About The Probe Connections - Texas Instruments CBL Manual Book

About the Probe Connections

Input and Output Channels
Three analog inputs, an ultrasonic motion detector input, a digital input,
and a digital output let you connect various probes and sensors to the
CBL. With the variety of probes, you can measure temperature, light,
voltage, sound, force, motion, pH, and more.
Indicators in section
CH2 , CH3
probe may be connected and collecting data at the same time.
The connectors for analog, digital, and ultrasonic probes are different to
make sure that you do not plug a probe into the wrong channel. For
example, you cannot plug a motion detector (
digital channel, or a voltage probe (analog) into a digital or ultrasonic
channel.
Additionally, the labeling on
the green band on the CBL
voltage probes. The labeling for
on the CBL
and matches the blue band on the cable in the CBL digital probe kit
(page 85).
Note: The included voltage probe (for ±10 Volts) can only be used on
and
CH1
Analog Inputs
CHI , CH2
output such as for sound or force. These channels also can measure
resistance. Only
CH1 and
unit.
IMPORTANT: It is very important that the ground connections of the
analog inputs are not connected to different potentials. These ground
connections are all in common. Connecting the grounds to different
potentials may damage the CBL.
Ultrasonic Motion Detector Input
The ultrasonic motion detector input lets you connect a motion detector,
such as the CBRé (Calculator-Based Rangeré), to measure distance.
The motion detector (
to CH3 .
Digital Input and Digital Output
The digital input and digital output let you connect the CBL to 0–5 Volt
binary signals. The digital input (
( DIG OUT
of the display (page 14) show you when
, SONIC , DIG IN or
RJ-11 adapter. The labeling for
.
CH2
, and CH3 are analog inputs for probes that produce a voltage
CH1 has provisions for measuring period and frequency.
CH2 are on the top of the CBL;
SONIC
) channels are on the right side of the CBL.
DIG OUT have been set up. More than one
CH1 , CH2 , and CH3
DIN adapter and TI temperature, light, and
SONIC is red and matches the red band
DIG IN
CH3
) channel is on the left side of the unit next
DIG IN ) and the digital output
CBLé System Guidebook
) into an analog or
SONIC
is green and matches
and DIG OUT
is on the left side of the
CH1 ,
is blue
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