Signal connections, Analog inputs – Measurement Computing USB-1616FS User Manual
Page 15
USB-1616FS User's Guide
Functional Details
15
Each screw terminal is identified with a label on the board and on the underside of the enclosure lid. Refer to
the table below for the signal name associated with each board label.
Board labels and associated signal names
Board label
Signal name
Board label
Signal name
DIO
0
DIO 0
GND
0
GND 0
1
DIO 1
1
GND 1
2
DIO 2
2
GND 2
3
DIO 3
3
GND 3
4
DIO 4
4
GND 4
5
DIO 5
5
GND 5
6
DIO 6
6
GND 6
7
DIO 7
7
GND 7
TRIG IN
TRIG IN
CTR
CTR
5V
5V
SYNC
SYNC
CHANNEL IN
0
CH 0
AGND
0
AGND 0
1
CH 1
1
AGND 1
2
CH 2
2
AGND 2
3
CH 3
3
AGND 3
4
CH 3
4
AGND 4
5
CH 4
5
AGND 5
6
CH 5
6
AGND 6
7
CH 6
7
AGND 7
8
CH 8
8
AGND 8
9
CH 9
9
AGND 9
10
CH 10
10
AGND 10
11
CH 11
11
AGND 11
12
CH 12
12
AGND 12
13
CH 13
13
AGND 13
14
CH 14
14
AGND 14
15
CH 15
15
AGND 15
Signal connections
Analog inputs
You can connect up to 16 analog input connections (
CH0 IN
through
CH15 IN
) to the screw terminals labeled
Channel IN 0-15
. We recommend that you connect unused analog input terminals to ground terminals during
operation. For example, if you are not using
CH7 IN
, connect this terminal to
AGND 7
.
The analog input channels are configured for single-ended input mode. Each analog signal is referenced to
signal ground (AGND), and requires two wires:
Connect the wire carrying the signal to be measured to
CH# IN
.
Connect the second wire to
AGND
.
The input voltage ranges are ±10 V, ±5 V, ±2.0 V, and ±1.0 V.
For more information on analog signal connections
For more information on single-ended inputs, refer to the Guide to Signal Connections (this document is
available on our web site