Dekolink Wireless CBDAPS91W80 Bi-Directional Amplifier User Manual INSTALLATION
Dekolink Wireless Ltd Bi-Directional Amplifier INSTALLATION
Users Manual
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| Document ID | 333563 |
| Application ID | 1X3rM9bV6RN3vEcwiPSoNA== |
| Document Description | Users Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 52.01kB (650122 bits) |
| Date Submitted | 2003-06-19 00:00:00 |
| Date Available | 2003-06-19 00:00:00 |
| Creation Date | 2003-05-19 08:28:09 |
| Producing Software | Acrobat Distiller 5.0 (Windows) |
| Document Lastmod | 2003-05-19 08:29:16 |
| Document Title | INSTALLATION & |
| Document Creator | Acrobat PDFMaker 5.0 for Word |
| Document Author: | Elisra |
INSTALLATION AND OPERATING INSTRUCTIONS FOR MW-CBDA SERIES 1W-80-A COMPACT BI-DIRECTIONAL AMPLIFIERS Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 1 of 12 INSTALLATION & OPERATING INSTRUCTIONS CBDA 1W-80-A COMPACT BI-DIRECTIONAL AMPLIFIERS TABLE OF CONTENTS PARAGRAPH PAGE No BDA OVERVIEW BLOCK DIAGRAM DESCRIPTION STEP ATTENUATOR & RF GAIN & SETTING AGC FUNCTION AGC & GAIN CONTROLS BDA INSTALLATION BASE/DONOR ANTENNA INSTALLATION REMOTE/MOBILE ANTENNA INSTALLATION ANTENNA ISOLATION INSTALLATION STEPS DIAGNOSTICS GUIDE ELECTRICAL SPECIFICATIONS SYSTEM FREQUENCY RANGE ENVIRONMENTAL CONDITIONS 10 MECHANICAL SPECIFICATIONS 10 RF EXPOSURE WARNING 10 LIMITED WARRANTY 12 LIST OF DRAWINGS DRAWING PAGE No BDA RF BLOCK DIAGRAM AGC AMPLIFIER MECHANICAL OUTLINE 11 Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 2 of 12 BDA OVERVIEW: The Compact Bi-Directional Amplifier (CBDA) assembly provides an exceptional repeater/booster performances to extend the coverage area of radio communications in buildings and RF shielded environments. Features such as high linearity power amplifiers are contributing for the overall improved system linearity performances. The unit is based on a duplexed path configuration, having sharp out of band attenuation for improved isolation between the receiving and transmitting paths. BLOCK DIAGRAM DESCRIPTION: The CBDA Downlink path receives the RF signals from base station amplifies them and transmits them to the subscriber. The BDA Uplink path receives the RF signals from the subscriber amplifies them and transmits them to the base station. Two duplexers frequency separate the signals to the proper amplifying path and isolate the two signals. For each path two amplifiers do the path signal amplification; a low noise amplifier (LNA) and a high power amplifier. The low noise amplifier has a 30 dB step attenuator at its output. The step attenuator is used to set the BDA repeater gain. The power amplifiers in the BDA have an AGC option switch. When switched on, the AGC circuit limits the amplifier output power. The AGC circuit senses the output power and introduces more attenuation, when the output power exceeds the preset level. This way the gain of the amplifier is reduced, its output power is limited and the intermodulations products are kept below the desired level. The AGC amplifier has a Power LED lamp that illuminates when the output power has reached the preset power limit. Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 3 of 12 TO BASE TO MOBILE Power Attenuator PA Monitor LNA Duplexer Downlink Power Monitor PA AGC AGC Duplexer Attenuator LNA Uplink BDA RF BLOCK DIAGRAM Step Attenuator & RF Gain Setting For proper operation of the BDA; the isolation between the base station antenna and the mobile antenna should exceed the BDA gain by at least 12 dB. If the BDA gain were higher than the isolation between the antennas, oscillation would start and would saturate the amplifier. Isolation few dB higher than the BDA gain cannot start oscillations but would cause gain ripple in the band. The step attenuator on the low noise amplifier can reduce the BDA gain. The BDA gain can be stepped down by the amount indicated on the step attenuator. Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 4 of 12 AGC FUNCTION The BDA has AGC function on both paths that serve to prevent the saturation of the power amplifier. Their amplifier has a directional coupler and a detector at the output of the high power amplifier to monitor the output power. When a high signal is received the automatic level control detects the amplitude and sends a feedback signal to a voltage variable attenuator which attenuates the signal level so that the output power of the amplifier does not exceed the preset limit. The LED on the amplifier illuminates when the power out the amplifier is within the set limit (when the AGC is On and when the AGC is OFF). The switch on the RF amplifier enables the AGC function. If the AGC is disabled then the amplifier gives maximum gain. AGC AND GAIN CONTROLS The AGC and GAIN SETTING functions for the up link path are reached by opening the small slide door located on the CBDA left side, adjacent to the BASE antenna port. For the down link path the door is on the right side adjacent to the MOBILE antenna port RF Power LED: The LED illuminates when the output power exceeds the AGC Set . AGC ON / OFF Switch: When OFF the amplifier works with its highest gain (AGC Function OFF). When set to ON (AGC Function ON) the amplifier power output cannot exceed the set limit. Gain setting: By using the rotary knob , the attenuation can be adjusted in 2 dB steps. Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 5 of 12 BDA INSTALLATION Install the BDA Repeater in a shielded, ventilated and easy to reach area. Use low loss cables to connect antennas to the BDA. Install the BDA close to the service area to improve output power and noise figure. Mount the BDA with RF connecters pointing down. The RF connection is made via two type “N” female connectors. The RF connector labeled “Base” must be connected to the antenna; usually a Yagi; pointing to the base station. The RF connection labeled “Mobile” must be connected to the antenna pointing into the area to be covered by the BDA. BASE / DONOR ANTENNA INSTALLATION Typically this is a directional antenna such as Yagi or Dish antenna of 10 to 15 dB gain. This antenna is pointed to the base station to get maximum input power. This antenna should be in line of sight with the base site. Raise this antenna higher if no line of sight is achieved. The required Base signals should be the dominant signals; at least 6 dB higher power than other signals. Choose the antenna site to get the maximum isolation from the remote (mobile serving) antenna. REMOTE / MOBILE ANTENNA INSTALLATION The remote antenna is an Omni antenna or a directional antenna according to the coverage requirements. For indoor applications covering a large building, the RF signals are split using power dividers and distributed to many antennas each covering a floor or a small area. ANTENNA ISOLATION For proper operation the isolation between these two antennas must be at least 12 dB higher than the BDA gain. Lower isolation would lead to high in-band ripple. Oscillations will build up when the isolation is lower than BDA gain. The isolation between the antennas is critical for high gain outdoor repeaters. To measure the isolation; inject a known signal into one antenna and measure the power at the other antenna. This should be done across the frequency range of both uplink and downlink bands. Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 6 of 12 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. Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 7 of 12 DIAGNOSTICS GUIDE The BDA provides long term, carefree operation and requires no periodic maintenance. This section covers possible problems related to the installation environment. RF Faults and RF Power Amplifiers LED Indications: The LEDs on the power amplifier are set to turn on when the transmitted power has reached or exceeded the specified composite power. Normally the LED at the downlink power amplifier should be on indicating good forward power transmission. The LED on the uplink power amplifier turns on only when a near by mobile is transmitting. Indication Cause Action Downlink LED does Indicates low RF power at Check base antenna connection not light downlink path Check antenna alignment to base. Increase BDA RFgain. Downlink LED lights Indicates good power Turn AGC on, or reduce gain so that LED (This is not a fault) transmission in the downlink just turns from off to on. amplifier. Set the same gain for the uplink channel Make sure the amplifier is not overloaded Uplink LED lights all Bad antenna isolation Improve the isolation between the the time causing the repeater system antennas or reduce RF gain. To verify to oscillate disconnect one RF port; LED should turn off Uplink LED lights all Faulty system. Can be System fault. To verify disconnect one RF the time diplexer or power amplifier port to verify. If LED remains on then fault system is faulty. Excessive Amplifier oscillation caused Improve the isolation between the intermodulation or by insufficient isolation antennas or reduce RF gain. Excessive noise in High input power causing Turn AGC on, or reduce gain so that LED downlink amplifier overload just turns from off to on. Set the same spurious gain for the uplink channel Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 8 of 12 ELECTRICAL SPECIFICATIONS: Frequency Range (MHz) SEE TABLE Passband Gain @Min attenuation 80 dB nominal Passband Ripple ± 1.5 dB typical Manual Attenuation Range 0 to 30 dB in 2 dB step Noise Figure 6.0 dB max Impedance level 50 ohms V.S.W.R In/Out 1.5 : 1 max AGC Selection By ON/OFF Switch AGC Attenuation Range 25 dB typical AGC LED Indication LED turn ON when power reaches AGC Set Power Level. (both at On and Off positions). AGC Factory Power Preset +24 dBm nom. Amplifier