Diagnostic Interface Connections (Rj-11); Data Interface Connections (Db-9F) - Microwave Data Systems MDS TransNET 900 Installation & Operation Manual

RF CHARACTERISTICS (TNC RF Connector)
TRANSMITTER:
Power Output
(at antenna connector):
Duty Cycle:
Modulation Type:
Output Impedance:
Spurious:
Harmonics:
RECEIVER:
Type:
Sensitivity:
Intermodulation:
Desensitization:
Spurious:
Bandwidth:
Interference Ratio
(SINAD degraded by 3dB):
Time Required to Synchronize
with Master Radio:

10.2 Diagnostic Interface Connections (RJ-11)

1
6
RJ-11 PIN LAYOUT
Figure 20. 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.

10.3 Data Interface Connections (DB-9F)

The connector
DATA
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 1200, 2400, 4800, 9600, 19200, 38400, 57600, and
115200 bps (asynchronous data only).
54 MDS TransNET 900 I&O Guide
0.1 to 1.0 watt (+20 dBm to +30 dBm),
set by user
Continuous
Binary CPFSK
50 Ohms
–60 dBc
–55 dBc
Double conversion superheterodyne
–110 dBm
54 dB minimum (EIA)
75 dB
70 dB minimum
200 kHz
Co-channel:–10 dB
Adjacent channel:+30 dB
Two channels away:+40 dB
Three channels away:+48 dB
0.5 seconds (typical)
RJ-11 PLUG
(TO RADIO)
4 TXD
5 RXD
6 GND
(Figure 21) is used to connect the radio to an external
Invisible place holder
MDS 05-2708A01, Rev. B
DB-9 FEMALE
(TO COMPUTER)
RXD 2
TXD
3
GND 5