RF25DS-B20
USER MANUAL
Variable Band Repeater
B20 System
Page 1: ...RF25DS B20 USER MANUAL Variable Band Repeater B20 System ...
Page 2: ... Item Description 1 DC 5V 5VDC external power supply 2 BS Donor antenna port uplink and downlink signals to base station 3 Alarm Indicator and LCD Control pannel 4 MS Service antenna port uplink and downlink signals to mobiles The picture is only for reference please make the object as the standard 1 2 3 4 ...
Page 3: ... millimeters 1 Use percussion drill to make four holes on the wall following the pattern in the above diagram 2 Push the wallboard anchors to the holes 3 Hold the REPEATER and push against the wall Align the 4 holes on the REPEATER with the anchor holes 4 Drive two screws into the holes on the top line Do not fully tighten the screws ...
Page 4: ... Turn ON the REPEATER until the BS and MS Ports are Connected to Antenna or add load if no connected to Antenna Install the REPEATER Only in A Normal Indoor Environment The Dismantlement Modification or Use of Any Object or Device to Alter or Limit the Functionality Permanently or Temporarily of Any REPEATER Structure Are Prohibited Place donna Antenna and service Antenna in reverse and guarantee ...
Page 5: ...te without additional tool Signal strength indicator helps find donor signal source and set up the system in the field without additional equipment Uplink downlink frequency full range or custom bands Built in Saw filter provides high out of band rejection Built in switches and signal strength indicator allow find donor signal source and set up the system on site without additional equipment Exter...
Page 6: ...Ideally donor signal strength should have been measured prior to the installation and the link budget and coverage have been calculated by certified RF system design engineer BOM test plan and other documents must be in place prior to the installation Section 4 Safety Information and Regulations Do not dismantle the equipment Do not add extra pressure to REPEATER enclosure or attach anything to th...
Page 7: ... must be designed properly by a qualified system design engineer with proper RF planning tool 3 Route the feed lines from the donor antenna to the REPEATER and service antennas to the REPEATER following the system design documents Connect the feed line to donor antenna and feed line to service antenna Waterproof the connections Do not connect the feedlines to the REPEATER 4 Verify isolation betwee...
Page 8: ...ent RF signal strength measurement equipment is available Highly recommended 5 1 1 Set the spectrum analyzer s frequency range bandwidth and other parameters 5 1 2 Connect donor antenna to the input port of spectrum analyzer Completion Test for call qulitity Adjust the direction of donor antenna Connect power supply adapter Measure receiving signal strength form base stantion Install donor antenna...
Page 9: ...ER BS port If the Alarm indicator stays green when you change the donor antenna direction this means the donor signal is too weak and you will get degraded coverage even no coverage Following are what you need to do 5 2 3 Immediately report to the project manager and system design engineer 5 2 4 Recommend to confirm the signal strength using a spectrum analyzer if possible 5 2 5 Work with your pro...
Page 10: ... the cable loss 3 Always install the donor antenna at the most available highest position and keep distance from the service antenna to maximize the isolation between each other The vertical distance between donor and service antenna should be more than 3 meters 4 Certain isolation between donor antenna and service antenna are required to avoid self oscillation In case self oscillation happens rep...
Page 11: ...Orange Green Threshold X 42dBm 4 ALC work 15 20dB Red Green Threshold X 37dBm 5 ALC work 25dB self excitation now Red light blinks Red light blinks 1 Adjust the gain If the input signal level is too high or the space of donor antenna and service antenna is not enough 2 If the red light still turning on that means over accepting of donor antenna or strong interference then adjust the place of donor...
Page 12: ...B 6dB Input VSWR 2 2 Max Input Power Without Damage 10dBm 10dBm ATT step of 1dB 1 10dB 1dB 1dB 10 20dB 1dB 1dB 20 30dB 1 5dB 1 5dB ALC Active 10dB 2dB 2dB Out of Band Gain 600kHz 45dB 45dB 1MHz 40dB 40dB 5MHz 40dB 40dB Intermodulation Products 45dBc 45dBc Spurious Emission 9KHz 1GHz 36dBm 36dBm 1GHz 12 75GHz 30dBm 30dBm Noise Figure max gain 8dB 8dB Time Delay 8μs 8μs Alarm ALC not Active Green AL...
Page 13: ...ons 260mmx202mmx45mm Weight 2 5kg RF Connector N Female Environment Conditions IP40 Humidity 90 Operating Temperature 10 55 Section 8 LED Display Panel of Operations Guide Fig 5 Display Details Working Frequency Range Input Output Power Gain Alarm items Operating Mode Automatic or manual ...
Page 14: ...an see Variable Band Repeater B20 System Note can customize Company Logo or Other words Fig 7 1 Click UL or DL click OK Then you can see the frequency click OK again click or Setting the frequency range which you want and click OK finish Click M back to Main Menu Fig 8 ...
Page 15: ...Fig 9 3 Click GAIN click OK real time inquiry Uplink gain and downlink gain click or then setting gain which you want click OK finish click M back to Main Menu Fig 10 4 Click ALARM ITEMS click OK real time inquiry PLL Downlink output power AGC Temperature and RF switch Only for checking NO setting click M back to Main Menu 1 DL Output 27dBm OK change to Alarm 2 ALC work 25dB OK change to Alarm 3 T...
Page 16: ...www rftoo com 16 16 info rftoo com limit displayed as Alarm Fig 11 5 Click MODE click OK Recommend AUTO When MANUAL ALC 25dB uplink power will SHUT OFF need to manually re power to TURN ON ...
