MDS TransNET 900 Specifications download pdf (Page 79)

MDS 05-2708A01, Rev. E MDS TransNET Ref. Manual 69

10.3 Diagnostic Interface Connections (RJ-11)

Invisible place holder

Figure 21. RJ-11 to DB-9 Adapter Cable—Wiring Details

NOTE: Only wire pins 4, 5, and 6. Pins 1,2, and 3 are reserved for special functions and

are not normally connected.

10.4 Data Interface Connections (DB-9F)

The DATA connector (Figure 22) is used to connect the radio to an external

DTE data terminal that supports the EIA/RS-232 or EIA/RS-485 (balanced)

format, depending on how the radio was configured at the factory. The radio

supports data rates of 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400,

57600, and 115200 bps (asynchronous data only).

The

DATA connector mates with a standard DB-9 plug that is available from

many electronics parts distributors. Table 27 and Table 28 provide detailed

pin descriptions for the

DATA connector in RS/EIA-232 mode and

RS/EIA-485 mode, respectively.Pin Descriptions—RS/EIA-232 Mode

Figure 22. DATA Connector (DB-9F)

As viewed from outside the radio

RXD

TXD

GND

DTE

DB-9 FEMALE

(TO COMPUTER)

TXD

RXD

GND

DTE

RJ-11 PLUG

(TO RADIO)

RJ-11 PIN LAYOUT

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 95 96

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MDS TransNET 900 Specifications Page 79