LLB09010B1WLLB09010B1W TRANSCEIVER MODULE

Technical Brief MTU Installation Guidelines A product of Aclara Technologies LLC Confidential and Proprietary Copyright 2013. All Rights Reserved. (Y20355-TEB Rev C) PROPRIETARY NOTICE The information contained in this document is private to Aclara Technologies LLC an Ohio limited liability company (Aclara). This information may not be published, reporduced, or otherwise disseminated without the express written authorization of Aclara. Any software or firmware described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license. DISCLAIMER The information in this document is subject to change without notice and should not be construed as a commitment by Aclara. Aclara assumes no responsibility for any errors that may appear in this document. No responsibility is assumed for the use or reliability of software on equipment that is not supplied by Aclara. TWACS, STAR, and Metrum Cellular are registered trademarks of Aclara Technologies LLC. MTU Installation Guidelinesi Warnings, Cautions, and Notes FCC/IC Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . iii FCC/IC RF Exposure Guide . . . . . . . . . . . . . . . . . . . . . . . . iii Field Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . iii Overview Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Deployment Process . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Recommended Equipment . . . . . . . . . . . . . . . . . . . . . . . . 2 Signal Propagation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Free Space Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . 4 RF Absorption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 RF Reflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 RF Shadowing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Mounting Considerations Exterior Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Pit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Wiring Cable Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Wire Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Wire Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Interior/Exterior Environment . . . . . . . . . . . . . . . . . . . . . . 20 Meter Pit Environment. . . . . . . . . . . . . . . . . . . . . . . . . . 20 Appendix A: Recommended Equipment Appendix B: Checklist Table of Contents iiMTU Installation Guidelines Table of Contents MTU Installation Guidelinesiii WARNINGS, CAUTIONS, AND NOTES Always consult and adhere to all local and national safety codes, regulations, and standards.WARNING, CAUTION and Note statements are used throughout this anual to emphasize important and critical information to help you ensure safety and prevent product damage.These statements are defined below. WARNINGindicates a potentially hazardous situation which, if not avoided, could result in death or serious physical injury. CAUTIONindicates a situation, which, if not avoided, could result in damage to equipment, damage to software, loss of data or invalid results. NOTEindicates important supplemental information. FCC/IC Compliance The following statements cover the RF exposure guide and the field calibration procedure. FCC/IC RF Exposure Guide Aclara Technologies LLC low power RF devices and their antennas must be fixed-mounted on indoor or outdoor permanent structure(s) providing a separation distance of at least 20 cm from all persons during normal operation. This device is not designed (and it has no external connection) to operate in conjunction with any other antennas or transmitters. No other operating instructions for satisfying RF exposure compliance are needed. Field Calibration Procedure Aclara Technologies LLC low power RF devices have passed through extensive and multitask testing and calibration procedures while in the factory. Therefore, no additional calibration or adjustment is required in the field. Aclara Technologies LLC low power RF devices are shipped to the customer in the sealed enclosures. Thus, no adjustments can be made in the field, without breaking the factory sealed enclosure. ivMTU Installation Guidelines FCC/IC Compliance MTU Installation Guidelines1 OVERVIEW Meter Transmission Units (MTUs) are the endpoints of the STAR system. MTUs are permanently sealed devices that transmit regularly scheduled meter readings on an FCC licensed frequency to a Data Collector Unit, or DCU. Every remote mount Meter Transmission Unit (MTU) installation location presents its own set of variables. This document is intended to help guide installers by providing general information about UHF radio transmissions, MTUs, and Aclara recommended practices for installation. Failure to adhere