User's Manual

AXELL 3307D REPEATER
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd 27
Note: Be sure to click Send with each change.
3. Set the System Level parameters:
• Verify that the RF Transmission Enable parameter is checked.
• Set the Max Composite DL Output Power according to your site requirements and
click Send. The Measured Composite DL Output Power is displayed in the adjacent
field.
If the composite output power exceeds the defined value, the Smart ALC feature begins
working.
• Set the Max Composite UL Output Power according to your site requirements.
Additional parameters (not required for initial setup) are:
• Oscillation Prevention Enable - Enables oscillation detection mechanism that
maintains repeater functionality.
• Temperature - Displays Repeater ambient temperature.
• DL Output Threshold Delta (dB) - the delta from the set Composite Output Power,
below which the alarm 'Donor power is too low' is activated.
For example, if the DL Output Threshold value is set to 8dB, when the Measured
Composite DL output power is 8dB less than the set Composite Output Power, an alarm
is generated.
• Meas. Composite DL Output Power – displays the currently measured output signal
level.
4. To configure each sub-band:
• Checkmark Enable. The configuration parameters in that row will be available.
• In the Downlink area, set the Start and Stop DL Frequency (MHz). (The Uplink Start
and Stop frequencies will be automatically allocated.)
The defined BW will be displayed in the BW KHz column (to the left of the Start
Frequency).
Be sure to choose Start/Stop values that provide any of the following bandwidths:
1.4MHz, 3MHz, 5MHz, 10MHz or 15MHz.
• Set the (Downlink) Max Gain as follows: by default, the MAX Gain (DL) parameter
is set to its highest level (82dB). Change the Channel Max Gain (DL) according to
the measured/calculated input power and isolation measurements.
The recommended Maximum Gain setting is approximately 15 dB less than the isolation
between the service and donor antennas.
5. If the site NOISE LEVEL is high enough to cause interference, adjust the noise level as follows:
• Adjust the Gain Delta parameter – this sets the delta between the uplink and
downlink gain (so the uplink gain is relatively lower than the downlink gain.
• Click Send. The defined sub-band will appear in the display in the appropriate area:
Lower A,B,C (left side) or upper C (right side).
• Repeat the procedure until the desired coverage is achieved.