Andrew OneBase Cell Extender Operation Instructions Manual

Proprietary – Use pursuant to Company Instruction OneBase™ Cell Extender Model: OBE-DB-X Operation Instruction December 20, 2006 Version. 1.0 Reference Numbers: FCC ID: S8L-OBEMCPA IC:2237F-OBEMCPA

Proprietary – Use pursuant to Company Instruction Introduction: The OneBase™ Cell Extender subrack is a high-power, mixed-mode RF front-end equipment solution which provides signal amplification and conditioning for both uplink and downlink cellular base station signals. It is a highly modular design, consisting of a minimal set of unique field-replaceable units, capable of being configured and scaled for a variety of system level capacities and air interfaces including TDMA, GSM/EDGE, CDMA, WCDMA and analog air interfaces. System Specifications: System specifications for the OneBase™ Cell Extender Subrack are: Parameter Specification Frequency Bands 850 MHz Band Tx: 869-894 MHz 1900 MHz Band Tx: 1930-1990 MHz 25 MHz (29 MHz for -20dB bandwidth, nominal) Operation Bandwidth 60 MHz (70 MHz for -20dB bandwidth, nominal) Input / Output Impedances 50 Ohms Supply Voltage +21 VDC to +30 VDC Nominal Passband Gain (dB) 55 dB +/- 1 dB Power Amplifier Module Power Rating 135 Watts Subrack Capacity 4 MCPAs Total Rated Mean Output Power 426 Watts (+56.3 dBm) Supported Output Power (Typical) 40 Watts/carrier (WCDMA) 25 Watts/carrier (TDMA) 25 Watts/carrier (CDMA) 25 Watts/carrier (GSM/EDGE) DC current draw <140 Amps per Subrack In-Band emissions -13 dBm/MHz Receive Path Noise Figure 3.5 dB

Proprietary – Use pursuant to Company Instruction Functional Blocks: The OneBase™ Cell Extender subrack is comprised of the following functional blocks: − RFIM (Radio Frequency Interface Module): − MCPAs (Multi-carrier Power Amplifiers—850 MHz or 1900 MHz) − SCM (Switch Combiner Module) − Filter Module (850 MHz or 1900 MHz) − PDP (Power Distribution Panel) − Inputs and Outputs Inputs and Outputs: The amplifier is powered from a DC supply voltage which can range from 20VDC-to- 30VDC (with a nominal voltage of 27 VDC). The DC power is brought into the subrack at a terminal that is in the back of the subrack. The RF signal is brought into the RFIM, passes into the amplifers, then through the SCM which is blind-mate connected to the amplifiers, and finally into the Filter Modules and subsequent antenna ports.

Proprietary – Use pursuant to Company Instruction System Pictures: Front View Rear View

Proprietary – Use pursuant to Company Instruction Alarm System: Alarms and operating state are communicated to the BTS via connections to the “Alarm Terminal Block” at the back of the subrack. The terminal block is internally connected to dry-contact relays which are located in the MCPA subracks. ALARM CATEGORY SEVERITY Minor Conditions that do not immediately affect system operation, but lead to more serious problems if ignored. Major Conditions that directly affect amplifier operation (e.g. reduced gain), but allow the system to continue operating. Critical Conditions which result in sector shutdown, preventing any further cellular call traffic. MCPA LEDs MCPA LED Status Alarm Severity Possible Failure Modes Green: “ON” Yellow: ON” Red: “ON” Initial Power-up of MCPAs. NONE LEDs all “ON” simultaneously for about 2 seconds. Green: “ON” Normal Operation NONE Green: “ON” Yellow: ON” Minor 1. MCPA Fan(s) failure 2. MCPA high internal temperature (approximately between 80°C and 90°C). 3. MCPA values indicating: Poor Return Loss (3-8 dB) Yellow: ON” Major 1. RF disabled via MCPA panel switch or RFIM command 2. RF Overdrive (gain reduced) 3. DC voltage out of normal range Red: “ON” Critical 1. MCPA internal failure 2. RF Overdrive (> 10 dB) 3. MCPA high internal temperature (above approximately 90°C). 4. MCPA values indicating: Poor Return Loss (0-3 dB)