Qualcomm GSP-1620 Modem User Manual


 
Quick Bench Set-Up
80-99208-1 Rev. D 2-11
3. Plug the other antenna cable into the receive (Rx)
connector on the antenna.
4. Secure the antenna to a flat surface using six M4 screws
through the six mounting holes. To prevent moisture and
dirt from getting underneath the antenna and onto the
connectors, you can use an O-ring (2.050 inches in
diameter by 0.103 inch wide, silicone or ethylene-
propylene) if the mounting surface is smooth, or adhesive
caulking if the surface is rough.
Note
For complete details about sealing the antenna to a flat mounting
surface, or for information about mounting antennas on poles, see
Mounting Antennas at the Field Site on page 7-27.
Mounting the Modem
For quick bench set-up, you probably do not need to mount
the modem to a surface or in an enclosure, as it would be
mounted in an OEM product for use in the field.
If you do wish to fasten the modem to a rigid structure, you
will need six M3 screws (see mounting holes in Figure 2-1).
For details, see Modem Mounting Guidelines on page 7-19.
For details on acceptable environmental conditions for the
modem, see Environmental Specifications on page 7-30.
For a tip on how to mount the modem and antenna using a
box, see Connecting and Mounting the Antenna on page 2-9.
Grounding the System
You have several options for grounding the modem; see
Grounding on page 7-18.
Caution
The RF connector ground is the same as the signal and power ground.
Incorrectly wiring these grounds could cause ground loops in the final
installation.