EDACS REPEATERS
2-5
A detailed explanation of each menu and the parameters in it follows.
System parameters
When you select the
SYSTEM PARAMETERS
menu the EDACS Repeater system parameters are
displayed and one of the soft keys on the right of the screen is dedicated to each parameter - see
Fig. 2-3
System parameters menu.
B3354
Fig. 2-3 System parameters menu
Changing system parameters
To change a system parameter, first press the soft key appropriate to the parameter to be changed.
The selected parameter is highlighted on the listing. For example, pressing
[select system]
displays
CURRENT SYSTEM
, and pressing
[control channel]
displays
CONTROL CHANNEL
:.
There are then two methods for changing the parameter.
•
For the
SYSTEM TYPE
and Tx
POLARITY
parameter, soft keys are shown for each
system type or polarity option. Press the appropriate soft key.
•
If the system type is being changed, the selected type name is shown against the
CURRENT SYSTEM
listing and also at the left of the screen heading. The soft keys
revert to system parameter keys.
•
If the polarity setting is being changed, the new selection is shown against the
Tx
POLARITY
listing and the soft keys revert to system parameter keys.
•
If the control channel setting is being changed, enter the required value using the data
input keys and then press the [ENTER] data key or the
[control channel]
key.
The system parameters that you can modify are described below. Default values are shown in
Chapter 1, General Information, under the heading
System parameter settings.
SYSTEM TYPE
There are four different system settings which can be selected from within the
SYSTEMS
PARAMETERS
menu. The operating channels/frequencies, the channel frequency spacing and the
duplex offset between transmit and receive channels of each system are allocated by the
appropriate authority.
The provision of four EDACS system settings, with an edit facility, allows access to these
parameters. Once set up, each system setting remains available for future use. The RF channels
and frequencies used for testing are defined within spot channels.