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SMX920 Base Station & Repeater
2. Installation and Operation
2.1 Installation
SMX920 series radios are securely packed for transport with special packers within a
cardboard container. Before unpacking the SMX920 radio, please inspect the
packaging for signs of damage and report any damage to your SMX920 distributor.
Upon unpacking of the SMX920 radio, please ensure that all items shipped were
received, report any missing items to your SMX920 distributor.
Check the fan is free or does not look blocked as operation of the radio will be
affected if any packaging or shipping damage causes the fan to stop working.
If you intend to install the radio in an equipment rack consult the suppliers
instructions for your system. If the radio is to be used in a stand-alone configuration,
ensure that it is in a secure, dry location with sufficient air space around it to allow for
adequate ventilation. It is recommended that the chassis is earthed to the equipment
rack.
Equipment connection details are located in Appendix 8.1. The SMX920 will draw
approximately 7 to 9A (band dependent) for 50 Watts on transmit and the gauge of the
DC cable fitted to the 12V supply connector should be adequate to ensure less than
0.5V volt drop at this current.
2.2 Operation
The SMX920 can operate in local control Base Station mode or Repeater mode via the
front panel controls. Setting up the SMX920 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 device RS232 serial port to the Microphone
Accessory socket at the front panel of the SMX920. Set the appropriate
parameters as required. See section 8.3 for establishing RS232 Communications.
Note: All SMX920s' are set up with a standard default configuration. Test frequency
are stored within the SMX920 as supplied from Spectra's factory, however these are
not normally accessible and each station is supplied with no test channel .
2.2.1 Setting to Work
The following sections describe the steps necessary to set the SMX920 to operate as
required.
2.2.1.1
Micro Controller Jumper
There is only one jumper and it 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.
8
Technical Manual
RELM/ BK RADIO
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