Measurement-computing USB-4301 Manuel d'utilisateur télécharger pdf (Page 8)

Chapter 1

Introducing the USB-4301

The USB-4301 is a USB-based high-performance, low-cost counter/timer device.

The USB-4301 is designed with a 9513 counter/timer chip. The 9513 chip has five independent 16-bit counters

(65,536 counts). Each counter has an input source, internal count register, load register, hold register, output,

and gate.

The 9513 is software-programmable for event counting, pulse and frequency measurement, alarm comparisons,

and other input functions. The 9513 can generate frequencies with either complex duty cycles, or with one-shot

and continuous-output modes. You can chain up to five 9513 counters together using software to enable a 32-,

48-, 64-, or 80-bit counter that does not require hardware connections. The gate source and gating functions are

software-programmable.

An eight-bit, high-current digital output port provides logic-level control, and can be used to switch solid state

relays. An eight-bit digital input port can be used to sense contact closures and other TTL level signals.

For more information on the 9513 counter/timer, refer to the 9513 data sheet. This document is available at

www.mccdaq.com/PDFmanuals/9513A.pdf.

Software features

For information on the features of InstaCal and the other software included with your USB-4301, refer to the

Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at

www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.

Check www.mccdaq.com/download.htm for the latest software version.

Connecting a USB-4301 to your computer is easy

Installing a data acquisition device has never been easier.

 The USB-4301 relies upon the Microsoft Human Interface Device (HID) class drivers. The HID class

drivers ship with every copy of Windows that is designed to work with USB ports. We use the Microsoft

HID because it is a standard, and its performance delivers full control and maximizes data transfer rates for

your USB-4301. No third-party device driver is required.

 The USB-4301 is plug-and-play. There are no jumpers to position, dual in-line package (DIP) switches to

set, or interrupts to configure.

 You can connect the USB-4301 before or after you install the software, and without powering down your

computer first.

When you connect an HID to your system, your computer automatically detects it and configures the

necessary software. You can connect and power multiple HID peripherals to your system using a USB hub.

 You can connect your system to various devices using a standard four-wire cable. The USB connector

improves upon serial and parallel port connectors with one standardized plug-and-port combination.

 Data can flow two ways between a computer and peripheral over USB connections.

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Measurement-computing USB-4301 Manuel d'utilisateur Page 8