RF Exposure MPE

FCC ID: QVT-525-V21

RF Exposure Info

Download: PDF
FCCID_1222003

Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521-5376 Phone: 402.472.5880 Fax: 402.472.5881 RF Exposure REPORT 4.9GHz Band Company: 3e Technologies International 9715 Key West Ave. Suite 500 Rockville, MD 20850 Contact: Rich Brazda Product: DCMA-82 PCI Transmitter Module FCC ID: QVT-525-V21 Test Report No: RFE101309-02-01 Issued by: NCEE Labs 4740 Discovery Dr. Lincoln, NE 68521 DATE: 14 December 2009 Total Pages: 3 The Nebraska Center for Excellence in Electronics (NCEE) authorizes the above named company to reproduce this report provided it is reproduced in its entirety for use by the company’s employees only. Any use that a third party makes of this report, or any reliance on or decisions made based on it, are the responsibility of such third parties. NCEE 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.

NCEE Labs RFE101309-02-01 FCC ID: QVT-525-V21 RF Exposure Calculations: The minimum separation distance is calculated from FCC OET 65 Appendix B, Table 1B “Guidelines for General Population/Uncontrolled Exposure.” This calculation is based on the highest EIRP possible from the system, considering maximum power and antenna gain. RF Power Measurement The RF output of the transceiver was connected to a power sensor and power meter. Measurements were made with the transmitter continuously active. The highest power settings were chosen from the 2.4GHz and the 5.7GHz bands. Frequency Output Power Output Power (GHz) dBm mW 4.960 22.26 168.27 4.980 23.14 206.06 Power measurements taken from NCEE Labs report R101309-02-01 Test Equipment Used LAST DESCRIPTION AND MODEL NO. SERIAL NO. CALIBRATION MANUFACTURER DATE Hewlett Packard Power Meter 4378 100307 20 Jan 2009 Hewlett Packard Power Sensor 8481A 2702A63981 20 Jan 2009 Test Environment Testing was performed at the NCEE Labs Lincoln facility. Laboratory environmental conditions varied slightly throughout the test: Relative humidity of 40 ± 5% Temperature of 20 ± 2º Celsius Exposure Limit (mW/cm2) = F/1200 4.13 mW/cm2 4.15 mW/cm2 Frequency (MHz) 4960 4980 Maximum peak output power (mW) 168.27 206.06 Antenna Gain (Numeric) 6.31 6.31 TERRAWAVE TERRAWAVE Antenna type T49080O10007B T49080O10007B Pd = (Pout × G) / (4π × R2) __________________ R= √ (Pout × G) / (4 π × Pd) Page 2 of 3

NCEE Labs RFE101309-02-01 FCC ID: QVT-525-V21 Pd = Power density limit, mW/cm2 Pout = Peak power output, mW G =Numeric Antenna Gain R = Distance from antenna, cm Pout G Pd R Frequency Calculation mW Numeric mW/cm2 cm MHz 168.27 6.31 4.13 4.52 4960 Minimum distance to meet limit 168.27 6.31 0.21 20.00 4960 Power density at 20 cm 206.06 6.31 4.15 4.99 4980 Minimum distance to meet limit 206.06 6.31 0.26 20.00 4980 Power density at 20 cm Notes: 1. The minimum safe distance is based on a conservative “worst case” prediction, i.e. using the formula shown above and no duty factor. In practice the minimum distance will be much shorter. (Ref. 2) References: 1. FCC OET Bulletin 65, Edition 97-01 2. FCC Supplement C to OET Bulletin 65, edition 01-01 3. IEEE C95.1, 1999 Page 3 of 3


Document Created: 2009-12-14 14:27:23
Document Modified: 2009-12-14 14:27:23
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC