” on page 33.
for more
information.
Parameter Name
Parameter Type
Range of Values
Default Units
radians
numeric
-2
π
to +2
π
radians
degrees
numeric
-360
°
to +360
°
must specify
DEG