Link Quality; Ru Dc Power; Ru Calculations; Rf System Check - ZinWave UNITIVITY 5000 User Manual

UNItivity 5000
User Manual
10.9.3

Link Quality

This is a single page View of the fiber optic link quality for the DAS. Uplink and Downlink paths are
shown for all optical links in the system. Measured optical losses are displayed. If the RF Calibration
function on the System Maintenance page has been executed, then applied RF calibration values are
also displayed.
10.9.4

RU DC Power

This is a single page View showing the DC power parameters for all Remote Units in the DAS. The
table reports the input voltage, input current and power dissipation measured by each RU. The power
dissipation of each DC supply cable is also calculated if the SH or RM-PSU voltage is available for that
particular RU. PSU Port Association is displayed, an output from performing the RF System Check. It
maps the power ports on the Secondary Hubs with the Remote Units they are connected to.
10.9.5

RU Calculations

This single page View displays the applied RF settings and calculated gain for all the Remote Units in
the DAS, from each Service Module input that has been enabled. It is updated by clicking Validate
Settings and Apply Settings on the System Setup page.
10.9.6

RF System Check

This view displays a number of RF parameters for each Remote Unit in the system :- the health of the
Power Amplifier in the Remote Units (PA Health); background noise level (Background Level); isolation
between Tx and Rx antennas for each Remote Unit (Tx/Rx Antenna Isolation); and cross-coupling
(Cross-Coupling Tx/Rx) between the transmitting Remote Unit and receiving ports of the other Remote
Units in the system. Note that strong background RF signals can potentially cause false readings with
the cross-coupling test.
PA Health is highlighted
and the expected level from measuring the input power and
power. A fault may actually be due to mismatch at the Tx port of the RU, rather than the PA.
If the background RF pickup is > -30dBm when the DAS is off it shows amber; if it is > -20dBm it shows
red. The test for each RU includes an "off" measurement and 3 test frequencies, so for a test on each
transmitting RU there are many "off" measurements measured on all of the Rus. This is presented as
a range of values, giving an indication that the background pickup might be "bursty".
If Tx-Rx isolation is in the range -45 to -40dB, it shows amber; if it is more coupling than that it shows
red; if the background RF pickup was strong enough to compromise the measurement, it also shows
and the result has ">=" added to the result text. It means that the Tx-Rx isolation measurement
as amber
had a smaller received level than the Rx level when the DAS was off.
If cross-coupling is in the range -50 to -45dB it is shown as amber; stronger than -45dB is it red. Strong
coupling from one RU's Tx to another RU's Rx is not to be expected.
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amber when there is 8dB or greater difference between the Tx output power
Initial System Setup
red if there is no measurable output
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