IM609873-1 Rev. 01
07/11/05
Handling the
SelectaCell
®
1. Use ESD precautions when dealing with the modules within the SelectaCell™ so that units are not
damaged.
2. Opening the unit voids warranty.
3. Disconnecting any component within the SelectaCell™ when powered can damage or destroy the
equipment and will void the warranty.
1.0 Description
The SelectaCell® repeater, is a PCS band, band selective bi-directional amplifier with integrated donor
and server antennas. The unit is designed to provide enhanced RF coverage for wireless systems in
small facilities. Usage includes providing coverage in retail stores, offices, warehouses, restaurants,
homes, etc.
The SelectaCell®
supports all 1900 MHz system protocols including CDMA, GSM/PCS1900 and
TDMA and a single model will cover PCS licensed 5MHz or 15MHz bands/sub-bands A through F.
The SelectaCell®
features easy set-up, lightweight, compact enclosure with internal antennas, local
alarming, excellent electrical specifications, high reliability and cost effective pricing.
2.0 Functionality
The SelectaCell®
is capable of automatically adjusting its own signal gain levels up to the maximum
output power levels. SelectaCell®
detects the downlink output power and adjusts the level for +12
dBm EIRP composite output power and continues to monitor and reset the gain as required for proper
system performance. For example, when CDMA protocol is being amplified, there could be an error
in set up initially resulting from only pilot sync, and paging Walsh codes being present on the RF
carrier. The SelectaCell® will reduce the system gain until no signal is received that will exceed the
output power setting. This prevents the SelectaCell® from setting up to a higher power level than
actually desired if all of the Walsh codes were present. The gain does not continually change to
maintain an output power of 0 dBm (AGC) since this would defeat the benefits of power control in the
service providers system.
3.0 Alarming
Alarming monitoring is accomplished in the SelectaCell® by the microprocessor, which will detect a
failure in gain or a system oscillation. This is indicated to the user by the LCD display and by
application software via the USB interface.
Summary of Contents for SelectaCell-19S
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