epcom EP20M-5B Series Cell Signal Amplifier User Manual
- June 1, 2024
- epcom
Table of Contents
EP20M-5B
Series
Cell Signal Amplifier
User Manual
EP20M-5B Series Cell Signal Amplifier
PLEASE KEEP APPROPRIATELY AND CAREFULLY READ THIS USER MANUAL BEFORE
INSTALLATION
The power supply voltage of repeater should meet the standards of security
requirements
The repeater should be installed and started by professionals
Keep the repeater away from heat source, do not install in a narrow space
Ensure of grounding, waterproof and lightning protection when installing the
repeater
Do not open the repeater, maintain or replace the components
Package Contents
Product Description
EP20M5B five band repeater is a mobile signal repeater with high intelligence.
It adopts digital ALC and anti-interference technology, which can detect the
signal quality in the coverage area in real time and auto adjust the working
status accordingly.
The signal repeater can automatically attenuate the gain of uplink and
downlink, according to the detected signal intensity and also when there is
insufficient isolation between inside and outside antenna, to avoid self-
oscillation. When there is no mobile users in the coverage area, the device
will auto shut off uplink, to save power consumption and decrease the
interference to the base station.
This signal repeater series are well suited in Central and South America,
available to amplify 2G 3G 4G or 5G networks of several mobile operators. With
features like elegant appearance, compact size and easy to install and
maintain, it has an output power of 20dBm which enables the device to cover an
area of up to 1200 ㎡ with proper installation. That makes it an excellent
option to solve weak signal problems of house, office, elevator, basement,etc.
Product Features
- LCD screen to display device’s operating parameters clearly, button control make it easier to operate the device；
- Available to support several mobile operators’ networks simultaneously；
- Low power consumption, low interference；
- Manual gain control, with 1dB step to attenuate the gain among the range of 31dB；
- Digital ALC technology, auto limit the output power to ensure stable signal coverage；
- Anti-interference technology, auto detect the isolation in real time. When isolation is insufficient, device will auto attenuate the gain, to avoid self-oscillation occurs to interfere the base station；
- Uplink dormant function, when no mobile users in the coverage area, device will shut off uplink output, to save power consumption and not interfere the base station.
Connector Description
- A ： Outside antenna connection port (N-female)
- B ： Inside antenna connection port (N-female)
- C ： 12V DC power connection port
- D ： Power switch
- E ： Grounding screws
- F ： LCD display screen
- G ： Menu Button
- H ： Select and confirm button
- I ： Value increase button
- J ： Value decrease button
- K ： Working status indicator
Operation and Display Description
a. Function Buttons on the Control Panel
MENU ：Main Menu
SET： To select and confirm the operation
INC+：To increase the value
DEC-：To decline the value
b. Screen Display and Screen lock
After power-on and starting running, the main menu interface of the display
screen shows the corresponding downlink frequency and gain of the working
frequency band and the downlink input and output power (Figure 1) (the
following operation instructions are for reference only, the specific
frequency and gain are subject to the device)；Long press “MENU” for 5 seconds
- press “INC+” key to enter the lock screen (Figure 2), single-pressing the key is invalid. The device is working normally but the display screen does not display, then long press “MENU” for 5 seconds + press “INC+” key after unlocking the screen, you can operate and display normally after unlocking the screen (Figure 1).
c. Gain Attenuation Setting
Press “MENU” and select the band needed to adjust；Press “SET” 3 seconds until
“Gain: DLxxdB” flashing(Figure 3)，Press “SET” once more to specific setting of
the uplink or downlink , then press “INC+” or “DEC-” to attenuate the
gain(Figure 4 and 5). When the setting is finished and press “MENU” button to
return to homepage.
d. Uplink Auto shut-off function
When there is no active users in the coverage area, the uplink will shut-off
automatically. “Run” flashing (Figure 6).
e. Check real-time gain and power
Press the ‘MENU’ button to view the real-time gain (Gain) and input (Rssi) output power of the corresponding system (Figure 7).
f. Self-oscillation Elimination and Auto Shutoff Function
The device will auto detect the isolation in real time. When there is
insufficient isolation between outside and inside antenna, the device will
auto attenuate the gain to make it work normally (Figure 8,the “run” indicator
is in orange ). When severe insufficient isolation occurs, the “run” indicator
is in RED (Figure 9). Then the device will be turned off, the direction and
height of the antennas should be adjusted until there is sufficient isolation
for device’s normal working.
