System Description

TEL : [phone]
Page
23 of 173
FAX : [phone]
Issued Date
:
Feb. 14, 2020
Form version: 181113
FCC SAR TEST REPORT
Report No. : FA9O2119
6.1 E-Field Probe
The SAR measurement is conducted with the dosimetric probe (manufactured by SPEAG).The probe is specially
designed and calibrated for use in liquid with high permittivity. The dosimetric probe has special calibration in liquid at
different frequency. This probe has a built in optical surface detection system to prevent from collision with phantom.
<ES3DV3 Probe>
Construction
Symmetric design with triangular core
Interleaved sensors
Built-in shielding against static charges
PEEK enclosure material (resistant to organic
solvents, e.g., DGBE)
Frequency
10 MHz – 4 GHz;
Linearity: ±0.2 dB (30 MHz – 4 GHz)
Directivity
±0.2 dB in TSL (rotation around probe axis)
±0.3 dB in TSL (rotation normal to probe axis)
Dynamic Range
5 µW/g – >100 mW/g;
Linearity: ±0.2 dB
Dimensions
Overall length: 337 mm (tip: 20 mm)
Tip diameter: 3.9 mm (body: 12 mm)
Distance from probe tip to dipole centers: 3.0 mm
<EX3DV4 Probe>
Construction
Symmetric design with triangular core
Built-in shielding against static charges
PEEK enclosure material (resistant to organic
solvents, e.g., DGBE)
Frequency
10 MHz – >6 GHz
Linearity: ±0.2 dB (30 MHz – 6 GHz)
Directivity
±0.3 dB in TSL (rotation around probe axis)
±0.5 dB in TSL (rotation normal to probe axis)
Dynamic Range
10 µW/g – >100 mW/g
Linearity: ±0.2 dB (noise: typically <1 µW/g)
Dimensions
Overall length: 337 mm (tip: 20 mm)
Tip diameter: 2.5 mm (body: 12 mm)
Typical distance from probe tip to dipole centers: 1
mm
6.2 Data Acquisition Electronics (DAE)
The data acquisition electronics (DAE) consists of a highly sensitive
electrometer-grade preamplifier with auto-zeroing, a channel and
gain-switching multiplexer, a fast 16 bit AD-converter and a command
decoder and control logic unit. Transmission to the measurement server is
accomplished through an optical downlink for data and status information as
well as an optical uplink for commands and the clock.
The input impedance of the DAE is 200 MOhm; the inputs are symmetrical
and floating. Common mode rejection is above 80 dB.
Fig 5.1 Photo of DAE