Company Name:
Sandisk Corporation
Eut:
SanDisk SSD UATA 5000 1.8”
Client Reference Number:
QRTL06-334
Work Order Number:
2006137
Compliance Report
Page 17 of 17
9 CONDUCTED AND RADIATED TEST METHODOLOGY
9.1 C
ONDUCTED
E
MISSIONS
M
EASUREMENTS
The power line conducted emission measurements were performed in a Series 81 type shielded enclosure
manufactured by Rayproof. The EUT was assembled on a wooden table 80 centimeters high. Power was
fed to the EUT through a 50 ohm / 50 microhenry Line Impedance Stabilization Network (EUT LISN). The
EUT LISN was fed power through an A.C. filter box on the outside of the shielded enclosure. The filter box
and EUT LISN housing are bonded to the ground plane of the shielded enclosure. A second LISN, the
peripheral LISN, provides isolation for the EUT test peripherals. This peripheral LISN was also fed A.C.
power. A metal power outlet box, which is bonded to the ground plane and electrically connected to the
peripheral LISN, powers the EUT host peripherals.
The spectrum analyzer was connected to the A.C. line through an isolation transformer. The 50-ohm
output of the EUT LISN was connected to the spectrum analyzer input through a Solar 7 kHz high-pass
filter. The filter is used to prevent overload of the spectrum analyzer from noise below 7 kHz. Conducted
emission levels were measured on each current-carrying line with the spectrum analyzer operating in the
CISPR quasi-peak mode (or peak mode if applicable). The analyzer's 6 dB bandwidth was set to 9 kHz.
No video filter less than 10 times the resolution bandwidth was used. Average measurements are
performed in linear mode using a 10 kHz resolution bandwidth, a 1 Hz video bandwidth, and by increasing
the sweep time in order to obtain a calibrated measurement. The emission spectrum was scanned from
150 kHz to 30 MHz. The highest emission amplitudes relative to the appropriate limit were measured and
have been recorded in this report.
9.2 R
ADIATED
E
MISSIONS
M
EASUREMENTS
Before final measurements of radiated emissions were made on the open-field three/ten meter range, the
EUT was scanned indoor at one and three meter distances. This was done in order to determine its
emissions spectrum signature. The physical arrangement of the test system and associated cabling was
varied in order to determine the effect on the EUT's emissions in amplitude, direction and frequency. This
process was repeated during final radiated emissions measurements on the open-field range, at each
frequency, in order to insure that maximum emission amplitudes were attained.
Final radiated emissions measurements were made on the three/ten-meter, open-field test site. The EUT
was placed on a nonconductive turntable 0.8 meter above the ground plane. The spectrum was examined
from 30 MHz to 1000 MHz.
At each frequency, the EUT was rotated 360
°
, and the antenna was raised and lowered from 1 to 4 meters
in order to determine the emission’s maximum level. Measurements were taken using both horizontal and
vertical antenna polarizations. For frequencies between 30 and 1000 MHz, the spectrum analyzer’s 6 dB
bandwidth was set to 120 kHz, and the analyzer was operated in the CISPR quasi-peak detection mode.
For emissions above 1000 MHz, emissions are measured using the average detector function with a
minimum resolution bandwidth of 1MHz. No video filter less than 10 times the resolution bandwidth was
used. The highest emission amplitudes relative to the appropriate limit were measured and recorded in this
report.
Note: Rhein Tech Laboratories, Inc. has implemented procedures to minimize errors that occur from test
instruments, calibration, procedures, and test setups. Test instrument and calibration errors are
documented from the manufacturer or calibration lab. Other errors have been defined and calculated within
the Rhein Tech quality manual, section 6.1. Rhein Tech implements the following procedures to minimize
errors that may occur: yearly as well as daily calibration methods, technician training, and emphasis to
employees on avoiding error.
