PY20920HPBattery Monitoring System

BattGuard™ Installation Instructions and User’s Guide PRELIMINARY Release X1 February 2002 WARNING: Battery systems have the potential to cause severe burns, shocks, and other serious injuries. Graviton, Inc. strongly advises that only persons specifically trained in the techniques and procedures necessary to ensure personal safety while working with high-energy batteries install or maintain the BattGuard battery monitoring system. BattGuard™ Release X1 COPYRIGHT Copyright ©2002 Graviton, Inc. All Rights Reserved. No part of this document may be reproduced or transmitted in any form without the prior written consent of Graviton, Inc. Graviton, Inc. 9820 Towne Centre Drive San Diego, CA 92121-1974 858.646.0774 www.graviton.com Preliminary edition: February 2002 Printed in U.S.A. ACKNOWLEDGMENTS WINDOWS® and Internet Explorer are registered trademarks of Microsoft Corporation. NOTICE The information contained in this document is subject to change without notice. Graviton, Inc. assumes no responsibility for any errors that may appear in this document, nor does it make expressed or implied warranty of any kind with regard to this material, including, but not limited to, implied warranties of merchantability and fitness for a particular purpose. Graviton, Inc. shall not be liable for incidental or consequential damages in connection with, or arising out of the furnishing, performance, or use of this document and the hardware product and program material which it describes. ii Preliminary Release X1 Contents 1 Introduction..............................................1-1 Welcome..........................................................................1-1 About This Document .....................................................1-1 Audience...................................................................1-1 Notes and Warnings .................................................1-2 FCC Compliance Information.........................................1-2 Customer Support............................................................1-3 2 Installation................................................2-1 Before You Begin............................................................2-1 Unpacking and Inventory.........................................2-1 Important Safety Precautions...................................2-2 Overview of Installation Steps........................................2-3 Hardware Installation Instructions..................................2-3 Telesensor Installation Procedure............................2-4 BattGuard Telesensor Front Panel...........................2-6 End-of-String Master Installation Procedure...........2-7 Software Installation Instructions...................................2-7 Hardware Requirements...........................................2-7 Software Requirements............................................2-8 Software Installation Procedure...............................2-8 Verifying the BattGuard Software Installation........2-8 3 Using BattGuard......................................3-1 Understanding the BattGuard Screen.............................3-1 The Data Tab ............................................................3-1 The Alarms Tab........................................................3-2 The Unknown Telesensors Tab ...............................3-3 Charting Voltages and Temperature...............................3-4 Monitoring Alarms..........................................................3-5 Exporting Data................................................................3-6 Preliminary Release X1 iii Contents 4 Setting Up Battery Strings.....................4-1 Telesensors Installed – On-Line Configuration.............4-1 Telesensors Not Installed – Off-Line Configuration......4-4 Modifying and Deleting String Settings .........................4-7 5 Setting Up Alarms...................................5-1 6 Appendices..............................................6-1 Appendix A – Battery Diagnostics.................................6-3 Appendix B – IEEE Recommended Battery Maintenance Programs....................................................6-5 Vented Lead-Acid Batteries for Stationary Applications (Flooded Batteries) (IEEE STD 450-1995)..................................................................6-5 Valve-Regulated Lead-Acid (VRLA) Batteries for Stationary Applications (IEEE STD 1188- 1996).........................................................................6-6 iv Preliminary Release X1 1 Introduction Welcome With the BattGuard™ Battery Monitoring System, you’ll be able to continuously monitor the health of the individual batteries used in your battery back-up system. You will have assurance that they will function properly when you need them most – during a power outage. BattGuard includes the following components:
BattGuard Telesensors – specially designed transceivers that are connected to each battery cell in your backup system and monitor the health of your backup system. The Telesensors measure voltage, current and temperature and transmit the data every 15 minutes using a performance optimized 2.4GHz direct sequence spread spectrum (DSSS) radio.
End-of-String master – special Telesensor that receives the battery data from the Telesensors and provides a radio to serial (PC) interface.
DCU (Data Collection Unit) – laptop computer that collects the following data for each battery: battery current measurements, voltage, and temperature.
