NU9TX0669-0100Propane Level Gauge Monitor Transmitter

FCC ID: NU9TX0669-0100 SECTION 7 USER'S MANUAL FCC ID: NU9TX0669-0100 FCC ID: NU9TX0669-0100

FCC ID: NU9TX0669-0100

FCC ID: NU9TX0669-0100

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 April 26, 2001 RE: Robertshaw Industrial Products Division FCC ID: NU9TX0669-0100 I have the following comments on this Application: 1.) Processing gain must be an empirically measured value – not calculated. Please supply test results using the jammer margin test suggested by FCC. 2.) Although I understand the philosophy behind the spectral power processing gain test, I am unable to be assured the 1 sec per 3 KHz rule is maintained. For consistency, please perform this test using “traditional” spectrum analyzer settings. 3.) FYI: 6dB bandwidth is to be measured not from peat to worst case 6dB point, but from lower frequency to upper frequency 6dB points. 4.) I am not sure this device meets the intent of an “information bearing communication system” as defined in the definitions of section 2.1. Please address via attestation. 5.) Operational description is missing. William H. Graff Examining Engineer President and Director of Engineering mailto:[email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 April 28, 2001 RE: Robertshaw Controls Company FCC ID: NU9TX0669-0100 Attention: Tim Johnson US Technologies, Inc. Tim, I have done a bit of detective work on the web on this Axonn Corporation daughterboard, and have generally satisfied my concerns on processing gain. But my poking around did raise one new question I would like answered: 1.) The power output rating requested on the Grant is 63mW. The power rating on the Axonn transceiver (unless I am mistaken) is 100mW. Please resolve. Regards, William H. Graff Examining Engineer President and Director of Engineering mailto:[email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

FCC ID: NU9TX0669-0100 SECTION 5 PHOTOGRAPHS FCC ID: NU9TX0669-0100 PHOTOS OF THE TESTED EUT The following photos are attached: Photo 1.EUT, with Cable Harness Photo 2.EUT, Front View Photo 3.EUT, Rear View Photo 4.EUT, Bottom View Photo 5.EUT, Front View Cover Removed Photo 6.EUT, Rear View Cover Removed Photo 7.EUT, Top View of TX Board Photo 8.EUT, Bottom View of TX Board FCC ID: NU9TX0669-0100 Photo 1.EUT, with Cable Harness FCC ID: NU9TX0669-0100 Photo 2.EUT, Front View FCC ID: NU9TX0669-0100 Photo 3.EUT, Rear View FCC ID: NU9TX0669-0100 Photo 4.EUT, Bottom View

FCC ID: NU9TX0669-0100 SECTION 3 LABELING INFORMATION FCC ID: NU9TX0669-0100

FCC ID: NU9TX0669-0100 Photo 5.EUT, Front View Cover Removed FCC ID: NU9TX0669-0100 Photo 6.EUT, Rear View Cover Removed FCC ID: NU9TX0669-0100 Photo 7.EUT, Top View of TX Board FCC ID: NU9TX0669-0100 Photo 8.EUT, Bottom View of TX Board

FCC ID: NU9TX0669-0100 GENERAL INFORMATION 1.1Product Description The Equipment Under Test (EUT) is a Robertshaw Industrial Products Division, Model Centeron Propane Gauge Monitor. The device is a single channel 923.58 MHz Direct Sequence Transmitter which transmits signals that indicate the status level sensing and temperature inputs to a receiver. The transmitter derives its power from an internally mounted 3 VDC battery.

