CPI 1.2M Ku-BAND Series User manual

4096-1000
April 13, 2021
ASSEMBLY MANUAL
Revision A
SERIES 1122 1.2M Ku-BAND
ANTENNA SYSTEM
SATCOM & Antenna Technologies, Inc.
1700 Cable Drive NE
Conover, NC 28613 USA
t [phone]
f [phone]
www.cpii.com

1.2M Ku-BAND
SERIES 1122 ANTENNA SYSTEM
A
Updated to CPI format.
04/13/21
R.F.
-
ORIGINAL RELEASE
12/11/19
P.G.
REV.
DESCRIPTION
DATE
APPROVED

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CPI Satcom & Antenna Technologies 1.2M Ku-BAND SERIES 1122
2
Series 1122 Antenna System

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TABLE OF CONTENTS
SECTION TITLE
I INTRODUCTION
1.0 GENERAL INFORMATION
1.1 UNPACKING & INSPECTION
1.2 FREIGHT DAMAGE
1.3 MATERIAL MISSING OR DAMAGED
1.4 MECHANICAL INSTALLATION TOOLS
1.5 FOUNDATION INTERFACE
II ANTENNA SYSTEM ASSEMBLY
2.1 MOUNT & REFLECTOR ASSEMBLY
2.2 FEED SUPPORT ASSEMBLY
III ANTENNA POINTING
3.0 ANTENNA POINTING
IV MAINTENANCE
4.0 MAINTENANCE OVERVIEW
4.1 REFLECTOR
4.2 MOUNT & REFLECTOR SUPPORT
4.3 FEED & FEED SUPPORT

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SECTION I INTRODUCTION
1.0 GENERAL INFORMATION
This manual describes the assembly and installation of CPI’s 1.2 meter antenna
system. The CPI 1.2 meter is a rugged and reliable antenna which will operate in
the Ku-Band frequency with high efficiency and at the same time successfully
withstand the effects of the environment. The CPI 1.2 meter has an f/d ratio of 0.6
and an offset angle of 22.6°. This system is commonly used with a CPI ku-band
feed assembly.
These instructions are listed by sections that cover all areas of assembly and
installation. Additional sections are included in the manual to provide information
on antenna alignment to the satellite and maintenance.
1.1 UNPACKING AND INSPECTION
The system containers should be unpacked and inspected at the earliest date to
insure that all material has been received and is in good condition. A complete
packing list for each major component is supplied.
1.2 FREIGHT DAMAGE
Any damage to materials while in transit should be immediately directed to the
freight carrier. He will instruct you onmatters regarding any freightdamage claims.
1.3 MATERIAL –MISSING OR DAMAGED
Any questions regarding missing or damaged materials that are not due to the
freight carrier should be directed to CPI’s Customer Service Department at:
CPI Satcom & Antenna Technologies
1700 Cable Drive NE
Conover NC 28613 USA
Phone [phone]
www.cpii.com

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1.4 MECHANICAL INSTALLATION TOOLS
The hardware supplied with this antenna system is U.S. SAE standard size.
However, the sizes have been chosen to allow use with compatibly sized metric
wrenches as shown in the table below.
HARDWARE SIZE
SAE WRENCH SIZE
METRIC WRENCH
SIZE
MAXIMUM REC.
TORQUE
5/16” Bolt
1/2”
13 mm
12 ft-lbs
(16.3 n-m)
3/8” Bolt
9/16”
14 or 15 mm
20 ft-lbs
(27.2 n-m)
Also recommended for installation:
Compass - graduated to .5°
Adjustable Wrench
Hex wrench or screwdriver (for LNB and BUC install)
1.5 FOUNDATION INTERFACE
The required interface from the foundation to the mount is 2.88" O.D. (2-1/2”
schedule 40 pipe) or a 3” O.D. x 0.25” wall (76mm O.D. x 5.0mm wall) steel pipe.
A suggested in-ground foundation is shown in Figure 1.
Also available from CPI, as options, are a kingpost pedestal mount and/or a non-
penetrating mast mount.

