RF Exposure

FCC ID: EHA700C-SMC45

RF Exposure Info

Download: PDF
FCCID_388865

Systems and Solutions Date: December 8, 2003 550 Second St SE Cedar Rapids, IA 52401 Dave Fry MS GR05 Ref. FCC ID: EMC Engineer EHA700C-SMB45 tel 319 846-2415 HN22011B fax 319 846-2475 HN2ABTM3-2 Dave.Fry@Intermec.com EHARFID915PCC-6 www.intermec.com To Whom It May Concern: Intermec Technologies Corporation hereby declares that our Model 700C Pen Computer for Data Collection with internal FCC Part 15 - 2.4 GHz DSSS transceiver, internal FCC Part 24E - 1800 MHz transceiver, and Intermec IP3 add on RFID scanner FCC Part 15 - 902 MHz FHSS transceiver is described as the equipment under test (EUT). This EUT is categorically excluded from routine environmental evaluation for RF exposure by its classification as a Part 15/24E handheld mobile radio operating with approximately 2070.4 mW ERP. Their summed ERP is less than 3 watts, therefore the EUT is categorically excluded from routine environmental evaluation per 47 CFR 2.1091(c). Note: The radio FCC ID: HN2ABTM3-2 cannot operate simultaneously with the IP3. The operation detail is contained within this application. Since the product would be configured for sale with the above listed radios, this clarification is required for co-located transmitter identification. The attached tables showing MPE evaluation of the product with antenna options. Each radio band has specific a maximum permissible exposure (MPE) as stated in 47 CFR 1.1310. Refer to the limits shown in the calculation tables for details. The general calculation for exposure at a distance of 20-cm (8-inch) distance is shown in the equation below. S = (PG)/4 π R 2 2 Where: S = power density (mW/cm ) P = power input to the antenna (mW) G = linear power gain relative to an isotropic radiator R = distance to the center of the radiation of the antenna (20 cm = limit for MPE estimates) Solving for S, the maximum power densities 20 cm from the transmitting antennas are contained within the following pages. Sincerely, Dave Fry EMC Engineer

IP3 Mobile 700C/GPRS co-locate TX RF Exposure Technologies Corporation Dave Fry EMC Test Laboratory EMC Engineer Cedar Rapids, IA Date: Nov. 24, 2003 EIRP Calculation of RF Exposure FCC ID: EHA700C-SMC45 Antenna options of the 700C below show the external dual band dipole at +4 dBi antenna is worst case. GPRS/GSM Radio Modem Calculation for exposure at 20cm distance Peak Pwr Density Pwr Density Conducted @ 20cm Limit Power Antenna Antenna Part Transmit Freq. Power Gain Density Antenna Description Type No. (MHz) (mW) (dBi) mW/cm 2 mW/cm 2 Ratio 1/4 wave External monopole 805-606-003 1800 933.0 3 0.3703 1.0 0.3703 1/4 wave External monopole 805-606-204 1800 933.0 4 0.4662 1.0 0.4662 FCC ID: HN22011B Antenna options of the 700C below show the internal antenna is worst case when co-located. 802.11b Radio Calculation for exposure at 20cm distance Peak Pwr Density Pwr Density Conducted @ 20cm Limit Power Antenna Antenna Part Transmit Freq. Power Gain 2 2 Density Antenna Description Type No. (MHz) (mW) (dBi) mW/cm mW/cm Ratio Internal folded dipole 805-608 2400 89.0 -2 0.0112 1.0 0.0112 FCC ID: EHARFID915PCC-6 Antenna for IP3 RFID scan handle option for 700C RFID Radio Calculation for exposure at 20cm distance Peak Pwr Density Pwr Density Conducted @ 20cm Limit Power Antenna Antenna Part Transmit Freq. Power Gain 2 2 Density Antenna Description Type No. (MHz) (mW) (dBi) mW/cm mW/cm Ratio Internal panel 805-616-001 902 1000.0 0 0.1989 0.61 0.3261

IP3 Mobile 700C/GPRS co-locate TX RF Exposure Technologies Corporation Dave Fry EMC Test Laboratory EMC Engineer Cedar Rapids, IA Date: Nov. 24, 2003 Co-Located Transmitter Calculation of RF Exposure Per FCC TCB Training April 3, 2002 “Devices operating in multiple frequency bands When RF exposure evaluation is required for TCB approval Separate antennas – estimated minimum separation distances may be considered for the frequency bands that do not require evaluation or TCB approval, however, the estimated distance should take into account the effect of co-located transmitters. (Note 24) Note 24 According to multiple frequency exposure criteria, the ratio of field strength or power density to the applicable exposure limit at the exposure location should be determined for each transmitter and the sum of these ratios must not exceed 1.0 for the location to be compliant.” Worst Case Exposure for 700C when using internal co-located transmitters with IP3 RFID scan handle option. Calculation for exposure at 20cm distance Peak Pwr Density Pwr Density Conducted @ 20cm Limit Power Transmitter FCC ID: Antenna Antenna Part Transmit Freq. Power Gain 2 2 Density Antenna Description Type No. (MHz) (mW) (dBi) mW/cm mW/cm Ratio FCC ID: EHA700C-SMC45 1/4 wave External monopole 805-606-204 1800 933.0 4 0.4662 1.0 0.4662 FCC ID: HN22011B folded Internal monopole 805-608 2400 89.0 -2 0.0112 1.0 0.0112 FCC ID: EHARFID915PCC-6 Internal panel 805-616-001 902 1000.0 0 0.1989 0.61 0.3261 ratio limit Total 1.0 0.8036 The worst case configuration for all combinations of co-located transmitters and antennas are shown. In all cases the ratio of exposure compared the limit when totaled does not exceed 1.0. ERP Calculation of RF Exposure ERP is sometimes prefered. The calculation as the Sum of the ERP of the co-located transmitters is in the table below. ERP TX1 + ERP TX2 + ERP TX3 Worst Case Exposure for 700C when using internal co-located transmitters with IP3 RFID scan handle option. Calculation for exposure at 20cm distance Pwr Density Pwr Density ERP @ 20cm Limit Power Transmitter FCC ID: Antenna Antenna Part Transmit Freq. Power 2 2 Density Antenna Description Type No. (MHz) (mW) mW/cm mW/cm Ratio FCC ID: EHA700C-SMC45 1/4 wave External monopole 805-606-204 1800 1427.2 0 0.2839 1.0 0.2839 FCC ID: HN22011B folded Internal monopole 805-608 2400 34.2 0 0.0068 1.0 0.0068 FCC ID: EHARFID915PCC-6 Internal panel 805-616-001 902 609.0 0 0.1212 0.61 0.1986 Total 2070.4 0.4119 ratio limit Total 1.0 0.4894 The worst case configuration for ERP combinations of co-located transmitters and antennas is shown. The ratio of exposure compared the limit when totaled does not exceed 1.0. Please note that EIRP = ERP x 1.64, so EIRP data presented is worst case.


Document Created: 2004-01-11 16:32:54
Document Modified: 2004-01-11 16:32:54
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC