test report

FCC ID: MSQWL520G

Test Report

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FCCID_639227

Test Report ---------------------------------------------------------------------------------- 1/20

CLASS II PERMISSIVE CHANGE
MEASUREMENT REPORT
of
Wireless Ethernet Router

Applicant : ASUSTek Computer Inc.

EUT : Wireless Router

Model No. : WL-520G

FCC ID : MSQWL520G

Tested by :

Training Research Co., Ltd.

TEL : 886-2-26935155 FAX : 886-2-26934440
No. 255, Nanyang Street, Shijr, Taipei Hsien 221, Taiwan, R.O.C.

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 3/20

Federal Communications Commission
Declaration of Conformity

for the following equipment:
Product name : 125 High Speed Wireless Router
Model name : WL-520G
Trade name : ASUS

Is herewith confirmed and found to comply with the requirements of CFR 47 part15 Subpart
B - Unintentional Radiators regulation. The results of electromagnetic mission evaluation are
shown in the report number : A5415060015
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received,
including interference that may cause undesired operation

Manufacturer USA local representative

Company name:
ASUSTeK Computer Inc. To be determined
Computer address:
4/F, 150, Li-Te Rd., Peitou, Taipei, Taiwan
ZIP / Postal code
112
Contact person:
Lawrence Yu
Title:
Manager
Internet e-mail address:
lawrence_yu@asus.com.tw
Tel / Fax:
886-2-28943447 / 886-2-28950113

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 4/20

Tables of Contents

I. GENERAL ................................................................................................................... 5
1.1 Introduction ......................................................................................................... 5
1.2 Description of EUT ............................................................................................. 5
1.3 Test method ......................................................................................................... 6
1.4 Description of Support Equipment ...................................................................... 7
1.5 Configuration of System Under Test .................................................................. 10
1.6 Verify the Frequency and Channel ..................................................................... 12
1.7 Test Procedure .................................................................................................... 13
1.8 Location of the Test Site .................................................................................... 13
1.9 General Test Condition ...................................................................................... 13

II. Section 15.101(a) : Equipment Authorization of Unintentional Radiators ............ 14

III. Section 15.207 : Power Line Conducted Emissions for AC Powered Units ......... 15
3.1 Test Condition & Setup ...................................................................................... 15
3.2 List of Test Instruments ...................................................................................... 16
3.3 Test Result of Conducted Emissions .................................................................. 17
Standby mode ................................................................................................................ 17

IEEE 802.11b CH 01 ..................................................................................................... 18

IEEE 802.11b CH 06 ..................................................................................................... 18

IEEE 802.11b CH 11 ..................................................................................................... 19

IEEE 802.11g CH 01 ..................................................................................................... 19

IEEE 802.11g CH 06 ..................................................................................................... 20

IEEE 802.11g CH 11 ..................................................................................................... 20

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 5/20

Ⅰ. GENERAL

1.1 Introduction
The following measurement report is submitted on behalf of applicant in support that the
certification in accordance with Part 2 Subpart J and Part 15 Subpart A, B and C of the Commission's
Rules and Regulations.

1.2 Description of EUT
FCC ID : MSQWL520G

Product Name : 125 High Speed Wireless Router

Model Name : WL-520G

Frequency Range : 2.412GHz ~ 2.462GHz

Support Channel : 11 Channels

Modulation Skill : DBPSK, DQPSK, CCK, OFDM

Power Type : Powered by the AC-DC adapter (1) or (2) or (3),
1) Model: DV-0980S-B20 [ DVE ]
I/P: 120VAC, 60Hz, 14W
O/P: 9VDC, 800mA
190cm length, non-shielded, no ferrite core

2) Model: 480910003CT [ LEI ]
I/P: 120VAC 60Hz 15.5W
O/P: 9.0VDC 1000mA
185cm length, non-shielded, no ferrite core

3) Model: AM-0900800D41 [ AMIGO ]
I/P: 120VAC 60Hz 15W
O/P: 9VDC 800mA
186cm length, non-shielded, no ferrite core
Data Cable : RJ45 cable x1, 60cm length, non-shielded, no ferrite core
RJ45 cable x3, 1m length, non-shielded, no ferrite core
RJ45 cable x1, 30m length, non-shielded, no ferrite core

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 6/20

1.3 Test method

1.3.1 The LAN1, LAN2 and LAN3 ports of EUT are termination by RJ45 cables.

1.3.2 The WAN port connected to far Hub.

1.3.3 Connected the LAN4 port of EUT with the LAN card of PC. Using PC and
software provided by the manufacturer to control EUT, the test is performed
under the specific conditions.

