Orbit OceanTRx7 Specification sheet

COMMUNICATION WITHOUT BOUNDARIES
Orbit Communication Systems Ltd. P.O.B. 42504, Israel, Tel: +(972) 9 892 2777, Fax: +(972) 9 885 5944 www.orbit-cs.com
OceanTRx7TM
Maritime Stabilized VSAT System
Technical Note
RF Feed’s
Document: TEC32-1664-003,
September 2013

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note ii
Copyright
© 2013 Orbit Communication Systems Ltd. All rights reserved.
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TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note iii
Revision History and Control
Revision History
Rev #
Modified by
Date
Comments
.
Albert
September 24, 2013
New Release

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note iv
About this Manual
This manual is designed to guide you through the procedures required for maintaining the RF
FEED for the OceanTRx7™ Maritime Satellite Communication System.
Text Conventions
Style
Indicates
Example
Text
Normal descriptive text
Contents
Text
Words or figures that appear on the
screen or that should be typed
The name of a file or directory
System Status
<Text>
A key to be pressed
<ESC>
TEXT
The name of a hardware
component
ANTENNA
Text
The name of a GUI element
Operation Screen

The description of a procedure
To configure…
Notations
Indicates important information that should be noted.
Indicates a potential hazard.
Indicates the safest method of installation or an operation that must be adhered
to.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note v
Effective Releases
This document is effective for both ORBAND™(AL-7107) and OceanTRx7™ Maritime
Satellite Communication System.
For a description of the changes between ORBAND™ and OCEANTRX7™, refer to the
OceanTRx7™Maritime Satellite Communication System Release Notes .

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note vi
Table of Contents
1Introduction .....................................................................................................................1
1.1 Purpose....................................................................................................................1
1.2 Principles .................................................................................................................1
1.2.1 Torque Table....................................................................................................... 1
1.3 RF Feed Description ................................................................................................2
1.4 Spare Kit Contents ...................................................................................................3
1.5 Required Tools and Parts.........................................................................................5
2Preliminary Procedures ...................................................................................................6
3Replacing the RF Feed (C band).....................................................................................7
3.1 Removing the RF Feed (C band)..............................................................................7
3.2 Installing the RF Feed (C band) .............................................................................13
4Replacing the RF Feed (KU band) ................................................................................20
4.1 Removing the RF Feed (KU band) .........................................................................20
4.2 Installing the RF Feed (KU band) ...........................................................................25
5Configuration.................................................................................................................28
6Verification test..............................................................................................................29
7Appendixes ...................................................................................................................30
7.1 Appendix A- KU Sub reflector installation. ..............................................................30
7.2 Appendix B- KU Sub reflector removal. ..................................................................32

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 1 of 33
1Introduction
1.1 Purpose
The purpose of this Technical Note is to provide detailed instructions on how to replace and
configure an RF FEED and its cable.
1.2 Principles
The following principles must be followed when performing the procedures in this Technical
Note.
1.2.1 Torque Table
The following table provides the torque that should be used when tightening screws of the
listed types, as relevant.
Table 1-1: Torque Values
Screw Type
Torque
M8
25N/m
M6
10.2N/m
M5
6N/m
M4
2.5N/m
M3
1.35N/m

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 2 of 33
1.3 RF Feed Description
The Tx/Rx RF FEED is mounted on the ANTENNA, and consists of the following components:
FEED HORN –Performs impedance matching between the RF FRONT END and
the SUBREFLECTOR
RF FRONT END –Filters the signals, separates between Tx and Rx signals and
performs polarization separation
LOW NOISE BLOCK (LNB) –Down-converts and amplifies RF signals to L-Band
signals
Polarization skew servo sub-system –Consists of a polarization skew servo
driver and motor and electrically switches the polarization of the RF FEED.
Figure 1-1: RF Feed (C band)
Figure 1-2: RF Feed (KU band)
POL SKEW SERVO
MOTOR
RF RONT END
FEED HORN
LNB
Indicates: Linear
Polarity
FEED HORN
RF RONT END
LNB
POL SKEW SERVO
MOTOR

