[MLB-WIRELESS] Dlink FCC tests

[vak]

Hiya folks,

This is how I interpret the FCC tests:

Section 4.4.7

Chan 1 Freq 2412 dBm 11.36 Max dBm 30 PASS
Chan 6 Freq 2437 dBm 11.42 Max dBm 30 PASS
Chan 11 Freq 2462 dBm 12.48 Max dBm 30 PASS

One thing to note, the test report (4.4.3 does NOT explain how these
measurements were determined - ie what mode the DUT was put in.

When browsing weca.htm, there are different modes you can put the unit
into (to cater for FCC tests) - they do not necessarily represent actual
operational (real life) tests.


In early Jan, I'll be testing a DLink 900AP+ and an Enterasys card to
see their actual output with traffic going across them.

Preliminary tests a few weeks ago of the Enterasys card running
Netstumbler (non associative mode), I measured +7dBm.

It would be interesting to find out if they have AGC (Automatic Gain
control) which would scale back the output if the signal was strong -
perhaps the FCC tests turn the AGC off........ who knows!


The following section was VERY interesting.....  It may be intended for
hardwired antennas to the PCB - but am not sure.

4.7 ANTENNA REQUIREMENT
4.7.1 STANDARD APPLICABLE
For intentional device, according to FCC 47 CFR Section 15.203, an
intentional
radiator shall be designed to ensure that no antenna other than that
furnished by
the responsible party shall be used with the device. And according to
FCC 47 CFR
Section 15.247 (b), if transmitting antennas of directional gain greater
than 6dBi are
used, the power shall be reduced by the amount in dB that the
directional gain of
the antenna exceeds 6dBi.

Cheers,

Vaskos
--------
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 1338 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://lists.wireless.org.au/pipermail/melbwireless/attachments/20021224/2cd9368b/attachment.bin>