Technical Manual

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Technical Manual Installation and Operation

2.3 Operation

The MX950 can operate in local control Base Station mode or Repeater mode via the

front panel controls. Setting up the MX950 to operate in the wanted settings is

straightforward and involves one main step.

 Using a PC or handheld serial computer running standard communications

terminal software, connect the PC USB port to the radio USB -type B socket at

the rear panel of the MX950. Set the appropriate parameters as required.

Note: All MX950s’ are set up with a standard default configuration. Test frequency

are stored within the MX950 as supplied from Spectra’s factory, however these are

not normally accessible and each station is supplied with no test channel .

2.3.1 Setting to Work

The following sections describe the steps necessary to set the MX950 to operate as

required.

2.3.1.1 Micro Controller Jumper

There is two jumper located on the main Micro Controller J1 & CNVSS. CNVSS is

used for selecting the microcontroller operation mode. The user will not normally

have to change the position of this jumper as it is only used in the initial factory setup.

J1 is for RF power control type selection. This should always be set to D.

Table 2-1 below summarises the functions of the jumper.

JMP

Function / Description

Default

Selection

Default Position

JMP 1 /

CNVSS

Selects either default single chip

mode or microprocessor mode for

the microcontroller.

Single chip

mode

Fitted - ON

RF power control type selection

D = Discrete PA

H = Hybrid PA

Discrete PA

Fitted ON 'D'

Table 2-1 Micro Controller Jumper

2.3.1.2 Select Operating Mode

The MX950 can operate in a number of different modes. The primary alternatives are

full duplex repeater, which is the default mode and simplex. Using the built-in radio

configuration menu system, the operating mode is programmed for each channel.

When a channel is selected in operation, the MX950 adopts the mode programmed for

that channel.

2.3.1.3 Select Operating Channel

The MX950 has a channel capacity of 127. The RF frequencies setting for each

channel are programmed using the radio configuration menu system channel edit

screen. The operating channel is set via a Software channel command to the radio to

select the channel. i.e CH001 <ENTER>