Quatech Asynchronous Communications Adapter DSC-200/300 Manuel d'utilisateur télécharger pdf (Page 37)

10Specifications

Bus interface PCI, 32-bit bus, 5-volt only

IBM-compatible computers

Dimensions: approx. 5.5" x 3.5"

Serial ports

Controller: 16750 with 64-byte FIFOs

Interface: Two female D-9 connectors

Transceivers: SP491 or compatible

Differential output: 2V min. with 50-ohm load (RS-422)

1.5V min. with 27-ohm load (RS-485)

Output rise/fall time: 3ns min., 40ns max., 15ns typ.

Differential input

Threshold: -0.2V min., +0.2V max.

Input resistance: 12k ohm min., 15k ohm typ.

Input current: +/- 1.0mA max.

Power requirements

+5 volts: approx. 320 mA

Temperature: operating 0° to 70°

storage -50° to 80°

Humidity: 10% to 90%

Quatech DSC

-200/300 User

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Quatech Asynchronous Communications Adapter DSC-200/300 Manuel d'utilisateur Page 37