Measurement-computing USB-1208FS-Plus-OEM Bedienungsanleitung PDF herunterladen (Seite 9)

USB-1208FS-Plus-OEM User's Guide Functional Details

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.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 25 26

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Measurement-computing USB-1208FS-Plus-OEM Bedienungsanleitung Seite 9