Test Report

FCC ID: OF8-TM8B

Test Report

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FCCID_290136

TEST REPORT Report Number: 0232047W.doc Project Number: 3032147 August 20, 2002 Evaluation of the Dual Lead Telemetry Transmitter Model Number: TM8B to FCC Part 95, Subpart H Class For Life Sensing Instrument Company Test Performed by: Test Authorized by: Intertek Testing Services Life Sensing Instrument Company 1950 Evergreen Blvd, Suite 100 329 West Lincoln Street Duluth, GA 30096 Tullahoma, TN 37388 Prepared by: Date: Shawn McGuinness Reviewed by: Date: David Schramm All services undertaken are subject to the following general policy: Reports are submitted for exclusive use of the client to whom they are addressed. Their significance is subject to the adequacy and representative character of the samples and to the comprehensiveness of the tests, examinations or surveys made. This report shall not be reproduced except in full, without written consent of Intertek Testing Services NA Inc. This report must not be used to claim product endorsement by A2LA, NIST nor any other agency of the U.S. Government. EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 1 of 19

Intertek Testing Services TABLE OF CONTENTS 1 JOB DESCRIPTION .......................................................................................................................... 3 1.1 CLIENT INFORMATION ................................................................................................................... 3 1.2 TEST PLAN REFERENCE: ................................................................................................................ 3 1.3 EQUIPMENT UNDER TEST (EUT) .................................................................................................. 3 1.3.1 Test Summary........................................................................................................................ 4 1.3.2 Brief Description................................................................................................................... 4 1.3.3 System Support Equipment.................................................................................................... 4 1.3.4 Cables associated with EUT ................................................................................................. 4 1.3.5 System Block Diagram .......................................................................................................... 5 1.3.6 Justification........................................................................................................................... 6 1.3.7 EUT exercising...................................................................................................................... 6 1.3.8 Mode(s) of operation............................................................................................................. 6 1.4 MODIFICATIONS REQUIRED FOR COMPLIANCE .............................................................................. 6 2 TEST ENVIRONMENT .................................................................................................................... 7 2.1 TEST FACILITY .............................................................................................................................. 7 2.2 TEST EQUIPMENT .......................................................................................................................... 7 2.3 EXAMPLE FIELD STRENGTH CALCULATION ................................................................................. 8 2.4 MEASUREMENT UNCERTAINTY..................................................................................................... 9 3 RADIATED EMISSIONS ................................................................................................................ 10 3.1 TEST DESCRIPTION ...................................................................................................................... 10 3.2 TEST PROCEDURE ........................................................................................................................ 10 3.3 TEST RESULTS ............................................................................................................................. 11 3.4 TEST CONFIGURATION PHOTOGRAPH ......................................................................................... 12 4 OCCUPIED BANDWIDTH............................................................................................................. 14 4.1 TEST DESCRIPTION ...................................................................................................................... 14 4.2 TEST PROCEDURE ........................................................................................................................ 14 4.3 TEST RESULTS ............................................................................................................................. 14 5 SPURIOUS EMISSIONS AT ANTENNA TERMINAL ............................................................... 15 5.1 TEST PROCEDURE ........................................................................................................................ 15 6 FREQUENCY STABILITY............................................................................................................. 16 6.1 TEST DESCRIPTION ...................................................................................................................... 16 6.2 TEST PROCEDURE ........................................................................................................................ 16 6.2.1 Frequency stability vs. temperature.................................................................................... 16 6.2.2 Frequency stability vs. voltage............................................................................................ 16 6.3 TEST RESULTS ............................................................................................................................. 16 7 RF EXPOSURE ................................................................................................................................ 18 8 AC MAINS LINE-CONDUCTED DISTURBANCE..................................................................... 19 EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 2 of 19

