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NVRCSI-DSP25X-L7Channelized Bidirectional Amplifier

Westell, Inc.
Channelized Bidirectional Amplifier - FCC ID NVRCSI-DSP25X-L7 - Westell, Inc.
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Application Details

Equipment Class
TNB - Licensed Non-Broadcast Station Transmitter
Date of Grant
Mar 20, 2011
Application Purpose
Original Equipment
Date of Application
Mar 20, 2011
Equipment Note
Channelized Bidirectional Amplifier
Frequency Range
728.00000000 - 746.00000000
Company
Westell, Inc.
Country
United States

Documents & Files

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Users Manual

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Cover Letter(s)

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External Photos

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ID Label/Location Info

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Internal Photos

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Parts List/Tune Up Info

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RF Exposure Info

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Test Report

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

CSI-DSP85-250-L7, CSI-DSP85-250-U7C, CSI-DSP85I-250-L7, CSI-DSP85I-250-U7C, CSI-DSP85-251-L7, CSI-DSP85-251-U7C, CSI-DSP85I-251-L7, and CSI-DSP85I-251-U7C -2- -3- Table of Contents Product Registration Information ....................................................................................................................................... 4 Document Purpose / Intended Users.................................................................................................................................. 4 Application ............................................................................................................................................................................ 4 Radio and Television Interference ...................................................................................................................................... 4 Safety Guidelines ................................................................................................................................................................. 4 Important Safety Information .............................................................................................................................................. 5 Terms used in this manual .................................................................................................................................................. 5 Product Introduction ............................................................................................................................................................ 5 Band Plan and Filter Naming Convention .......................................................................................................................... 6 LTE Filter File Naming Convention .................................................................................................................................... 6 Functional Overview ............................................................................................................................................................ 7 LED Indicator ........................................................................................................................................................................ 7 Local Communication Interface Ports ................................................................................................................................ 8 EIA232 Pin Specifi cations.................................................................................................................................................... 8 USB Interface ........................................................................................................................................................................ 8 Ethernet ................................................................................................................................................................................. 8 Monitoring & Alarms ............................................................................................................................................................ 9 System Set-Up Considerations ........................................................................................................................................... 9 Selection of external attenuators to be used in line with the Antenna Port(s) ............................................................... 9 Donor Port ........................................................................................................................................................................... 10 Server Port .......................................................................................................................................................................... 10 Attenuator Selection Guidelines ....................................................................................................................................... 10 Mounting the Digital Repeater ........................................................................................................................................... 11 Important Installation Notes .............................................................................................................................................. 12 Installation Tips .................................................................................................................................................................. 12 Optional Accessories ......................................................................................................................................................... 12 Circuit Operational Description ........................................................................................................................................ 13 Functional Block Diagram ................................................................................................................................................. 13 Mechanical Specifi cations ................................................................................................................................................. 14 Environmental Requirements............................................................................................................................................ 14 AC Power Specifi cations ................................................................................................................................................... 14 Operating Power Parameters ............................................................................................................................................ 15 Mechanical Drawing ........................................................................................................................................................... 16 System Status ....................…

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ID Label/Location Info

MODEL CSI-DSP-25X-L7 Repeater FCC ID LABEL FCC ID: NVRCSI-DSP25X-L7 This device complies with parts 27 and 2 of the FCC rules