Technical Specification
| Model | Uplink (MHz) | Downlink (MHz) |
|---|---|---|
| EP20M5B | 703~748/824~849/1710~1780/1850~1915/2500~2570 |
758~803/869~894/2110~2180/1930~1995/2620~2690
Gain VSWR
Output Power ALC Active 10 dB
Max. Input Power Without Damage Intermediation Products(CW)
9 KHz~1 GHz 1 GHz~12.75 GHz Spurious Emission 9 KHz~1 GHz 1 GHz~12.75 GHz ATT
step of 1 dB
1 ~ 10 dB 10 ~ 20 dB 20 ~ 31 dB
Noise Figure@ max. gain ACRR
5 MHz 10 MHz EVM Time Delay
RUN LED Indication Normal Uplink idle shutdown (Mute) ISO derating work
Stopped Alarm LED Indication
Not Active Active 5~10 dB Active15~25 dB SET Button INC+ Button DEC- Button
LCD Indication Band Gain Pout Work ISO ALC Auto shut-off Functions Uplink
stand-by Self-oscillation shutdown Over input turn-off Function Over-heat
protection
Self-oscillation Elimination Link Balance Function Auto screen lights off
Power Supply Power Consumption
RF Connector Impedance
Environment Conditions Humidity
Operating Temperature| 70±2 dB ≤2
15 ± 2 dBm∣ △∣ ≤2 dB
-10 dBm
≤-36 dBm
≤-30 dBm
≤-36 dBm ≤-30 dBm
∣ △∣ ≤1 dB ∣ △∣ ≤1.5 dB∣ △∣ ≤2 dB
≤8 dB
≥ 20 dB
≥ 20 dB ≤ 8 %
≤1.5 μs
—
— —| 75±2 dB ≤2 20 ± 2 dBm ∣ △∣ ≤2 dB -10 dBm ≤-40 dBc ≤-40 dBc
≤-36 dBm ≤-30 dBm ∣ △∣ ≤1 dB ∣ △∣ ≤1.5 dB ∣ △∣ ≤2 dB ≤8 dB ≥ 20 dB ≥ 20 dB ≤
8 % ≤1.5 μs Green een Flash Orange Red Green Orange Red Select and Confirm
Increase the value with 1dB step decrease the value with 1dB step
Display Working Band and Frequency
Display of UL&DL Gain
Display DL output power
Working normally: display,
Uplink idle shutdown : no display
Working normally: no display;
Auto degrading system gain: display;
Self-oscillation Turn-off: display&flashing
Not active: no display; Active@5-10dB: display;
Active@15-29dB: display&flashing Available
Available Available
Available
Available
Available
No operation within 3 minutes DC: 12 V
< 45 W
N-Female
50 ohm
IP 40
< 90 %
0℃ ~ +50℃
Installation Guides
Installation Requirements
- With stable and independent power supply.
- No corrosive gas, smoke or liquid leakage.
- Sun block and cool for device’s safe running.
- Easy for cabling and dissipation, safe and easy for maintenance.
- Waterproof and under thunder protection.
Installation Tools
No.| Items| Quantity|
Remarks
---|---|---|---
1| Percussion drill| 1| Drill holes on wall, self-provided
2| Wrench| 1| Reinforce the interface connection, self-provided
3| Mobile phone for testing| 1| Test installation effectiveness, self-provided
4| Multimeter| 1| Test voltage and wiring connection, self-provided
5| Screwdriver| 1| Tighten or fasten the device, self-provided
6| Waterproof tape| A few| Prevent liquid from leaking into the feeder
interface, self-provided
Installation Steps
The repeater should be installed on a solid and hard plane. The installation
steps are as follows:
-
Find a suitable site according to the installation requirements and dimension of repeater.
-
Drill 4 holes with the percussion drill according to the installation holes. Sizes are 7mm.
The expected sites of the holes are as the following diagram.
-
Put the expansion pipes(size: 8mm) into the 4 drilled holes.
-
Align the fixing holes of the repeater with corresponding holes on the wall, and drive 4
M6*40 screws into the expansion plugs with screwdriver and fasten the repeater firmly.
Antenna Connection
Take suitable outside antenna and inside antenna according to the
characteristic of the coverage area. Installation and connection of the
antennas should follow the requirements as following:
- The outside antenna should be installed at the place with the strongest signal and towards BTS.
- The length of the cable, which connects the outside antenna and the repeater, should be less than 20 meters.
- Wrap the waterproof tape around the connection part of the outside antenna and outdoor cable, in case of oxidization or corrosion.
- The indoor antenna should be placed 5m above lower than the outside antenna, with its direction not towards the outside antenna.
- It will be better if there can be a wall between outside and inside antennas.
- Outside antenna should connect to BTS port of the repeater while inside antenna to the MS port.
Starting
-
If possible, please connect the grounding screws of the repeater and grounding of the electrified wire with cable.
-
Make sure the feeder cables between repeater and antennas are firmly connected.
-
Connect the DC plug of the 12V/3A power adapter to the DC+12V port of the repeater.
Then put AC plug connecting to the nearby 120/220V power outlet. -
Check if repeater can work normally or not, by checking the operation parameters on the screen, according to the guides of the previous “Operation and Display Description” part.
-
Test signal intensity and dialing quality with mobile phone in the repeater coverage area.
Maintenance and Repairing
Frequently Ask Questions and Solutions
| Problems | Reasonable Causes | Solutions |
|---|---|---|
| Screen and indicator lights are off | Disconnected to power source | Check the |
power adapter and power outlet, and reconnect it
“Run” Indicator Red| Isolation between outside antenna and inside antenna is
insufficient| Change the distance & direction of outside & inside antenna,
until I.S.O is not flashing
Everything is okay after power-on, but no improvement in signal| The network
of SIM card does not comply with that of signal repeater| Replace SIM card or
repeater
The inside antenna is not successfully connected| Fasten the connection of
inside cable and connectors
The inside antenna is damaged| Replace the inside antenna
Effectiveness of the repeater degrades after working for a while| The outdoor
antenna is damaged| Replace the outside antenna
The outside antenna get loose and is not towards the BTS| Change the direction
of outside antenna and fasten it
Feeder is damaged| Replace the feeder
Notes
Power-off is recommended in the following situations.
- Power supply is abnormal.
- Liquid flows into the device or too close to the fire.
- Working conditions are abnormal such as overheating, strange smell or foreign matters.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>