KNS Ku-BAND TX, Ku-BAND RX Installation And Operation Manual

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INSTALLATION AND OPERATION MANUAL

FOR VSAT VS61

Ku-BAND TX/RX ANTENNAS

SAMYUNG ENC VSAT systems are manufactured in

South of Korea.

All Rights Reserved. The information contained in this document is proprietary to SAMYUNG ENC, Inc. This document may not be reproduced or distributed in any form without the consent of SAMYUNG ENC, Inc. The information in this document is subject to change without notice.

Revision History

Revision

Date

Description

Remark

2.0

Apr 23, 2010

Initial Release (PCU Ver. 2.000 & ACU Ver. 3.400)

Hong

DVBS2

2.1

Mar 28. 2011

Change the radome drawing and add the SCS version (PCU Ver. 2.110 & ACU Ver. 3.400)

Hong

1. Introduction ........................................................................................ 1

1.1 Purpose ............................................................................................................ 1

2. Personnel and Antenna ..................................................................... 2

2.1 Radiation Limits.............................................................................................. 2

2.2 Recommendations ......................................................................................... 5

3. Installation ........................................................................................... 6

3.1 Site Selection .................................................................................................. 6

3.2 Unpacking ........................................................................................................ 8

3.3 Installing the Equipment Cables ............................................................... 10

3.4 Mounting the Antenna Unit ...................................................................... 11

3.4.1 Prepare the Support Post............................................................................ 11

3.4.2 Hoisting the Antenna ................................................................................... 12

3.4.3 Installing the Radome Assembly ............................................................... 12

3.4.4 Installing the Cables ..................................................................................... 14

3.5 Mounting the Antenna Control Unit (ACU) ........................................... 15

3.6 Installing the ACU Cables ........................................................................... 17

3.6.1 ACU Connectors ............................................................................................ 17

3.6.1.1 DB-15 Gyro Connector ............................................................................. 17

3.6.1.2 DB-9 NMEA Connector ............................................................................. 18

3.6.1.3 DB-9 Monitor & Control (M&C) Connector ......................................... 18

3.6.1.4 I/O and Gyro Strip Connector ................................................................. 19

3.6.1.5 NMEA Strip Connector ............................................................................. 22

3.6.1.6 RJ-45 Console Port .................................................................................... 22

3.6.1.7 Ethernet port .............................................................................................. 23

3.6.1.8 RX & TX Connectors (N-Type) ................................................................ 23

3.6.2 ACU Cable Connection ................................................................................. 24

3.6.3 ACU Gyro Compass Cable Connection ..................................................... 26

3.6.3.1 Synchro-Type Gyro Connection .............................................................. 26

3.6.3.2 Step-by-Step Type of Gyro Connection ................................................ 27

3.6.3.3 NMEA Type of Gyro Connection ............................................................ 28

3.6.3.4 RJ-45 Connection for Satellite Modem ................................................. 28

3.6.3.5 NMEA Port Connection for GPS Data ................................................... 30

3.6.3.6 M&C Port Connection .............................................................................. 31

3.6.3.7 Ethernet Port .............................................................................................. 31

4. Theory ................................................................................................ 32

4.1 Self-Disciplining Algorithm ........................................................................ 32

4.2 Searching and Tracking Reference ........................................................... 32

4.2.1 Searching Reference ..................................................................................... 33

4.2.1.1 DVB C/N Threshold ................................................................................... 33

4.2.1.2 DVB AGC Threshold .................................................................................. 33

4.2.1.3 RSSD Threshold.......................................................................................... 33

4.2.1.4 DVB Carrier Lock Bit ................................................................................. 33

4.2.1.5 External Lock Bit ........................................................................................ 34

4.2.1.6 External AGC Threshold............................................................................ 34

4.2.1.7 External Lock Bit & C/N Threshold ........................................................ 35

4.2.2 Tracking Reference ....................................................................................... 35

4.2.2.1 RSSD Level .................................................................................................. 35

4.2.2.2 DVB AGC Level ........................................................................................... 35

4.2.2.3 DVB C/N Ratio ........................................................................................... 35

4.3 Methods of Finding Satellite ..................................................................... 36

4.3.1 Manual Pointing ............................................................................................ 36

4.3.2 Manual Searching ......................................................................................... 36

4.3.3 Auto Searching .............................................................................................. 36

4.3.4 Reference Searching ..................................................................................... 37

4.4 Searching Standard ...................................................................................... 39

4.4.1 Auto ................................................................................................................. 39

