Operating Instructions
Table Of Contents
- FOR
- CELLULAR A+B
- Fiber-optic REPEATER SYSTEM
- 50W WITH DIVERSITY
- _
- The FBDA is installed near the area to be covered and is connected to the mobile antenna. A Fiberoptic transceiver converts the Downlink optical signals to RF signals and the uplink RF signals to optical signals. A duplexer in the FBDA separates the upli
- of the same antenna for receiving and transmitting. The duplexer has sharp out of band attenuation for better isolation between the receiving and
- transmitting paths and for reduction of out of band interfering signals. A high power amplifier in the downlink path produces high RF power to the antenna. A LNA (low noise amplifier) is used to drive the uplink signals from the antenna to the Fiberopt
- For diversity applications the uplink path is duplicated using separate antenna, filter, LNA and Fiberoptic transmitter.
- Please refer to installation and operation instructions for FBDA-800AB-50W-DIV
- Fig. 3: FBIU MECHANICAL LAYOUT
Dekolink WIRELESS Ltd.
16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510
Tel- 972-3-9180-180 Fax-972-3- 190-9180
e-mail: marketing@decolink.com
web www.decolink.com
4. INSTALLATION PROCEDURE
4.1 Fiber Optic Link Assembly:(both FBDA and FBIU)
4.1.1 Insert main optical fiber trough the Fiber In/out hole on the FBDA
panel and connect it to the Optical In/out connector on the Fiberoptic
transceiver. On the FBIU connect the optical fiber to the Optical In/out
connector on the Fiberoptic transceiver.
4.1.2 Insert diversity optial fiber trough the Fiber in/out hole on the FBDA
panel and connect it to the Optical out connector on the Fiberoptic
transmitter. On the FBIU connect the diversity optical fiber to the Optical In
connector on the Fiberoptic receiver.
4.2 Downlink calibration:
4.2.1 Connect Spectrum analyzer through High Power Attenuator of 40 dB to
the Antenna port of the FBDA.
4.2.2 Inject (+20) dBm signal at 880 MHz from the FBIU Tx antenna through
the optical link.
4.2.3 Adjust Gain on the Fiberoptic transceiver front panel in the FBDA so
that RF power at the output is +30dBm.
4.3 Uplink calibration:(both main and diversity path)
4.3.1 Connect Spectrum analyzer to the Rx port of the FBIU.
4.3.2 Inject (–60) dBm signal at 835 MHz from the antenna port on the FBDA
side through the optical link.
4.3.3 Adjust Gain on the Fiberoptic transceiver in the FBIU so that RF power
at the output is -44 dBm.
4.3.4 Repeat the above with the diversity path.
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FO-800AB-50W SYS.doc