B&B Electronics 4 Channel Input Buffer Board SDAIBB Manuale Utente Scaricare il pdf (Pagina 17)

Documentation Number UD128A8D4602 Manual Chapter 2 13

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph 353-91-792444 – Fax 353-91-792445

Chapter 2:

CONNECTIONS AND EXAMPLES

Cautions

Avoid damage to your Data Acquisition Module inputs/outputs and computer

and other equipment.

This is very important in dry climates and during the

Winter months!

Before removing the module from the anti-static protective packaging

• Discharge any static electricity buildup on your body by touching a large

grounded metal surface or the metal chassis on equipment connected

to earth ground by a 3-wire power cord.

• Avoid touching the connectors or I/O port connection wires until any

static on your body has been discharged.

• Unplug the USB Cable before making connections to the I/O plug from

your controlled or monitored devices.

Safety Checks

• After making connections to your I/O connector plug, make sure no

hazardous voltages exist between the I/O Connection lines from your

devices to the ground pins (A-GND and D-GND) by checking for AC

and DC voltages with a Voltmeter or DVM. Then connect your I/O plug

to the I/O Connector on the module.

• Check for AC and DC voltages between the A-GND or D-GND and the

computer ground/chassis before connecting the USB cable to the

module and computer.

Protect Your Module

The module can withstand minor overvoltage, it is protected up to +15V

or –10V. Connections which exceed the ratings or which cause

excessive input or output current may damage the module.

1. Don’t short or connect the digital or analog outputs to ground or to

a voltage source without current limiting resistance.

2. If your load has less resistance than the specified ratings,

excessive current will damage the driver circuits. Use current

limiting resistors in series with the output lines.

CAUTION: ELECTROSTATIC SENSITIVE DEVICE

Use ESD precautions for safe handling.

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B&B Electronics 4 Channel Input Buffer Board SDAIBB Manuale Utente Pagina 17