4.4.2 DVB S1 ............................................................................................................ 39

4.4.3 DVB S2 ............................................................................................................ 39

4.4.4 DSS ................................................................................................................... 39

4.5 LNB Compatibility ........................................................................................ 39

4.6 BUC Compatibility ........................................................................................ 41

5. Initial Configuration ........................................................................ 42

5.1 Supply AC Power .......................................................................................... 42

5.1.1 ACU Operation Procedures ......................................................................... 42

5.1.2 Bluetooth Communication .......................................................................... 43

5.1.3 Main Display of the ACU ............................................................................. 44

5.2 Alignment of the Antenna and the Ship’s Bow ..................................... 45

5.2.1 Confirming the Current Heading Offset .................................................. 46

5.2.2 Determining the Heading Discrepancy .................................................... 46

5.2.3 Adjusting the Heading Offset .................................................................... 49

6. Configuration of the STR and the DVB Tuner ............................ 50

6.1 Deciding on the Searching and Tracking Reference ............................ 50

6.2 Example of Using the DVB carrier ........................................................... 52

6.3 Example of Configuration of the STR and the DVB Tuner When

Using the DVB Carrier ................................................................................. 54

6.4 Example of Using Threshold Searching .................................................. 59

7. Operation using Front Key Pad ..................................................... 62

7.1 Configuration Mode .................................................................................... 62

7.1.1 Key Mapping .................................................................................................. 62

7.1.2 Ship Location (Key ‘1’) ................................................................................. 63

7.1.3 Ship Heading (Key ‘2’) ................................................................................. 64

7.1.4 Satellite Finding Method (Key ‘3’)............................................................. 65

7.1.5 Polarity(Key ‘4’) ............................................................................................. 67

7.1.6 S&T Reference Details (Key ‘5’) ................................................................. 69

7.1.7 DVB Tuner (Key ‘6’) ...................................................................................... 71

7.1.8 Temp S&T Reference Test (Key ‘7’) ........................................................... 72

7.1.9 Yaw Axis Initialize (Key ‘8’) ......................................................................... 73

7.1.10 Searching ON/OFF (Key ‘+/-’) .................................................................... 73

7.1.11 Tracking ON/OFF (Key ‘·’)............................................................................ 74

7.1.12 STR ID (Key ‘▲’) ............................................................................................ 75

7.1.13 Checking the Signal Status (Key ‘▼’) ....................................................... 76

7.2 Installation Mode ......................................................................................... 78

7.2.1 Bluetooth Initialize ....................................................................................... 78

7.2.2 Ship Heading Offset ..................................................................................... 79

7.2.3 Searching Parameter Setting ...................................................................... 79

7.2.4 Polarity Calibration ....................................................................................... 81

7.2.5 Block Area Setting ........................................................................................ 83

7.2.6 ACU Gyro Compass Type............................................................................. 84

7.2.7 PCU Compass Mode ..................................................................................... 85

7.2.8 GPS Output Format & Baudrate ................................................................ 86

7.2.9 Tilt Sensor Offset .......................................................................................... 87

7.2.10 TX DC 48V Power ON/OFF .......................................................................... 88

7.2.11 Azimuth and Elevation Trim ....................................................................... 89

7.2.12 Diagnostic for Sensor and Driver .............................................................. 90

7.2.13 Automatic Beam Switching Protocol ........................................................ 92

7.2.14 External Lock TTL Level ............................................................................... 93

7.2.15 TCP/IP v4 Setting .......................................................................................... 94

7.2.16 Save New Parameters .................................................................................. 95

7.2.17 Reset Parameters ........................................................................................ 95

8. Operation of the Antenna .............................................................. 96

8.1 Antenna Operation Procedure .................................................................. 96

8.2 Check the Antenna’s Operational Status ................................................ 97

8.2.1 Antenna Status .............................................................................................. 97

8.2.2 Signal Strength .............................................................................................. 98

8.2.3 Antenna Status LED ...................................................................................... 98

8.2.4 M&C using Mini USB ................................................................................... 99

9. Troubleshooting ............................................................................. 100

10. Error Message ............................................................................. 107

Appendix A: Error Code Define ........................................................... a

Appendix B: Specification ..................................................................... c

Appendix C: Layout of Radome and Antenna Mounting Holes .... d

1. Introduction

1.1 Purpose

The purpose of this manual is to provide the information required to enable the end user,

customer and installer to successfully install the VS61 antenna and controller and to

program the KA-160 for operation.

