User`s manual

Output Units

Comments

• The selected unit type can be overridden by sending a unit suffix

with the amplitude command. For example, if the selected unit is

VPP, sending:

[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude] 5V

changes the unit type to volts (that is, V) for that command.

However, the default unit type remains in effect for subsequent

amplitude commands that are sent without the unit suffix.

• The V (volts) suffix and VPK (volts peak) suffix generate the same

amplitude values for all time varying waveforms like SINusoid,

SQUare, TRIangle, and RAMPS.

• The default unit type only applies for amplitudes and not for offsets.

The unit for offsets is always specified in V for volts. For example,

executing:

[SOURce:]VOLTage:OFFSet .1VPP

causes an error. To prevent the error, execute either:

[SOURce:]VOLTage:OFFSet 0.1

[SOURce]:VOLTage:OFFSet 0.1V

• The W, DBM, and DBMW unit types references the amplitude levels

to the 50 Ω or 75 Ω output load values (set by the

OUTPut[1]:LOAD

command). Thus, the W, DBM, and DBMW values are meaningless

and not available when selecting an open circuit load.

Selecting the

Deviation Units for

Phase Modulation

Use either degrees or radians to change the phase in the phase modulation

function. There are two ways to select the units, either send the unit type

with the deviation command, like:

[SOURce:]PM:DEViation -90DEG

or select the unit type with the unit command like:

[SOURce:]PM:UNIT:ANGLe DEG or [SOURce:]PM:DEViation -90

80 Generating Standard Waveforms Chapter 2