1.3.4 Set different data rate and channel (CH01/CH06/CH11) being tested
(a) Radiated for Intentional test:
making EUT to the mode of continuous transmission
(b) Conducted test and Radiated for unintentional test:
making EUT to the linking (Rx/Tx) mode with far support equipments

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 7/20

1.4 Description of Support Equipment
In order to construct the minimum testing, following equipment were used as the support units.
PC : IBM 8434
Model No. : IVG
Serial No. : 99CCZG9
FCC ID : N/A, DoC (Declaration of Confirmation) Approved
BSMI : R33026
Power type : 100 ~ 127VAC/6A, 200 ~ 240VAC/3A, 50 ~ 60Hz, Switching
Power cord : Non-shielded, 1.8m length, Plastic hood, No ferrite core

Monitor : HP 15’ Color Monitor
Model No. : D8894A
Serial No. : CN02364355
FCC ID : ARSCM356N
BSMI : 3882A031
Power type : 100 ~ 240 VAC / 1.5A, 50 ~ 60 Hz, Switching
Power cord : Non-shielded, 1.80m length, Plastic hood, No ferrite core
Data cable : Shielded, 1.50m length, Plastic hood, with ferrite core

LAN Card : D-Link
Model No. : DFE-530TX
Serial No. : 0050BAE32FF3
FCC ID : N/A, DoC Approved

Printer : EPSON
Model No. : B241A
Serial No. : FAPY155090
FCC ID : N/A, DoC Approved
BSMI : R33126
Power type : Switching adaptor
Power cord : Non-shielded, 198cm length, No ferrite core
Data cable : Shielded, 1.50m length, No ferrite core

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 8/20

PS/2 Mouse : HP
Model No. : M-S69
Serial No. : 334684-002 323614-001
FCC ID : DoC Approved
BSMI : R41126
Power type : By PC
Power cord : Shielded, 1.90m length, No ferrite core

PS/2 Keyboard : HP
Model No. : 5181
Serial No. : BE21700405
FCC ID : DoC Approved
BSMI : 3892C981
Power type : By PC
Data cable : Shielded, 1.73m length, no ferrite core

Modem : ACEEX
Model No. : DM-1414
Serial No. : 9010583
FCC ID : IFAXDM1414
Power type : Linear
Power cord : Non-shielded, 1.9m length, No ferrite cord
Data cable : RS232, Shielded, 1.2m length, No ferrite core
RJ11C x 2, 7’ length non-shielded, No ferrite core

USB Game pad : Logitech
Model No. : G-UC3B
Serial No. : AE3500500
FCC ID : DoC Approved
BSMI : 4902A047
Power type : Powered by PC
Power Cable : Shielded, 187cm length, Plastic hood, No ferrite core.

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 9/20

Notebook PC : Twinhead
Model No. : N222S
Serial No. : SY3261000988
FCC ID : DoC (Declaration of Confirmation) Approved
BSMI : 71001018
Power adaptor : LI Shin International Enterprise Corp.
Model No. : LSE9802A2060
Serial No. : A20231065818
BSMI : 3882B381
Power type : 100 ~ 240VAC / 50 ~ 60Hz, 1.5A, Switching
Power cord : Non-shielded, 1.0m length, Plastic hood, No ferrite core
(Main power to adaptor)
Shielded, 1.5m length, Plastic hood, ferrite core
(DC plug to adaptor)

WLAN Card : Gemtek Technology Co., Ltd.
Model No. : C911003
FCC ID : MXF-C911003

HUB : ASUS
Model No. : GX2048
FCC ID : None (CE approval)
Power type : Switching adaptor

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 10/20

1.5 Configuration of System Under Test

1.5.1 Conducted and Radiated for Unintentional

Power
Source

LAN
Card EUT

Modem Printer
Monitor PC

Test-table

PS/2 PS/2 USB
Keyboard Mouse Gamepad

Far-end

Notebook
To far LAN
port of HUB

Connections of Equipment
PC: *Parallel Port --- a printer
*VGA Port --- a monitor
*Serial Port --- an external modem
*USB Port --- a USB gamepad
*LAN Interface --- EUT
*PS/2-key Port --- a PS/2 keyboard
*PS/2-mouse Port --- a PS/2 mouse

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 11/20

1.5.2 Radiated of Intentional

Power
Source

LAN
Card EUT

Modem Printer
Monitor PC

Test-table
PS/2 PS/2 USB
Keyboard Mouse Gamepad

The tests below are carried with the EUT transmitter set at high power in TDD mode. The
EUT is forced to select of output power level and channel number by LAN port.
The setting up procedure was recorded in 1.3 test method.

