User's Manual

Uniwave Initial System Setup

User Manual

to a Downstream Primary Hub. The System Setup screen shows a table entitled Downstream PH

Configuration, where the UL AGC Threshold is configured. Similar to the settings for a Remote Unit,

the level is in absolute power (dBm). Typically this is set to -20dBm.

Signal limiting will occur until the available attenuation in the Transport Module is exhausted (31dB

range).

10.3.5 Rack-Mount Power Supply Unit Configuration

Zinwave’s Rack Mount PSU (RM-PSU) is used to power Remote Units directly-connected to the primary

Hub, that don’t have an accessible Secondary Hub power port. This section allows the user to configure

a Zinwave RM-PSU that has been connected to a USB port on the Primary Hub. Clicking on the green

icons for each power port and then clicking Apply will configure the power state of the power ports.

10.3.6 Secondary Hub Configuration and Controls

The Secondary Hub Configuration section allows the user to label Secondary Hubs. It is necessary to

click "Validate Settings" and “Apply Settings” to save the changed configuration (Clicking “Apply

Settings” results in the System Status page opening).

The Secondary Hub Controls section allows the user to individually enable/disable Secondary Hub

optical and power ports by clicking the relevant green (enabled) or red (disabled) icon. Clicking the

“Apply” button at the bottom right of the section saves these settings (resulting in the System Status

page opening).

Note that after a system restart, all SH optical and power ports will always be re-enabled.

10.3.7 Remote Unit Configuration

This section allows the user to set a Remote Unit Downlink AGC Mode based on the application

limitation (FCC/Canada and CE territories have different specifications). There is also a “no AGC” mode

that is not recommended for use as it provides no self-protection against over-driving the RU downlink.

In countries where FCC regulations apply, the Downlink Power threshold is 2dBm higher than that

permitted for CE regulations.

The DL Power for each Remote Unit tells the system how much composite transmit power is required

from the Remote Unit for all of the services combined together. The weighting of each service depends

on the Calculated Relative Power Level (dB) setting on each Service Module, and which of the Matrix

paths has been enabled. The system uses these input parameters to configure the gains of each path

in the downlink.

The DAS automatically configures the Uplink gain for each RU to match its Downlink gain, plus any

Uplink/Downlink Balance selected at the Service Modules and Transport Modules.

Each Remote Unit needs to protect the system from very high uplink signal levels, to avoid blocking out

weaker uplink signals on the other paths. The Uplink AGC Threshold is specified for each remote unit

as the expected maximum received power at this Remote Unit location. Commonly the threshold is set

to mitigate against interference from walkie-talkie and WLAN devices, while permitting harmless

background signals to co-exist.

The uplink power detector in each Remote Unit reduces the RU gain as soon as the detected power

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