BattGuard software – specialized computer program used to configure the Telesensors, graphically display battery data, and export the data for further analysis using other programs such as Microsoft Excel. About This Document This guide includes procedures to help you install and use the BattGuard Battery Monitoring System. Audience Information in this guide is directed to field engineers and technicians, customer engineers, technicians, and contracted installation personnel with background in the techn…

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11.0592MHZ Crystal BALUN 2.400-2.480 BPF Controller (SOC) Radio (RF ASIC) 24 MHZ Crystal (+/- 30ppm) Power Supply Circuits Analog Inputs Serial I/O (115200 b/s typ.) DC Power (5.5 - 40V Battery) Antenna (On board) fvco = 3,000,000[ 16(128-M)+(31-A)/2 ] A = 0 to 32 M= 77 or 78 Where: (M <= 32 + A) 2403.0 - 2479.5 MHz (DSSS 1.5 Mc/s) (1.5 MHz Channels) Modulation: FM (525kHz typ.) P N Data Rate =32k b/s data (+4k b/s control) IF (Direct Conversion) 260k Hz

Jon, Please find the attached responses. Also, the client informs me that they already have a product rated at 25 mW with the FCC ID number PY20920. I am also attaching a new label with their ID number for this product (PY20920HP)and a Form 731 with the correct ID number. Kind Regards, Tom -----Original Message----- From: Jon Curtis [mailto:[email protected] ] Sent: Friday, March 29, 2002 1:15 PM To: Tom Tidwell Cc: Curtis-Straus TCB Subject: FCC ID: PY20920 Hi Tom, We have the following issues to resolve to grant this application: 1. As previously stated, we need a new photograph to replace the fuzzy one in the internal photo exhibit. Please find attached photos. 2. The device can use source voltages from 5.5 to 40V DC. This seems to be beyond the scope of the FCC guidance to use a "fresh" battery during testing. This device can use all kinds of fresh batteries. Please provide measurements of output power variation at one channel for 4.6 V and 46 V. Please refer to attached test report page 12. The rf power output was measured at 4.6Vdc and 46 Vdc using a variable DC supply. The rf output level did not vary more than 0.2 dB. 3. As previously stated, FCC guidance states that the processing gain needs to be performed on this unit and not on a reference design. Please provide processing gain data for this unit. We note the justification in your email of 3/28/02 and we will forward it to the FCC for review if you desire. Please find attached processing gain measurement data on the 920 transmitter. 4. Please tell us the spreading rate utilized by the DSS scheme. 1.5 Mc/Sec. See technical description and processing gain data. -- Jon D. Curtis, P.E. Director of Engineering Curtis-Straus LLC NRTL TCB One Stop Laboratory for NEBS, EMC, Product Safety, and Telecom Testing. 527 Great Road Littleton, MA 01460 USA Voice 978-486-8880 Fax 978-486-8828 email: [email protected] WWW.CURTIS-STRAUS.COM

43.37 1.71 59.37 2.34 4X R 3.68 .15 4.70 .19 CLEAR TRANSPARENT MATERIAL 5X 3.22 .13 0 0 4.29 .17 9.37 .37 14.45 .57 19.53 .77 24.61 .97 40.64 1.60 13.21 .52 2.87 .11 3.20 .13 33.53 1.32 4.83 .19 MODEL #: 0920 FCC ID: PY20920HP CON TX LQ RX STA BattGuard Telesensor CUSTOMER CARE: 1-866-217-3182 ALL OTHER TEXT: WHITE, ARIAL PT 6 CHARACTORS TM LOGO: COLOR: (ALL) WHITE FONT: FUTURA EXTRABOLD BLACK BACKGROUND COLOR: WHITE FONT: FUTURA EXTRABOLD PT 11 CHARACTORS SCALE:1:1 SIZEDWG. NO. A REV. MATERIAL FINISH -- DO NOT SCALE DRAWINGAPPLICATION USED ONNEXT ASSY DIMENSIONS ARE IN INCHES TOLERANCES: ANGULAR: MACH 1.0 DEGREE ONE PLACE DECIMAL .1 TWO PLACE DECIMAL .01 THREE PLACE DECIMAL .005 NAME DATE DRAWN CHECKED ENG APPR. MFG APPR. Q.A. SHEET 1 OF 1WEIGHT: COMMENTS: REVISIONS DESCRIPTION REV. DATE THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF <INSERT COMPANY NAME HERE>. ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF <INSERT COMPANY NAME HERE> IS PROHIBITED. PROPRIETARY AND CONFIDENTIAL ZONE R.HARRIS 4/9/02 X1 Label Top Enclosure W/FCC 092-000116-02 X1 Preliminary 4/9/02 013-000200-00 013-000100-00 11025 N. Torrey Pines Rd La Jolla, CA 92037-1030 4/9/02R.HARRIS C.GARRET B.GUEST J.FARENBAUGH 4/9/02 .005" LEXAN 8B35 .002" 3M 467 ADHESIVE 4/9/02 4/9/02 PROJ. ENG S.BOTTS4/9/02