to these guidelines may be detrimental to system operation. Introduction This document is intended to help guide installers by providing general information about UHF radio transmissions, MTUs, and Aclara recommended practices for installation. Failure to adhere to these guidelines may be detrimental to system operation. Support The Aclara Customer Portal (http://customer.aclaratech.com) provides a wide range of information that can serve as a starting point when you have a question. If, at any time, you would like to speak with a Aclara representative about any product or service or if you do not have a user name and password to access the Portal, please contact Support: Deployment Process MTU deployment can be broken down into three basic steps. These are: 1. Mounting the MTU 2. Routing and connecting the wiring 3. Programming and configuring the MTU The scope of t…

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ACLARA Technologies LLC 30400 Solon Road. Solon, OH 44139 440-528-7200 March 18 th 2014 Federal Communications Commission Office of Engineering and Technology Equipment Approval Services RE: Application for obtaining a transmitter approval Attached Application Form 731 FCC ID: LLB09010B1W Dear Sir or Madam: Aclara Technologies LLC wishes to obtain approval for a telemetry transceiver with FCC ID LLB09010B1W. The LLB09010B1W transceiver is used to transmit data from a utility meter to a data collection unit. The LLB09010B1W Transceiver device is the 2-way communication device, which includes a transmitter and a receiver. Complete information about LLB09010B1W device is documented in the attached application documentation including schematic, bill of material, photographs, block diagram, user manual, operation description, The LLB09010B1W transmitter was tested for conformance to the technical requirements of 90.201 Subpart I-General Technical Standards. Results of tests are attached to this application. The LLB09010B1W was found to comply with all technical requirements of 90.210. Sincerely, Siva Jambulingam Principal Engineer 440-528-7200 [email protected]

ACLARA Technologies LLC. 30400 Solon Road . Solon, OH 44139 440-528-7200 March 26 th 2014 FCC ID: LLB09010B1W PREVIOUS TYPE ACCEPTANCE The radio transceiver submitted (LLB09010B1W) herein is used as a telemetry device for the reading of utility meters. An operationally identical device (LLB6082) was previously submitted for Type Acceptance and received a Grant of Type Acceptance on March 4 th 1998.This earlier version has been in field service since the grant was issued. The block diagram and basic circuit configuration of the new product is identical to that of the original LLB6082. As detailed in “Description of Operation, the block diagram of the LLB09010B1W is similar to LLB6082 device with difference that new device is design to accommodate new application requirements, such: • 2-way communication. • Time synchronization within a complete AMR cell. • Complete AMR cell self testing and control. • To comply with newest regulations for electrical and gas utilities. Also, attached is a “Statement Concerning Compliance with Section 90.203 (j) (5)”. The identical statement was submitted with the application for Type Acceptance of the earlier LLB9975J device. STATEMENT CONCERNING COMPLIANCE WITH SECTION 90.203(J)(5) Introduction Section 90.203 (j)(5) of the Commission’s Rules on transmitters provides, in pertinent part: If the equipment [in the 150-174 and 421-512 MHz bands] is capable of transmitting data and has an overall bandwidth of 6,25 kHz or more, the equipment must be capable of supporting a minimum data rate of 4800 bits per second per 6.25 kHz of bandwidth. 1. Three parties interested in remote utility metering sought reconsideration of this provision to allow alternative showings of spectrum efficiency for low power frequency reuse systems. 2. The commission replied: [W]e will provide manufacturers with additional flexibility to design spectrally efficient transmitters. The commission’s Equipment Authorization Division may, on a case by case basis, grant type acceptance to equipment with slower bit rates than specified in Section 90.203(j)(3) and 90-203(j)(5) of our rules, provided that an acceptable technical analysis is submitted with the application, which demonstrate that the slower data rate will provide spectral efficiency than the standard data rate. 3. The present application is for automatic remote meter equipment, and falls squarely within the scope of this exception. When considered as part of a system, the device in question provides spectrum efficiency and channel utilization far excess of 4800 