Power Output 1 Watts @1 dB Compression 3rd Order output Intercept point +45 dBm typical Power Supply 110/220V AC, 50-60 Hz /1A System Frequency Range SYSTEM TYPE E-SMR (iDEN) SMR 800-Public Safety SMR - 900 MHz GSM TDMA Band B CDMA/TDMA/N-AMPS MODEL No MW-CBDA-ESMR-1W80A MW-CBDA-SMR-1W80A-PS8 MW-CBDA-SMR-1W80A-PS9 MW-CBDA-GSM-1W80A MW-CBDA-CELLB-1W80A MW-CBDA-AB-1W80A DOWNLINK 851-866 851-869 935-941 935-960 880-894 870-894 Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com UPLINK 806-821 806-824 892-902 890-915 835-849 825-849 page 9 of 12 ENVIRONMENTAL CONDITIONS: Operating temperature - 30°C to + 50°C Storage temperature - 50°C to + 90°C MECHANICAL SPECIFICATIONS: Size mm(Inch) RF Connectors Weight 265(10.4) x 250(9.8) x140(5.5) N-type Female 8 kg. Approx RF EXPOSURE WARNING In order to satisfy the FCC RF exposure requirements, you must ensure that the installation complies with the following: One antenna is connected via cable that has typical 1~10 dB attenuation (depends on the length of the cable) to the BDA BASE port. This antenna is installed outdoor and has very sharp beam (Yagi type or similar) pointed to the donor (BTS). This type of antenna has about 10 dBi gain. Typical specifications: gain: 8 dBd (=10.1 dBi), VSWR: better than 1.5:1 , Impedance: 50 ohm. The outdoor antenna must be installed to provide a minimum separation distance of 0.3 m (30 cm) from persons within the area. The second antenna is connected via cable that has typical 1~10 dB attenuation (depends on the length of the cable) to the CBDA MOBILE port. This type of antenna is omnidirecttional (isotropic), or wide beam, with 0 to 2 dBi typical gain and is installed and distributes indoor (in buildings, tunnels, basements, park lots, shopping centers etc.). Typical specifications: gain: 2 dBi, VSWR: better than 2:1 , Impedance: 50 ohm. The indoor antenna must be installed to provide a minimum separation distance of 0.2 m (20 cm) from persons within the area. Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 10 of 12 MECHANICAL OUTLINE Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 11 of 12 DEKOLINK WIRELESS LIMITED WARRANTY Dekolink Wireless [Ltd.] (“Dekolink”), manufacturer of this product (the “Product”) warrants to the original purchaser (“Purchaser”) that the Product is free from defects in materials and workmanship for a term that ends on the earlier of twelve (12) months from the date of activation of the Product or fifteen (15) months from the date of shipment of the Product by Dekolink. The obligations of Dekolink under this warranty shall be limited solely to the repair or exchange or giving credit for, at the option of Dekolink, any Product that may prove defective in accordance with evidence satisfactory to Dekolink. Any repair or replacement of the Product by Dekolink shall not extend the original warranty period. This warranty is exclusive to the original Purchaser and is not assignable. This warranty applies only upon the condition that the Product has been installed, maintained and operated under conditions of normal use. The provisions of this warranty shall not apply if, in Dekolink’s judgment, the Product has been subject to misuse or neglect, damaged in an accident or by act of vandalism, or repaired or altered in any way that adversely affects its performance or reliability. To obtain warranty service, Purchaser may, upon the prior written authorization of Dekolink or its authorizerd service representative, return the defective Product to Dekolink’s authorized service center. All shipping and insurance charges are the sole responsibility of Purchaser and are not included in this warranty. Dekolink expressly excludes and disclaims all other warranties, including but not limited to any warranties of merchantability or fitness for a particular purpose. Dekolink shall in no event be liable for any special, indirect, incidental, consequential or punitive damages or for loss, damage, or expense, including loss of use, profits, revenue, or goodwill, directly or indirectly arising from purchaser’s use or inability to use the merchandise, or for loss or destruction of other property or from any other cause, even if Dekolink. has been advised of the possibility of such damage. some states do not allow the exclusion or limitation of incidental or consequential damages so these limitations may not apply under certain circumstances. The liability of Dekolink shall in no event exceed an amount equivalent to the purchase price paid by the purchaser for the defective product. This warranty shall not be extended, altered or varied except by a written instrument duly signed by Dekolink. Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510 Tel- 972-3-9180-180; Fax-972-3-9180-190; Email-marketing@dekolink.com; rev 5 11/02 Web site- www.dekolink.com page 12 of 12
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