Vernier LabPro - Manual (Page 31)

Revision Date: 08/02/02
LabPro Technical Manual 31
Command 1 Channel Setup
This command sets up a channel for data collection.
Syntax: {1, channel[, operation[, post-proc, delta, equ]] }
Parameter List:
Channel
– indicates channel on which this command operates. The possible values are
Channel number Description
0 All channels
1 – 4 Analog channels 1 through 4
11, 12 Sonic Channel 1, Sonic Channel 2
21, 22 Digital Input 1, Digital Input 2
31, 32 Digital Output 1, Digital Output 2
Operation – indicates the units of measure the channel should return.
Operation Value Analog Channel (1 –4) Sonic Channel (11, 12)
0 Turn channel off Resets channel
1 Auto-ID the sensor
(default to 0-5V if no sensor found) Meters – Returns distance and
∆
time (RT and NON-RT)
2 Voltage ±10V Meters – Returns distance and
∆
time (RT and NON-RT)
3 Current ±10A Feet – Returns distance and
∆
time
(RT and NON-RT)
4 Measures resistance between
ground (pin-2) and the junction of
V
ref
(pin-3) and V
in-low
(pin-6).
Meters – Returns distance,
velocity, and
∆
time (RT) or
distance and
∆
time (NON-RT)
5 Period in seconds of signal on
±10V input line (CH 1 only) Feet – Returns distance, velocity,
and
∆
time (RT) or distance and
∆
time (NON-RT)
6 Frequency in Hertz of signal on
±10V input line (CH 1 only) Meters – Returns distance,
velocity, acceleration,
∆
time (RT)
or distance and
∆
time (NON-RT)
7 Count of transitions on ±10V input
line (CH 1 only) Feet – Returns distance, velocity,
acceleration,
∆
time (RT) or
distance and
∆
time (NON-RT)
10 Temperature (Centigrade) from TI
Temperature or Stainless Steel Unused
11 Temperature (Fahrenheit) from TI
Temperature or Stainless Steel Unused
12 TI Light sensor Unused
14 Voltage, 0-5V Unused
Post-Proc – enables post processing to take place on data collected. Since data is not stored in RT mode,
no post processing is allowed.
Post-Proc Value Description
0 None (RT and NON-RT)
1 d/dt (NON-RT)
2 d/dt and d
2
/dt
2
(NON-RT)