Measurement-computing USB-2020 Manuale Utente Scaricare il pdf (Pagina 12)

USB-2020 User's Guide Functional Details

Connectors and LEDs

Figure 4. Location of connectors and LEDs

USB connector

Clock I/O BNC connector (CLK IO)

Analog input channel 0 BNC

connector (CH0)

External power

connector

External digital trigger input BNC connector

(TRIG IN)

USB Activity LED

40-pin IDC connector

Analog input channel 1 BNC connector

(

CH1

)

Device Ready LED

BNC connectors

The USB-2020 has four BNC connectors that provide connections for the following signals:

 Two single-ended analog inputs

 One external digital trigger input

 One clock input/output

The external digital trigger input signal is also available on the 40-pin IDC connector.

Status LEDs

The Device Ready LED turns on after the device is enumerated by the system and is associated with a

hardware driver.

The

USB Activity LED turns on when the USB-2020 is transmitting or receiving data.

USB connector

The USB connector provides power to the USB-2020 and communication with the host computer.

External power connector

The USB-2020 requires external power. Connect the CB-PWR-9 power supply to the external power connector.

This power supply provides 9 VDC, 3 A power, and plugs into a standard 120 VAC outlet.

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Measurement-computing USB-2020 Manuale Utente Pagina 12