CenRF CEW-P10 User Manual Download Page 18 | Manualshive

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8.4.2. Repeater’s ports description

1)

Outdoor port: connected with the donor antenna by cable

2)

Indoor port: connected with server antenna directly or by cable

3)

DC IN: connected with power supply.

8.4.3. Accessories selection

Please pay attention to the two points of “frequency” and “impedance” during the selection of the accessories.

All accessories shall support the repeater’s frequencies from feeder line, antenna and splitter to combiners etc.

For example, the repeater’s frequency is WCDMA, so all the accessories must support the WCDMA

1920-2170MHz frequency. And the repeater’s impedance is 50ohm, so the accessories shall all be 50ohm. To

use any other impedance of coax will put an extra load on your repeater, shorten its life span and decrease the

system performance.

8.5. Repeater Settings

Please check very carefully all cable connections are correct and firm before running operation test and then

carry out following tests

8.5.1. Switch on power

After power is on, check firstly the alarm and power LED’s.



Status and definition of POWER indicators:

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Summary of Contents for CEW-P10

Page 1: ...CEW P10 CEW P20 WCDMA Series Band Selective Pico Repeater User s Manual ...

Page 2: ...ION 9 7 4 REQUIREMENTS FOR ADAPTERS 10 8 INSTALLATION 11 8 1 INSTALLATION LOCATION REQUIREMENT 11 8 2 POWER REQUIREMENT 11 8 3 INSTALLATION TOOLS AND ACCESSORY 11 8 4 INSTALLATION OF DONOR ANTENNA 11 8 5 INDOOR ANTENNA INSTALLATION 16 8 6 REPEATER INSTALLATION 17 8 4 1 Installation Steps 17 8 4 2 Repeater s ports description 18 8 4 3 Accessories selection 18 8 5 REPEATER SETTINGS 18 8 5 1 Switch o...

Page 3: ...protection The power supply voltage of repeater should meet the standards of security requirement any operation shall be carried out only after cutting off power in advance Only the professional is authorized for the operation Do not dismantle machine maintain or displace accessories by yourself because in this way the equipment may be damaged or even get an electric shock Do not open the repeater...

Page 4: ...ite few mobile users so the main target is to send coverage to these areas and it will not be cost effect to install a BTS tower therefore a booster is a quite good option Can we not use mobile phones The answer is definitely NO But it might be much more miserable that the communication can t be achieved due to no or weak signals though there is a mobile phone Will your customers stay comfortable ...

Page 5: ...during the repeater s operation this repeater has a built in signal oscillation detection circuit to adjust the gain automatically so as to avoid interference to the cellular network also it gets color changing LED s indicate its environmental status the Alarm LED s located on the front of the unit Alarm Low Alarm High will change color from green to orange or red depending on the input power leve...

Page 6: ...igh integration One board to contain low noise amplifier frequency selection module power amplifier module both uplink and downlink one for all Manual gain control provides a variety of applications MTBF 50000h low failure rate 4 2 Appearance of CEW P10 CEW P20 W repeaters Figure 1 the front view colors may differ from real products Figure 2 Side View ...

Page 7: ...system diagram Duplexer The main purpose of duplexer is to combine downlink and uplink to share the same antennas the duplexer is composted of one pair of band pass filter that can not only reject the spurious interference but also increase the isolation of Uplink and Downlink LNA LNA is the first active sub system of the repeater of which low noise and high linearity is requested under strong inp...

Page 8: ...r whip antenna suitable to installed in the center and radiate all direction It is better to use a directional panel antenna or Yagi when the coverage shape is long and narrow corridors long row of houses in two sides tunnels or elevators or rural open space Cables LMR 300 or 400 5D or 8D FB coax cables are recommended Splitters or couplers when the building structure is too complicated or there i...

Page 9: ...orage Temperature 40 C to 80 C 3 Humidity 5 to 85 4 Air Pressure 86 kPa to 106 kPa 7 3 RF technical specification Electrical specification Specification Frequency range 1935 1 1950 1 MHz 2125 1 2140 1 MHz Band width 15MHz CEW P20 UL 65dB DL 70dB CEW P15 UL 65dB DL 65dB Max Gain CEW P10 UL 60dB DL 65dB MGC Step Attenuation 31dB 1dB step Automatic Level Control 15dB auto shut off after 15dB Gain Fla...

Page 10: ...5dB Spreading Factor 256 Output intermodulation Comply with 3GPP TS 25 106 ACRR 20dBc 30KHz 5MHz 10MHz Frequency stability 0 01ppm Noise Figure 6dB Return Loss 10dB Group Delay 5μs 2 Alarm standard Power LED DC ON OFF DL ALC 1 5dB orange LED indication Alarm LED DL ALC 15 20dB red LED off after 5 seconds red color 7 4 Requirements for adapters SN Item Minimum Typical value Maximum 1 Input Voltage ...