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SUGGESTED IN-GROUND FOUNDATION
NOTES:
1. 2 1/2” schedule 40 pipe should conform to ASTM A53.
2. All concrete should conform to building code standards and have a minimum compressive
strength of 3000 PSI at 28 days. (Per ACI-318-77)
3. Soil bearing capacity should be no less than 2000 PSF.
4. Concrete should be poured against undisturbed soil.
5. Allow concrete 24 hours set time before installation of antenna.
6. The antenna should be properly grounded to meet applicable local codes.
7. Minimum depth as shown or extend to local frost line.
8. Foundation meets the design requirements as set forth by the uniform building code.
(1982 edition)
(ABOVE DESIGN IS A SUGGESTED FOUNDATION ONLY. CPI DOES NOT REPRESENT OR
WARRANT THAT ANY PARTICULAR DESIGN OR SIZE OF FOUNDATION IS APPROPRIATE FOR
ANY LOCALITY OR EARTH STATION INSTALLATION.)
30.0”
30.0”
SEE NOTE #7
45
12.0”
SECTION A - A
A
A
2 1/2” SCH 40 PIPE
(2.88”O.D.)
FIGURE 1.

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SECTION II ANTENA ASSEMBLY
2.1 REFLECTOR AND SUPPORT ASSEMBLY
REFLECTOR AND SUPPORT ASSEMBLY PART LIST
ITEM
PART NO.
DESCRIPTION
QTY
1
0179-245
1.2M .6 F/D Reflector
1
2
0185-4332
Az/El Positioner Assembly
1
3
0158-246
Interface Plate
2
4
8032-008
Bolt, Hex Head, 3/8”-16 x 1.00”
4
5
8201-042
Flat Washer, 3/8”
4
6
8202-042
Lock Washer, 3/8”
4
7
8102-007
Nut, Hex, 3/8”-16
4
8
8319-006
Screw, Hi-Lo Thread, 27/64” x 1.38”
4
Step 1
Install the interface plates (Item 3) to the az/el positioner (Item 2) as shown. Insert the
3/8” Hex bolts (Item 4) through the plates and secure with flat washers, lock washers,
and nuts (Items 5, 6, 7).
2
3
4
6
5
7
Az/El
Positioner
Assembly

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STEP 2.
The Az/El Positioner Assembly is supplied with a
Mast Sleeve for use on 2.88” OD mast pipes.
If the install is on a 2.88” OD mast pipe, the Mast
Sleeve should be inserted into the Canister
before proceeding to reduce the Canister’s
inside diameter appropriately.
If the install is on a 3.00” OD (76mm OD) mast
pipe, the Mast Sleeve can be omitted and
discarded.
STEP 3.
Slide the Az/El Positioner Assembly over the top
of the Mast Pipe until fully seated.
Snug but do not tighten the three Canister
Lockdown Bolts.
Canister
Lockdown Bolts
(3 Places)
Mast Pipe

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STEP 4.
Align the four holes in the Reflector with the four holes in the Az/El Positioner and attach
using a Hi-Lo screw in each of the four holes. Tighten the four screws to 15 ft/lbs for the
1.2M antenna
Note: The “bottom” and “sides” of the Reflector can be identified by the
presence of a Feed Rod mounting hole not present in the “top” of the Reflector.
Reflector
Hi-Lo Screws
(4 Places)
Top of Reflector
(No Hole)
Bottom of Reflector
(Feed Rod Hole)

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2.2 FEED AND FEED SUPPORT ASSEMBLY
The Series 1122 Antenna can be equipped with a variety of RxO and RxTx feed
assemblies. Refer to the instructions packed with the feed assembly to correctly install
the feed system. When complete, proceed to Section 3.0 to finish the antenna
alignment.

