JBL ON STAGE III IIIP (serv.man6) EMC - CB Certificate ▷ View online
Audix Technology (Shenzhen) Co., Ltd. Report No. ACS-E07439 page 33 of 66
9. RF FIELD STRENGTH SUSCEPTIBILITY TEST
9.1. Test Equipments
Item Equipment
Manufacturer Model No. Serial No.
Last Cal.
Cal. Interval
1. Signal Generator
HP
8648A
3625U00573 May 11, 07 1 Year
2.
Amplifier
A&R
100A250 19368
NCR
NCR
3.
Amplifier
A&R
100W/1000M1
17028 NCR NCR
4.
Isotropic Field
Monitor
Monitor
A&R
FM2000
16829
Jun. 06, 07 1 Year
5.
Isotropic Field Probe
A&R
FP2000
16755
Jun. 06, 07 1 Year
6.
Log-periodic Antenna
A&R
AT1080
16512
Mar.06, 07 1 Year
7.
PC
N/A
486DX2
N/A
N/A
N/A
8.
RF
Cable
MIYAZAKI 5D-2W
No.1/2/3
Mar.06, 07 1/2 Year
9.2. Block Diagram of Test Setup
(EUT: Computer Speaker System)
9.2.1.R/S Test Setup
3 Meters
EUT and Support
System
0.8 Meter
Anechoic
Chamber
Power Amp
Signal
Generator
Measurement
Room
PC
AC Mains
Keyboard
Mouse
EUT
AC Mains
Monitor
a: Audio Cable
b: USB Cable
: Core
b: USB Cable
: Core
a
Adaptor
b
Audix Technology (Shenzhen) Co., Ltd. Report No. ACS-E07439 page 34 of 66
9.3. Test Standard
EN 55024: 1998+A1:2001+A2: 2003 (IEC 61000-4-3: 2002+A1: 2002)
(Severity Level: 2 at 3V / m)
9.4. Severity Levels and Performance Criterion
9.4.1. Severity level
Level
Test Field Strength V/m
1.
1
2.
3
3.
10
X Special
9.4.2. Performance
criterion
: A
9.5. EUT Configuration
The configuration of EUT are listed in Section 3.5.
9.6. Operating Condition of EUT
Same as radiated test which is listed in Section 4.6. except the test set up replaced by
Section 9.2.
9.7. Test Procedure
Testing was performed in a Fully anechoic chamber as recommended by IEC 61000-4-3.
The EUT was placed on an 80 cm high non-conductive table located in the area of field
uniformity. The radiating antenna was placed 3m in front of the EUT and Support system,
and dwell time of the radiated interference was controlled by an automated,
computer-controlled system. The signal source was stepped through the applicable
frequency range at a rate no faster than 1％ of the fundamental. The signal was amplitude
modulated 80％ over the frequency range 80 MHz to 1GHz at a level of 3 V/m. The
dwell time was set at 3.0 s. Field presence was monitored during testing via a field probe
placed in close proximity to the EUT. Throughout testing, the EUT was closely monitored
for signs of susceptibility. The test was performed with the antennae oriented in both a
horizontal and vertical polarization.
The EUT was placed on an 80 cm high non-conductive table located in the area of field
uniformity. The radiating antenna was placed 3m in front of the EUT and Support system,
and dwell time of the radiated interference was controlled by an automated,
computer-controlled system. The signal source was stepped through the applicable
frequency range at a rate no faster than 1％ of the fundamental. The signal was amplitude
modulated 80％ over the frequency range 80 MHz to 1GHz at a level of 3 V/m. The
dwell time was set at 3.0 s. Field presence was monitored during testing via a field probe
placed in close proximity to the EUT. Throughout testing, the EUT was closely monitored
for signs of susceptibility. The test was performed with the antennae oriented in both a
horizontal and vertical polarization.
All the scanning conditions are as follows :
Condition of Test
Remarks
----------------------------------------------
----------------------------------
1. Test Fielded Strength
3 V/m (Severity Level 2)
2. Radiated Signal
80% amplitude modulated with a
1kHz sine wave
3. Scanning Frequency
80 - 1000 MHz
4. Sweeping time of radiated
0.0015 decade/s
5. Dwell Time
3.0 Sec.
9.8. Test Results
PASS.
The EUT was tested and all the test results are listed in next page.
The EUT was tested and all the test results are listed in next page.
Audix Technology (Shenzhen) Co., Ltd. Report No. ACS-E07439 page 35 of 66
RF Field Strength Susceptibility Test Results
Audix Technology(Shenzhen) Co.,Ltd.
Date : 07/26/2007
Applicant
:
Harman Multimedia DBA
Harman Motive Inc.
Harman Motive Inc.
Test Date
:
Jul.08, 2007
EUT
:
Computer Speaker System
Temperature
: 24
℃
M/N
:
jbl on stage lll
Humidity
: 54
％
Test Voltage
:
DC 12V Adaptor Input AC
230V/50Hz
230V/50Hz
Test Mode
: Data Transmitting
Test Engineer
:
Jolly Criterion
: A
Pressure
:
100.6KPa
Frequency Range
80 MHz -1000MHz
Modulation:
;
AM
Pulse
none 1 kHz 80%
Frequency Rang 1:
80 MHz -1000MHz
Steps
1%
1%
Horizontal
Vertical
Front PASS
PASS
Right PASS
PASS
Rear PASS
PASS
Left PASS
PASS
Test Equipment :
1. Signal Generator : HP 8648A
2. Power Amplifier : A&R 500A/100;100W/1000M.
3. Power Antenna : A&R AT-1080.
4. Field Monitor : A&R FM2000.
Audix Technology (Shenzhen) Co., Ltd. Report No. ACS-E07439 page 36 of 66
10. ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST
10.1.Test Equipments
Item Equipment Manufacturer Model No.
Serial No. Last Cal.
Cal. Interval
1.
Burst
Tester
Tester
HAEFELY
PEFT-JUNIOR 083762-12 May 11, 07 1 Year
10.2.Block Diagram of Test Setup
(EUT: Computer Speaker System)
10.2.1.EFT Test Setup
10.3.Test Standard
EN 55024: 1998+A1:2001+A2: 2003 (IEC 61000-4-4:2006)
(Severity Level 2 at 1kV, Severity Level 2 at 0.5kV)
(Severity Level 2 at 1kV, Severity Level 2 at 0.5kV)
10.4.Severity Levels and Performance Criterion
10.4.1.Severity level
Open Circuit Output Test Voltage ±10％
Level
On Power Supply
Lines
On I/O (Input/Output)
Signal data and control lines
1.
0.5 kV
0.25 kV
2.
1 kV
0.5 kV
3.
2 kV
1 kV
4.
4 kV
2 kV
X Special
Special
10.4.2.Performance criterion : B
AC Mains
EUT and
Support system
AC Mains
Test
Generator
PC
AC Mains
Keyboard
Mouse
EUT
AC Mains
Monitor
a: Audio Cable
b: USB Cable
: Core
b: USB Cable
: Core
a
Adaptor
b
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