Measurement-computing USB-202-OEM Bedienungsanleitung PDF herunterladen (Seite 11)

USB-202-OEM User's Guide Functional Details

Connector W3

Header connector W3 provides connections for the analog inputs, analog outputs, and the analog ground

reference.

W3 pinout

Pin Signal name Pin description Pin Signal name Pin description

1 CH0 Channel 0 2 CH1 Channel 1

3 AGND Analog ground 4 CH2 Channel 2

5 CH3 Channel 3 6 AGND Analog ground

7 CH4 Channel 4 8 CH5 Channel 5

9 AGND Analog ground 10 CH6 Channel 6

11 CH7 Channel 7 12 AGND Analog ground

13 AOUT0 Analog output 0 14 AGND Analog ground

15 AOUT1 Analog output 1 16 AGND Analog ground

Figure 4. Connector W3 pinout

Screw terminal connectors

Screw terminals J1 through J8 are unpopulated. When populated the screw terminals provide alternative

connections to the header connectors. Refer to the Specifications chapter for screw terminal pinouts.

USB connector

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

LED indicators

The device has two LED indicators – 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.

Refer to Figure 2 on page 10 for the location of these LEDs.

Signal connections

Analog input

You can connect up to 8 single-ended inputs to screw terminals CH0 to CH7. The input voltage range is ±10 V.

Single-ended mode requires two wires; connect one wire to the signal you want to measure (

CHx), and connect

a second wire to the analog ground reference (

AGND).

External pacer I/O

The USB-202-OEM provides one external clock input (AICKI) and one clock output (AICKO) for the analog

input pacer. You can connect an external clock signal to

AICKI.

When using the internal clock,

AICKO outputs the ADC sample clock.

Analog output

The USB-202-OEM has two 12-bit analog outputs (AOUT0 and AOUT1). Both outputs can be updated

simultaneously at a rate of 125 S/s per channel. One output can be updated at a rate of 250 S/s. The output range

is fixed at 0 V to 5 V. The outputs default to 0 V when the host computer is shut down or suspended, or when a

reset command is issued to the device.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 20 21

Kommentare zu diesen Handbüchern

Keine Kommentare

Measurement-computing USB-202-OEM Bedienungsanleitung Seite 11

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Hardware Measurement-computing USB-202-OEM