It is recommended that all personnel operating the VS61 systems know which type of

system they are dealing with, read and understand the basic terms, and are fully familiar

with the operation of these systems.

Although installation may be completed by personnel preferred or designated by the

customer, it is also recommended that personnel be trained in the SAMYUNG ENC for

more suitable equipment installation procedures, and trained by SAMYUNG ENC Inc.

experts in the relevant matters.

Section 2 of this document has been provided to ensure that ALL personnel are aware of the

specific safety hazards involved in the installation and configuration of the SAMYUNG ENC

equipment (e.g. electrical, static and RF radiation hazards).

2. Personnel and Antenna

This section defines the areas near or within the radiation area of the auto acquire

antennas currently deployed. It is recommended that ALL customers operating this

equipment become familiar with the radiation patterns of these units and strictly adhere to

the precautions outlined below.

2.1 Radiation Limits

Radiation limits are defined in terms of maximum permissible exposure (MPE), a

frequency-dependent level of radiation to which a person is subjected over some duration

of time. Besides being frequency-dependent, the MPE level and duration of time based

on the Specific Absorption Rate (SAR) of the human body depends on whether the area

around the antenna is controlled or uncontrolled. The definitions of these two types of

areas are quoted from OET 65, as follows:

“The FCC guidelines incorporate two separate tiers of exposure limits that are

dependent on the situation in which the exposure takes place and/or the status of the

individuals who are subject to exposure. The decision as to which tier applies in a given

situation should be based on the application of the following definitions.

Occupational/controlled exposure limits apply to situations in which persons are

exposed as a consequence of their employment and in which those persons who are

exposed have been made fully aware of the potential for exposure and can exercise

control over their exposure. Occupational/controlled exposure limits also apply where

exposure is of a transient nature as a result of incidental passage through a location

where exposure levels may be above general population/uncontrolled limits (see below),

as long as the exposed person has been made fully aware of the potential for exposure

and can exercise control over his or her exposure by leaving the area or by some other

appropriate means. As discussed later, the occupational/controlled exposure limits also

apply to amateur radio operators and members of their immediate household.

General population/uncontrolled exposure limits apply to situations in which the

general public may be exposed or in which persons who are exposed as a consequence

of their employment may not be made fully aware of the potential for exposure or cannot

exercise control over their exposure. Therefore, members of the general public would

always be considered under this category when exposure is not employment-related, for

example, in the case of a telecommunications tower to which persons in a nearby

residential area are exposed.

For the purpose of applying these definitions, awareness of the potential for RF

exposure in a workplace or similar environment can be provided through specific training

as part of an RF safety program. Warning signs and labels can also be used to establish

such awareness as long as they provide information, in a prominent manner, on the risk of

potential exposure and instructions on the methods of minimizing such a risk of exposure.”

The following conclusions can be drawn from these tables (Figure 2-1):

Power density between the feed flange and reflector is at a hazardous level and access

to this area must be prevented while the terminal is transmitting. Under no

circumstances should any part of a person’s body be placed in this region while the

terminal is transmitting.

Based on a controlled-area power density of 5 mW/cm2 over any 6-minute period, in

some cases less than 14.6 seconds of exposure is allowable in this region. Note that, in

general, an operator would not be manually adjusting the feed during a high-rate, high-

power transmission. Also note that the power density decreases toward the reflector (as

the beam widens from the feed), so the maximum exposure time increases as the

distance from the feed increases.

Near-field levels of radiation are below the controlled-area requirement, but in some

cases are above the uncontrolled area requirement. Although the nature of

transmissions is such that radiated power levels should not reach full power at any time,

there is no absolute guarantee of reduced transmission levels; therefore, access to the

near field of the antenna must also be restricted. Since the near field is contained within

a cylinder pointed from the reflector toward the satellite, we can compute the horizontal

distance from the front of the reflector to which access must be restricted. Table 2-1

computes this distance. At distances in excess of the tabulated limits, access can be

unrestricted. Between the antenna and the tabulated limits, access should be limited to

less than 10 minutes in any 30-minute interval.

Far-field levels of radiation are below the uncontrolled-area requirement and are

therefore not a concern.

