WILLTEK 4400 Mobile Phone Tester Series, User Manual

Page: 329 / 834

Chapter 7 RAPID!
Functions
4460 GSM System Option and 4468 EDGE System Option Version 12.20
305
CHR$
INSTR
LEN
Examples
ASC("A")
will return ‘65’.
Syntax
CHR$(aNumber)
Parameters
aNumber
is a valid numeric expression.
Description
Returns the character corresponding to the ASCII code of
aNumber
as a string.
If
aNumber
is outside the range 0...255, then its least
significant byte will be used (i.e. a modulo 256 operation
will be performed on
aNumber
).
Should
aNumber
have decimal places, then those will be
truncated (this means that there will be no rounding).
If this command is used on a variable that has not been
initialized before, ‘0’ will be returned.
Examples
a$=CHR$(65)
assigns
"A"
to variable a$.
Syntax
INSTR([startPos, ] aString$ , search-
String$)
Parameters startPos
is a numeric expression, interpreted as posi-
tive integer.
aString$
and
searchString$
are string expressions.
Description
Searches
aString$
for the first occurrence of
search-
String$
.
The search will start at the position given by
startPos
or, if omitted, at the beginning of
aString$
.
Return value is the position, where
searchString$
begins.
If
searchString$
is not found within
aString$
, ‘0’
will be returned.
Should
startPos
have decimal places, then those will
be truncated (this means that there will be no rounding).
Examples
a$ = "international or national"
i = INSTR(a$, "national")
j = INST(8, a$, "national")
In this example, variable
i
will be set to ‘6’, while vari-
able
j
will be set to ‘18’.
Syntax
LEN(aString$)
Parameters
aString$
is a string expression.
Description
Returns the number of characters contained in
aString$
.