Owner's manual

OM-USB-1608FS-Plus User's Guide Functional Details
10
External components
The OM-USB-1608FS-Plus has the following external components, as shown in Figure 2.
 Screw terminals
 LED
 USB connector
1
Screw terminal pins 21 to 40
3
Screw terminal pins 1 to 20
2
LED
4
USB connector
Figure 2. OM-USB-1608FS-Plus components
USB connector
The USB connector receives the supplied USB cable. When connected to a computer or USB hub, the cable
provides +5 V power and communication. No external power supply is required.
LED
The LED indicates the communication status; it cannot be disabled.
LED behavior
LED state
Indication
On – steady green
The device is connected to a computer or external USB hub.
Blinks once
A USB command is received.
Blinks continuously
An analog input scan is in progress.
Screw terminals
The screw terminals provide the following connections:
 Eight analog inputs (CH0 IN to CH7 IN)
 Eight digital I/O lines(DIO0 to DIO7)
 One external event counter input (CTR)
 One SYNC I/O terminal for external clocking and multi-unit synchronization (SYNC)
 One external trigger input (TRIG_IN)
 One power output (PC+5 V)
 11 analog ground (AGND) and eight digital ground (GND) connections
Use 16 AWG to 30 AWG wire when making connections to the screw terminals. Pinout locations are shown in
Figure 3.