Справочник Пользователя для Pelco PelcoNet Multimedia Transmission Via Network Net350

74

C2907M-D (4/05)

Some of the connection examples that follow require a DB9 cable. Refer to the following figure when one is needed.

Figure 50.  DB9 Cable Wire Splicing

SPECTRA

ESPRIT

TX+

TX-

RX+

RX-

TX+

TX-

RX+

RX-

DB9

TO RECEIVER

1
2
3
4
5
6
7
8
9

DCD (DATA CARRIER DETECT)
RX (RECEIVE DATA)
TX (TRANSMIT DATA)
DTR (DATA TERMINAL READY)
GND (GROUND)
DSR (DATA SET READY)
RTS (READY TO SEND)
CTS (CLEAR TO SEND)

RX+ (RECEIVE DATA PLUS)
TX- (TRANSMIT DATA MINUS)

GND

TX+ (TRANSMIT DATA PLUS)
RX- (RECEIVE DATA MINUS)

1 2 3 4 5

6 7 8 9