Tune up

FCC ID: N7NWP7610

Parts List/Tune Up Info

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FCCID_4188505

SIERRA WIRELESS INC.

Document #: Revision: 1.0 Page 2 of 2

The Sierra Wireless WP7610 wireless modem is equipped with radio to support
UMTS/HSDPA/HSUPA/HSPA+/LTE technologies. The main antenna/RF port supports the following
FCC regulated bands, maximum output power levels and factory tolerances:

Band UL Freq. (MHz) DL Freq. (MHz) Max Power
B2 1850 – 1910 1930 – 1990 23 dBm (+1/-3 dB)
B4 1710 – 1755 2110 – 2155 23 dBm (+1/-3 dB)
B5 824 – 849 869 – 894 23 dBm (+1.5/-3 dB)
B12 699 – 716 729 – 746 23 dBm (+1/-3 dB)
LTE
B13 777 – 787 746 – 756 23 dBm (+1/-3 dB)
B14 788 – 798 758 – 768 23 dBm (+1.5/-3 dB)
B17 704 – 716 734 – 746 23 dBm (+1/-3 dB)
B66 1710 – 1780 2110 – 2200 23 dBm (+1/-3 dB)
B2 1850 – 1910 1930 – 1990 23 dBm (+1/-3 dB)
WCDMA / HSDPA/
B4 1710 – 1755 2110 – 2155 23 dBm (+1/-3 dB)
HSUPA / HSPA+
B5 824 – 849 869 – 894 23 dBm (+1.5/-3 dB)

The Sierra Wireless WP7610 wireless modem calibration process is a set of RF TX, RX and
modulation tests that gather tuning values, which are saved inside each DUT. Each supported band
is calibrated separately, and so is each mode.

Calibration equipment consists of an RF signal generator, a power meter and a radio communication
test set that combines both. A mechanical fixture holds the DUT in place and is responsible for
reliably mating the RF connector of the jig to the DUT. The entire fixture is enclosed in an RF shield
box whose purpose is to prevent external RF signals from interfering or contributing to
measurements of the DUT's RF. RF shielded cable connecting the instrumentation to the jig is used
for the same reason. All of this equipment is mounted in a rack and is known as a Calibration test
station.

All TX power measurements made by the instruments must report the power at the DUT's RF
connector. This is not the same power that is seen at the test instrument because the RF signal loses
power as it travels through the RF cabling between the DUT and instrument, the longer the cable,
the greater the decrease. This phenomenon requires us to know how much the cable loss is, and
adjust for it during testing. Further test equipment and power meters have their own unique error
that is usually too large to be acceptable for calibration. A process known as RF Normalization
measures both the RF cable loss and meter inaccuracy values for a test station. These values allow
us to calculate the real power at the DUT connector.

The Calibration process is automated, with a host PC controlling both the test equipment and DUT.
The PC's Calibration program ensures that the tuning values found are reasonable by applying limits
to them, and by running calibration performance tests that get the DUT to use its internal
calibration values. If all these tests and limits checks pass then the DUT is shipped to the customer.

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2019 Sierra Wireless Inc.
This document contains information which is proprietary and confidential to Sierra Wireless Inc. Disclosure to persons other than the
officers, employees, agents, or subcontractors of the Company or licensee of this document without the prior written permission of Sierra
Wireless Inc. is strictly prohibited.

Document Created: 2019-02-28 17:48:47
Document Modified: 2019-02-28 17:48:47

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