bits/sec per 6.25 kHz. Technical Analysis The device submitted for type acceptance is a Meter Transmitter Unit (MTU). When the system is implemented, an MTU is attached to each utility meter. The MTU periodically transmits meter readings Omni-directionally in transmissions lasting under one-tenth second each. Transmissions from different MTU are independent and uncorrelated. Data-collector Units (DCU) are mounted on a nominal 1 mile grid. A DCU receives and stores the transmissions from all the MTUs in its range. Once, daily, each DCU transfers the accumulated data to a central computer at the utility office via a cell phone mounted on the DCU. MTU bandwidth is 12.5 kHz, so a strict application of section 90.203(j)(5) would require the equipment to support a data rate of 9600 bits/sec. In fact, to minimize component cost and bit error rate, an individual MTU transmits at rate of 7200 bits/sec. The system achieves spectrum (emphasis added) efficiency not through a high bit rate in each individual MTU, but through a high level of frequency re-use achieved by deploying a large number of low-power short range transmitters. As detailed in the Appendix, a typical large installation of MTUs on a single 12.5 kHz channel can support data rates exceeding 100,000 bits/sec. This performance represents spectrum efficiency far in excess of that required under Section 90.203(j)(5). Where a typical commercial user of private land mobile radio spectrum, such as a delivery service, requires a pair of channels to provide two-way communication with dozens of trucks at most, the MTU is a part of a system that uses a single channel to service millions of users and to carry data representing billions of dollars in annual revenue. This is an extremely efficient use of the spectrum, and is consistent with the Commission’s purposes underlying Section 90.203(j)(5). An operationally identical MTU (LLB6082) received a grant of Type Acceptance on March 4, 1998. Automatic Meter Reading Systems incorporating this technology have been in service since March 4, 1998 and have incorporated tens of thousands of transmitters. The MTU described in this application for Certification represents an improved product. An earlier product (LLB5155) operating under the Commission rules then in effect has been in service at hundreds of locations since May of 1996. Public Interest Considerations. Public interest considerations support the development of Automatic Meter reading equipment, such as the device in question. Automatic Meter Reading equipment directly helps to keep consumer rates down in the time of rapidly increasing labor cost. The alternative, traditional door- to-door meter reading, is not only much more expensive, but dangerous for the meter readers, and necessarily exposes consumers to potential security risk in their homes. Equally important in a pro-competitive regulatory environment, Automatic Meter Reading equipment makes possible time –of-use billing, under which a customer’s utility rate varies with time of day or day of the week. Electric time-of-use billing, for example, typically requires a meter read every 15 minutes, which is not feasible without Automatic Meter Reading equipment. Frequent meter-reading is an important component of utility deregulation, because it enables new competitors to tailor service and rates to particular niche markets, profiles of demand, and competitive situations. Furth…

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NOTES: 1) MATERIAL: 4 MIL PRINTABLE POLYESTER/HIGH STRENGTH ACRYLIC SOLVENT ADHESIVE (AVERY) FASSON SPEC #72828 OR EQUIVALENT 2) BACKGROUND COLOR TO BE PANTONE 429 GRAY 3) TEXT TO BE MINIMUM OF 0.08" HIGH 4) TEXT COLOR TO BE BLACK 5) FCC / IC ID INFORMATION MAY BE INCLUDED IN BARCODE, BUT IS NOT REQUIRED D C B A A B C D SCALE: SIZE CAD FILE: DWG. NO. B SHEET1OF1 REV. DATE APPROVALS DRAWN CHECKED RESP ENG MFG ENG QUAL ENG UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES TOLERANCES ARE: FRACTIONS DECIMALS ANGLES MATERIAL FINISH DO NOT SCALE DRAWING APPLICATION USED ONNEXT ASSY 123 456 7 8 8 7 6 5 4 32 1 REVISIONS REV. DATE APPROVED SEE NOTES .XX=.010 .XXX= .005 .XXXX= .0005 1/2 1/64 WAD2/6/14 091-LLB09010B1 4:1 091-LLB09010B1 B 2/6/14 DESCRIPTION A BY WAD INITIAL RELEASE LABEL, FCC, MTU THE WRITTEN PERMISSION OF ACLARA RF SYSTEMS INC. IS PROHIBITED. ACLARA RF SYSTEMS INC. ANY REPRODUCTION IN PART OR WHOLE WITHOUT THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF (C) 2011 ACLARA RF SYSTEMS INC. ALL RIGHTS RESERVED. PROPRIETARY AND CONFIDENTIAL. BADDED "W" TO END OF NUMBERWAD3/20/14MD