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 12/20

1.6 Verify the Frequency and Channel

Channel Frequency (GHz)

1 2.412

2 2.417

3 2.422

4 2.427

5 2.432

6 2.437

7 2.442

8 2.447

9 2.452

10 2.457

11 2.462

Note:
1. This is for confirming that all frequencies are in 2.412GHz to 2.462GHz.
2. Section 15.31(m): Measurements on intentional radiators or receivers shall be performed at
three frequencies for operating frequency range over 10 MHz
(The locations of these frequencies one near the top, one near the middle and one near the
bottom.)
3. After test, the EUT operating frequencies are in 2.412GHz to 2.462GHz. So all the items as
followed in testing report are need to test these three frequencies:
Top: Channel – 1; Middle: Channel – 6; Bottom: Channel – 11.

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 13/20

1.7 Test Procedure
All measurements contained in this report were performed mainly according to the
techniques described in ANSI C63.4 (2003) and the pre-setup was written on 1.3 test method, the
detail setup was written on each test item.

1.8 Location of the Test Site
The radiated emissions measurements required by the rules were performed on the
three-meter, Anechoic Chamber (FCC Registration Number: 93906) maintained by Training
Research Co., Ltd. 1F, No. 255 Nanyang Street, Shijr, Taipei Hsien 221, Taiwan, R.O.C. Complete
description and measurement data have been placed on file with the commission. The conducted
power line emissions tests and other test items were performed in a anechoic chamber also located at
Training Research Co., Ltd.
No. 255 Nanyang Street, Shijr, Taipei Hsien 221, Taiwan, R.O.C. Training Research Co.,
Ltd. is listed by the FCC as a facility available to do measurement work for others on a contract
basis.

1.9 General Test Condition
The conditions under which the EUT operates were varied to determine their effect on the
equipment's emission characteristics. The final configuration of the test system and the mode of
operation used during these tests were chosen as that which produced the highest emission levels.
However, only those conditions, which the EUT was considered likely to encounter in normal use
were investigated.
In test, they were set in high power and continuously transmitting mode that controlled by
computer. The ch01, ch06 and ch11 of EUT were all tested. The setting up procedure is recorded on
1.3 test method.

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 14/20

II. Section 15.101(a): Equipment authorization of unintentional radiators

The EUT equipped with a LAN interface and should be operated with the computer. It was
categorized to Class B personal computers and peripherals as cannot be operated stand-alone. The
authorization requires Declaration of Conformity (DoC) and the items required such as Section 15.107
(Conducted limits) and Section 15.109 (Radiated emission limits) is same as Section 15.207 and
15.247(C).

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 15/20

III. Section 15.207: Power Line Conducted Emissions for AC Powered Units

3.1 Test Condition & Setup
The power line conducted emission measurements were performed in an anechoic chamber.
The EUT was assembled on a wooden table, which is 80 centimeters high, was placed 40 centimeters
from the backwall and at least 1 meter from the sidewall.
Power was fed to the EUT from the public utility power grid through a line filter and Line
Impedance Stabilization Networks (LISNs). The LISN housing, measuring instrumentation case,
ground plane, etc., were electrically bonded together at the same RF potential. The Spectrum
analyzer (or EMI receiver) was connected to the AC line through an isolation transformer. The
50-ohm output of the LISN was connected to the spectrum analyzer directly. Conducted emission
levels were in the CISPR quasi-peak and average detection mode. The analyzer's 6 dB bandwidth
was set to 9 KHz. No post-detector video filter was used.
The spectrum was scanned from 150 KHz to 30 MHz. The physical arrangement of the test
system and associated cabling was varied (within the scope of arrangements likely to be encountered
in actual use) to determine the effect on the unit's emanations in amplitude and frequency. All
spurious emission frequencies were observed. The highest emission amplitudes relative to the
appropriate limit were measured and have been recorded in paragraph 3.3
There is a test condition apply in this test item, the test procedure description as <1.3>. Three
channels were tested, one in the top (CH01), one in the middle (CH06) and the other in bottom
(CH11).

