EMS Technologies 0A1MINI19 1900 MHz PCS Repeater User Manual Manual

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Document ID	72519
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Document Description	Users Manual
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Document Type	User Manual
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Date Submitted	1999-11-30 00:00:00
Date Available	2000-02-14 00:00:00
Creation Date	0000-00-00 00:00:00
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Document Title	Manual
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Preliminary Document
Eko-Mini

Manual
Description
The Eko-Mini is a band selective, bi-directional amplifier unit and was designed to provide
enhanced RF coverage for wireless systems in small facilities. Usage includes providing
coverage in retail stores, offices, warehouses, restaurants, homes, etc.
The Mini is housed in an indoors mountable enclosure, and is powered with a regulated wall
mountable power supply.
The Mini supports most system protocols including CDMA, GSM/PCS1900 and TDMA and
is available in models that cover all licensed 1.9 GHz PCS bands A through F, ESMR/SMR
806-866 MHz and Cellular 821 to 894 MHz. Band selective filtering in both uplink and
downlink signal paths is accomplished with down conversion to an intermediate frequency
and SAW filtering to provide maximum selectivity from out of band carriers.
The Mini features Auto set-up, lightweight compact enclosure, optional remote alarming,
excellent electrical specifications, high reliability and cost effective pricing.
Functionality
The Mini is capable of automatically adjusting its own signal gain levels up to the maximum
output power levels. The Mini detects the downlink output power and adjusts the level for 20dBm composite output power and continues to monitor and reset the gain as required for
proper system performance. For example, when CDMA protocol system is being amplified,
there could be an error in set up initially resulting from only pilot sync, and paging Walsh
codes being present on the RF carrier. The Mini will reduce the system gain until no signal is
received that will exceed the output power setting. This prevents the Mini from setting up to a
higher in power level than actually desired if all of the Walsh codes were present. The gain
does not continually change to maintain an output power of 20 dBm (AGC) since this would
defeat and fight the benefits of power control in the system. The user may reduce or limit the
power output level by adjusting the peak power limit as described below. The user peak
power switches will set the unit’s output power up to 14 dB below the maximum power
output of 20 dBm the user interface to control this feature is the peak power switches.
The Mini has 30 dB of gain control in the uplink and downlink signal paths. This gain is
controlled by two methods. Up to 14 dB can be controlled by adjusting the user peak limit
switches located behind an access plate on the side of the unit to limit the maximum output
power level. The uplink and downlink attenuators are controlled by the internal
microprocessor to adjust the maximum gain of the unit for both paths. The uplink and dowlink
signal paths are adjusted to the same setting by the microprocessor unless the user offsets,
reduces the gain in the uplink signal path. The user has control to reduce the uplink gain by 6
dB, this can be used to balance the uplink and downlink paths as well as reduce contribution
of noise to the base station receivers.
CI Wireless Inc.
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Preliminary Document
Downlink Peak Power Limit
Power Limit (dBm)
20
18
16
14
12
10
Switches
Seven Eight
off
off
off
off
on
off
on
off
off
on
off
on
on
on
on
on
Six
off
on
off
on
off
on
off
on
Uplink Gain Offset, reduces uplink gain
Gain Offset (dBm)
-2
-4
-6
One
off
on
off
on
Two
off
off
on
on
If a unit is moved from one location to another pressing the reset switch will restart the
automatic set up feature. If the peak limit and uplink gain offset switches are preset when the
unit is installed the mini will first attempt to set itself up to the full RF output power of 20
dBm and then reduce power as instructed by the peak limit and uplink gain offset switches.
The Mini has a total of 30 dB of gain control in the uplink and downlink signal paths which is
controlled by the microprocessor. The microprocessor monitors the up link and down link
detected signal levels and adjusts the gain to prevent overdriving the linear power amplifier
circuits.
