Sweep
For the sweep systems, a second level of evaluation delay
is
implemented. Sweep parameter conflicts (with 'outer' parameters,
e.g. FUNCtion) are not evaluated (no error is generated) as long as
they are not 'active7.
Sweep parameters are active when they are used in
a
sweep and when
the FREQuency:MODE is set to SWEep or LIST.
In
other words,
a
sweep parameter error (e.g. stopfreq. too high for function) is not
generated until the interval containing the parameter is selected for
sequencing and
FREQ:MODE is set away from CWIFIXed.
This implementation allows a programmer to change the output
function temporarily, without having to re-program dozens of
parameters, if he does not want to sweep this function.
Example
:
Assume a user has set up 50 intervals, all sweeping in the range of
10 to 21 MHz, and he wants to switch the waveform to triangle
temporarily. In a strict approach this is not allowed unless he
reprograms
dl
50 intervals, because the maximum frequency for
output function triangle is
11
kHz.
b
Functional Coupling
[:SOURce]:FREQuency
Setting the frequency through its CW node switches
FREQ:MODE
[:CW]
to
CW.
[:SOURce]:ROSCillator
Setting the reference oscillator source switches
:SOURce
[SOURce]:ROSCillator:AUTO
to OFF.
[:SOURce]:SWEep
Setting the sweep retrace time switches
:TIME:RETRace
[SOURce]:SWEep:TIME:RETRace:AUTO
to OFF.
Understanding
the
HP
E1440A 4-13
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