Texas Instruments CBL Manual Book page 63

Connector Pinouts
The connectors on the probes used on the CBL are 6-pin, British
Telecom-style connectors.
Pin CH1, CH2, CH3
1 Vin ( ,
CH1 CH2
2 Gnd
3 Vres
4 AutoIDENT
5 +5 Volts DC
6 Vin-low
Channels:
Input signal:
Input range:
Resolution (using CBL's
10-bit A/D converter):
Input impedance:
Note: Due to a floating internal reference voltage, it is normal for the CBL to
measure about 30 mV (Vin-low) or 2.0 Volts (Vin) when no input is connected.
¦
Output reference voltage from the CBL through a 15 Kohm resistor.
Vres:
When using this feature, Vres should be tied to Vin-low and the value to be
measured should be connected between Vin-low and Gnd.
¦
Ground (common for all channels).
Gnd:
¦
AutoIDENT: AutoIDENT
connected from pin 4 to ground.)
¦
Ultrasonic motion detector input.
Echo:
¦
Init: Distance initialization signal
¦
Clock-In: External digital input clock.
¦
D0 In to D3 In:
¦
Clock-Out: Digital output clock.
¦
D0 Out to D3 Out:
on page 69).
SONIC
only) Echo
Init
AutoIDENT
+5 Volts DC
Gnd
n/a
Vin
CH1 and
Analog data
±10 Volts
19.6 mV
740KJ to 2.0 Volts
probe detection data input. (
Input pins for digital input pulses.
Output pins for digital output pulses (refer to the example
DIG IN
Clock-In
Gnd
D0 In
D1 In
D2 In
D3 In
CH2 only
CBLé System Guidebook
DIG OUT
Clock-Out
Gnd
D0 Out
D1 Out
D2 Out
D3 Out
Vin-low
CH1 , CH2 , CH3
Analog data
0 to 5 Volts
5.6 mV
748KJ to 0.03 Volts
AutoIDENT resistor
63