MDS MDS 9710 Series Specifikace stáhnout pdf (Strana 34)

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

This command displays or sets the desired RF forward output power set-

ting of the radio. The

PWR command parameter is specified in dBm and

can range from 20 through 37. The default setting is 37 dBm (5 watts).

To read the actual (measured) power output of the radio, use the

SHOW

PWR

command. A dBm-to-watts conversion chart is provided in

Section 6.7 (Page 40).

RSSI

Received Signal

Strength Indicator

This command continuously displays the radio’s Received Signal

Strength Indication (RSSI) in dBm units, until you press the

key. Incoming signal strengths from –50 dBm to –120 dBm can be read.

NOTE: The RSSI samples the incoming signal for one to two seconds

before providing an average reading to your computer terminal

or HHT.

RTU [ON/OFF/0-80]

RTU Simulator This command enables or disables the radio’s internal RTU simulator,

which runs with GE MDS’ proprietary polling programs (poll.exe and

rsim.exe). The internal RTU simulator is available whenever diagnos-

tics is enabled in a radio. This command also sets the RTU address that

the radio responds to.

Use the internal RTU for testing system payload data or pseudo bit error

rate testing. It can be helpful in isolating a problem to either the external

RTU or the radio.

Use the RTU simulator in a polled environment for testing purposes. See

GE MDS Publication 05-3467A01 for more information.

RX [xxx.xxxx]

Receive Frequency This command selects or displays the radio’s receive frequency in MHz.

The frequency step size is 6.25 kHz. Some models might be set to 5 kHz

steps to match the frequency plans of some band plans.

If the customer frequency is not programmed at the factory, a default

frequency is programmed in the radio near the center of the frequency

band.

NOTE: A large change in receive frequency (more than 5 MHz)

requires adjustment of the receiver helical filters for maximum

performance and RSSI. See Section 6.2, Helical Filter Adjust-

ment (Page 33) for details.

ENTER

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MDS MDS 9710 Series Specifikace Strana 34