C
OPYING PERMITTED PROVIDED
TI
COPYRIGHT NOTICE IS INCLUDED
.
© T
EXAS
I
NSTRUMENTS
I
NCORPORATED
G
ETTING
S
TARTED WITH
CBR
43
In case of difficulty
If you have this problem:
Try this:
Difficulty transferring the
RANGER
program or collecting data
Check for a poor calculator-to-
CBR
connection. Always push in
firmly
on both
ends of the cable.
Check for low batteries (see page 42).
CBR
begins collecting data by
itself
If you set down the CBR with the
¤
button face down, the
¤
button
may depress and activate sampling. Press
¤
again to stop sampling.
Before storing the
CBR,
properly exit the
RANGER
program (using
QUIT)
or any
other
CBR
or
CBL
program.
CBR
doesn’t quit collecting data
Press
¤
to stop sampling. Repeat sample. If problem continues, check
program code.
LINK ERROR
message
Attach the
CBR
to the calculator with the calculator-to-
CBR
cable.
Check for a poor calculator-to-
CBR
connection. Always push in
firmly
on both
ends of the cable.
If you do not want to (or cannot) attach the
CBR
to the calculator, press
½
to
break out of the
program, and then choose
QUIT
.
Insufficient memory
You must have sufficient memory for the
RANGER
program and the data lists. The
programs and lists require approximately 17,500 bytes. Delete programs and/or
data.
Calculator doesn’t match activity
instructions
This guide applies to all the TI calculators that can be used with
CBR
, so you may
find that some of the menu names, screens, or keys in this guide do not match
exactly those on your calculator. Choose the closest match. For example, if the
instructions say “Choose
DISTANCE MATCH
,” on the TI
-
83 you would choose
DIST
MATCH
.
Data doesn’t look right:
0
points not on the curve
0
jagged plots
0
flat plots
0
broken plot
Repeat the sample, ensuring that the CBR is aimed directly at the object.
Read pages 6–12 on getting good data samples.
Check that the
clear zone
does not contain students, tables, or other objects.
When using two
CBR
units at the same time in the same room, one group should
complete a sample before the next group begins their sample.
Check for a poor calculator-to-
CBR
connection. Always push in
firmly
on both
ends of the cable.
Check for low batteries (see page 42).
Check that the degree of smoothing is not too much or too little.
CBR
won’t work with a TI
-
85
Check to see that “
CBL
” appears at the end of the serial number on the back of
the calculator to indicate compatibility with
CBL
and
CBR
.
The TI
-
85 does not have statistical plotting capabilities, so some explorations (such
as using
on plotted data) are not possible on the TI
-
85.
Lost calculator-to-
CBR
cable
You can use the calculator-to-calculator cable that came with the calculator. (The
calculator-to-calculator cable is much shorter, so you may wish to order a
replacement cable.)
Frequently low batteries
Before storing the
CBR,
properly exit the
RANGER
program (using
QUIT)
or any
other
CBR
or
CBL
program, and disconnect
CBR
from the calculator.
When you try to run the
RANGER
program, nothing happens
If you edit or view the
RANGER
program, the next time you run it, it may take up
to two minutes for the calculator to prepare the program to run. This is normal.
Error message: Variable is locked
or protected (TI
-
92 only)
You must unlock the variables L1, L2, L3, L4, and L5. See the calculator manual.