Figure 15: Acu Assembly - NorthStar 961 Install Manual

961/962 INSTALLATION MANUAL Revision A
The bottom of the base is threaded (1"– 14) to mount onto an antenna
mast or standard deck mount.
Maintaining the ACU's weathertight seal between its upper and
lower halves requires only hand-tightening the two together.
Using a wrench or other tool may distort the gasket or housing/
rubber O-ring inside or break the coupler base.
The ACU connects to the 961X/962X with RG-58U coaxial cable, which
carries signals to the differential receiver and DC power to the ACU
amplifier. See Figure 16 below for the correct AN150/8410 wiring. A
25-foot length of this cable is supplied with the unit; this cable can be
extended up to a length of 300 feet. The cable passes up through the
hollow ACU base and connects to the PL-259 (UHF) connector at the
bottom of the ACU. For UHF connector preparation, see"DGPS antenna
cable connectors" beginning on page 27.
The connection to the UHF connector must be made before
the ACU is screwed into its base.
SECTION TWO - Installation

Figure 15: ACU assembly

CAUTION!
NOTE:
Page 25