Measurement-computing USB-DIO96H-50 Manual de usuario descargar pdf (Pagina 12)

USB-DIO96H/50 User's Guide Functional Details

Power source jumper JP2

The power source jumper is labeled JP2 on the board. Use this jumper to configure the USB-DIO96H/50 to use

either the external power connector (POWER IN) or the internal Molex connector. Figure 5 shows the jumper in

each configuration mode.

Figure 5. JP2 configuration modes

USB LED

The USB LED indicates the communication status of the USB-DIO96H/50. It uses up to 5 mA of current and

cannot be disabled. The table below explains the function of the USB LED.

USB LED illumination

LED Illumination

Indication

Steady green

The USB-DIO96H/50 is connected to a computer or external USB hub.

Continuous blink

Initial communication is established between the device and the computer, or data is being

transferred.

PWR LED

The PWR LED illuminates when external power is supplied. The USB-DIO96H/50 incorporates an on-board

voltage supervisory circuit that monitors the external power supply. The PWR LED does not light under the

following circumstances:

 when the input power falls below +4.1 V

 when the input power goes above +5.6 V

50-pin header connectors

The USB-DIO96H/50 has two 50-pin connectors labeled P1 and P2.

Connector P1 provides the following connections:

 48 DIO connections (FIRSTPORTA Bit 0 through SECONDPORTC Bit 7)

 one ground connection (GND)

 one power connection (+5V)

Connector P2 provides the following connections:

 48 DIO connections (THIRDPORTA Bit 0 through FOURTHPORTC Bit 7)

 one ground connection (GND)

 one power connection (+5V)

Each digital port group is divided into two 8-bit ports and two 4-bit ports, and is a discrete emulation of 82C55

mode zero operation. You can configure each port independently for either input or output.

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Measurement-computing USB-DIO96H-50 Manual de usuario Pagina 12