Intertek Testing Services 1 JOB DESCRIPTION 1.1 Client information The Dual Lead Telemetry Transmitter has been tested at the request of Company: Life Sensing Instrument Company 329 West Lincoln Street Tullahoma, TN 37388 Name of contact: Gene Money Telephone: (800) 624-2732 Fax: (931) 455-9093 1.2 Test plan reference: Tests were performed to the following standards: • FCC Part 95, Subpart H rules for an unintentional radiator 1.3 Equipment Under Test (EUT) Equipment Under Test Technical Specifications Description Dual Lead Telemetry Transmitter Model Number TM8B Serial Number tm8b4475611.00 Use of product: Medical telemetry Type of emission: F3D Maximum modulation frequency: 4.5 kHz Maximum allowed deviation: 512 Hz RF output power: 0.25 mW Means for variation of operating power: Fixed Frequency range: 608 to 614 MHz Maximum number of channels: 238 Channel separation: 25 kHz Antenna: Shield of patient leads External input: Patient’s physiological information EUT receive date: September 23, 2002 EUT receive condition: The EUT was received in good condition with no apparent damage. Test start date: October 2, 2002 Test completion date: October 2, 2002 EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 3 of 19

Intertek Testing Services 1.3.1 Test Summary FCC Rule Description of test Result Page 2.1046 RF power output Pass 10 2.1047 Modulation characteristics Not applicable -- 2.1049 Occupied Bandwidth Pass 14 2.1053 Spurious emissions at antenna terminal N/A1 -- 95.1115 (a) Field strength of fundamental Pass 10 95.1115 (b) Field strength of undesired emissions Pass 10 15.107 AC Line conducted emissions N/A2 -- Frequency stability 2.1055 vs. Temperature Pass 16 vs. Voltage 2.1093 RF Exposure N/A3 -- 1.3.2 Brief Description The test results in this report pertain only to the item tested. The following description of the Dual Lead Telemetry Transmitter was supplied by Life Sensing Instrument Company: The TM8B Dual Lead ECG Transmitter is a frequency synthesized transmitter operating in the UHF (606 – 614 MHz) range. The transmitter utilizes 5 independent patient lead wires with snap electrode adapters for disposable electrodes. 1.3.3 System Support Equipment Table 1-1 contains the details of the support equipment associated with the Equipment Under Test. Table 1-1: System Support Equipment Description Manufacturer Model Number Serial Number FCC ID number Patient Simulator Dynatech ECG110 0596 N/A 1.3.4 Cables associated with EUT Table 1-2 contains the details of the cables associated with the EUT. Table 1-2: Interconnecting cables between modules of EUT Cables Connection Description Length Shielding Ferrites From To Yes, Patient Leads (x5) 1m None EUT Patient Simulator braid 1 Not applicable because the EUT has only an integrated antenna. 2 Not applicable because the EUT is only powered from 3Vdc batteries. 3 Not applicable because the EUT is body worn and operates at 0.25 mW. EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 4 of 19

Intertek Testing Services 1.3.5 System Block Diagram The diagram shown below details the interconnection of the EUT and support equipment. For specific layout, refer to the test configuration photograph in the relevant section of this report. Patient Simulator EUT EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 5 of 19

Intertek Testing Services 1.3.6 Justification The system was configured for testing in a typical fashion (as a customer would normally use it). During testing, all cables were manipulated to produce worst case results. To insure maximum emissions were detected, the system was rotated 360 degrees, the antenna height was varied from 1 to 4 meters above the ground plane in both horizontal and vertical polarizations. These maximum emissions are represented in Section 3.0. 1.3.7 EUT exercising The EUT exercise program used during radiated testing was designed to exercise the various system components in a manner similar to a typical use. There was no special software to exercise the device. Once energized it operated normally. 1.3.8 Mode(s) of operation The EUT was powered from a +3VDC battery. The EUT exercise program used during radiated and conducted testing was designed to exercise the various system components in a manner similar to a typical use. 1.4 Modifications required for compliance No modifications were implemented by Intertek Testing Services. EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 6 of 19

