MDS MDS 9710 Series Especificações descarregar pdf (Página 20)

12 MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. D

Enable Sleep Mode through RTU control by asserting a ground (or

RS-232 low) on Pin 12 of the radio’s

DATA INTERFACE connector.

When Pin 12 is opened (or an RS-232 high is asserted), the radio is ready

to receive data within 75 milliseconds.

All normal functions are suspended while the radio is in Sleep Mode.

The

PWR LED is off, except for a quick flash every five seconds.

System Example

The following example describes Sleep Mode implementation in a typ-

ical system. Use this information to configure a system that meets your

own particular needs.

Sleep Mode Example:

Suppose you need communication to each remote site only once

per hour. Program the RTU to raise an RS-232 line once each

hour (DTR for example), and wait for a poll and response before

lowering it again. Connect this line to Pin 12 of the radio’s

DATA

INTERFACE connector. This allows each RTU to be polled once

per hour with a significant savings in power consumption.

Invisible place holder

3.0 OPERATION

In-service operation of the transceiver is completely automatic. Once

the unit is properly installed and configured, operator actions are limited

to observing the front panel LED status indicators for proper operation.

If all parameters are correctly set, start radio operation by following

these steps:

1. Apply DC power to the transceiver.

2. Observe the LED status panel for the proper indications (Table 7).

3. If not done earlier, reﬁne the antenna heading of the station to maxi-

mize the received signal strength (RSSI) from the master station.

Use the

RSSI command from an HHT connected to the radio’s DIAG.

connector. See Section 4.0, TRANSCEIVER PROGRAMMING on

Page 14. This can also be done with a DC voltmeter as described in

Section 3.2, RSSI Measurement (Page 13).

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MDS MDS 9710 Series Especificações Página 20