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 3 of 33
1.4 Spare Kit Contents
The following table provides a list of the parts in the RF FEED spare kit.
Table 1-2: Spare Part Kit Contents (C Cable)
KIT32-1664-016-SP
P/N
Description
Quantity
53N-50-0-4
N type to N type 90° adapter
1
E11000055
RF CABLE STR N-TYPE PLUG 2.1M 18GHz CF106P
1
TEC32-1664-003
TECH NOTE FOR OceanTRx7-300 FEEDs
1
TW-191
PKG BOX 505X380X160 AL7200-SDU
1
Table 1-3: Spare Part Kit Contents (C Feed Cir)
KIT32-1664-021-SP
P/N
Description
Quantity
K01000023
PKG BOX FOR FEED C/Ku-Band LONG/SHORT AL-7107
1
L00727002
FEED C-BAND CIRCULAR W/LNB
1
TEC32-1664-003
TECH NOTE FOR OceanTRx7-300 FEEDs
1
Table 1-4: Spare Part Kit Contents (C Feed Lin)
KIT32-1664-022-SP
P/N
Description
Quantity
K01000023
PKG BOX FOR FEED C/Ku-Band LONG/SHORT AL-7107
1
L00727003
FEED C-BAND LINEAR W/LNB
1
TEC32-1664-003
TECH NOTE FOR OceanTRx7-300 FEEDs
1

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 4 of 33
Table 1-5: Spare Part Kit Contents (KU Feed + Sub)
KIT32-1101-005-UG
P/N
Description
Quantity
32-1421-4-1
KU FEED SUB REFLECTOR ASSY (7107)
1
K01000023
PKG BOX FOR FEED C/Ku-Band LONG/SHORT AL-7107
1
K01000061
PKG BOX 590x315x290 FOR FEED SUB REFL. Ku 7107
1
L00727008
FEED Ku-Band LINEAR X-POL W/O LNB
1
TEC32-1664-003
TECH NOTE FOR OceanTRx7-300 FEEDs
1
Table 1-6: Spare Part Kit Contents (KU Feed)
KIT32-1664-041-SP
P/N
Description
Quantity
K01000023
PKG BOX FOR FEED C/Ku-Band LONG/SHORT AL-7107
1
L00727008
FEED Ku-Band LINEAR X-POL W/O LNB
1
TEC32-1664-003
TECH NOTE FOR OceanTRx7-300 FEEDs
1
Table 1-7: Spare Part Kit Contents (KU Cable)
KIT32-1664-017-SP
P/N
Description
Quantity
E11000139
RF CABLE N-Type M-RA TO N-Type M-RA 120CM
1
TEC32-1664-003
TECH NOTE FOR OceanTRx7-300 FEEDs
1
TW-191
PKG BOX 505X380X160 AL7200-SDU
1

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 5 of 33
1.5 Required Tools and Parts
The following table provides a list of tools and customer-supplied parts that are needed to
perform the procedures in this Technical Note.
Table 1-8: Required Tools and Parts
Tool/Part Name
Notes
Figure
Tie cutter
Cable ties
Allen keys: 3,4,5 and 6mm
Pliers

