CBLé System Guidebook 7
Introduction to the CBL
Probes Used with the CBL
Probes (sensors), provide the means by which data is collected or
sensed. In addition to the three probes provided, many existing third-
party probes such as ultrasonic motion detectors, force probes, pH
sensors, etc. can be used with the CBL system when connected with
optional adapters.
Using CBL with CBR
é
(Calculator-Based Ranger
é
)
You can use the Texas Instruments CBR as an ultrasonic motion
detector with CBL. A special cable is required. See the CBR guidebook,
Getting Started with CBRé, for information on features and commands.
Automatic Power Down
é
(APD
é
)
To prolong battery life, the APD feature turns off the CBL automatically
after 10 minutes without any activity. When you press P, the CBL
will be exactly as you left it. The CBL does not APD while it is in
Multimeter
mode, nor when
READY
or
SAMPLING
is active.
Note that for sample times greater than five minutes, the connected
calculator may power down automatically by its APD feature. The CBL
cannot transfer the collected data to a calculator that is off. After turning
the calculator back on, you must resend the commands to retrieve the
collected data from the CBL.
About the Channels
Probes are connected to the CBL through input or output connections
that are called “channels.” There are six channels on the CBL to which to
connect probes. There are three analog channels (
CH1
,
CH2
, and
CH3
),
one ultrasonic motion detector channel (
SONIC
), one digital input
channel (
DIG IN
), and one digital output channel (
DIG OUT
).
¦ You can collect data at rates of up to 10,000 points per second for up
to 512 points per channel.
¦ You can collect data on up to five channels simultaneously.
¦ You can collect data and plot it in real-time at a rate of up to 14 points
per second. (The exact limit depends on the calculator program and
battery freshness.) You cannot collect and plot data in real-time for a
sample time that is greater than the APD of the connected calculator
(about five minutes).
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