Power Density Calculation for Aclara LLB09010B1W 15.247(i) Maximum Permissible Exposure The following calculations are provided to show a comparison to the Maximum Permissible Exposure (MPE) for the general population in an uncontrolled area even though the2009-010B2 MTU is categorically excluded from the necessity of a radio frequency exposure evaluation. The exclusion (2.1091) applies to Part 90 transmitters operating below 1.5 GHz with output below 1.5 Watts. Normal Field Operation of Model 2009-010B2: Frequency Range: 450 MHz – 470 MHz Transmit Power: 0.616 W (dipole equivalent power) Transmission Length: 60 mSec. Transmission Period: One transmission every 6 hours Extreme Values Used for the Calculation: Transmit Power: 0.616 W (dipole equivalent power) Transmission Length: 100 mSec. Transmission Period: Four transmissions every hour Average Power Calculation: RF exposure for the general population in uncontrolled areas is determined using transmitted power averaged over 30 minutes. The equation used in the calculation is: Pavg = P x Tx x TL/t Where Pavg is the average power, P is measured power output (mW), Tx is the number of transmission in 30 seconds, TL is the transmission length (Sec) and t is the number of seconds in 30 minutes. Therefore: Pavg = 616 mW x 3 x 0.10 Sec/30 min x 60 sec/min = 184.8 mW-Sec/1800 Sec = 0.102 mW Average Power Density Calculation: Average power density is calculated at a distance of 20 cm by using the following equation: S = Pavg x G/4 x π x r 2 where S is the average power density, Pavg is the average power, G is the gain of a dipole antenna and r is the distance from the transmitter. Therefore: S = 0.102 mW x 1.64/4 x 3.1416 x 20cm x 20cm = 0.1676 mw/5027 cm 2 = 0.33 uW/cm 2 Comparison of 2009-010B2 to MPE: The MPE for the general population in uncontrolled areas is 460/1500 = 0.3067 mW/cm 2 The average power density of the 09010B2 MTU is 0.33 uW/cm 2 , which is almost 10,000 times lower than the MPE of 0.3067 mW/cm 2 .

12955 Bellamy Brothers Blvd. Dade City, FL 33525 352-588-2209 TEST REPO RT Project Number 14151 Report Issue Date: 03/17/2014 Applicant: Aclara RF Systems 30400 Solon Road Solon, Ohio 44139 Product: Model - 101-2009-010B1W Description: Water Meter Transmitting Unit FCC ID: LLB09010B1W IC ID: 4546A-09010B1W Test dates: 03/07/2014 – 03/17/2014 Receive Date: 02/06/2014 For the purpose of demonstrating compliance with FCC Part 90 & Industry Canada RSS-119 & RSS:GEN Prepared by: Steven E. Hoke - EMC Site Manager FCC Registered Test Site Number: 160606 Industry Canada Registered Test Site Number: IC 2087A-1 This report may only be reproduced in full without written permission from Product Safety Engineering, Inc. Aclara RF Systems FCC ID:LLB09010B1W IC ID:4546A-09010B1W Page 1 of 11 Table of Contents Page 2 Table of contents Page 3-4 Test procedures Page 5 Equipment Calibration Page 6 Power Output and Spurious Emissions Page 7 Occupied Bandwidth Test Data Page 8 Frequency Stability vs. Temperature Page 9 Frequency Stability vs. Supply Voltage Page 10 Transient Stability (Separate report) Page 11 ERP Setup Photos Aclara RF Systems FCC ID:LLB09010B1W IC ID:4546A-09010B1W Page 2 of 11 Test Procedures EUT description: The Model - 101-2009-010B1W transceiver is designed to provide remote meter reading capability. The transceiver is attached to the meter with wiring. The transmitter provides a very short intermittent RF transmission to provide a remote reading of the meter. A microprocessor provides timing, control and data processing functions. The built in antenna is inaccessible to the user and no provision is made for an external antenna. The receiver can be used to request a meter reading or other options available in the system. Pow er Output: The EUT operates in the frequency range of (450 - 470) MHz. The first step in the measurement process was to measure the field strength of the f undamental frequency at the lowest, highest and middle operating frequency. These measurements are made in both the vertical and horizontal polarity. The maximum field strength is reported by raising and lowering the measuring antenna height between (1-4) meters and by rotating the EUT (360) degrees. The measurement distance is (3) meters. Measurements made per ANSI/TIA-603-C-2004. The field strength measurements continue as described above for up to the tenth harmonic of each f undamental frequency. Once the field strength of each signal is recorded, the EUT is replaced with a substitution antenna and signal generator. The substitution antenna is placed at the same height as the EUT had been. The combination of antenna and signal generator is then adjusted to reproduce the recorded field strength at each frequency. The ERP is then