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 6 of 33
2Preliminary Procedures
To Perform Preliminary Procedures:
The following preliminary procedure must be performed before replacing the RF FEED:
1. This procedure must be performed by two technicians, a qualified technician and his
assistant.
2. Perform System Shut-Down of the vessel’s main power AC Voltage terminal outside the
RADOME.
3. Open the RADOME hatch.
4. Switch off the ADE POWER BOX at the ANTENNA PEDESTAL base (located inside the
RADOME).
5. Manually rotate the PEDESTAL AXES to gain convenient access to the serviced unit.
In the following procedures, be very careful when tightening and loosening the
screws with which the parts are assembled and attached to the system. Some of
these screws are delicate and can be damaged by excess force. When using an
Allen key make sure to insert the key all the way into the screw head to avoid
thread stripping.
WARNING!
The Utility Outlet is connected directly to the vessel’s AC voltage input
terminals (125 VAC / 250 VAC). Therefore, there still exists live voltage at the
Utility Outlet after disconnecting the power supply to the ADE using the Mains
Power On/Off Switch.
Only qualified and authorized personnel are allowed to carry out system
service/maintenance procedures.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 7 of 33
3Replacing the RF Feed (C band)
3.1 Removing the RF Feed (C band)
To Remove the RF Feed:
Step 1
From outside the RADOME,
turn the antennas plate to
face the hatch so you have
access to the antennas RF
FEED.
Once plate’s position is set
properly, step into the
RADOME.
Step 2
Using a 4mm Allen key,
remove the two screws
securing the FEED HORN to
its plate.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 8 of 33
Step 3
Using a 5mm Allen key,
remove the hidden screw
securing the FEED HORNS
PLATE.
Step 4
Remove the FEED HORNS
PLATE.
Step 5
Position the FEED HORN’S
ball bearing, to face up.
Reason: When pulling the
RF FEED module out, it
needs to safely pass through
gap.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 9 of 33
Step 6
From outside the RADOME,
turn the plate so, its back will
face the hatch and you have
access to the antennas RF
FEED (C BAND) back.
Once plate’s position is set
properly, step into the
RADOME.
Step 7
Cut carefully the tie wrap
binding the MOTOR and the
ENCODERS cables.
Step 8
Disconnect the three RF
FEEDS cables from its SERVO
DRIVER.
Gently unlock plugs before
pulling.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 10 of 33
Step 9
Cut carefully the tie wrap
binding the RF cables to the
RF FEED (C BAND)
surface.
Step 10
Cut carefully the three tie
wraps from the RF cables
rail.
Mind the cables direction on
the rail, you will need to put
them back the exact same
way.
Step 11
Disconnect the F-Type cable
from the LNB connector.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 11 of 33
Step 12
Manually disconnect the RF
cable from the F FEED (C
BAND).
Step 13
Carefully roll the two RF
cables.
Use a tie wrap to temporarily
secure them.
Step 14
Remove the two safety pins
from the FEED ASSEMBLY.
Remove the two SPLIT
PINS securing the safety
pins.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 12 of 33
Step 15
Using a 6mm Allen key.
remove three Allen screws
securing the RF FEED
ASSEMBLY to the DISH
ASSEMBLY.
Step 16
Using a 6mm Allen key,
remove two Allen screws
securing the RF FEED
ASSEMBLY.
Leave one screw on each
side!!
Step 17
While your assistant firmly
supports the RF FEED
ASSEMBLY, use a 6mm Allen
key, to remove the last two
Allen screws securing it.
The RF FEED ASSEMBLY is
heavy.
Its weight is: 17kgr!

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 13 of 33
Step 18
Carefully, remove the RF
FEED ASSEMBLY from the
DISH ASSEMBLY.
Mind the FEED HORN’S ball
bearing, mentioned in Step 5.
3.2 Installing the RF Feed (C Band)
To Install the RF Feed (C Band):
Step 1
Carefully mount the new RF
FEED ASSEMBLY in its place
on the DISH ASSEMBLY.
Mind the FEED HORN’S ball
bearing.

TEC32-1664-003 OceanTRx7™ RF Feed’s Technical Note Page 14 of 33
Step 2
While your assistant firmly
supports the RF FEED
ASSEMBLY, hand tight four of
its Allen screws.
Step 3
Use a 6mm Allen key to
tighten the four Allen screws.
Step 4
Use a 6mm Allen key to
tighten the last three Allen
screws securing the RF
FEED ASSEMBLY.