North Star GPS/WASS CHART NAGIVATOR GM9571M 用户手册
SECTION FOUR: Installing and wiring the 2701
957 Installation Manual, Revision C1
Page 29
If position data is intermittent, make sure you have the proper
cable length, and verify the quality of the antenna location and
the quality and proper termination of the connectors. Also,
make sure that the 2701’s ground lug terminal is securely
connected with a heavy gauge conductor to ship’s ground.
cable length, and verify the quality of the antenna location and
the quality and proper termination of the connectors. Also,
make sure that the 2701’s ground lug terminal is securely
connected with a heavy gauge conductor to ship’s ground.
Figure 12: Northstar AN205-P antenna dimensions
Connecting the 2701 to the
antenna
The 50-foot antenna cable connects the 2701 with the
AN205-P antenna. The cable length must be a maximum of 50
feet but can be shortened to the desired length.
AN205-P antenna. The cable length must be a maximum of 50
feet but can be shortened to the desired length.
Note: Installations that require a cable length from 50 to 100
feet should order the AN206 combo antenna and a 100-foot
length of coaxial cable from the Northstar Sales Department.
feet should order the AN206 combo antenna and a 100-foot
length of coaxial cable from the Northstar Sales Department.
Don’t make any tight bends in the cable, and fasten it along its
length to avoid chafing or whipping or any kind. Coil up any
unused length of cable. Be sure that the cable connectors are
securely fastened.
length to avoid chafing or whipping or any kind. Coil up any
unused length of cable. Be sure that the cable connectors are
securely fastened.
CAUTION!
Don’t mount the antenna near rotating warning
beacons or strobe lights, electric motors,
fluorescent lights, or other RF sources. These can
create RF interference to the differential reception.
beacons or strobe lights, electric motors,
fluorescent lights, or other RF sources. These can
create RF interference to the differential reception.
7.00
2.5
3.5
TNC
Use the locking nut shown to prevent
rotation of the antenna or bottoming
out of the mounting stanchion into the
threaded mount portion of the antenna.
If done with enough force, either of
these may break the antenna.
rotation of the antenna or bottoming
out of the mounting stanchion into the
threaded mount portion of the antenna.
If done with enough force, either of
these may break the antenna.