-
[:SOURce]:FU
NCtion
Subsystem Syntax
Comments
The
[:SOURce]:FUNCtion command
subsystem
controls
the
shape
and attributes of the HP E1440A output signal.
[:S OURce]
:FUNCtion
[:SHAPe] DC
I
SINusoid
1
SQUare
(
TRIangle
I
RUP IRDOWn
(TTL
The following signal characteristics may be specified using the
:FUNCtion:SHAPe command:
rn
:DC
The value is unchanging with respect to time.
rn
:SINusoid
A
sinusoidal waveform is specified.
rn
:SQUare
A
square wave signal is specified.
rn
:TRIangle
A triangular (sawtooth) waveform is specified.
rn
:RUP
The output signal will have the same frequency and
amplitude as a TRI waveform but it steadily ramps upwards from
zero and returns sharply to zero again.
rn
:RDOWn
The output signal will steadily ramp downwards from
zero, and returns sharply to zero again.
:TTL
The TTL function is somewhat different to all of the output
functions because if FUNC
=
TTL, the main signal is disconnected
(as if OUTP
OFF).
The only active signal output is the SYNC
output. The purpose of FUNC TTL is to supply
a
TTL compatible
signal on the SYNC output that has
a
much larger frequency range
than the "true" output functions
(
1pHz to 6OMHz).
Command
Reference
5-19
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