RF Exposure Info

Evaluation of the CSI Model CSI-DSP85-25X-L7 BDA For Compliance with FCC Guidelines For Human Exposure to Radio Frequency Electromagnetic Fields 18 March 2011 General The CSI Model CSI-DSP85-25X-L7 Bi-directional amplifier is considered to be a dual- band “mobile” device operating in both the Cellular Service authorized under part 27. As such, the equipment is required to be evaluated for RF exposure if operated below 1.5 GHz with an effective radiated power (ERP) of 1.5 watts or more or if operated above 1.5 GHz with an effective radiated power (ERP) of 3.0 watts or more, as defined in 2.1091 of FCC rules. Downlink For the downlink portion of the Model CSI-DSP85-25X-L7 BDA, the maximum rated output power is +31.27dbm (1340 mW) in the 700 MHz band (<1.5 GHz). As stated in the Model CSI-DSP85-25X-L7 Manual, the maximum authorized indoor antenna gain is 3 dBi, corresponding to a typical Multi-Band Omni-Directional antenna. The Table below shows the results of the calculated ERP, neglecting cable losses. Frequency Power Out Ant Gain EIRP ERP Limit 728-746 MHz 31.27dBm 3 dBi 34.27 dBm 1,618 mW 1.5 W As shown in the above table, the level exceeds the allowable limit and must be evaluated for minimum separation distances in order to comply with the exposure limits of 1.1310 of the FCC rules. Using the guidelines in FCC OET Bulletin 65 and Supplement C, the power density at a reasonable distance from the maximum gain antenna was calculated. The minimum safe distance was also determined based on the uncontrolled exposure limits defined in Table 1B of FCC rules 1.1311. The following assumptions are made concerning these calculations: 700 Mhz Band Po = 1340 mw average Cable Loss = 0 dB Ant Gain = 3 dBi Frequency = 736 MHz Main Beam (worst-case) 100% reflection Reasonable Distance = 20 inches (51 cm) Therefore, from OET Bulletin 65, S = (PG)/4R 2 or S = EIRP/4R 2 For 100% reflection, a doubling of the field strength can be expected. The above equation can be modified to, S = (2) 2 PG/4R 2 = EIRP/R 2 Solving for S at a distance of 20 inches (51 cm) gives, S = (1340) (2)/  (51) 2 = 0.33 mw/cm 2 From FCC rules 1.1311, Table 1B, the allowable limit for uncontrolled exposure is f(MHz) / 1500. At a frequency of 736 MHz, the limit is 0.49 mw/cm 2 . The calculated value of 0.33 is below both the limit thereby showing compliance under worst-case operating conditions. The Cautions in the Model CSI-DSP85-25X-L7 manual clearly define the antenna selection and installation criteria in order to maintain a minimum 20 inches (51 cm) separation. Uplink For the uplink portion of the Model CSI-DSP85-25X-L7 BDA, the maximum rated output power is +31.23dbm (1327 mW) in the 700 MHz Band (<1.5 GHz). As stated in the Model CSI-DSP85-25X-L7 Manual, the maximum authorized outdoor antenna gain is 14 dBi, corresponding to a typical Multi-Element Yagi-Directional antenna. The Table below shows the results of the calculated ERP for this case, neglecting cable losses. Frequency Power Out Ant Gain EIRP ERP Limit 698-716 MHz 31.23 dBm 14 dBi 45.23 dBm 20331 mW 1.5 W As shown in the above table, the level exceeds the allowable limit and must be evaluated for minimum separation distances in order to comply with the exposure limits of 1.1310 of the FCC rules. Using the guidelines in FCC OET Bulletin 65 and Supplement C, the power density at a reasonable distance from the maximum gain antenna was calculated. The minimum safe distance was also determined based on the uncontrolled exposure limits defined in Table 1B of FCC rules 1.1311. The following assumptions are made concerning these calculations: 700 Mhz Band Po = 1327 mw average Cable Loss = 0 dB Ant Gain = 14 dBi Frequency = 707 MHz Main Beam (worst-case) Rooftop 100% reflection Reasonable Distance = 6 feet (183 cm) Therefore, from OET Bulletin 65, S = (PG)/4R 2 or S = EIRP/4R 2 For 100% reflection, a doubling of the field strength can be expected. The above equation can be modified to, S = (2) 2 PG/4R 2 = EIRP/R 2 Solving for S at a distance of 6 feet (183 cm) gives, S = (1327) (25)/  (183) 2 = 0.32 mw/cm 2 From FCC rules 1.1311, Table 1B, the allowable limit for uncontrolled exposure is f(MHz) / 1500. At a frequency of 736 MHz, the limit is 0.49 mw/cm 2 . The calculated value of 0.32 is below both the limit thereby showing compliance under worst-case operating conditions. The Cautions in the Model CSI-DSP85-25X-L7 manual clearly define the antenna selection and installation criteria in order to maintain a conservative 6 feet (183 cm) separation.

