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Chapter 2: First Time Installation
ZoneDAS User Guide
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effectively the same as GMT. If the area also uses Daylight Saving(s) Time, please click the
Enable
checkbox under
Daylight Saving Time
and set the correct values for
Start Time
and
End Time
. The former indicates when Daylight Saving(s) Time starts every year (in the
Spring); the latter indicates when it ends (in the Fall).
It is possible to set / maintain the system time automatically via an SNTP Time Server. That is
not required at this point, but you may refer to
Chapter 7.4 Time Settings Screen
this can be done.
2.3.3 Ensure that RF Inputs are Within Range (0 ~ 24 dBm)
Having set the
System Time
, one can move on to configuring the system’s RF inputs. These
come from two sources: directly from the Operator through a BTS / small cell, or off-air
through an Off-Air Kit / SymmRepeater. Either way, the signal will come through a coaxial
RF cable and ZoneDAS will treat all signal the same way.
The important thing is to ensure that the signal strength of each RF input falls within the
system’s operating range of 0 to 24 dBm. ZoneDAS operates optimally when each RF input
signal is between 0 and 15 dBm. It will continue to work properly from 15 to 24 dBm, but
anything less than 0 dBm is too weak for the system to work with and any level over 24 dBm
is too strong for the electronics. If an input signal falls between 24 and 30 dBm, the system
will activate its Protection Mode and shut down all operation for that RF channel (and
only
that channel). Input signal stronger than 30 dBm may cause permanent system damage!
The easiest way to see if an RF input is within range is to look at the
Home screen
, at the BU.
There, under each RF port, will be an “X”, “
”, or “!” mark, like this:
Please note that Module A is the one on the left-most side. Module B is the one to its right,
Module C is the next one on the right, and Module D is the right most module. The
frequency band used by each module is clearly marked on its face plate.
If the strength of RF input for a module falls within the 0 to 15 dBm optimum range, there will
be a check mark (
) under that RF port. If the RF signal is on the strong side, between 15
and 24 dBm, there will be an exclamation mark (
!
) to warn of sub-optimal performance. If
the RF signal is too weak, below 0 dBm, there will be an X mark to show “no signal”.
Please ensure that all connected inputs are marked with check marks (
). If not, please
consult the signal source provider, such as the telecom operator, and resolve the issue.
2.3.4 Configure BU Parameters
Once all RF signal sources are verified to be within range, it is time to configure the BU’s
parameters. Specifically, this means RF parameters. If this installation is on behalf of a
telecom operator, simply upload their ready-made config file onto the BU, using the steps
covered in the next section. If not, the following information is required for each RF signal
source:
1.
The Frequency Band used by the RF signal (e.g. Band 1, Band 3, Band 7, Band 41,
and so forth).
2.
Cellular technology used (choose
2G, 3G, or 4G LTE
).
This matters, because it affects the system’s internal parameter settings and tuning
algorithms. However, if the information is unknown, a selection called
Auto
is also
available.