Robertshaw Industrial Products Division FCC Part 15, Certification Application Centeron Propane Gauge Monitor April 23, 2001 FCC ID: NU9TX0669-0100 MEASUREMENT/TECHNICAL REPORT COMPANY NAME:Robertshaw Industrial Products Division MODEL:Centeron Propane Gauge Monitor FCC ID:NU9TX0669-0100 DATE:April 23, 2001 This report concerns (check one): Original grant X Class II change_____ Equipment type: 900 MHz Direct Sequence Spread Spectrum TX Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? yes_____ No X If yes, defer until:_________________ date N.A. agrees to notify the Commission by N.A. date of the intended date of announcement of the product so that the grant can be issued on that date. Report prepared by: United States Technologies, Inc. 3505 Francis Circle Alpharetta, GA 30004 Phone Number: (770) 740-0717 Fax Number: (770) 740-1508 FCC ID: NU9TX0669-0100 TABLE OF CONTENTS AGENCY AGREEMENT LETTER OF CONFIDENTIALITY SECTION 1 GENERAL INFORMATION 1.1Product Description 1.2Related Submittal(s) SECTION 2 TESTS AND MEASUREMENTS 2.1Configuration of Tested EUT 2.2Test Facility 2.3Test Equipment 2.4Modifications 2.5Test Procedure and Results 2.6Antenna Description 2.7Peak Power (Antenna Conducted at Antenna Terminal) 2.8Antenna Conducted Spurious Emissions 2.9Peak Radiated Spurious Emissions 2.10Average Radiated Spurious Emissions 2.11Minimum 6 dB Bandwidth 2.12Power Spectral Density 2.13Processing Gain 2.14Power Line Conducted Emissions for Transmitter 2.15Radiated Emissions for Digital Device & Receiver (if Applicable) 2.16Power Line Conducted for Digital Device & Receiver (if Applicable) SECTION 3 LABELING INFORMATION SECTION 4 BLOCK DIAGRAM(S)/ SCHEMATIC(S) / PARTS LIST SECTION 5 PHOTOGRAPHS SECTION 6 RF EXPOSURE INFORMATION SECTION 7 USER'S MANUAL FCC ID: NU9TX0669-0100 LIST OF FIGURES AND TABLES 1)Test Configuration 2) Photograph(s) for Spurious and Digital Device Emissions 3) Peak Power Output 4) Antenna Conducted Spurious Emissions 5) Peak Radiated Spurious Emissions 6) Average Radiated Spurious Emissions 7) Minimum 6 dB Bandwidth 8) Power Spectral Density TABLES 1)EUT and Peripherals 2) Test Instruments 3) Peak Power Output 4) Peak Radiated Spurious Emissions 5) Average Radiated Spurious Emissions 6) Power Spectral Density 7) Conducted Emissions Data (Transmitter) 8) Radiated Emissions Data (Digital Device) 9) Conducted Emissions Data (Digital Device) FCC ID: NU9TX0669-0100 SECTION 1 GENERAL INFORMATION FCC ID: NU9TX0669-0100 GENERAL INFORMATION 1.1Product Description The Equipment Under Test (EUT) is a Robertshaw Industrial Products Division, Model Centeron Propane Gauge Monitor. The device is a single channel 923.58 MHz Direct Sequence Transmitter which transmits signals that indicate the status level senging and temperature inputs to a receiver. The transmitter derives its power from an internally mounted 3 VDC battery. FCC ID: NU9TX0669-0100 1.2Related Submittal(s)/Grant(s) The EUT will be used with part of a system to send/receive data. The transmitter presented in this report will be used with a previously approved receiver. The EUT is subject to the following authorizations: a)Certification as a transmitter The information contained in this report is presented for the certification authorization(s) for the EUT. SECTION 2 TESTS AND MEASUREMENTS FCC ID: NU9TX0669-0100 TEST AND MEASUREMENTS 2.1 Configuration of Tested System The sample was tested per ANSI C63.4, Methods of Measurement from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz (1992). Conducted and radiated emissions data were taken with the test receiver or spectrum analyzer's resolution bandwidth adjusted to 9 kHz and 120 kHz, respectively. All measurements are peak unless stated otherwise. The video filter associated with the spectrum analyzer was off throughout the evaluation process. Interconnecting cables were manipulated as necessary to maximize emissions. Interconnecting cables were manipulated as necessary to maximize emissions. A block diagram of the tested system is shown in Figure 1. Test configuration photographs for spurious and fundamental emissions are shown in Figure 2. The EUT is designed to be mounted on top of a propane tank with the transmitter axis of symmetry positioned in the vertical polarity. Therefore the EUT was positioned in an upright position for all radiated tests performed. The sample used for testing was received by U.S. Technologies on February 8, 2001 in good condition. 2.2 Test Facility Testing was performed at US Tech's measurement facility at 3505 Francis Circle, Alpharetta, GA. This site has been fully described and submitted to the FCC, and accepted in their letter marked 31040/SIT. Additionally this site has also been fully described and submitted to Industry Canada (IC), and has been approved under file number IC2982. 2.3 Test Equipment Table 2 describes test equipment used to evaluate this product. FCC ID: NU9TX0669-0100 2.4 Modifications In order to bring the EUT into compliance with FCC limits for the transmitter portion of the EUT, the following modifications were made: 1) A additional tie point was necessary from the analog ground plane to the RF ground plane near J3 (solder side of board). Robertshaw Industrial Products Division/Axonn L.L.C agrees to incorporate the above change in all production models of the equipment. FCC ID: NU9TX0669-0100 FIGURE 1 TEST CONFIGURATION Transmitter (EUT) Horizontal Cyl Gauge 5’ u FCC ID: NU9TX0669-0100 Test Date:February 27, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor FIGURE 2a Photograph(s) for Spurious Emissions (Front) FCC ID: NU9TX0669-0100 Test Date:February 27, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor FIGURE 2b Photograph(s) for Spurious Emissions (Back) FCC ID: NU9TX0669-0100 Test Date:March 10, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Divis…