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 17/20

3.3 Test Result of Power Line Conducted Emissions
The following table shows a summary of the highest emissions of power line conducted
emissions on the LIVE and NETURAL conductors of the EUT power cord. Show as follows.

Test Conditions: Temperature : 25 °C Humidity : 73 % RH

Test mode: Standby mode
Power Connected Emissions Class B
Conductor Frequency Peak QP Average QP-limit AVG-limit Margin
(KHz) (dBµV) (dBµV) (dBµV) (dBµV) (dBµV) (dB)
153.590 56.93 49.13 9.26 66.00 56.00 -16.87
160.135 56.95 47.77 8.43 65.63 55.63 -17.86
3094.000 33.29 --- --- 56.00 46.00 -12.71
Line 1 7220.000 39.65 --- --- 60.00 50.00 -10.35
10307.685 49.16 47.14 31.74 60.00 50.00 -12.86
18240.000 39.49 --- --- 60.00 50.00 -10.51
153.500 56.88 48.88 8.96 66.00 56.00 -17.12
157.545 56.75 48.08 7.97 65.77 55.77 -17.69
180.000 48.47 --- --- 65.14 55.14 -6.67
Line 2 10430.000 45.12 --- --- 60.00 50.00 -4.88
15040.000 37.68 --- --- 60.00 50.00 -12.32
19720.000 38.97 --- --- 60.00 50.00 -11.03
NOTE:
(1)Margin = Peak Amplitude – Limit, The reading amplitudes are all under limit.
(2)A "+" sign in the margin column means the emission is OVER the Class B Limit
and "–" sign of means UNDER the Class B limit

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 18/20

Test mode: IEEE 802.11b Channel 1
Power Connected Emissions Class B
Conductor Frequency Peak QP Average QP-limit AVG-limit Margin
(KHz) (dBµV) (dBµV) (dBµV) (dBµV) (dBµV) (dB)
153.680 56.31 48.26 8.65 66.00 56.00 -17.74
156.590 56.20 47.65 8.51 65.83 55.83 -18.18
179.000 47.98 --- --- 65.17 55.17 -7.19
Line 1 10409.160 48.35 44.54 31.58 60.00 50.00 -15.46
16230.000 38.77 --- --- 60.00 50.00 -11.23
19720.000 37.45 --- --- 60.00 50.00 -12.55
154.500 56.22 48.10 8.26 65.94 55.94 -17.84
160.635 56.22 46.69 8.02 65.60 55.60 -18.91
171.000 50.49 --- --- 65.40 55.40 -4.91
Line 2 179.000 47.11 --- --- 65.17 55.17 -8.06
10290.000 44.09 --- --- 60.00 50.00 -5.91
20200.000 37.59 --- --- 60.00 50.00 -12.41

Test mode: IEEE 802.11b Channel 6
Power Connected Emissions Class B
Conductor Frequency Peak QP Average QP-limit AVG-limit Margin
(KHz) (dBµV) (dBµV) (dBµV) (dBµV) (dBµV) (dB)
155.045 56.47 48.19 8.49 65.91 55.91 -17.72
166.000 52.00 --- --- 65.54 55.54 -3.54
183.000 44.84 --- --- 65.06 55.06 -10.22
Line 1 3062.000 33.84 --- --- 56.00 46.00 -12.16
9880.000 46.90 --- --- 60.00 50.00 -3.10
16160.000 37.70 --- --- 60.00 50.00 -12.30
154.590 56.51 48.30 8.22 65.94 55.94 -17.64
159.135 56.51 47.25 8.18 65.69 55.69 -18.44
187.000 43.63 --- --- 64.94 54.94 -11.31
Line 2 3004.000 31.46 --- --- 56.00 46.00 -14.54
10240.000 43.70 --- --- 60.00 50.00 -6.30
19720.000 40.23 --- --- 60.00 50.00 -9.77

