Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3-
190
-
9180
;
INSTALLATION STEPS
1. Install all antennas and connect them to the BDA inputs.
2. Open the access windows at the sides of the BDA so that the variable attenuator is reached
and the LED is visible.
3. Turn the AGC On. This AGC limits the output power of the BDA. The AGC on the Downlink
path guarantees constant downlink power when and if the Donor power changes.
4. Set downlink gain to minimum; uplink gain to minimum (by increasing the attenuation).
5. Increase the downlink channel gain (by decreasing the attenuation) till the LED turns from off
to on. This is the best gain setting giving highest usable power.
6. The LED on the downlink power amplifier will illuminate if adequate donor power has
reached the BDA. If the donor power is low the LED will not lit and the BDA usable power is
not used efficiently.
7. Set the uplink gain to the same as the downlink gain.
8. Check that the uplink LED on the BDA monitor does not lit permanently. This LED would lit
permanently If the isolation between antennas is low (BDA oscillations) or the BDA is faulty.
9. If the uplink LED light permanently then:
•
Disconnect one of the cables from the BDA connectors and connect a load at the
connectors.
•
If the LED on this amplifier illuminates permanently then the BDA is faulty
(oscillating) and needs replacing.
•
If the LEDs stops illuminating then the isolation between the donor and remote
antennas is low. Either improve the isolation (e.g. increase separation) or reduce
BDA gain.
•
To reduce gain, reconnect the antenna cables. Reduce the gain at both uplink and
downlink path until this LED stops illuminating. Reduce the gain further by 10 dB.
This is the maximum usable gain.
;
Web site-
www.dekolink.com
r
ev 5 11/
02
page 7 of 12
