DirecTV DTV-MD0-0058 用户手册

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页码 49
   
DIRECTV Set-top box information for the installer
 
DIRECTV Proprietary 
 
November 17, 2005 
Version 1.1.a 
Page 8 of 49 
DTV-MD-0058 
3  Data Port Connectors 
Table 3 shows what type of connector and data rate the STB data port has. 
 
Table 3:  Type of Data Port Connector 
STB Model  Type of Data Port Connector
Data Rate (baud) 
D10-100 RJ22 
9600 
D10-200 RJ22 
9600 
D10-300 RJ22 
9600 
D11 USB  115200 
H10 RJ22 
9600 
 
3.1  Low-Speed Data Port Connector  
The STB connector type will be a standard DB-9F or RJ22 (4 way/4 position jack). The pins for 
the DB-9F are as shown in Figure 1. The STB will use three (3) lines (L2-Rx, L3-Tx and L5-
Grnd) for bi-directional full-duplex communications.  Figure 2 shows the orientation of the RJ22 
(4 way/4 position jack). 
 
Line positions, designated as “optional”, may be provided (but are not required to be provided) 
by the STB as a convenience to source a “TRUE” state to those PC serial interface lines that may 
require a “TRUE” state for data transfer.