RF Exposure

FCC ID: SK9PMCR1

RF Exposure Info

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FCCID_1057722

Certification Exhibit FCC ID: SK9PMCR1 IC: 864G-PMCR1 FCC Rule Part: 15.247, 15.249 IC Radio Standards Specification: RSS-210 ACS Report Number(s): 08-0454 Manufacturer: Itron Electricity Metering Inc. Model(s): Cell Relay Pole, GSM RF Exposure 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598

Model(s): Cell Relay Pole, GSM FCC ID: SK9PMCR1 IC: 864G-PMCR1 General Information: Applicant: Itron Electricity Metering Inc. ACS Project: 08-0454 FCC ID: SK9PMCR1 Device Category: Mobile Environment: General Population/Uncontrolled Exposure Exposure Conditions: Greater than 20 centimeters Simultaneous Tx: Yes Technical Information: GPRS Modem 2.4GHz Zigbee 2.4GHz Zigbee Module Radio 900 MHz LAN (Register PCB) (Cell Relay PCB)1 FCC ID: N7NMC8790 IC:2417C-MC8790 Mobile low profile Antenna Type phantom omnidirectional omnidirectional vertical GSM850: 3dBi Antenna Gain 3dBi 0dBi 0dBi GSM1900: 3dBi Conducted GSM850: 31.8dBm 18.99dBm 17.21dBm 0.19dBm Power GSM1900: 28.7dBm GSM850: 3.019W Maximum EIRP 0.158W 0.053W 0.0015mW GSM1900: 1.479W GSM850: 1.840W Maximum ERP 0.096W 0.032W 0.0006mW GSM1900: 0.901W Note 1: The Cell Relay 2.4GHz low power Zigbee contribution to the overall MPE calculation is negligible and therefore will not be included in the power density calculations below. MPE Calculation: Power Density The Power Density (mW/cm2) is calculated as follows: PG S= 4πR 2 Where: S = power density (in appropriate units, e.g. mW/cm2) P = power input to the antenna (in appropriate units, e.g., mW) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) Source Based Time Averaging of GPRS/EDGE Modem The GPRS Modem is a Class 12 modem with a 50% source-based time averaged duty cycle. The measured level was reduced by a factor 3dB to account for the duty cycle of the Modem. The duty cycle correction factor is determined using the formula: 10log (0.50) = 3dB. Corrected Level 850 = 31.8 – 3.0 = 28.8dBm Corrected Level 1900 = 28.7 – 3.0 = 25.7dBm 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598

Model(s): Cell Relay Pole, GSM FCC ID: SK9PMCR1 IC: 864G-PMCR1 MPE Calculator for Mobile Equipment Limits for General Population/Uncontrolled Exposure* Transmit Radio Power Radio Antenna Antenna Distance Power Density Frequency Power Density Limit Power Gain Gain (mW (cm) (mW/cm^2) (MHz) (dBm) (mW/Cm2) (mW) (dBi) eq.) 902.25 18.99 0.60 79.25 3 1.995 20 0.031 2405 17.21 1.00 52.60 0 1.000 20 0.010 824 28.8 0.55 758.58 3 1.995 20 0.301 1850 25.7 1.00 371.54 3 1.995 20 0.147 Summation of Power Densities – Simultaneous Transmissions This device contains multiple transmitters which can operate simultaneously and therefore the maximum RF exposure is determined by the summation of power densities. The maximum power density as calculated by a summation of power densities for each simultaneous transmission combination as follows: GPRS Modem Operating in the 800MHz Cellular Band: 900MHz LAN: 0.031 (mW/cm^2) 2.4GHz Zigbee: 0.010 (mW/cm^2) GSM 850 (GPRS): 0.301 (mW/cm^2) TOTAL: 0.342 (mW/cm^2) GPRS Modem Operating in the 1900MHz PCS Band: 900MHz LAN: 0.031 (mW/cm^2) 2.4GHz Zigbee: 0.010 (mW/cm^2) GSM 1900 (GPRS): 0.147 (mW/cm^2) TOTAL: 0.188 (mW/cm^2) Installation Guidelines: The installation manual shall contain text similar to the following advising how to install the equipment to maintain compliance with the FCC RF exposure requirements: “RF Exposure (Intentional Radiators Only) In accordance with FCC requirements of human exposure to radiofrequency fields, the radiating element shall be installed such that a minimum separation distance of 20cm is maintained from the general population.” Conclusion: This device complies with the MPE requirements by providing adequate separation between the device, any radiating structure and the general population. 5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598


Document Created: 2009-01-12 12:41:09
Document Modified: 2009-01-12 12:41:09
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