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FCC ID: NU9TX0669-0100 2.12 Power Spectral Density FCC Section 15.247(d) The transmitter power spectral density averaged over any 1 second interval is given in Table 7 and Figure 8. If the EUT incorporates different spreading codes or data rates these were each investigated and the one which produced the smallest 6 dB bandwidth was selected for test. The manufacturer provided a sample with a pigtail connected across the antenna leads on the PCB . This test was performed by connecting the pigtail directly to the spectrum analyzer. FCC ID: NU9TX0669-0100 TABLE 6 POWER SPECTRAL DENSITY Test Date:April 27, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor Frequency (GHz) Test Data (dBm) Normalized to 1 Hz FCC Limit (dBm) 923.5345-0.28.0 Tester Signature: Name: Tim R. Johnson FCC ID: NU9TX0669-0100 Figure 8 Power Spectral Density 15.247(d)

FCC ID: NU9TX0669-0100 Test Date:February 27, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor FIGURE 2a Photograph(s) for Spurious Emissions (Front) FCC ID: NU9TX0669-0100 Test Date:February 27, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor FIGURE 2b Photograph(s) for Spurious Emissions (Back) FCC ID: NU9TX0669-0100 Test Date:March 10, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor FIGURE 2c Photograph(s) for Digital Device Emissions (Front) Since the EUT’s digital devices circuitry is used only to enable operation of the transmitter and does not control additional functions or capability, testing of the digital device emissions was deemed not necessary. FCC ID: NU9TX0669-0100 Test Date:March 10, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor FIGURE 2d Photograph(s) for Digital Device Emissions (Back) Since the EUT’s digital devices circuitry is used only to enable operation of the transmitter and does not control additional functions or capability, testing of the digital device emissions was deemed not necessary. FCC ID: NU9TX0669-0100 Test Date:March 10, 2001 UST Project:01-0121 Customer:Robertshaw Industrial Products Division Model:Centeron Propane Gauge Monitor FIGURE 2e Photograph(s) for Digital Device Conducted Emissions Conducted Emissions were considered not applicable since the EUT is battery powered.