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Interface Converter Selection Chart
Model Interface 1 Interface 2 No. of Signals Converted Physical Remarks
Type Conn. Type Conn.
62-1/2 RS-232 DB25 EIA-530 DB25 13 SA RS-422 Signals
63-2SA RS-232 DB25 RS-422 Term 2 SA TD & RD LED's
63-3/4 RS-232 DB25 RS-422 DB25 8 SA Very Popular
65AX RS-232 DB25 CLOOP* TERM 2 SA Active or Passive
121 RS-232 CARD RS-422 TERM 2 RM Dual Converters
122 RS-232 CARD 422/485 TERM 4 RM Dual Converters
234 RS-232 DB25 RS-232 DB25F 9 SA Modem Eliminator
235 V.35 34 Pin F V.35 34 Pin F 7 SA Modem Eliminator
236 G.703 RJ-45 V.35/RS-232 DB25 4 SA 64 KBPS G.703
240 RS-232 DB25 V.35 DB25F 13 SA DTE/DCE & LCD
242 RS-232 DB25 X.21 DB15 5 SA Power Stealing
243 RS-232 DB25 X.21 DB15 5 SA DTE/DCE & LCD
245 RS-232 DB25 422/485 DB25 2 SA Opto-Isolated
248 V.35 DB25 V.35/232 DB25 10 SA Opto-Isolated
253 RS-232 DB9 RS-422 TERM 2 SA Power Stealing
256 RS-232 DB25 RS-422 RJ11/TERM 2 SA TD Powered/LCD
260 RS-232 DB25 RS-422 TERM 2 SA Power Stealing
261 RS-232 DB25 RS-422 DB25 2 SA DG Compatible
263 RS-232 DB25 RS-422 TERM 2 SA Power Stealing
265 RS-232 DB25 RS-422 TERM 2 SA TD Powered
267-12 RS-232 DB25 EIA530 DB25** 13 RM 10CATI,3 CAT II
267-34 RS-232 DB25 188-14 DB25 13 RM MIL-STD-188-115-TYPE1
268 RS-232 DB25 RS-232 DB25 4 SA Opto-Isolated
272 RS-422 DB25 Fiber ST 2 SA Full Duplex
276 RS-485 DB25 Fiber ST 2 SA Half Duplex
279 Fiber Multimode Fiber Singlemode 2 SA DC-2.5 MBPS
281 RS-422 DB25 RS-422 DB25 4 SA Opto-Isolated
282 RS-232 DB25 RS-232 DB25 8 SA Opto-Isolated
285 RS-232 DB25 RS-422/485 TERM 2 SA Select 422 or 485
287 RS-232 DB9 RS-422 RJ-12 2 SA 4 KV Isolation
290 RS-232 DB25 422/485 RJ-11 2 SA 16 422/485
365 RS-232 DB25 RS-422/485 --- 2 SA AC Powered
366 RS-232 DB25 RS-485 TERM 2 SA AC Powered
370 AUI DB15 Fiber ST 2 SA Powered by AUI
371 10Base-T RJ-45 Fiber ST 3 SA AC Powered
372 100Base-T RJ-45 Fiber ST 2 SA AC Powered
373 10Base-T RJ-45 Fiber ST 2 SA 10 Base FL compatible
374 10Base-T RJ-45 Fiber Singlemode 2 SA 10 Base FL compatible
8321 RS-485 Term RS-485 Term 2 DIN Opto Isolated
8322 RS-232 Term RS-485 Term 2 DIN Opto Isolated
8323 RS-232 Term RS-422 Term 2 DIN Opto Isolated



Notes:
*CLOOP is Current Loop
**EIA-530 defines connector signal assignment, not voltage levels



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Bomara Associates Phone: 800.5BOMARA (800.526.6272) Phone: 978.452.2299 Fax: 978.452.1169 3 Courthouse Lane, Chelmsford, MA 01824 USA
email: bobr@bomara.com      web: www.bomara.com
Serving the marketplace for over 35 years