User's Manual

16 TRM SB Integration Guide MDS 05-4121A01, Rev. 02
The positive (+) DC power must be provided through pins 23, 24, 25,
26, 27,and 28. The data signal and DC power current return (–) should
be connected to pins 1, 7, 9, 19, 20, 21, 22, and 30. (See Figure 4 on
Page 12 for details.) All power pins should be used to provide sufficient
current capacity in transmit operation.
Shutdown Mode (Energy Conservation)
In some installations, such as at solar-powered sites, it may be necessary
to keep the transceiver’s power consumption to an absolute minimum.
This can be accomplished by configuring the data device (RTU, PLC,
etc.) to ground the
DATA INTERFACE connector Pin 29 to power-down
the radio until communication to other devices is needed. All radio and
microprocessor activity is disabled when the radio is in the shutdown
mode. When the ground is removed from Pin 29, the radio is ready to
operate within 75 milliseconds.
2.5 Data Interface Connections
The transceiver’s DATA INTERFACE connector is configured as a DCE
(modem) and supports over-the-air asynchronous data rates up to
19200 bps. (4800, 8000, 9600, 16000, and 19200 bps) The
DATA
INTERFACE is normally connected to a device/circuit with a TTL
interface. Refer to Figure 8 and Table 4 for a detailed description of
each pin on the
DATA INTERFACE connector.
Some pins on the
DATA INTERFACE connector are used for factory
testing. Use
only the required pins for the application. Damage may
result if improper connections are made.
CAUTION
USE ONLY
REQUIRED PINS