User's Manual

MDS 05-6399A01, Rev. D MDS Master Station 51
x710 – When using the Master Station in a legacy x710 network.
Transparent – With and without AES Encryption. (Transparent w/AES Encryption requires an all
SD radio network.)
RF Output Power (dBm) – The RF output power may be set between 30 and 40 dBm (1 to 10 watts) in
1 dB increments. The default setting is 40dBm. This setting represents the output power at the Radio
Card. Output power at the antenna port on the back of the unit will be less due to cable, switching, and
duplexer losses. Full power is not required in many cases, and lower settings will place less demand on
the power supply and reduce the chance of interference with other stations. Only the power necessary to
carry out reliable communications should be used.
Modem Type – This setting determines the over-the-air data speed and bandwidth of the radio’s
transmitted signal. All radios in the network must use the same modem setting to communicate with each
other. The default setting is Modem 9600, but it may be set to any of the selections shown in Error!
Reference source not found.. The table also lists modem sensitivity ratings for the various modems. Note
that some modem choices are limited based on the model purchased.
Transmit/Receive Frequency – The receive and transmit frequencies may be viewed or set here. Transmit/Receive Frequency – The receive and transmit frequencies may be viewed or set here.
Frequencies must be entered for the radio to operate. Consult your station license to determine the
authorized frequencies for your system, and enter them exactly as listed.
Keying Mode – Keying mode must be set to one of the following values:
Data – Radio will key upon receipt of payload data.
RTS – Radio will key upon receipt of an RTS (request to send) signal on the serial port. Note:
RTS keying mode is only supported when the radio is in x710 mode.
Data or RTS – Radio will key upon receipt of either payload data or an RTS (request to send)
signal on the serial port.
Continuous – Radio will be continuously keyed. This is primarily used in a transparent streaming
repeater configuration. Note: Continuous keying mode is only supported in x710 mode, or in
transparent mode when operating as a repeater.
System ID – Provides the possibility for Frequency Re-use. System ID offers nine unique choices
including the default value of NONE. The setting NONE is required for mixed networks comprised of
MDS legacy and SDx products. SDx-only networks can utilize the Frequency Re-use feature by setting
the System ID to a common value [1-8] for all radios in a specific network. System ID offers
approximately 20 dB of additional co-channel isolation when operating networks on the same frequency.
Note that proper system design is required.
Operational Example: SDx System “Alpha” has eight units and SDx System “Beta” has eight units. A
user wishes to occupy frequency 952.1235 MHz on both of these systems. Proper system installation has
been adhered to in both networks. System Alpha’s units would all be set to System ID = 1, System Beta's
units would be set to System ID = 5. Both systems will now operate on the same desired frequency.
FCC Part 90 Repeater Mode – Repeater mode must be set to one of the following values:
None – This is the default value, and is used when the Master Station being configured is not to be
used as a repeater in the network.
Repeater – This value should be selected when the Master Station being configured is to be
installed as a repeater in the network, and will not have devices connected to it that will be polled,
such as attached RTUs.