Errors - LeCroy WaveRunner Xi series Operator's Manual

W R X S
AVE UNNER I
Note t hat in VBS, after you have corrected an error and clicked on "Apply,"
for a few seconds, or a fe
before assuming that you still have a bug.
If your calculation requires data to be used at some other horizonta
that your algorith m does not try to send data to non-existent a
screen . You may have to truncate your output trace, as happe
Boxcar functions.
No o utput wil l em erge from a script until you press Apply.
No ou tput w ill em erge from a script until it has received an input. This incl
not use d in calcul ating the output data. So you must have had at least on
Becau se yo u can introduce undeclared variables at any point in a calculation, VBS doe
You can make a porti on of a trace disappear if you set the values to 32767 or -32768.
You c an high light a section of a trace by ma
Providing the me mory length is not too s
The lengths o f th e output trace and the input tr
longe r than th e input tra
com paction pr obl ems with non-linea
at the same time, without having to set up a sepa
If yo ur progra m s tructure is complicated, consider typing a
then clicking A pp ly. You wont get any output, but the syste
can in sert the act ual program statements.
Alwa ys try to mak e the script as independent as
unless that would ma ke it harder to un
woul d have to ch ange if the varia
Error s
The ins trum ent V BS tries hard
Errors may be of two main types:
1. The script ma y not be usab
2. The script may be usable, but may fail while running because an incomputable function has been requested.
Sometimes the line number given for an error is wrong. This can happen when the err
type:
1. Missing "Nex t" Missing "End If"
2. Extra "Next" Missing "Until" etc.
This happens bec ause VBS cannot know where you should have put the statement.
If at some point d uring the calculation of an output array, a value goes outside the
will stop, and you will se
displa y the p revio us values. In fact, if you deliberately recalculate only a part of a trace, you can have a mixture
new and old valu es.
202
ERIES
w acquisitions, before being erased. Look for the "Scri
king the points alternately too high and too low by a suitable amount.
hort, the compaction algorithm will give the effect of a thicker trace.
ace need not be the same. You can even make the output trace
ce, but you will need to un
r horizontal scales. It can also be used to show several versions of a function
derstand. If so, give some values as examples, and explain how the script
bles changed.
to help you when errors occur.
le because the interpreter cannot construct a logical structure from it.
e the new values up to the point of the stoppage. To the right of that point, the trace will
l positions than their original ones, make sure
rray positions, that is, beyond the edges of the
ns with the instrument's Enhanced Resolution and
zoom it to see it all. This feature can be used to avoid
rate script for each one.
ll the IFs, ELSEIFs, ENDIFs, FORs, NEXTs, etc and
m will tell you if the structure is acceptable. Then you
possible of variables such as V/Div, T/Div, and memory length,
the error message may go on flashing
pt OK" message. Be patient
udes the case where the input data are
e acquisition before you see anything.
s not check your spelling.
or is of this general
allowed range, the calculation
of
WRXi-OM-E Rev C