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 19/20

Test mode: IEEE 802.11b Channel 11
Power Connected Emissions Class B
Conductor Frequency Peak QP Average QP-limit AVG-limit Margin
(KHz) (dBµV) (dBµV) (dBµV) (dBµV) (dBµV) (dB)
153.545 56.68 48.72 8.93 66.00 56.00 -17.28
159.090 56.68 47.79 8.66 65.69 55.69 -17.90
174.000 49.90 --- --- 65.31 55.31 -5.41
Line 1 3126.000 35.70 --- --- 56.00 46.00 -10.30
10390.000 46.78 --- --- 60.00 50.00 -3.22
19720.000 39.94 --- --- 60.00 50.00 -10.06
155.135 56.63 48.45 8.40 65.91 55.91 -17.46
157.770 56.68 47.99 8.57 65.77 55.77 -17.78
172.000 50.86 --- --- 65.37 55.37 -4.51
Line 2 6980.000 36.20 --- --- 60.00 50.00 -13.80
10390.000 43.87 --- --- 60.00 50.00 -6.13
19720.000 40.10 --- --- 60.00 50.00 -9.90

Test mode: IEEE 802.11g Channel 1
Power Connected Emissions Class B
Conductor Frequency Peak QP Average QP-limit AVG-limit Margin
(KHz) (dBµV) (dBµV) (dBµV) (dBµV) (dBµV) (dB)
153.725 55.22 46.90 9.27 66.00 56.00 -19.10
159.000 49.97 --- --- 65.74 55.74 -5.77
167.000 46.67 --- --- 65.51 55.51 -8.84
Line 1 3094.000 32.90 --- --- 56.00 46.00 -13.10
10190.000 45.10 --- --- 60.00 50.00 -4.90
19720.000 36.50 --- --- 60.00 50.00 -13.50
153.000 52.78 --- --- 65.91 55.91 -3.13
155.000 52.02 --- --- 65.86 55.86 -3.84
161.000 49.99 --- --- 65.69 55.69 -5.70
Line 2 172.000 44.53 --- --- 65.37 55.37 -10.84
7220.000 35.67 --- --- 60.00 50.00 -14.33
10090.000 41.26 --- --- 60.00 50.00 -8.74

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Test Report ---------------------------------------------------------------------------------- 20/20

Test mode: IEEE 802.11g Channel 6
Power Connected Emissions Class B
Conductor Frequency Peak QP Average QP-limit AVG-limit Margin
(KHz) (dBµV) (dBµV) (dBµV) (dBµV) (dBµV) (dB)
154.860 56.13 47.70 9.36 65.94 55.94 -18.24
159.000 52.35 --- --- 65.74 55.74 -3.39
179.000 43.89 --- --- 65.17 55.17 -11.28
Line 1 6710.000 37.21 --- --- 60.00 50.00 -12.79
10480.000 44.96 --- --- 60.00 50.00 -5.04
20200.000 38.97 --- --- 60.00 50.00 -11.03
155.000 56.36 47.85 9.05 65.91 55.91 -18.06
159.000 52.67 --- --- 65.74 55.74 -3.07
166.000 50.10 --- --- 65.54 55.54 -5.44
Line 2 180.000 43.59 --- --- 65.14 55.14 -11.55
10630.000 42.29 --- --- 60.00 50.00 -7.71
20200.000 38.80 --- --- 60.00 50.00 -11.20

Test mode: IEEE 802.11g Channel 11
Power Connected Emissions FCC Class B
Conductor Frequency Peak QP Average QP-limit AVG-limit Margin
(KHz) (dBµV) (dBµV) (dBµV) (dBµV) (dBµV) (dB)
153.680 56.65 48.67 9.41 66.00 56.00 -17.33
156.360 56.70 48.01 9.06 65.86 55.86 -17.85
163.000 52.44 --- --- 65.63 55.63 -3.19
Line 1 175.000 47.28 --- --- 65.29 55.29 -8.01
10140.000 45.68 --- --- 60.00 50.00 -4.32
16160.000 38.89 --- --- 60.00 50.00 -11.11
153.905 56.68 48.61 9.17 66.00 56.00 -17.39
156.680 56.77 48.12 8.82 65.83 55.83 -17.71
164.000 52.21 --- --- 65.60 55.60 -3.39
Line 2 175.000 47.75 --- --- 65.29 55.29 -7.54
10480.000 41.94 --- --- 60.00 50.00 -8.06
20200.000 37.02 --- --- 60.00 50.00 -12.98

Report No.: A5415060015, FCC Part15 Class II Permissive Change
Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Document Created: 2006-03-17 14:06:06
Document Modified: 2006-03-17 14:06:06

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