User's Guide

Chapter 5: Setting
ZoneDAS User Guide Page | 36
The following table describes the labels on the BU Settings screen.
Table 12 Setting > BU Settings
LABEL DESCRIPTION
Left Column Labels
Band
This field displays the frequency band used by the RF module, as detected by the
BU.
Cellular
Select the mobile technology (as supported by the BTS) used by this RF module for
connection. Choose from 2G/3G/4G. If the information cannot be obtained, then
choose Auto.
Green Power Down
This is the power saving mode offered by ZoneDAS. It enables an RF channel to “go
to sleep” if the channel has received no input signal for a time. The default of 0
indicates that the function is disabled. To enable the function, enter a positive
integer. This will be the number of hours the system would wait under no signal
conditions before switching the channel to power-saving mode. If a signal appears
while a channel is under Green Power Down, the system will power the channel
back up again.
DL Center Frequency
Enter the “center frequency” of the frequency band used by this RF module for
downlink transmission. For example, if we want the module to use operate within a
20 MHz band from 1830 MHz to 1850 MHz, the middle point between these figures is
1840, and that would be the “center frequency” one should enter.
UL Center Frequency
Here the system displays the center frequency of the frequency band used by this RF
module for uplink transmission. The system calculates this value based on all the
other parameters it has obtained, so the user does not need to enter it directly.
DL Actual Power
This displays the maximum signal strength that has actually been received by the RF
module from the operator’s BTS (Base Transceiver Station).
UL/DL System Gain
UL/DL System Gain is the overall ZoneDAS gain (BU and RU), and is calculated as
follows:
• UL (Uplink) System Gain = BU-RF port's output power - RU-RF's input power.
• DL (Downlink) System Gain = RU-RF port's output power - BU-RF's input
power.
Status This row shows the current connection status for each of the four RF modules.
• Normal: Indicates that the inserted RF module is working normally.
• Alarm: Indicates an alarm is on. Instead of displaying “Alarm”, the system will
directly display the alarm code. The user may go to the Fault > Active Alarms
to see more details about the problem.
Buttons
Apply
Click
Apply
to save your changes to the BU’s run-time memory. The BU, by default
does not keep each session’s changes, so use the Save button on the title bar to
save your changes to the non-volatile memory when you are done configuring.
Cancel
Click
Cancel
to lose all changes made after last clicking
Apply
. The screen will
refresh from the BU's run-time memory.