INSTRUCTION MANUAL FOR 48660 SINGLE CHANNEL CDMA PCS BI-DIRECTIONAL AMPLIFIER 2 Ryan Road, Marlboro, New Jersey 07746-1899 Tel:1-908-462-1880 Fax: (908) 462-6919 Part Number: J24004 Drawing Control: JD16049
Disclaimer All information and statements contained herein are accurate to the best of the knowledge of Celwave and RFS, but neither Celwave or RFS make any warranty with respect thereto, including without limitation any results which may be obtained from the products described herein or the infringement by such products of any proprietary rights of any persons. Use or application of such information or statements is at the user’s sole risk, without any liability on the part of Celwave or RFS.
TABLE OF CONTENTS PRODUCT OVERVIEW and GENERAL INFORMATION ----------------------------------------------1 PERFORMANCE BLOCK DIAGRAM FCC TYPE ACCEPTANCE OUTLINE DRAWING -------------------------------------------------------------------------------------------2 GENERAL SPECIFICATIONS---------------------------------------------------------------------------------3 OVERVALL THEORY OF OPERATION--------------------------------------------------------------------3 DOWNLINK OUTPUT POWER CHANNEL AND ATTENUATI
TABLE OF CONTENTS (Continued) SET UP AND INSTALLATION CONSIDERATIONS -------------------------------------------------- 10 ANTENNA ISOLATION -------------------------------------------------------------------------------------- 10 DIAGNOSTICS AND TROUBLESHOOTING ----------------------------------------------------------- 11 Front Panel LEDs Gain or Coverage Reduction Excessive Intermodulation or Spurious ORDERING AND RETURNING FOR REPAIR ---------------------------------------------------------- 12 WAR
PRODUCT OVERVIEW and GENERAL INFORMATION The 48660 Bi-directional Amplifier is a single channel CDMA PCS repeater. It is designed to amplify just one CDMA channel while rejecting all others. The 48660 is tunable over the entire PCS band and provides approximately 65 dB of gain to the selected channel. The unit is designed to enhance PCS coverage in buildings, basements, parking garages and other RF shielded environments. The unit is wall mountable and requires no periodic maintenance.
FCC Compliance No: (Application in process.
OUTLINE DRAWING Intelli 3 Part Number: J24004 Drawing Control: JD16049
GENERAL SPECIFICATIONS Specifications may change without notice. All specifications stated as typical unless otherwise noted. Frequency Typical Pass Band at 3 dB down Typical Pass Band at 30 dB down ( +22 dB Gain) Gain at Min Attenuation -Typ. Gain Range, Manual Attenuator Pass Band Ripple - Typ. Noise Figure - Typ.
OUTPUT POWER After all of the amplification and filtering is completed, a sample of the signal is measured and the output power is predicted. This information is fed back to the Digital section and a Power Control voltage is generated and fed to the input section attenuators to reduce the power if needed. This comprises the power control loop. Its response is slow compared to the CDMA closed loop power control, so it will not interfere with the system.
Upper MSBs A7 A6 0 0 0 1 1 0 1 1 DEC NUM A5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 A4 A3 A2 A1 A0 CH # 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0
DEC NUM A5 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A4 A3 A2 A1 A0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 CH # FREQ DL FREQ UL N (MHZ) (MHZ) 1100 1985.00 1905.00 1125 1986.25 1906.
POWER CONTROL AND INTERMODULATION Power control circuitry is provided to prevent excess output power and, thus, excess 3rd order intermodulation distortion (IMD). IMD levels are a function of the output power and the IP3 of the amplifier stages [IM = 3(Po) 2(IP3)]. The FCC regulations specify the maximum IMD levels at -13 dBm. Each BDA is tested and set for maximum IMD levels of -13 dBm in either RF link. The resultant power setting is the "Usable Output Power" in the general specifications.
discontinue service. When practical, they will notify you in advance of this disconnection. If advance notice is not feasible, you will be notified as soon as possible. When you are notified, you will be given the opportunity to correct the problem and be informed of your right to file a complaint with the FCC. Contact your telephone company if you have any questions about your phone line.
Testing at Celwave has shown that two, 12 V batteries in series, rated at 7 AH will power the 48660 for greater than 30 minutes. ENVIRONMENTAL CONSIDERATIONS Operating Temperature: -30o C to +50o C Operation over 60o C voids warranty. Operation at case temperatures over 50o C should be limited to 200 hours per year. Humidity: Non-condensing up to 95% relative for 0o C to 50o C within full specified data. PERIODIC MAINTENANCE There is little maintenance in the 48660 Intelli BDA.
SET UP AND INSTALLATION CONSIDERATIONS BEFORE APPLYING AC POWER: Make sure antennas are connected or the RF terminals are terminated! Make sure amplifier is vertically mounted! Antenna isolation must be 80 dB or greater to prevent oscillation! Check the incoming spectrum to assure that no signals in the pass band are greater then -15 dBm! ANTENNA ISOLATION Proper implementation of the antennas is absolutely crucial to the repeater system.
DIAGNOSTICS and TROUBLESHOOTING GUIDE OPENING THE AMPLIFIER ELECTRONICS COMPARTMENT WILL NEGATE WARRANTY. The diagnostics of the 48660 Intelli BDA can assist in troubleshooting an installation problem or determining if the BDA needs to be sent in for repair. In some situations, the shroud of the 48660 Intelli BDA may need to be opened to allow access to the Programming DIP Switches and/or DC Power fuse.
Another possible source of a large spurious signal is amplifier oscillation. The amplifiers will only oscillate if the antenna isolation is insufficient. It is also possible that "dirty" connections could be causing excessive noise output. This would be particularly evident while wiggling cables and connectors. ORDERING & RETURNING FOR REPAIR Contact Celwave Order Entry at 1-800-321-4700 for a customer service request number (CSR).
2 Ryan Road, Marlboro, New Jersey 07746-1899 Tel:1-908-462-1880 Fax: (908) 462-6919 Part Number: J24004 Drawing Control: JD16049
