Analog Input Terminals (Ch0 In To Ch15 In) - Measurement Computing USB-1616FS User Manual

USB-1616FS User's Guide
The screw terminals provide the following connections:
! eight digital I/O terminals (
! one external digital trigger terminal (
! one power terminal (
! eight ground terminals (
!
one external event counter terminal (
! one terminal for external clocking and multi-unit synchronization (
! 16 analog input terminals (
! 16 analog ground terminals (
Use 14 AWG to 30 AWG wire for your signal connections.
Caution! Keep the length of stripped wire at a minimum to avoid a short to the enclosure! When
connecting your field wiring to the screw terminals, use the strip gage on the terminal strip, or
strip to 5.5 - 7.0 mm (0.215" to 0.275") long.
Each screw terminal is identified with a label on the board and on the underside of the enclosure lid. Refer
to Table 3-3 for the signal name associated with each board label.
Board label
DIO 0
1
2
3
4
5
6
7
TRIG IN
5V
CHANNEL IN 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Analog input terminals (CH0 IN to CH15 IN)

You can connect up to 16 analog input connections (
labeled
Channel IN 0-15
terminals during operation. For example, if you are not using
to )
DIO 0 DIO 7
)
TRIG IN
)
5V
to )
GND 0 7
)
CTR
CHANNEL IN 0 to 15
)
AGND 0 to 15
Table 3-3. Board labels and associated signal names
Signal name Board label
DIO 0 GND
DIO 1
DIO 2
DIO 3
DIO 4
DIO 5
DIO 6
DIO 7
TRIG IN CTR
5V SYNC
CH 0 AGND
CH 1
CH 2
CH 3
CH 3
CH 4
CH 5
CH 6
CH 8
CH 9
CH 10
CH 11
CH 12
CH 13
CH 14
CH 15
. We recommend that you connect unused analog input terminals to ground
3-4
)
SYNC
)
Signal name
0 GND 0
1 GND 1
2 GND 2
3 GND 3
4 GND 4
5 GND 5
6 GND 6
7 GND 7
CTR
SYNC
0 AGND 0
1 AGND 1
2 AGND 2
3 AGND 3
4 AGND 4
5 AGND 5
6 AGND 6
7 AGND 7
8 AGND 8
9 AGND 9
10 AGND 10
11 AGND 11
12 AGND 12
13 AGND 13
14 AGND 14
15 AGND 15
through ) to the screw terminals
CH0 IN CH15 IN
, connect this terminal to
CH7 IN
Functional Details
.
AGND 7