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SECTION III ANTENNA POINTING
3.0 ANTENNA POINTING
Note: The 1.2 meter reflector contains a 22.6° elevation offset look angle.
Therefore, when the reflector aperture is perpendicular to the ground, the antenna
is actually looking 22.6° in elevation. The Elevation Scale located on the side of
the Az/El Positioner allows for this offset angle.
Note: The following alignment procedure is intended only as a general reference
guide for this antenna. For proper antenna performance, accurate
alignment is critical. Therefore, it is recommended that your own detailed
procedure be used or contact CPI Technical Support Department for
additional recommendations.
STEP 1: BEFORE ADJUSTING ELEVATION, LOOSEN THE HARDWARE ON
BOTH SIDES OF THE POSITIONER (2 PLACES EACH SIDE). REFER
TO FIGURE 3-1 FOR LOCATION.
Adjust the Reflector up or down in elevation by turning the 5/16” Elevation
Adjust Bolt at the top of the Az/El Positioner until the desired elevation is
read on the side of the Positioner. See Figure 3-1.
Once adjusted, snug the hardware at the sides of the Positioner.
Note: The Az/El Positioner has a scale on each side of the elevation
bracket labeled “A” and “B” as shown below. For the Series 1122
antenna, the “B” scale should be used (left side of Az/El Positioner
when viewed from behind).
Note: This scale is used for nominal readings and is accurate to ±2
degrees.
Note: Elevation Adjust Bolt is for adjustment only, it is not intended
to be part of the structural integrity of the assembly, therefore
“tightening”the Elevation Adjust Bolt is not necessary.
“A” Scale
(Right Side)
Not Used
“B” Scale
(Left Side)
Correct

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Figure 3-1
STEP 2: Coarse Azimuth Adjustment: With the electronics set to acquire the
satellite, rotate the entire Antenna in azimuth (about the mast pipe) until the
target satellite is identified. Once the target satellite is located, securely
tighten the Canister hardware (3 places). See Figure 3-2.
Read Scale At
Indicator Mark
Elevation
Adjust Bolt
Loosen Before
Adjustment
(Each Side)
“B” Scale
Loosen Before
Adjustment
(Each Side)
Figure 3-2
Canister Hardware
(3 Places)
Coarse Adjust About
Mast Pipe

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STEP 3: Fine Azimuth Adjustment: Once the target satellite is located, fine
adjustments in azimuth can be made by loosening the three Locking Hex
Nuts on the underside of the Canister top plate of the Az/el Positioner
and the two hex nuts under the Azimuth Pivot Posts.
With this hardware loosened, adjustments in azimuth can be made by
turning the Azimuth Adjust Bolt at the back of the Az/El Positioner in either
direction. See Figure 3-3.
Note: Azimuth Adjust Rod is for adjustment only, it is not intended to
be part of the structural integrity of the assembly, therefore
“tightening”the Azimuth Adjust Bolt is not necessary.
STEP 4: Peak the antenna signal by fine adjustments made in both Azimuth and
Elevation until the optimum signal is achieved.
STEP 5: Securely tighten all hardware used for adjustment.
Figure 3-3
Locking Hex Nuts
(3 Places)
Azimuth Pivot Post
Hex Nuts
(2 Places)
Azimuth Adjust Bolt

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SECTION IV MAINTENANCE
4.0 MAINTENANCE OVERVIEW
After installation, the antenna requires only periodic inspection. It is
anticipated that maintenance, if required, will be minimal and easily handled
by a local or in-house maintenance staff.
4.1 REFLECTOR
CPI’s reflector does not require any maintenance. The composite construction of
the reflector is virtually impervious to any damages that could be caused by
weather or atmospheric conditions. It is only necessary to inspect for any physical
damage done by vandalism or very severe weather conditions.
Should any damage be detected to a portion of the reflector, contact the Customer
Service Department at CPI for recommendations involving reflector repair.
4.2 MOUNT AND REFLECTOR SUPPORT STRUCTURE
The mount and reflector support structure supplied with this antenna is of steel
construction and have a galvanized finish.
If there are any signs of structural failure, the mount members that are damaged
should be repaired or replaced.
4.3 FEED AND FEED SUPPORT
The feed support rods should be inspected to insure that all hardware is secure.
The feed/radio mounting bolts should be tight.
The feed horn window should be inspected to insure that it is intact so that no
moisture can collect inside the feed horn.