Top of PWB Bottom of PWB Beneath Shield Antenna

tech.descr 3/22/02 Theory of Operation For the Model 920 (Graviton BattGuard TM Telesensor) 1. Introduction. The Model 920 Radio is a low power, 2.4GHz Direct Sequence Spread Spectrum (DSSS) telemetry transceiver (or Telesensor) intended for monitoring of industrial battery systems. Intended operating frequencies are in the unlicensed Industrial Scientific and Medical (ISM) band. A Telesensor consists of a highly integrated RF ASIC and mixed signal System on a Chip (SOC) microcontroller. A typical installation consists of several Telesensors controlled by a single master or WAN gateway product as shown in Figure 1. In its simplest form one telesensor assumes the role of the master and is connected into a Personal Computer (PC) or similar monitoring device. TelesensorTelesensorTelesensor MasterCOM Figure 1 Typical System 2. Operation. The block diagram is shown in Figure 2. Data gathered by the SOC via the analog input interface are stored. The SOC also controls the RF ASIC. A Phase Lock Loop (PLL) voltage controlled oscillator (VCO) internal to the RF ASIC accomplishes the frequency control. All of the frequencies are derived from a 24MHz crystal controlled reference oscillator. Since the receiver uses a direct conversion to base band, the VCO simply tunes to the center frequency. May Contain Proprietary Information 1 of 5 tech.descr 3/22/02 11.0592MHZ Crystal BALUN 2.400-2.480 BPF Controller (SOC) Radio (RF ASIC) 24 MHZ Crystal (+/- 30ppm) Power Supply Circuits Analog Inputs Serial I/O (115200 b/s typ.) DC Power (5.5 - 40V Battery) fvco = 3,000,000[ 16(128-M)+(31-A)/2 ] A = 0 to 32 M= 77 or 78 W here: (M <= 32 + A) 2403.0 - 2479.5 MHz (DSSS 1.5 Mc/s) (1.5 MHz Channels) Modulation: FM (525kHz typ.) P N Data Rate =32k b/s data (+4k b/s control) IF (Direct Conversion) 260k Hz Figure 2 Block Diagram The center frequency of operation is determined PLL reference, which is divided by two internal counters (A and M). Table 1 shows the valid range of operation of the VCO. Table 1 PLL Programming Channel Freq (MHz) Fref (MHz) M count A count 1 2403.00 24 78 29 2 2404.50 24 78 28 3 2406.00 24 78 27 4 2407.50 24 78 26 5 2409.00 24 78 25 6 2410.50 24 78 24 7 2412.00 24 78 23 8 2413.50 24 78 22 9 2415.00 24 78 21 10 2416.50 24 78 20 11 2418.00 24 78 19 12 2419.50 24 78 18 13 2421.00 24 78 17 14 2422.50 24 78 16 15 2424.00 24 78 15 16 2425.50 24 78 14 17 2427.00 24 78 13 18 2428.50 24 78 12 19 2430.00 24 78 11 20 2431.50 24 78 10 21 2433.00 24 78 9 22 2434.50 24 78 8 23 2436.00 24 78 7 24 2437.50 24 78 6 25 2439.00 24 78 5 26 2440.50 24 78 4 27 2442.00 24 78 3 28 2443.50 24 78 2 May Contain Proprietary Information 2 of 5 tech.descr 3/22/02 Channel Freq (MHz) Fref M count A count (MHz) 29 2445.00 24 78 1 30 2446.50 24 78 0 31 2448.00 24 77 31 32 2449.50 24 77 30 33 2451.00 24 77 29 34 2452.50 24 77 28 35 2454.00 24 77 27 36 2455.50 24 77 26 37 2457.00 24 77 25 38 2458.50 24 77 24 39 2460.00 24 77 23 40 2461.50 24 77 22 41 2463.00 24 77 21 42 2464.50 24 77 20 43 2466.00 24 77 19 44 2467.50 24 77 18 45 2469.00 24 77 17 46 2470.50 24 77 16 47 2472.00 24 77 15 48 2473.50 24 77 14 49 2475.00 24 77 13 50 2476.50 24 77 12 51 2478.00 24 77 11 52 2479.50 24 77 10 Actual data is transferred 8-bytes at a time at a 32k bits-per-second (bps) data rate. The receiver continues scanning the channel list until a master is detected. The transmitters spread the data using a Pseudorandom Numerical (PN) sequence with a chipping rate of 1.5Megachips per second. When the receiver locks to the PN sequence it can read the control channel and determine if the sampled data can be sent. The master only occupies any single channel for a predetermined number of milliseconds before switching to a new frequency. Data is transferred in a Time Division Duplex (TDD) format only transmitting 50% in any given frame. The frame consists of two