The mini monitors the downlink detected signal and adjusts the gain to achieve rated output
power, 20 dBm. The uplink attenuation is adjusted by the microprocessor to the same gain
level. Path loss is normally equal in both directions. The microprocessor continues to
monitor the detected output power on both paths to prevent overdrive. Should the downlink
detected power increase above the desired level, the processor will reduce the gain in both up
link and down link paths. A subscriber unit getting very close to the rerad antenna, may
causes uplink signal overdrive. The processor will temporarily reduce the gain in the up link
(reverse) path when uplink signal overdrive is sensed, which will reduce the coverage during
this condition. Proper placement of the rerad antenna will reduce the occurrence of this
condition.
The output power level setting and the maximum detected level, along with date and time, are
recorded in the history log file.
CI Wireless Inc.
11/19/99
Preliminary Document
Protocol Selection
To insure proper RF power output the proper protocol must be selected this insures the
software will properly distinguish the detected RF power level. CDMA is the only protocol
that requires a different look up table/RF calibration.
Protocol Selection
Switch Five
CDMA
All Other*
On
Off
*All other protocols include; AMPS, GSM, PCS 1900, CDMA, IDEN, ESMR, TDMA
Band Selection
The Mini is available in two models, a 15 Mhz bandwidth unit and a 5 Mhz bandwidth unit.
Selection of the proper operating band A, B, or C with the 15 Mhz unit and D, E, or F with the
5 Mhz model is user selectable with two dip switches as follows:
Band Selection
Band Width
Switch 3
Switch 4
15
15
15
off
on
off
off
off
on
off
on
off
off
off
on
If the switches are improperly set (On/On), the unit will not function. This fault will be
indicated by the DC power on LED Indicator flashing green.
Note: If the band selection switch is changed after the unit is powered up the unit will not
change frequency until the (1) power is cycled or (2) the reset switch is pressed, (Activating
the reset switch will make the unit go through the set up cycle).
Remote Alarming
Remote alarming is accomplished with a factory install modem and software option. The
Mini microprocessor will detect the modem and initialize the required software. By dialing
into the unit, it may now be programmed to the desired response numbers and alarm codes.
Access to programming mode requires entering a user selected 5-digit password.
1.
Telephone Number
CI Wireless Inc.
20 digits, maximum
Include required access codes such as 9
If required by a PBX. A comma is used to insert a
delay.
11/19/99
Preliminary Document
2.
Pin
Alarm Code
10 digits
20 numeric digits
Telephone Number
20 digits, maximum
Include required access codes such as 9 if required by a
PBX. A comma is used to insert a delay.
10 digits
20 numeric digits
3 numeric digits, 0 to 999 minutes
Pin
Alarm Code
Delay
3.
Telephone Number
Pin
Alarm Code
Delay
20 digits, maximum
Include required access codes such as 9 if required by a
PBX. A comma is used to insert a delay.
10 digits
20 numeric digits
3 numeric digits, 0 to 999 minutes
A factory default password is preprogrammed into the unit as 10000. The user may change
this in the program mode of operation. There is also a factory access password.
Up to three numbers and alarm codes or paging pin numbers can be sent. The unit will send
an alarm to the first number when an alarm occurs. (The alarm is not sent during the red
flashing alert period. It is delayed 5 minutes to be certain the alarm will not clear itself).
Each additional number and alarm, which has a programmed sequence, will be sent after the
programmed delay. The delay, which is set, is a time measurement from initially sending the
first telephone call and alarm.
Should an alarm condition clear, the Mini will send an Alarm Clear alert to the same number
or numbers that were alerted previously. As an example the alarm condition could occur if
the base station was turned off for maintenance.
The unit will record time, date and cause of the last 25 reportable (alarms present after 5
minute alert delay) alarms. The user may download these via the modem connection or
factory personnel may also review them. Retrieving log history requires entering the
password.
Command, Clear Log File, is accessible only with the factory password.
Alarms
All alarms are considered major since there is no field replaceable modules in the unit. All
alarms are indicated locally immediately by the Alarm LED indicator blinking red. Once the
Alarm State has existed for 5 minutes, the Alarm LED will have a constant red indication.
Certain problems will result in the unit automatically shutting down after 5 minutes of sensed
failure. This is done by disabling the RF output stages in both the up link and down link
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Preliminary Document
signal paths. Removing DC power from the unit for a period of 30 seconds or longer will
reset the auto shut down.
Failure
Alarm Cleared
Synthesizer Lock, Uplink
Synthesizer Lock, Downlink
Downlink RF Overdrive
Uplink RF Overdrive
No Downlink RF Detected*
Internal Voltage Failure
Low Current Draw
Keep Alive(1)
Action
Alarm Code
Auto Shut Down
Auto Shut Down
Auto Shut Down
Auto Shut Down
Alarm Only
Alarm Only
Alarm Only
Auto Shut Down
*Minimum detectable RF level is approximately –10dBm. Unit will alarm below this level.
(1)
Not applicable unless equipped with remote alarms. On units with remote alarms it must be
activated when the remote messaging is set up.
Keep Alive
The Mini Keep Alive feature can only be activated once the modem has been installed. Once
activated by the user in the program mode, this feature requires the Mini, or a remote
computer, to have contact at least once daily. If no contact is completed, the Mini will shut
down and activate an alarm.
The Mini can be programmed requiring a Keep Alive activation from as often as the user
desires, but at least once daily. The factory default requires one daily activation and is set to
occur between 3:00 and 4:00 AM.
Indicators
The Mini is equipped with three LED indicators on the end of the unit which provide the
following information:
Indicator
State
Description
On/Alarm
Off
Green
Green Flashing
No DC Input Power Applied
DC Power on, normal function
DC Power on, Set up fault-Band
Selection
Red Flashing
Fault Conditon
5 Minute Warning
(See list of alarms)
Alarm
Red
CI Wireless Inc.
11/19/99
Preliminary Document
Uplink RF
>-10 dBm
>-5 dBm
> 0 dBm
>5 dBm
>10 dBm
>15 dBm
>20 dBm
Over Drive
Downlink RF
>-10 dBm
>-5 dBm
> 0 dBm
>5 dBm
>10 dBm
>15 dBm
>20 dBm
Over Drive
*No RF Uplink Detected; this is a normal state for the uplink RF path. The normal levels of
RF received and amplified from the subscriber unit may be below the –10 dBm detectable
level. A quick check can be made by getting within a few feet of the Rerad Antenna, while
watching the Uplink RF indicator.
Primary Power
The Mini Unit operates on 9 VDC input power @ 6 Amps. This is supplied with a regulated
wall mount supply, which is UL, and CSA listed. These are available to operate on AC input
voltages of 90 to 260 VAC.
Donor Antenna
This input/output is connected to an antenna, which is directed at the desired cell site.
Rerad Antenna
This input/output is connected to an antenna, which is mounted in the desired area to be
covered. The antenna should be mounted at a location where adequate coverage is provided
for the area desired while minimizing the potential of subscriber units normally operating close
enough to overdrive the unit.
Serial Number
Each unit has a unique electronic serial number. This number is displayed on the decal on the
unit and is also displayed with the history log when using the modem interconnect.
CI Wireless Inc.
11/19/99
Preliminary Document
Installation:
Note 1: qualified technicians should only perform Installation and system set up. The user is cautioned that
modification or changes to this device not expressly approved by the party responsible for compliance could void
the user’s authority to operate this equipment.
Note 2: Manufacturer’s rated output power of this equipment is for single carrier operation. For situations when
multiple carrier signals are present, the rating would have to be reduced by 3.5 dBm, especially where the output
signal is re-radiated and can cause interference to the adjacent band users. This power reduction is to be
determined by means of input power or gain reduction and not by an attenuator at the output device.
Note 3: This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this
device does not cause harmful interference.
Introduction
Eko-Mini is quick and easy to install, using a minimum set of common tools. This section will
provide the basic steps to performing the installation of EkoCel -Mini. Please read complete
instructions before beginning assembly.
Getting Started:
Unpack all of the boxes and insure all of the material is included for your installation
requirements and undamaged in shipment.
QTY
Description
EkoCel -Mini
+9 VDC Power Module
AC Power Cord
Mounting Screws and wall inserts
Manual
Test Data, Factory
Optional, Telephone cable 6 ft.
Mounting the Hardware:
-Mount the Mini Unit with the four mounting screws provided.
-Connect coaxial cables the Donor and Rerad ports.
-Connect primary power module to AC source and connect 9 VDC output to Mini DC Input.
-Optional connect telephone line to RJ11 jack.
Refer to attached drawing for any clarification.
Select Mounting location of Donor directional antenna and orientated toward the base station
to maximize signal level. For best performance this should be line of sight between the Donor
antenna and the base station antenna.
Select mounting location of Rerad antenna to provide maximum coverage while maintaining at
least 20 feet from normal usage if possible to reduce the possibility of overdrive.
CI Wireless Inc.
11/19/99
Preliminary Document
IMPORTANT: Before performing maintenance on any module, make sure power is OFF.
System Set Up Instructions:
-Apply Power after setting user switches and unit will automatically set up.
-Set Band Switches to desired Band (Preset at Factory to A or D depending on the Models
BW 15 or 5 Mhz)
-Set UL gain offset as desired (Preset to 4 dB offset)
-Set DL RF Output Power to desired maximum Level (Factory Preset to full Power, 20 dBm
Composite)
-Set Protocol selection Switch (Factory Preset to All Other, SW 5-OFF)
-For set up of optional remote alarming refer to software set up instructions.
CI Wireless Inc.
11/19/99
Preliminary Document
CI Wireless Inc.
11/19/99
Preliminary Document
Trouble Shooting:
The Eko-Mini has no field replaceable parts; repair is down to improper set up or software
programming, installation or defective units.
Problem
No Power
Alarm Indication
Remote Alarms inoperable
Check
Power Source
Power Source OK
No RF Downlink Indication
No Uplink RF Indication
Recycle AC Power
Reset Switch
No RF DownLink Power
Generate Alarm, remove RF
input
Software OK,
Telephone Line OK
Check Band Switches
Low DownLink RF Power
Switches Set properly
Check Input Power Level
Signal Strength Good
Low RF Output Power
CI Wireless Inc.
11/19/99
Corrective Action
Reconnect or repair
Replace Unit
Check RF Input Source
Check RF Antenna Input
No Change
No Change
Replace Unit
Program Software
Check Telephone line
Replace Unit
Set Switches & recycle
Power
Replace unit
Relocate Donor Antenna,
improve signal strength
Increase Donor Antenna
Gain
Shorten Coaxial Cable length
Reset Switch, Start new
system set up
Replace Unit
10
Preliminary Document
Parameters
MINI-19
Forward
Reverse
Operating Frequency, (MHz)
Band Selective A, B, or C, (MHz), 1 dB Bw
Band Selective, D, E, or F, (MHz), 1 dB Bw
Gain, (dB), Adjustable in 2 dB steps
Peak Limiting adjustable, (dB)
Gain Flatness, (dB)
Noise Figure, (dB)
Return Loss (dB)
Composite Power, User Selectable, (dBm)
(Up Link tracks down link setting)
Group Delay, (usec)
Spurious Emissions,
Out of Band, (dBm)
Input RF Signal, (dBm)
Operating Temperature, (°C)
Primary Power, (VAC)
Current Draw, (Amps)
Enclosure Dimensions, HxWxD, (Inches)
Weight, (lbs.)
MTBF, (hours)
RF Connectors, Donor, Rerad (2)
Alarms,
Power On
Forward Signal,
No RF Detected/ RF Detected / Overdrive
Current
Reverse Signal,
RF Detect / Overdrive
Optional Remote Alarms
1930 to 1990
14.75
4.75
40 to 70
14
+1/-2
≤8
15
6 to 20
1850 to 1910
14.75
4.75
40 to 70
14
+1/-2
≤8
15
6 to 20
≤4
≤4
≤13
<-20
+5 to +45
90 to 260
.5
2.25x7x14.5
6.5
75,000
N/Female
≤13
<-20
+5 to +45
CI Wireless Inc.
11/19/99
Telephone Modem
11

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