External Components; Usb Connector; Led; Screw Terminals - Measurement Computing us-1208fs User Manual

USB-1208FS User's Guide

External components

The external components – screw terminal banks, LED, and USB connector –are shown in Figure 2.
1
2

USB connector

The USB connector provides +5V power and communication. No external power supply is required.

LED

The LED indicates the communication status; it cannot be disabled. LED states are listed in the table below.
LED Illumination
Steady green
Blinks continuously

Screw terminals

The screw terminals provide the following connections:

Eight analog inputs (

Two analog outputs (

16 digital I/O connections (

One external trigger input (

One external event counter input (

One SYNC I/O for external clocking and multi-unit synchronization (

One calibration output (

One power output (

Five analog ground connections (

One ground connection (
Use 16 AWG to 30 AWG wire when making connections to the screw terminals. The single-ended mode pinout
is shown in Figure 3.
Screw terminal pins 21 to 40
LED
Figure 2. External components
LED behavior
Indication
The USB-1208FS is connected to a computer or external USB hub.
Data is being transferred.
to )
CH0 IN CH7 IN
to
D/A OUT 0 D/A OUT 1
to
PortA0 Port A7
)
TRIG_IN
)
CTR
)
CAL
)
PC +5 V
) and four digital ground connections (
AGND
)
GND
3 Screw terminal pins 1 to 20
4 USB connector
)
, and to )
Port B0 Port B7
SYNC
10
Functional Details
)
)
GND