Measurement-computing USB-1608GX-2AO-OEM Manual de usuario descargar pdf (Pagina 10)

USB-1608GX-2AO-OEM User's Guide Functional Details

Board components

Board components are shown in Figure 3. Note that each screw terminal location is unpopulated.

1 Screw terminal (unpopulated) 5 Pull-up/down jumper W1

2 Header connector W4 6 Status LED (top) and Activity LED (bottom)

3 Header connector W6 7 USB connector

4 Screw terminal (unpopulated)

Figure 3. USB-1608GX-2AO-OEM external components

USB connector

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

LEDs

The device has two LEDs – Status and Activity.

 The

Status LED turns on when the device is detected and installed on the computer.

 The

Activity LED blinks when data is transferred, and is off otherwise.

Figure 3 shows the location of each LED.

Header connectors

The header connectors provide the following connections:

 16 SE (

CH0 to CH15) or eight DIFF (CH0H/CH0L to CH7H/CH7L) analog input connections

 Eight digital I/O connections (

DIO0 to DIO7)

 Two analog output connections (

AOUT0, AOUT1)

 One external clock input (

AICKI) and one external clock output (AICKO) for analog inputs

 One external clock input (

AOCKI) and one external clock output (AOCKO) for analog outputs

 One digital trigger input (

TRIG)

 Two counter inputs (

CTR0, CTR1)

 One timer output (

TMR)

 One power output (

+5V)

 13 analog ground (

AGND) and five digital ground (GND) connections

The differential mode pinout is shown on page 11. The single-ended mode pinout is shown on page 12.

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Measurement-computing USB-1608GX-2AO-OEM Manual de usuario Pagina 10