calculated by the following: ERP = PG - CL + ANT ERP = Effective Radiated Power (dBm) PG = Signal Generator Output (dBm) CL = Cable loss (dB) ANT = antenna gain (dBd) dBd = (antenna gain dBi) - (2.2 dB) Occupied Bandw idth: The occupied bandwidth was measured with the EUT set to the middle of the operating frequency range. The emissions mask used was that specified in Part 90.210 (d). Radiated Spurious Emissions: The radiated spurious emissions measurements were measured with the EUT set to low, medium and high transmit frequencies. Based upon the low output power of this device, all spurious and harmonic signals are limited to (-20) dBm. This is based upon the calculation stated in 90.210(d)(3). The field strength of the spurious emissions were measured in the same manner as the power output measurements and then the substitution method was used to establish the power level expressed in dBm. Measurements made per ANSI/TIA-603-C-2004. Frequency Stability vs. Supply Voltage: One of the internal batteries was disconnected and replaced with an external variable power supply. The frequency was measured at the normal battery voltage of (7.20) VDC and again with the external power supply adjusted to an (85%) level or (6.12) volts. This was repeated with the external DC voltage adjusted to (8.28) VDC. The maximum allowed deviation is (2.5) ppm or (1,150) Hz at (460) MHz. Aclara RF Systems FCC ID:LLB09010B1W IC ID:4546A-09010B1W Page 3 of 11 Frequency Stability vs. Temperature: The fundamental frequency was measured at an ambient temperature of (20) degrees C and recorded. The transmitter was then placed in an environmental chamber that was adjusted until a low temperature of (-30) degrees C was achieved. The transmitter was allowed to stabilize for (20) minutes at this temperature and then the frequency was again measured with a spectrum analyzer. The chamber was allowed to warm to (-20) degrees C and the measurement process was repeated. The environment was moved to a maximum temperature of (+70) degrees C in (10) degree increments, allowed to stabilize for (10) minutes and the frequency was re-measured. Transient Frequency Behavior: Connect the output of the transmitter under test (EUT) to an attenuator, and this to a directional coupler. Connect an RF Modulation analyzer to the coupled output of the directional coupler, and connect the output of the modulation analyzer to the input on a storage oscilloscope. The output of the directional coupler is mixed, via an RF combining network, with the output of a signal generator. Verify that the EUT signal level present at the combining network output is approximately 40 dB below the maximum input level of the modulation analyzer. Set the signal generator at the same frequency as the EUT, modulated with a 1 kHz tone, with an FM deviation equal to the assigned channel spacing (+12.5 kHz). Adjust the signal generator to provide 20 dB less power at the combiner. . Connect the output of the RF combiner to the modulation analyzer, and the modulation analyzer modulation output port to a vertical input channel of the storage scope. Adjust the horizontal sweep rate on the oscilloscope to 10 msec/div, and the vertical amplitude to display the 1 kHz tone o…

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12955 Bellamy Brothers Blvd. Dade City, FL 33525 352-588-2209 TEST REPO RT Project Number 14151 Report Issue Date: 03/17/2014 Applicant: Aclara RF Systems 30400 Solon Road Solon, Ohio 44139 Product: Model - 101-2009-010B1W Description: Water Meter Transmitting Unit FCC ID: LLB09010B1W IC ID: 4546A-09010B1W Test dates: 03/07/2014 – 03/17/2014 Receive Date: 02/06/2014 For the purpose of demonstrating compliance with FCC Part 90 & Industry Canada RSS-119 & RSS:GEN Prepared by: Steven E. Hoke - EMC Site Manager FCC Registered Test Site Number: 160606 Industry Canada Registered Test Site Number: IC 2087A-1 This report may only be reproduced in full without written permission from Product Safety Engineering, Inc. Aclara RF Systems FCC ID:LLB09010B1W IC ID:4546A-09010B1W Page 1 of 11 Table of Contents Page 2 Table of contents Page 3-4 Test procedures Page 5 Equipment Calibration Page 6 Power Output and Spurious Emissions Page 7 Occupied Bandwidth Test Data Page 8 Frequency Stability vs. Temperature Page 9 Frequency Stability vs. Supply Voltage Page 10 Transient Stability (Separate report) Page 11 ERP Setup Photos Aclara RF Systems FCC ID:LLB09010B1W IC ID:4546A-09010B1W Page 2 of 11 Test Procedures EUT description: The Model - 101-2009-010B1W transceiver is designed to provide remote meter reading capability. The transceiver is attached to the meter with wiring. The