User`s manual

Reference: No: T1109084031-RH
Reference No: 90522403-RT
Report No: T11112830801-RH
Page 11 / 11 Rev. 01
EUT parameter (data from the separate report)
IEEE 802.11a : 19.10 dBm 0.0813 W
IEEE 802.11n HT20 : 18.13 dBm 0.065 W
Max average output power in Watt
(TP)
IEEE 802.11n HT40 : 17.65 dBm 0.0582 W
Antenna gain (5G)
IEEE 802.11a/n HT20/n HT40: 4 dBi
(Numeric gain: 2.51)
Safety distance
(m)
0.2 m (20cm)
Exposure evaluation
Given
D
TPG
E
××
=
30
E
TPG
D
××
=
30
IEEE 802.11a:
Yield
√ G TP(W) D(m) E(V/m)
30 2.51 0.0146 0.2 5.24077
IEEE 802.11n HT20:
Yield
√ G TP(W) D(m) E(V/m)
30 2.51 0.0169 0.2 5.64041
IEEE 802.11n HT40:
Yield
√ G TP(W) D(m) E(V/m)
30 2.51 0.0127 0.2 4.88570
Where
G: numerical gain of
transmitting antenna;
TP: Transmitted power in
watt;
D: distance from the
transmitting antenna in
meter
Conclusion:
Æ E= 11.41 V/m is the maximum E-Field strength when safety distance between the
EUT and human body is maintained at least 20cm, which is below 61V/m as required in
Annex III table 2 of EC Council Recommendation (1999/519/EC). This proves that the
unit complies with the EN 62311 for RF exposure requirement.