Test Report

Test Report No. R-5440N FCC ID: NVRCSI-DSP25X-L7 Retlif Testing Laboratories R Certification and Signatures We certify that this report is a true report of the results obtained from the tests of the equipment stated and relates only to the equipment tested. We further certify that the measurements shown in this report were made in accordance with the procedures indicated and vouch for the qualifications of all Retlif Testing Laboratories personnel taking them. Scott Wentworth Branch Manager NVLAP Approved Signatory Todd Hannemann Laboratory Supervisor iNARTE Certified ATL-0255-T Non-Warranty Provision The testing services have been performed, findings obtained, and reports prepared in accordance with generally accepted testing laboratory principles and practices. This warranty is in lieu of all other warranties, either express or implied. Non-Endorsement This test report contains only findings and results arrived at after employing the specific test procedures and standards listed herein. It is not intended to constitute a recommendation, endorsement, or certification of the product or material tested. This report must not be used by the client to claim product endorsement by NVLAP, NIST or any agency of the U.S. Government. Test Report No. R-5440N FCC ID: NVRCSI-DSP25X-L7 Retlif Testing Laboratories R CERTIFICATION APPLICATION SUMMARY Applicant/Manufacturer: Cellular Specialties 670 North Commercial Street Manchester, NH 03101 Equipment under Test (EUT): The EUT is a Channelized Cellular Digital Repeater System (Cellular Amplifier) Model: CSI-DSP85-25X-L7 FCC ID Number: FCC ID: NVRCSI-DSP25X-L7 Applicable Test Standard: FCC Parts 2 & 27 Measurement Procedure: ANSI/TIA-603-C-2004 Device Classification: Mobile EUT Frequency Range Band: Uplink: 698 MHz to 716 MHz Downlink: 728 MHz to 746 MHz Power Output Rating for Uplink: +31.23dBm = 1.327W Certification Grant Downlink: +31.27dBm = 1.339W Modulation Type: LTE (F9W) RF Exposure + Antenna Installation: See Attached Installation/Users Manual and MPE Evaluation Measurements Required by FCC: See Report Section 1 (Summary of Test Program) and the following Test Report Data Attachments: -RF Power Output (27.50) -Occupied Bandwidth (2.1049) -Spurious Emissions at Antenna Terminals (27.53) -Effective Radiated Power of Spurious Radiation (27.53) -Frequency Stability (27.54) Test Report No. R-5440N FCC ID: NVRCSI-DSP25X-L7 Retlif Testing Laboratories R SECTION 1 SUMMARY OF TEST PROGRAM RF POWER OUTPUT The RF Power Output test was performed using RMS channel power measurements of a single LTE channel. The measurements were taken with the AGC turned off at maximum output power with all spurious emissions below the -13dBm limit. The measured output power matched the manufacturer’s rated output power. See attached test data. OCCUPIED BANDWIDTH Measurement Procedure: For Occupied Bandwidth, measurements were made to compare the input signal to the output signal. The signal generator output was connected to the spectrum analyzer. A LTE modulation signal was then applied to the carrier. Waveforms were then noted on an X-Y plot. Next, the signal generator was connected to the EUT and the output of the EUT was connected to the spectrum analyzer. The output waveform after amplification was then compared to the original input signal to ensure that no significant differences occurred between the input signal and the amplified signal. Testing was performed at one frequency within each passband (uplink and downlink). See Occupied Bandwidth Data. SPURIOUS EMISSIONS AT ANTENNA TERMINALS Measurement Procedure: The signal generator output was connected in turn to the uplink and downlink input ports of the EUT. The input power level was at the maximum level which was ascertained during the Power Output test. A spectrum analyzer was connected to the output of the EUT. The input test frequencies used were one frequency (mid) within each passband (uplink and downlink). The level of any spurious emission was recorded. Testing was performed in the frequency range of 30MHz to 8GHz. Testing was performed for LTE modulation type. The spurious emissions limit is -13dBm as specified in FCC Part 27. All emissions were below the specified -13dBm limit. See attached test data. ] Test Report No. R-5440N FCC ID: NVRCSI-DSP25X-L7 Retlif Testing Laboratories R EFFECTIVE RADIATED POWER OF SPURIOUS RADIATION Measurement Procedure: The test sample was placed on an 80cm high wooden test stand which was located 3 meters from the test antenna on an FCC listed test site. A signal generator was connected to the input of the amplifier. The signal generator output was set to provide the input power level necessary to achieve maximum output power of the amplifier at 1 frequency (mid) within each passband (uplink and downlink). The effective radiated power of each out of band spurious emission was measured using the substitution method specified in ANSI/TIA-603-C-2004. The frequency range of the test was 30MHz – 8GHz. The limit for out of band spurious emissions is -13dBm as specified in Part 27. All emissions were below the specified -13dBm limit. See attached test data. FREQUENCY STABILITY MEASUREMENTS This unit does not perform band translation but frequency stability measurements were performed to the manufacturers rated temperature range of operation. The test sample was placed into a temperature chamber with the AC input power supplied through a variable power source. A signal generator was used to provide the input signal and the output was measured with a frequency counter. With the test sample operating at maximum output power the test sample’s output frequency was measured and recorded at the extremes of the temperature range and at 10 degree increments from 0 degrees C to +50 degrees C while the AC input voltage was varied from 85 to 115% of nominal. The output frequency for both the uplink and downlink stayed within the assigned frequency band. See attached test data. Test Report No. …

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Contact Information

Applicant

Joseph K Gage(Compliance Engineer)
[email protected]630-375-4724Fax: 630-375-4938

Technical Contact

Retlif Testing LaboratoriesScott Wentworth
[email protected]6034974600

101 New Boston Road · Goffstown, New Hampshire · United States

Non-Technical Contact

Retlif Testing LaboratoriesScott Wentworth
[email protected]6034974600

Technical Specifications

#Rule PartsFrequency RangePower OutputEmissionTolerance
227728 MHz - 746 MHz1.339 WF9WAmp
Confidentiality
Long Term
Grant Notes
The antenna(s)used for this transmitter (repeater) must be fixed-mounted on indoor or outdoor permanent structures. RF exposure compliance is addressed at the time of licensing, as required by the responsible FCC Bureau(s), including antenna co-location requirements of �1.1307(b)(3).

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