Rs-422/485 Data Interface Board; Input/Output; Figure 5.3-1: Dib-485 Front Panel - Moog 903 User Manual

Fiber optic video/data multiplexer fmb-x-2.5 version

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903-0623-00 Rev. A

5.3

DIB-485 - RS-422/485 Data Interface Board

Card P/N 903-0017-00

The DIB-485 card is obsolete, and this section is for information only. RS-422/485 channels for

new systems can be provided by other cards, such as AIB-4 and 907-485E.

RS-422/485 Data Interface Boards (DIB-485) are compatible with several types of bidirectional RS-422,

RS-485, and TTL signals. The DIB-485 cards are default configured with channels 1, 2 and 3 as RS-485

half duplex (autosense = 9600 baud) and channels 4 and 5 as RS-422. The DIB-485 cards may be

installed at either end of the system in any slots available for data boards.

All lines of the five front panel connectors shown in Figure 5.3-1 are protected by 250 mA fuses and

transient voltage suppression diodes. Channel 1, denoted with a black dot, is slew rate limited, which

minimizes sensitivity to noisy lines while allowing operation at data rates up to 250 kbaud. Channel 1 may

also be configured for compatibility with AC-coupled, or transformer-coupled, RS-485 used by such

devices as Kraft manipulators.

Focal Technologies Corp.

Model 903 User's Guide, FMB-X-2.5 Version

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