Intertek Testing Services 2 TEST ENVIRONMENT 2.1 Test Facility The Duluth 10-meter chamber site is located at 1950 Evergreen Blvd., Suite 100, Duluth, Georgia. The test site is a 10-meter semi-anechoic chamber. The site meets the characteristics of CISPR 16-1: 1993 and ANSI C63.4: 1992. For measurements, a remotely controlled flush-mount metal-top turntable is used to rotate the EUT a full 360 degrees. A remote controlled non-conductive antenna mast is used to scan the antenna height from one to four meters. The A2LA accreditation code for this site is 121624 under certificate number 1455.01. 2.2 Test Equipment Table 2-1 contains a list of the test equipment used during the testing. Table 2-1 List of Test Equipment Description Make Model Serial # Cal Date EMI Receiver HP 8546A 3410A00173 3/28/02 RF Filter Selector HP 85460A 3448A00203 3/28/02 PreAmp HP 8447D 2648A04296 8/06/02 BiLog Antenna Chase CBL6112A 2245 4/09/02 Cable N/A CableTW2 ITS#211411 6/11/02 Cable N/A CableTW3 ITS#211412 6/11/02 Cable N/A Cable N2 ITS# 211999a2 6/11/02 * All calibrations are on 12-month cycles unless otherwise indicated EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 7 of 19

Intertek Testing Services 2.3 Example Field Strength Calculation The field strength is calculated by adding the Antenna Factor and Cable Factor, and subtracting the Amplifier Gain (if any) from the measured reading. The basic equation with a sample calculation is as follows: FS = RA + AF + CF – PA Where FS = Field Strength in dB(µV/m) RA = Receiver Amplitude (including preamplifier) in dB(µV) CF = Cable Attenuation Factor in dB AF = Antenna Factor in dB(1/m) PA= Preamplifier Factor in dB Assume a receiver reading of 52.0 dB(µV) is obtained. The antenna factor of 7.4 dB and cable factor of 1.6 dB is added. The amplifier gain of 29 dB is subtracted, giving a field strength of 32 dB(µV/m). RA = 52.0 dB(µV) AF = 7.4 dB(1/m) CF = 1.6 dB PA = 29.0 dB FS = RF + AF + CF – PA FS = 52.0 + 7.4 + 1.6 – 29.0 FS = 32 dB(µV/m) EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 8 of 19

Intertek Testing Services 2.4 Measurement Uncertainty Compliance of the product is based on the measured value. However, the measurement uncertainty is included for informational purposes. The expanded uncertainty (k = 2) for radiated emissions from 30 to 1000 MHz has been determined to be: ±3.5 dB at 10m, ±3.8 dB at 3m The expanded uncertainty (k = 2) for mains conducted emissions from 150 kHz to 30 MHz has been determined to be: ±2.6 dB EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 9 of 19

Intertek Testing Services 3 RADIATED EMISSIONS 3.1 Test Description Paragraphs 2.1046 and 95.1115 are covered under this section. Table 3-1 Radiated Disturbance Limit for FCC Part 95, Subpart H Frequency 3m limits, 3m limits, (MHz) uV/m dB(uV/m) 608-614 200,000 106 below 960 200 46 960 and up 500 54 3.2 Test Procedure Measurements were conducted according to Table 3-2 unless indicated otherwise in the measurement table. Table 3-2 Measurement bandwidth settings Resolution Video Measurement Detector bandwidth Bandwidth Fundamental 1 MHz 1 MHz Peak Unwanted emissions below 1 GHz 120 kHz 300 kHz Quasi-peak Unwanted emissions above 1 GHz 1 MHz 1 MHz Peak The measuring antenna correlates to a balanced dipole. Measurements of the radiated field were made with the antenna located at a distance of 3 meters from the EUT. The measuring antenna was adjusted between 1m and 4m in height above the ground plane for maximum meter reading at each test frequency. The antenna-to-EUT azimuth was varied during the measurement to find the maximum field-strength readings. The antenna-to-EUT polarization (horizontal and vertical) was varied during the measurements to find the maximum field-strength readings. The EUT was placed on a table whose top is 0.8m above the ground plane. The table was constructed of non-conductive materials. Its dimensions were 1m by 1.5m. Equipment setup for radiated disturbance tests followed the guidelines of ANSI C63.4: 1992. EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 10 of 19

