Metrohm 746 VA Trace Analyzer - Manual (Page 459)

5.7 Program instructions
746 VA Trace Analyzer / 747 VA Stand
5-308
Parameter Range; Default value / Meaning
Delta -1e30...1e30; 0
Step size for the variation
This parameter defines the amount by which the selected parameter
with the name
Param.name is varied. With a positive value of Delta , the
parameter is increased, with a negative value it is decreased.
The step size must be entered for all parameters
in the base units s, V, Hz or °.
The following conditions apply to entry of the step size:
Parameter Unit Delta
min
Meas.cycles Number 1
Modul.freq. Hz 1
Ph.angle ° 1
Prep.cycles Number 1
Rot.speed Number/min 200
t.line s 0.1
t.meas s 0.0001
t.pulse s 0.0001
t.step s 0.00005
U.ampl V 0.001
U.end V 0.001
U.meas V 0.001
U.start V 0.001
U.step V 0.002
Description The VARNI instruction defines the variation of a parameter within a VAR
loop. The parameter of the following instruction specified in Param.name
is increased or decreased after the first execution of the VAR loop by the
amount
Delta .
Comments • The instruction with the parameter to be varied must be entered after
the
VARNI instruction.
• The parameter to be varied is not increased or decreased by the
amount
Delta until the second execution of the VAR loop, in the first
execution the value entered in the parameter of the instruction is
used.
• Several VARNI instructions for different instructions are possible
within a VAR loop. However, it is not advisable to take advantage of
this possibility to change different parameters simultaneously.
• REP loops are allowed within VAR loops, a VAR loop can also be
inserted in a REP loop.
• No ADD or CAL loops are allowed within a VAR loop.
• Within VAR loops, the EXIT instruction can be inserted for a
premature exit from this loop.