transmitter provides a very short intermittent RF transmission to provide a remote reading of the meter. A microprocessor provides timing, control and data processing functions. The built in antenna is inaccessible to the user and no provision is made for an external antenna. The receiver can be used to request a meter reading or other options available in the system. Pow er Output: The EUT operates in the frequency range of (450 - 470) MHz. The first step in the measurement process was to measure the field strength of the f undamental frequency at the lowest, highest and middle operating frequency. These measurements are made in both the vertical and horizontal polarity. The maximum field strength is reported by raising and lowering the measuring antenna height between (1-4) meters and by rotating the EUT (360) degrees. The measurement distance is (3) meters. Measurements made per ANSI/TIA-603-C-2004. The field strength measurements continue as described above for up to the tenth harmonic of each f undamental frequency. Once the field strength of each signal is recorded, the EUT is replaced with a substitution antenna and signal generator. The substitution antenna is placed at the same height as the EUT had been. The combination of antenna and signal generator is then adjusted to reproduce the recorded field strength at each frequency. The ERP is then calculated by the following: ERP = PG - CL + ANT ERP = Effective Radiated Power (dBm) PG = Signal Generator Output (dBm) CL = Cable loss (dB) ANT = antenna gain (dBd) dBd = (antenna gain dBi) - (2.2 dB) Occupied Bandw idth: The occupied bandwidth was measured with the EUT set to the middle of the operating frequency range. The emissions mask used was that specified in Part 90.210 (d). Radiated Spurious Emissions: The radiated spurious emissions measurements were measured with the EUT set to low, medium and high transmit frequencies. Based upon the low output power of this device, all spurious and harmonic signals are limited to (-20) dBm. This is based upon the calculation stated in 90.210(d)(3). The field strength of the spurious emissions were measured in the same manner as the power output measurements and then the substitution method was used to establish the power level expressed in dBm. Measurements made per ANSI/TIA-603-C-2004. Frequency Stability vs. Supply Voltage: One of the internal batteries was disconnected and replaced with an external variable power supply. The frequency was measured at the normal battery voltage of (7.20) VDC and again with the external power supply adjusted to an (85%) level or (6.12) volts. This was repeated with the external DC voltage adjusted to (8.28) VDC. The maximum allowed deviation is (2.5) ppm or (1,150) Hz at (460) MHz. Aclara RF Systems FCC ID:LLB09010B1W IC ID:4546A-09010B1W Page 3 of 11 Frequency Stability vs. Temperature: The fundamental frequency was measured at an ambient temperature of (20) degrees C and recorded. The transmitter was then placed in an environmental chamber that was adjusted until a low temperature of (-30) degrees C was achieved. The transmitter was allowed to stabilize for (20) minutes at this temperature and then the frequency was again measured with a spectrum analyzer. The chamber was allowed to warm to (-20) degrees C and the measurement process was repeated. The environment was moved to a maximum temperature of (+70) degrees C in (10) degree increments, allowed to stabilize for (10) minutes and the frequency was re-measured. Transient Frequency Behavior: Connect the output of the transmitter under test (EUT) to an attenuator, and this to a directional coupler. Connect an RF Modulation analyzer to the coupled output of the directional coupler, and connect the output of the modulation analyzer to the input on a storage oscilloscope. The output of the directional coupler is mixed, via an RF combining network, with the output of a signal generator. Verify that the EUT signal level present at the combining network output is approximately 40 dB below the maximum input level of the modulation analyzer. Set the signal generator at the same frequency as the EUT, modulated with a 1 kHz tone, with an FM deviation equal to the assigned channel spacing (+12.5 kHz). Adjust the signal generator to provide 20 dB less power at the combiner. . Connect the output of the RF combiner to the modulation analyzer, and the modulation analyzer modulation output port to a vertical input channel of the storage scope. Adjust the horizontal sweep rate on the oscilloscope to 10 msec/div, and the vertical amplitude to display the 1 kHz tone o…

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