Intertek Testing Services 3.3 Test Results The Dual Lead Telemetry Transmitter met the Fundamental, Spurious and Digital Device radiated disturbance requirements of FCC Part 95, Subpart H. The test results are located in Table 3-3 – 3.3-2. The radiated power was calculated to be 0.25 mW using the following formula: Pt ∗ Gt = ( E ∗ d )2 30 Table 3-3 Fundamental Radiated Disturbance Company: Life Sensing instruments, Co. Tested by: Shawn K. McGuinness Model: TM 8B Location: Duluth Project No.: 3032147 Detector: HP8546 Date: 10/02/02 Antenna: CHAS2622 Standard: FCC95 PreAmp: HP-1G Class: Subpart H Group: None Cable(s): CABLEN2 Cable TW2 Notes: Fundamental Peak Reading Distance: 3 Ant. Antenna Cable Pre-amp Distance Pol. Frequency Reading Factor Loss Factor Factor Net Limit Margin (V/H) MHz dB(uV) dB(1/m) dB dB dB dB(uV/m) dB(uV/m) dB H 610.930 92.2 18.6 5.1 26.6 0.0 89.2 106.0 -16.8 Table 3.3-2 Spurious Radiated Disturbance Company: Life Sensing instruments, Co. Tested by: Shawn K. McGuinness Model: TM 8B Location: Duluth Project No.: 3032147 Detector: HP8546 Date: 10/02/02 Antenna: CHAS2622 Standard: FCC95 PreAmp: HP-1G Class: Subpart H Group: None Cable(s): CABLEN2 Cable TW2 Notes: Unwanted emissions Distance: 3 Ant. Antenna Cable Pre-amp Distance Pol. Frequency Reading Factor Loss Factor Factor Net Limit Margin (V/H) MHz dB(uV) dB(1/m) dB dB dB dB(uV/m) dB(uV/m) dB V 56.150 36.6 6.8 1.6 26.1 0.0 18.9 46.0 -27.1 V 109.450 35.4 11.7 2.1 26.0 0.0 23.2 46.0 -22.8 V 133.000 34.7 11.5 2.3 25.8 0.0 22.7 46.0 -23.3 H 288.600 31.2 13.0 3.6 25.2 0.0 22.5 46.0 -23.5 H 292.000 31.6 13.0 3.6 25.3 0.0 22.9 46.0 -23.1 Antenna: AH571 PreAmp: hp8449b Ant. Antenna Cable Pre-amp Distance Pol. Frequency Reading Factor Loss Factor Factor Net Limit Margin (V/H) MHz dB(uV) dB(1/m) dB dB dB dB(uV/m) dB(uV/m) dB H 1222.110 41.5 25.2 6.6 38.1 0.0 35.1 54.0 -18.9 H 1833.110 38.2 28.8 8.3 37.2 0.0 38.0 54.0 -16.0 H 2444.110 36.8 30.4 9.7 37.0 0.0 39.9 54.0 -14.1 EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 11 of 19

Intertek Testing Services 3.4 Test Configuration Photograph Figure 3-1 and Figure 3-2 show the testing configurations used for Fundamental, Spurious and Digital Device radiated disturbances. Figure 3-1: Configuration photograph, radiated disturbance, front view EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 12 of 19


