ViaSat VS1300 User manual

75 cm ODU (VS1300) Assembly Job Aid
Release Date: October 2013
© 2006 - 2014 ViaSat, Inc. Page 1of 7Proprietary – For use only pursuant to
company approval and instructions
Terms of use.
Summary
This Job Aid covers:
Verify AZ/EL Assembly Alignment 
Antenna Back Bracket Assembly 
Transport 
On Site Assembly 
This Job Aid supports all Technician audiences. This job aid covers the VS1200 ODU antennas.
See 75cm ODU (VS1100) and (VS1200) Assembly Job Aid for assembly instructions for the VS1100 and
VS1200 ODUs. These documents is available in the eGuide.
Verify AZ/EL Assembly Alignment
Aligning the Azimuth
The AZ/EL assembly consists of the Tube Canister, Azimuth Plate, Azimuth Base, and Elevation Bracket.
Step Action
1. Loosen the bolts on the
bottom of the AZ/EL
assembly.
2. Turn the Fine Azimuth
adjustment nut until the
indicators on the base of
the AZ/EL are at Zero
(0).

75 cm ODU (VS1300) Assembly Job Aid
Release Date: October 2013
© 2006 - 2014 ViaSat, Inc. Page 2of 7Proprietary – For use only pursuant to
company approval and instructions
Terms of use.
Step Action (continued)
3. Once the azimuth is centered, retighten the bolts on the bottom of the AZ/EL assembly to
secure the setting while the antenna is being built.
IMPORTANT: The alignment of the Fine Azimuth Adjustment assembly is critical. If the Fine
Adjustment is misaligned, it may not be possible to adjust the Azimuth to the satellite.
Elevation Gauge Adjustment
The following information provides the steps used to set the antenna elevation prior to assembly.
Step Action
1. Pre-set the elevation as per the Work
Order to the approximate value. Ensure
the elevation lock down bolts are
loosened, and then loosen the top nut on
the elevation rod. Wind the nut up out of
the way.
2. Manually adjust the elevation setting to
the relevant position by turning the
Elevation Adjustment Nut.
Note: The elevation is measured with the
etched line just below the lock down bolt.

75 cm ODU (VS1300) Assembly Job Aid
Release Date: October 2013
© 2006 - 2014 ViaSat, Inc. Page 3of 7Proprietary – For use only pursuant to
company approval and instructions
Terms of use.
Step Action (continued)
3. When the coarse elevation adjustment is
complete, wind the top nut down the
elevation rod until it bottoms out on the
cast pivot bracket. Tighten the elevation
lock down bolts on the AZ/EL assembly.
This will secure the setting while the
antenna is being built.
Antenna Back Bracket Assembly
The following information provides the steps used to build the Antenna Back Bracket Assembly.
Step Action
1. Construct the Back
Adjustment Assembly by
fastening the Skew Plate to
the front of the Elevation
Bracket, through the
Antenna Back Bracket. Align
the holes that are closer-set
to the top of the Antenna
Back Bracket. Pass four
Carriage Bolts through the
skew plate, then the
Antenna Back Bracket, and
finally through the front of
the Elevation Bracket.

75 cm ODU (VS1300) Assembly Job Aid
Release Date: October 2013
© 2006 - 2014 ViaSat, Inc. Page 4of 7Proprietary – For use only pursuant to
company approval and instructions
Terms of use.
Step Action (continued)
2. At assembly set the skew to
90 degrees. The skew will be
changed during pointing and
peaking of the antenna.
Secure the Skew Plate using
a flanged nut on each
Carriage Bolt.
Transport
Transport the Reflector, Antenna Back Bracket assembly, the Boom Arm and the boxed eTRIA to the
installation location.

75 cm ODU (VS1300) Assembly Job Aid
Release Date: October 2013
© 2006 - 2014 ViaSat, Inc. Page 5of 7Proprietary – For use only pursuant to
company approval and instructions
Terms of use.
On Site Assembly
Step Action
1. Attach the Boom Arm Assembly:
Slide the Boom Arm into the slots on
the Back Bracket. Secure the Boom
Arms to the back bracket with four
hex head bolts. Tighten the bolts to
secure the assembly.

75 cm ODU (VS1300) Assembly Job Aid
Release Date: October 2013
© 2006 - 2014 ViaSat, Inc. Page 6of 7Proprietary – For use only pursuant to
company approval and instructions
Terms of use.
Step Action (continued)
2. Attach the Reflector:
First, pass a carriage bolt through
the top position on the reflector
and attach a flange nut. Do not
tighten the nut all the way. Slide
the carriage bolt into the slotted
tab on the top of the back
bracket. This will hold the
reflector in place while the other
four carriage bolts are installed.
Tighten the five bolts to secure
the reflector to the back bracket.
3. Mount the Antenna Back Bracket:
Position the back bracket and
reflector assembly to the mount
and line the bracket up to the
azimuth on the work order.
Tighten the collar bolts to secure
the back bracket in place.

75 cm ODU (VS1300) Assembly Job Aid
Release Date: October 2013
© 2006 - 2014 ViaSat, Inc. Page 7of 7Proprietary – For use only pursuant to
company approval and instructions
Terms of use.
Step Action (continued)
4. Attach the eTRIA:
The COAX cable run must be
completed before attaching the eTRIA
to the Boom Arm. Feed the cable
through the Boom Arm and secure
the cable to the eTRIA. Secure the
eTRIA with two bolts.