各种接口pinout

RS232 (EIA-232) Serial 25 pin

RS-232 was created for one purpose, to interface between Data Terminal Equipment (DTE) and Data Communications Equipment (DCE) employing serial binary data interchange. So as stated the DTE is the terminal or computer and the DCE is the modem or other communications device.

(At the DTE) 25 PIN D-SUB MALE at the DTE (Computer)

25 PIN D-SUB FEMALE at the DCE (Modem)

 

 

 

 

RS-530 (EIA530) Serial 25 pin

 EIA-530, or RS-530, is a balanced serial interface standard that generally uses a 25 pin connector. The RS530 isn´t an actual interfaceis, but a generic connector specification. The connector pinning can be used to support RS422, RS423, V.35 and X.21 to name the most popular ones. 25 pin D-SUB male connector layout

RS530 is just like RS422 and uses a differential signaling on a DB25 - RS232 format - EIA-530 Transmit (and the other signals) use a twisted pair of wires (TD+ & TD-) instead of TD and a ground reference as in RS232 or V.24. This interface is used for HIGH SPEED synchronous protocols. Using a differential signaling allows for higher speeds over long cabling. This standard is applicable for use at data signaling rates in the range from 20,000 to a nominal upper limit of 2,000,000 bits per second. Equipment complying with this standard, however, need not operate over this entire data signaling rate range. They may be designed to operate over a narrower range as appropriate for the specific application.

 

 

 

ITU-TSS V.35 Serial

 Basically, V.35 is a high-speed serial interface designed to support both higher data rates and connectivity between DTEs or DCEs over digital lines.

 

 

 34 pin M/34 male connector.

 

 

 34 pin M/34 female connector.