Analog Voltage Output Terminals (Vout0 To Vout7); Digital I/O Terminals (Dio0 To Dio7) - Measurement Computing USB-3103 User Manual

USB-3103 User's Guide

Analog voltage output terminals (VOUT0 to VOUT7)

The screw terminal pins labeled
output range for each channel is software-programmable for either bipolar or unipolar. The bipolar range is
±10 V, and the unipolar range is 0 to 10 V. The channel outputs may be updated individually or simultaneously.

Digital I/O terminals (DIO0 to DIO7)

You can connect up to eight digital I/O lines to the screw terminals labeled
You can configure each digital bit for either input or output.
When you configure the digital bits for input, you can use the digital I/O terminals to detect the state of any
TTL level input; refer to Figure 6. When the switch is set to the +5 V USER input, DIO7 reads TRUE (1). If you
move the switch to DGND, DIO7 reads FALSE (0).
For more information on digital signal connections
For more information on digital signal connections and digital I/O techniques, refer to the Guide to Signal
Connections (available on our website at www.mccdaq.com/support/DAQ-Signal-Connections.aspx).
VOUT0 1
NC 2
VOUT2 3
NC 4
AGND 5
VOUT4 6
NC 7
VOUT6 8
NC 9
AGND 10
NC 11
NC 12
NC 13
NC 14
AGND 15
NC 16
NC 17
NC 18
NC 19
AGND 20
DIO0 21
DIO1 22
DIO2 23
DIO3 24
DIO4 25
DIO5 26
DIO6 27
DIO7 28
Figure 5. USB-3103 signal pinout
VOUT0 to VOUT7
DGND
Figure 6. Schematic showing DIO7 detecting the state of a switch
29 VOUT1
30 NC
31 VOUT3
32 NC
33 AGND
34 VOUT5
35 NC
36 VOUT7
37 NC
38 AGND
39 NC
40 NC
41 NC
42 NC
43 AGND
44 NC
45 NC
46 NC
47 NC
48 AGND
49 SYNCLD
50 DGND
51 NC
52 CTR
53 DGND
54 DIO CTL
55 DGND
56 +5V
are voltage output terminals (see Figure 5). The voltage
DIO0
DIO7
+5V
11
Functional Details
to (pins 21 through 28).
DIO7