Zoom Telephonics WLANPCCARD1 User Manual Updated RF evaluation and updated installation manual

Zoom Telephonics Inc Updated RF evaluation and updated installation manual

Contents

Updated RF evaluation and updated installation manual

FCC Application for a class II permissive change for Zoom Telephonics
FCC ID: BDNWLANPCCARD1 •
••
• Report No. E990762-1 21-May-01
______________________________________________________________________
_____________________________________________________________
Curtis-Straus
LLC •
••
• 527 Great Road •
••
• Littleton, MA •
••
• TEL (978) 486-8880 •
••
• FAX (978) 486-8828 page 1 of 6
3.4 Radiofrequency Radiation Exposure Evaluation
During the power output measurement, a maximum power output of 18.7dBm was obtained on
channel 6 at the antenna port. Adding the worst case manufacturer supplied antenna gain
(13dBi for the Patch Array antenna) to the maximum power output gives an EIRP of 31.7dBm.
A calculation based on the FCC’s Evaluating Compliance with FCC Guidelines for Human
Exposure to Radiofrequency Electromagnetic Fields (Edition 97-01) gives a minimum
distance for human exposure of 11cm for the patch array antenna, 3.9cm for the patch antenna
and 3.2cm for the dipole antenna. Equation (4) on page 19 of that document was used to
calculate these distances using the 1mW/cm2 limit found in the General Population Exposure
Limits table on page 67.
Since the product is classified as a mobile device, the installation manual contains instructions
for installing the antennas with a minimum separation distance of 20cm between the antennas
and the user or other nearby persons. This 20cm distance is well beyond the 11cm required by
the RF exposure limits of section 2.1091.
FCC Application for a class II permissive change for Zoom Telephonics
FCC ID: BDNWLANPCCARD1 •
••
• Report No. E990762-1 21-May-01
______________________________________________________________________
_____________________________________________________________
Curtis-Straus
LLC •
••
• 527 Great Road •
••
• Littleton, MA •
••
• TEL (978) 486-8880 •
••
• FAX (978) 486-8828 page 2 of 6
6.2 User’s Manual
Below is a copy of the antenna installation instructions. Please note the circled paragraph on
page 3 of the manual that states the 20cm minimum separation requirement.
FCC Application for a class II permissive change for Zoom Telephonics
FCC ID: BDNWLANPCCARD1 •
••
• Report No. E990762-1 21-May-01
______________________________________________________________________
_____________________________________________________________
Curtis-Straus
LLC •
••
• 527 Great Road •
••
• Littleton, MA •
••
• TEL (978) 486-8880 •
••
• FAX (978) 486-8828 page 3 of 6
FCC Application for a class II permissive change for Zoom Telephonics
FCC ID: BDNWLANPCCARD1 •
••
• Report No. E990762-1 21-May-01
______________________________________________________________________
_____________________________________________________________
Curtis-Straus
LLC •
••
• 527 Great Road •
••
• Littleton, MA •
••
• TEL (978) 486-8880 •
••
• FAX (978) 486-8828 page 4 of 6
FCC Application for a class II permissive change for Zoom Telephonics
FCC ID: BDNWLANPCCARD1 •
••
• Report No. E990762-1 21-May-01
______________________________________________________________________
_____________________________________________________________
Curtis-Straus
LLC •
••
• 527 Great Road •
••
• Littleton, MA •
••
• TEL (978) 486-8880 •
••
• FAX (978) 486-8828 page 5 of 6
FCC Application for a class II permissive change for Zoom Telephonics
FCC ID: BDNWLANPCCARD1 •
••
• Report No. E990762-1 21-May-01
______________________________________________________________________
_____________________________________________________________
Curtis-Straus
LLC •
••
• 527 Great Road •
••
• Littleton, MA •
••
• TEL (978) 486-8880 •
••
• FAX (978) 486-8828 page 6 of 6

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