User's Manual

ManualsBrandsEMS Technologies ManualsElectronics1900 MHz PCS Repeater

Preliminary Document

CI Wireless Inc. 11/19/99 1

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 20-

dBm 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.

Summary of content (11 pages)

PAGE 1
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.
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Preliminary Document Downlink Peak Power Limit Power Limit (dBm) 20 18 16 14 12 10 8 6 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) 0 -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.
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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.
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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.
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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.
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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.
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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.
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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.
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Preliminary Document CI Wireless Inc.
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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.
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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 Dr