Intertek Testing Services 4 OCCUPIED BANDWIDTH 4.1 Test description Requirement: FCC 2.1049 Emission Bandwidth: <10.0 kHz 4.2 Test Procedure The bandwidth measurement was performed using the radiated emissions setup because the EUT does not have an antenna port. With the EUT in a position where the maximum emission was detected, the bandwidth was measured. The resolution bandwidth of the spectrum analyzer was setup at least 10 times higher than the necessary bandwidth of the transmitter. The peak level of the spectrum analyzer reading obtained was used as a reference level during the occupied bandwidth measurement. The resolution bandwidth was setup to 300 Hz and the spectrum of the transmitting signal was recorded. 4.3 Test Results The Necessary Bandwidth was calculated using the formula B = 2 × (M+D), where M is the highest modulation frequency, D is the deviation. As per TM8B specification, M=0.512kHz and D=4.5kHz. Therefore, B=10.0 kHz. The following figure shows the bandwidth to be 6.63 kHz. -7.4 REF LEVEL -7.4 -17.4 ATTEN 10 dB -27.4 10 dB/Div -37.4 SWP 5.00 S -47.4 DL -32.4 DBM -57.4 MKR DELTA -67.4 6.63 KHz -0.09 dB -77.4 -87.4 START 610.975 MHz CENTER 611 MHz STOP 611.025 MHz RBW 300 Hz VBW 300 Hz SPAN 50 KHz Figure 4-1 Occupied Bandwidth EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 14 of 19

Intertek Testing Services 5 SPURIOUS EMISSIONS AT ANTENNA TERMINAL Test description Parameter: FCC 2.1051 Requirement: 20 dB below carrier 5.1 Test Procedure This test was not applicable because the EUT does not have accessible antenna terminals. EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 15 of 19

Intertek Testing Services 6 FREQUENCY STABILITY 6.1 Test Description Requirement: FCC 2.1055 Frequency Tolerance 2 ppm 6.2 Test Procedure The ppm frequency error of the transmitter was calculated by:  MCF  ppm =  − 1 ∗ 10 6  ACF  Where MCF is the measured carrier frequency in MHz ACF is the assigned carrier frequency in MHz 6.2.1 Frequency stability vs. temperature The equipment under test was connected to an external DC power supply and the RF output was connected to a spectrum analyzer through appropriate attenuation. The EUT was placed inside the temperature chamber. After the temperature stabilized for approximately 30 minutes, the frequency of the output signal was measured. 6.2.2 Frequency stability vs. voltage At room temperature (25 ±5 °C), an external variable DC power supply was connected to the EUT. The frequency of the transmitter was measured for 115%, 100% and 85% of the nominal operating input voltage. 6.3 Test results Table 6-1: Frequency stability vs. temperature Temperature Frequency Difference (°C) (MHz) (Hz) 50 611.001390 -10 40 611.001380 -20 30 611.001405 5 20 611.001415 15 10 611.001395 -5 0 611.001405 5 -10 611.001425 25 -20 611.001380 -20 -30 611.001370 -30 EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 16 of 19

Intertek Testing Services Table 6-2: Frequency stability vs. voltage Supply (Battery) Frequency Difference Volts (MHz) (Hz) 2.4 611.001375 -25 2.6 611.001410 10 2.8 611.001405 5 3.0 611.001400 0 3.2 611.001370 -30 3.4 611.001395 -5 3.6 611.001400 0 EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 17 of 19

Intertek Testing Services 7 RF EXPOSURE This test is not applicable because the EUT is a body worn transmitter and operates at 0.25 mW. EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 18 of 19

Intertek Testing Services 8 AC MAINS LINE-CONDUCTED DISTURBANCE This test not required as the EUT was powered only by batteries. EMC Report for Life Sensing Instrument Company on the TM8B FCCID: OF8-TM8B Page 19 of 19


Document Created: 2002-12-12 05:36:00
Document Modified: 2002-12-12 05:36:00
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