Program Comments; Reference Oscillator Sources; Output Load Comments; Output Units Comments - HP E1340A User Manual

Program Comments

Reference
Oscillator Sources
Output Load
Comments
Output Units
Comments
Chapter 2
The following comments give additional details on the program examples in
this chapter.
The ,
SINusoid SQUare
of the Reference Oscillator Sources. The sources, selected by
[SOURce:]ROSCillator:SOURce
INTernal - 42.94967296 MHz (power-on value)
- User provided value (the front panel " Aux In" BNC)
EXTernal
If using the EXTernal
frequency to the AFG using
[SOURce:]ROSCillator:FREQuency:EXTernal <
For correct output amplitude values, the load applied to the AFG
" Signal Output" terminals must be the same value as the selected
AFG output impedance value.
To output to an open circuit, execute
. The HP E1340A then outputs the correct amplitude and
9.9E+37
offset for an open circuit. The amplitude and offset range are
doubled while resolution worsens by a factor of 2.
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 (i.e.,
the default unit type remains in effect for subsequent amplitude
commands that are sent without the unit suffix.
The (volts) suffix and
V
amplitude values for all time varying waveforms like
,
SQUare TRIangle
The default unit type only applies for amplitudes and not for offsets.
The unit for offsets must always be specified in "
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
Generating Standard Waveforms with the HP E1340A
, , and
TRIangle RAMP
, are:
reference oscillator source, enter the source
OUTPut:LOAD INFinity
V ) for that command. However,
(volts peak) suffix generate the same
VPK
, and .
RAMPS
or
functions can use any
frequency .
>
or
SINusoid ,
" for volts. For
V
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