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Quatech RS-422 user manual Specifications, With 64-byte FIFOs optional

Models: RS-422

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9 Specifications

Bus interface:

PCI, 32-bit bus, 5-volt only

 

 

IBM-compatible computers

Dimensions:

approx. 5.5" x 3.5"

Serial ports

 

Controller:

16550 with 16-byte FIFOs

 

 

(16750 with 64-byte FIFOs optional)

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%

DSCLP-200/300 User's Manual

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Quatech RS-422 user manual Specifications, With 64-byte FIFOs optional
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