RS232 null modem.pdf part of RS232 null modem.pdf, RS232 кабел с женски букси text manual preview

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CableEye Wiring Report Name: 3 DB9F-DB9F-S7X

MATCH DATA
DB9 NULL MODEM

7-6-03 12:18 PM

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Socket L DB9 Female
SH 1 2 3 4 5 6 7 8

Socket R DB9 Female
SH 6 7 8 1 2 3 4 5

NETLIST L-SH L-1 L-2 L-3 L-4 L-5 L-6 L-8 R-SH L-7 R-8 R-3 R-2 R-6 R-5 R-4 R-1 R-7

NOTES DB9 NULL MODEM Use this female-to-female cable in any application where you wish to connect two DTE devices (for example, two computers). A male-to-male equivalent of this cable would be used to connect two DCE devices. The cable shown below is intended for RS232 asynchronous communications (most PC-based systems). If you are using synchronous communications, the null modem will have additional connections for timing signals, and a DB25 connector would be necessary. NOTE: Not all null modem cables connect handshaking lines the same way. In this cable, Request-to-Send (RTS, pin 7) asserts the Carrier Detect (pin 1) on the same side and the Clear-to-Send (CTS, pin 8) on the other side of the cable. This device may also be available in the form of an adapter.

CableEyeTM by CAMI Research Inc.

Conductivity Threshold: 2

Isolation Threshold: 5 M