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National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • [email protected] • ni.com

Digital I/O Devices

Measurements

Overview

The NI 6503 devices are 24-bit parallel digital I/O interfaces

for computers with PCI, USB, PCMCIA, or ISA buses. The

NI 6507/NI 6508 families are 96-bit parallel digital I/O devices for

computers with PCI, PXI/CompactPCI, USB, or ISA buses. All

NI 650x devices are for 5 V TTL/CMOS I/O signals. For higher-

voltage signals, see page 486 for digital signal conditioning

solutions or consider the NI 6527 devices on page 334.

Hardware

82C55 Parallel Port Interfaces

The NI 650x digital I/O devices use the 82C55 Parallel Port

Interfaces (PPIs). The NI 6503 devices contain one PPI, and the

NI 6507/NI 6508 devices contain four PPIs. Each PPI controls

24 bits of digital I/O and has three 8-bit ports (A, B, and C), which

you can program as either inputs or outputs. Ports A and B are

always used for digital I/O, while port C can be conﬁgured for

digital data I/O, control, status, or handshake signals.

Digital I/O Power-Up

State Selection

You can power up the PCI-6503,

PC-DIO-24, PC-DIO-96, PXI-6508, and

DAQPad-650x digital I/O lines in a

user-deﬁned state – either high or low. On these devices, each

line is connected to a 100 kΩ resistor and you can use a jumper

to select whether the lines of the device power up in the high or

low state. The DAQCard-DIO-24 and PCI-DIO-96 have 100 kΩ

resistors that always pull high.

• 24 or 96 digital input/output lines

• 5 V TTL/CMOS

• 2-wire handshake capability

• Known power-up states

• Available for PCI, PXI/CompactPCI,

ISA, USB, and PCMCIA

• NI-DAQ driver simpliﬁes

conﬁguration and measurements

Models

• NI 6503

- PCI-6503

- DAQCard-DIO-24

- PC-DIO-24

• NI 6507/NI 6508

- PCI-DIO-96

- PXI-6508

- DAQPad-6507 for USB

- DAQPad-6508 for USB

- PC-DIO-96

USB devices for Windows 2000/Me/98 only

Real-Time

See page 142

NI Application Software

• LabVIEW

• Measurement Studio

Operating Systems

• Windows 2000/NT/Me/9x*

• Mac OS**

Applications

• Interface to parallel digital

I/O peripherals

• Monitoring and control of switches,

relays, actuators, lights, and motors

• BCD-compatible panel meters and

test equipment

Accessories

See page 338

* Visit ni.com/info and enter winxp for the

latest operating system information

**Not for all hardware

NI 650x

Low-Cost Digital I/O 24 or 96 Lines, 5 V TTL/CMOS

INFO CODES

For more information

or to order products

online, visit ni.com/info

and enter:

pci6503

daqcarddio24

pcidio24

pcidio96

pxi6508

daqpad6507

daqpad6508

pcdio96

BUY ONLINE!

Digital Maximum Onboard Logic Handshaking Pattern

Family Bus I/O Lines Rate Memory Level Isolation I/O I/O Messaging Triggering

PCI,

NI 6503 PCMCIA, 24 Unstrobed – 5 V TTL/CMOS – ✓

– ✓ –

ISA I/O

NI 6507 PCI,

NI 6508 PXI/CPCI, 96 Unstrobed – 5 V TTL/CMOS – ✓

– ✓ –

USB, ISA I/O

Rates may depend on application, computer, software. See page 344 for more information.

Table 1. NI 650x Speciﬁcations Overview (see page 344 for detailed speciﬁcations)

Device Connector

PCI-6503 50-pin, see Figure 3

PC-DIO-24

DAQCard-DIO-24 27-pin; cable adapts it to the 50-pin connector shown in Figure 3

NI 6508 devices 100 pin; see Figure 2

Onboard screw terminals for all I/O signals and strain relief for

DAQPad-6507 ruggedized wiring. The DAQPad-6507 does not need

additional cables or external termination accessories.

Table 2. Digital Connectors

1 2 3

Indice de contenidos

Pagina 1 - BUY ONLINE!

336National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • [email protected] • ni.comDigital I/O DevicesMeasurementsOverviewThe NI 6503 devices a

Pagina 2 - Ordering Information

APAAPBAPCAPC0 & APC3BPC0 & BPC3CPC0 & CPC3DPC0 & DPC3/8/2/2/2/2/8/8I/O ChannelInterfaceCircuitryData BusControl LinesNI 6507/NI 6508 D

Pagina 3 - Digital I/O Speciﬁcations

345National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • [email protected] • ni.comDigital I/O SpeciﬁcationsMeasurementsDigital I/O Speciﬁcatio

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