Product Info

MORLAB
Shenzhen Morlab Communications Technology Co., Ltd.
FL1-3, Building A, FeiYang Science Park, No.8 LongChang Road,
Block67, BaoAn District, ShenZhen , GuangDong Province, P. R. China
Tel: [phone] Fax: [phone]
Http://www.morlab.cn E-mail: [e-mail]
REPORT No.：SZ21070039S02
Page 35 of 53
must be considered independently in each band according to the normally required OFDM SAR
measurement and probe calibration frequency points requirements.
C) OFDM Transmission Mode SAR Test Configuration and Channel Selection Requirements
The initial test configuration for 5 GHz OFDM transmission modes is determined by the 802.11
configuration with the highest maximum output power specified for production units, including
tune-up tolerance, in each standalone and aggregated frequency band. SAR for the initial test
configuration is measured using the highest maximum output power channel determined by the
default power measurement procedures. When multiple configurations in a frequency band have the
same specified maximum output power, the initial test configuration is determined according to the
following steps applied sequentially.
1. The largest channel bandwidth configuration is selected among the multiple configurations with the
same specified maximum output power.
2. If multiple configurations have the same specified maximum output power and largest channel
bandwidth, the lowest order modulation among the largest channel bandwidth configurations is
selected.
3. If multiple configurations have the same specified maximum output power, largest channel band
width and lowest order modulation, the lowest data rate configuration among these configurations
is selected.
4. When multiple transmission modes (802.11a/g/n/ac) have the same specified maximum output
power, largest channel bandwidth, lowest order modulation and lowest data rate, the lowest order
802.11 mode is selected; i.e., 802.11a is chosen over 802.11n then 802.11ac or 802.11g is
chosen over 802.11n. After an initial test configuration is determined, if multiple test channels have
the same measured maximum output power, the channel chosen for SAR measurement is
determined according to the following. These channel selection procedures apply to both the initial
test configuration and subsequent test configuration(s), with respect to the default power
measurement procedures or additional power measurements required for further SAR test
reduction. The same procedures also apply to subsequent highest output power channel(s)
selection.
5. The channel closest to mid-band frequency is selected for SAR measurement.
6. For channels with equal separation from mid-band frequency; for example, high and low channels
or two mid-band channels, the higher frequency (number) channel is selected for SAR
measurement.
D) SAR Test Requirements for OFDM configurations
When SAR measurement is required for 802.11 a/n/ac OFDM configurations, each standalone and
frequency aggregated band is considered separately for SAR test reduction. When the
sametransmitter and antenna(s) are used for U-NII-1 and U-NII-2A bands, additional SAR test
reduction Vapplies. When band gap channels between U-NII-2C band and 5.8 GHz U-NII-3 or