ZinWave UNITIVITY 5000 User Manual page 78

UNItivity 5000
User Manual
level reaches the AGC threshold. There is no particular period that must expire before AGC is cleared,
rather, it is cleared as soon as the constantly-monitored power level drops below the threshold (minus
a 0.5dB hysteresis margin).
The Uplink AGC operating region continues through higher uplink signal levels, until the AGC/overload
attenuator in the Remote Unit has run out of range. This is typically 5 to 20 dB of active AGC range.
At that point the uplink will be switched off to protect the system.
The Uplink AGC threshold for each RU does not directly affect the uplink gain, though in some cases
where the target Uplink gains and RU AGC levels are high, the system may warn that the uplink gain
needs to be limited when a new configuration is Validated/Applied, to avoid over-driving the Service
Module outputs.
The user can Enable or Disable the power amplifier and the LNA in the Remote Unit (Radio State).
All Remote Units can be conveniently enabled/disabled and set to the same default settings by selecting
from the relevant drop-down at the top of the list of RUs, and clicking the adjacent "Set" button.
10.3.7.1 Higher-Power Remote Unit (305-1007)
The 305-1007 Higher-Power Remote Unit supersedes the 305-0007 Remote Unit, although both types
can be used in the same system. The 305-1007 can be identified from a 12-digit serial number starting
33xxxxnnnnnn, whereas the 305-0007 has a serial number starting 66xxxxnnnnnn.
Internally, the 305-0007 has an RF architecture that delivers a wide, flat frequency response. Although
this is conceptually simpler to understand and use, it does not take into account the differing power
levels required by different types of carrier signal.
The 305-1007 has a sloped frequency response, dynamically configured by the system. It is used to
deliver a higher power to the higher-frequency services that suffer poorer coverage due to the shorter
wavelength. Lower-frequency services are not so resource-hungry, and in fact it is better for the DAS
to transmit at a lower power level in order to minimize any impact of wideband noise on neighboring
non-DAS systems.
10
0
-10
-20
-30
-40
-50
-60
0.00E+00 5.00E+08
The settings applied from the System Setup screen are literally applied for any services above 1575
MHz. Any services that lie below 1575 MHz will experience approximately 3 dB lower Downlink and
Uplink gain.
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Limit MAX
Normalized Response
Limit MIN
1.00E+09 1.50E+09
Initial System Setup
2.00E+09 2.50E+09 3.00E+09
10-6