Page 11: ...wer or high pole is ok 4 Installation height should be easy for RF cable wiring heat dissipation security and maintenance 5 Have a set of independent and stable power supply 6 Have lightning conducer in the building tower or high pole with enough strength or stability 8 2 Power requirement Generally it is AC power supply and the requirement of AC is 100 264VAC 50 5Hz 8 3 Installation tools and acc...

Page 12: ...e signals from A to E and select a best place that displays full bar signals to install the donor antenna Selection the installation direction of donor antenna The donor antenna shall point to the direction of the tower and it would be much better to keep line of sight Please select the opposite directions for donor antenna and server antenna If donor and server antennas have to be installed in th...

Page 13: ...er For example if the booster gain is 60 dB then the isolation between donor antenna and server antenna should be 75 decibel The minimum distance between donor antenna and server antenna is 10 meters again the direction of donor and server antennas shall be opposite As shown in the below illustration the booster amplifies the signal R and signal T from the tower at the same time If the distance be...

Page 14: ...Page 14 of 24 Installation of panel antenna as donor antenna Installation of wide directional antenna as donor antenna Installation of YAGI antenna as donor antenna ...

Page 15: ...les in compliance with the design requirement Place cables in good order bend them smoothly and protect the outer skin against any damage 2 Bind cables in good order when laying them on cable racks Keep cables within cable troughs without any cross when you do not bind them When leading cables in or out of troughs use a hole opener to open cable troughs and then install PVC lock nuts to protect th...

Page 16: ...the same redundant cable length and keep the length of stripped cables to agree with the corresponding connectors Use a proper force to cut the jacket layer or insulation layer and avoid damaging the braid shielded net and cores Weld cores firmly and smoothly with a proper amount of solder without solder projections or nodules Assemble coaxial cables strictly in accordance with the installation sp...

Page 17: ...alled in indoor areas only 1 Drill four holes as per the bracket size on the location where the repeater shall be installed and input expanding plastic 2 Fasten the bracket vertically onto the wall by the screws 3 Hang the repeater onto the bracket The other bracket is installed onto the back side of the repeater 4 Connect the power supply and the cables properly to the repeater ports 5 Check agai...

Page 18: ...splitter to combiners etc For example the repeater s frequency is WCDMA so all the accessories must support the WCDMA 1920 2170MHz frequency And the repeater s impedance is 50ohm so the accessories shall all be 50ohm To use any other impedance of coax will put an extra load on your repeater shorten its life span and decrease the system performance 8 5 Repeater Settings Please check very carefully ...

Page 19: ...g input signals measures shall be taken Orange Slight stronger input signals or slight self oscillation have accured Off Repeater break down or deep self oscillation leads to auto mute Remark For WCDMA system only Alarm High LED works Please note that Alarm LED works on repeater downlink signals only I E the repeater input signals from NODE B Status Definition Green Normal Off DC power problem ...

Page 20: ...20dB off off ON off ON 31dB ON ON ON ON ON 10 dB off ON off ON off 21dB ON off ON off ON DIP switch downlink attenuation setting Att 6 7 8 9 10 Att 6 7 8 9 10 Att 6 7 8 9 10 0 dB off off off off off 11dB ON ON off ON off 22dB off ON ON off ON 1 dB ON off off off off 12dB off off ON ON off 23dB ON ON ON off ON 2 dB off ON off off off 13dB ON off ON ON off 24dB off off off ON ON 3 dB ON ON off off o...

Page 21: ...ter Uplink Noise figure Suppose Gnoise LD link NF Downlink gain setting There are three factors to be followed to set DL gain of indoor repeater A Meet with isolation requirement of G1 LISO 10dB The repeater s gain shall be less than Isolation I 10dB and if it allows the gain shall be less than Isolation I 15dB B Meet with UL noise Gnoise The UL noise from the repeater shall be less than the therm...

Page 22: ...is needed please use external attenuator Uplink gain setting UL maximum gain GUL MIN GDL Gnoise LISO 10dB With the condition of meeting above formula GUL value is usually between GDL and GDL 4dB 8 6 System Test 8 6 1 Check whether the coverage is good 1 Have a test with mobile phone or data card engineering mobile phone is preferred If the signals in most areas have not been improved please check ...

Page 23: ...ne call can not achieved It shall be caused by the insufficient isolation between donor antenna and serve antenna Please take below measures Firstly check whether the alarm LED becomes red The red light shows the insufficient isolation Secondly adjust the antenna directions or locations or enlarge the distance between them Test coverage 1 Mobility Service antenna 2 increase the number of service a...

Page 24: ...t the phone is not connected into the network and still can not communicate Reason 1 There are loose or wrong connections in the repeater system Solution Please try to fasten the connections between the different parts of the system Reason 2 The signals received by donor antenna of other operators nearby are too strong For example the other operators signals are 10 dB stronger than the needed sign...

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