data packets: a 12-bit preamble, an 8-bit sync byte, and an 8-bit control byte. The packet also includes a 4-bit CRC post amble. A data diagram is shown in Figure 3. Once in sync, the slave begins to transmit, the master locks to the slaves PN sequence, and master and slave alternately transmit for approximately 1 millisecond in the 2 milliseconds long frame. A total of 96 bits are transmitted and transferred in each packet. May Contain Proprietary Information 3 of 5 tech.descr 3/22/02 12-bit Preamble 8-bit Sync 8-bit Data 64-bit Data Payload 4- bit 1288 64-bit Data Payload 41288 64-bit Data Payload 4 1288 64-bit Data Payload 41288 64-bit Data Payload 4 Master: Transmit Receive TransmitReceive Slave: 960 uS 2000 uS 12 12 120 uS 40 us Earliest Expected arrival from Slave 50 us Latest Expected arrival From Slave ( @ 1- mile distance from Master ) Figure 3 Data Frame Format In actual operation, the system periodically (several minutes typically) the SOC wakes up and tunes the receiver to various channels in search of a master. The system is designed to allow only one master/telesensor pair to be transmitting at any given time. A controlling node (master) is periodically beaconing on each channel in the ISM band. The master transmitter either ready to accept a new telesensor on a channel or is currently communicating with one. The status is communicated in the 8-bit control channel. After the data is transferred the telesensor switches off its transmitter and goes back to sleep mode. The master also stops transmitting on this channel and retunes to another channel, this prevents any one channel from being used on a continuous basis, and if the channel is clear the master begins beaconing for the next telesensor. If no telesensors are found within a certain time interval, the master will again change its beaconing frequency. 3. Channels. The Model 920 divides up the allotted ISM band into 51 channels each approximately 1.5 MHz wide. The actual channels of operation within the ISM band are shown in Table 2. May Contain Proprietary Information 4 of 5 tech.descr 3/22/02 Table 2 Channels of Operation Channel C…

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Nemko Test Report: 2L0103RUS3 Applicant: Graviton 9820 Towne Centre Drive San Diego, CA 92121 Equipment Under Test: BattGuard
Telesensor transmitter (E.U.T.) Model: 0920 In Accordance With: FCC Part 15, Subpart C, 15.247 Direct Sequence Spread Spectrum Transmitters Tested By: Nemko Dallas Inc. 802 N. Kealy Lewisville, Texas 75057-3136 Authorized By: Tom Tidwell, Wireless Group Manager Date: 3/19/02 Total Number of Pages: 44 Nemko Dallas FCC PART 15, SUBPART C DIRECT SEQUENCE SPREAD SPECTRUM TRANSMITTER EQUIPMENT: BattGuard
Telesensor transmitter 0920 PROJECT NO.: 2L0103RUS3 Table of Contents Section 1. Summary of Test Results.......................................................................3 Section 2. Equipment Under Test (E.U.T.)............................................................5 Section 3. Minimum 6 dB Bandwidth ....................................................................8 Section 4. Maximum Peak Output Power............................................................12 Section 5. RF Exposure ........................................................................................14 Section 6. Spurious Emissions (conducted).........................................................15 Section 7. Spurious Emissions (radiated).............................................................22 Section 8. Peak Power Spectral Density...............................................................26 Section 9. Minimum Processing Gain ..................................................................30 Section 10. Test Equipment List...........................................................................31 ANNEX A - TEST DETAILS...............................................................................32 ANNEX B - TEST DIAGRAMS...........................................................................42 Page 2 of 44 Nemko Dallas FCC PART 15, SUBPART C DIRECT SEQUENCE SPREAD SPECTRUM TRANSMITTER EQUIPMENT: BattGuard
