Board components, Usb connector, Header connectors – Measurement Computing USB-1208FS-Plus-OEM User Manual
Page 9
USB-1208FS-Plus-OEM User's Guide
Functional Details
9
Board components
The board components – header connectors, LED, and USB connector –are shown in Figure 2.
1
Header connector pins 21 to 40
3
USB connector
2
LED
4
Header connector pins 1 to 20
Figure 2. Board components
USB connector
Receives the supplied USB cable. When connected to a computer or USB hub, the cable provides power and
communication. No external power supply is required.
LED
The following table lists the behavior of the device LED.
LED state
Indication
Steady green
The device is connected to a computer or external USB hub.
Blinks continuously
Data is being transferred.
Header connectors
The header connectors provide the following connections:
Eight analog input connections (
CH0 IN
to
CH7 IN
,
CH0
IN
HI/LO
through
CH3
IN HI/LO
)
Two analog output connections (
D/A OUT 0
to
D/A OUT 1
)
16 digital I/O connections (
PortA0
to
Port A7
, and
Port B0
to
Port B7
)
External trigger input (
TRIG_IN
)
External counter input (
CTR
)
Bidirectional terminal for external clocking or multi-unit synchronization (
SYNC
)
Power output (
+VO
)
Analog ground (
AGND
) and ground (
GND
)
The differential and single-ended mode pinouts are shown in the following tables.