Telesensor transmitter 0920 PROJECT NO.: 2L0103RUS3 Section 1. Summary of Test Results Manufacturer: Graviton Tradename: BattGuard
Telesensor Model No.: 0920 Serial No.: None General: All measurements are traceable to national standards. These tests were conducted on a sample of the equipment for the purpose of demonstrating compliance with Part 15, Subpart C, Paragraph 15.247 for Direct Sequence Spread Spectrum devices. Radiated tests were conducted is accordance with ANSI C63.4-1992. Radiated emissions are made on an open area test site. A description of the test facility is on file with the FCC. New Submission Production Unit Class II Permissive Change Pre-Production Unit THIS TEST REPORT RELATES ONLY TO THE ITEM(S) TESTED. THE FOLLOWING DEVIATIONS FROM, ADDITIONS TO, OR EXCLUSIONS FROM THE TEST SPECIFICATIONS HAVE BEEN MADE. See “ Summary of Test Data”. NVLAP LAB CODE: 100426-0 Nemko Dallas Inc. authorizes the above named company to reproduce this report provided it is reproduced in its entirety and for use by the company’s employees only. Any use which a third party makes of this report, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. Nemko Dallas Inc. accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. This report applies only to the items tested. Page 3 of 44 Nemko Dallas FCC PART 15, SUBPART C DIRECT SEQUENCE SPREAD SPECTRUM TRANSMITTER EQUIPMENT: BattGuard
Telesensor transmitter 0920 PROJECT NO.: 2L0103RUS3 Summary Of Test Data NAME OF TEST PARA. NO. SPEC. RESULT Powerline Conducted Emissions 15.207(a) 48 dB
V N/A Minimum 6 dB Bandwidth 15.247(a)(2) >500 kHz Complies Maximum Peak Power Output 15.247(b)(1)<1 Watt Complies Spurious Emissions (Antenna Conducted) 15.247(c) -20 dBc/100kHz Complies Spurious Emissions (Restricted Bands) 15.247(c) < 74 dBuV/m Peak < 54 dBuV/m Avg Complies Peak Power Spectral Density 15.247(d) +8 dBm/3kHz Complies Processing Gain 15.247(e) >10 dB Complies Footnotes: The device is battery powered. Processing gain is addressed in a separate report. Page 4 of 44 Nemko Dallas FCC PART 15, SUBPART C DIRECT SEQUENCE SPREAD SPECTRUM TRANSMITTER EQUIPMENT: BattGuard
Telesensor transmitter 0920 PROJECT NO.: 2L0103RUS3 Section 2. Equipment Under Test (E.U.T.) General Equipment Information Frequency Band: 902 – 928 MHz 2400 – 2483.5 MHz 5725 – 5850 MHz Operating Frequency of Sample 2401.4 to 2479.4 MHz Channel Spacing: 1.5 MHz Emissions Designator: 2M00F9W User Frequency Adjustment: Software controlled Page 5 of 44 Nemko Dallas FCC PART 15, SUBPART C DIRECT SEQUENCE SPREAD SPECTRUM TRANSMITTER EQUIPMENT: BattGuard
Telesensor transmitter 0920 PROJECT NO.: 2L0103RUS3 Description of Modification for Modification Filing Family List Rational Page 6 of 44 Nemko Dallas FCC PART 15, SUBPART C DIRECT SEQUENCE SPREAD SPECTRUM TRANSMITTER EQUIPMENT: BattGuard
Telesensor transmitter 0920 PROJECT NO.: 2L0103RUS3 System Description Telesensors are connected to each cell of the battery backup system. Using a wireless radio transmitter, each telesensor precisely measures battery current voltage, calculated impedance and temperature and reports the results at 15 minute intervals to a Graviton DCU data collection device mounted near your battery backup system. The operator can read the results locally or opt to transmit the results to Graviton’s Network Operation Center where results are collected, analyzed, stored and presented on a secure website so authorized personnel can view from a browser enabled computer. The transmitter is powered by the battery backup system. System Diagram Page 7 of 44 Nemko Dallas FCC PART 15, SUBPART C DIRECT SEQUENCE SPREAD SPECTRUM TRANSMITTER EQUIPMENT: BattGuard
Telesensor transmitter 0920 PROJECT NO.: 2L0103RUS3 Section 3. Minimum 6 dB Bandwidth NAME OF TEST: Minimum 6 dB Bandwidth PARA. NO.: 15.247(a)(2) TESTED BY: David Light DATE: 3/12/2002 Test Results: Complies. Measure…

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Radiated Photographs (Worst Case Configuration)