Feed Horn

Hazard Area

Warning

Area

Figure 2-1 Defined Radiation Areas

Hazard Area (Between the feed and reflector): This is the highest power density region

because the area of power radiation (the feed flange) is smallest.

Warning Area (Near field): This is the area bounded by a cylinder within the same

diameter of the reflector, and which extends from the reflector toward the satellite for, in

the case of auto acquire systems, less than 75 meters (the exact distance depends on

frequency and the diameter of the reflector).

Far field: This is the area situated at some distance from the antenna, where the

radiation density falls off with the square of distance.

2.2 Recommendations

Access to the immediate vicinity of the antenna (reflector and feed) must be restricted to

trained customers and certified contracted/service personnel. No member of personnel

should interpose any of their body parts between the feed and the reflector while the

terminal is transmitting. At full output power, this region is dangerous in cases of

exposure of more than about 14.6 seconds.

At full output power, the near-field output of the auto acquire terminals exceeds the

allowable levels for continuous exposure in an uncontrolled area. This near field is a

cylindrical region which encloses the reflector and points toward the satellite. Because

many sites accommodating the auto acquire terminals are accessible to non-operational

personnel, these sites should be considered as uncontrolled and the recommended

precautions taken accordingly.

The primary precaution should consist in restricting access to the immediate area in

front of the reflector to short durations, which, according to worst-case assumptions,

means that access should be limited to less than 10 minutes within any 30-minute interval.

If limited-duration access cannot be insured, then no access should be allowed within the

distances specified in Table 2-1 below. (Table 2-1 assumes a member of personnel

standing 6ft tall at ground level. The horizontal distance must be scaled upward

accordingly if the members of personnel are at a level higher than 6 ft.).

IA-6

Minimum Elevation City Rock Springs

Minimum Elevation (deg.) 39

Minimum distance in front of reflector to

clear 6 ft. tall person (ft.)

7.4

Minimum distance in front of reflector to

clear 1.8m tall person (m)

2.3

Table 2-1 Exclusion Region in Front of Antenna (Random)

3. Installation

3.1 Site Selection

Determine the optimum mounting location for the antenna radome assembly. It should

be installed where:

The antenna has a clear line-of-sight of as much of the sky as is practical.

Choose a

location where masts or other structures do not block the satellite signal from the dish as

the boat turns.

2. The antenna is at least 5m away from other transmitting antennae (HF, VHF and

radar) which may generate signals with the potential to interfere with the VS series antenna.

The further away the VS series antenna is from these other antenna, the less likely is it to

be affected by their operation.

3. The antenna radome assembly should be rigidly mounted on the boat. If necessary,

reinforce the mounting area to assure that it does not flex due to the boat’s motion or

vibration.

Figure 3-1 Best Location

Figure 3-2 Antenna Blockages

3.2 Unpacking

Open the carton box using pliers and remove the packaging material carefully. Lift the

unit out of the box carefully. Do not turn the box and “roll” the unit out, or turn the box

upside down to remove it. Be careful when unpacking the equipment.

Lift carton box straight up

Figure 3-3 Antenna Carton Box

Remove the jig, screw, and tie used to protect the antenna from shipping damage after

opening the radome. If power is supplied to the antenna without remov ing the fixed parts

(jig, screw, tie), the antenna may be damaged.

The antenna should be secured using the fixed parts during transportation by truck or

another vehicle. So please keep the fixed parts in the event that the antenna is to be

moved to a different place or ready to be installed after ground testing.

Figure 3-4 Antenna Fixed Parts

3.3 Installing the Equipment Cables

The VSAT VS61 comprises two major sections: The Above -Deck Equipment (ADE) is

composed solely of the antenna radome assembly , which is mounted outside. The Below -

Decks Equipment (BDE) includes the Antenna Control Unit (ACU) , satellite modem(s), and

all other items of ancillary equipment.

The ADE is connected with the BDE by two coaxial cables; the type of cable to be used

depends on the length of cable required .

NOTE

: Unused coax connections (on the connector bracket) MUST be terminated with

a 75 ohm terminator.

NOTE

: We recommend cable type according to cable length , as follows:

-within 20m: RG6

-within 50m: RG11

-within 100m: LMR400

-within 200m : LMR600

NOTE: Impedance of cable is 50ohm. Also you can select the other cable types.

However we recommend all attenuation of cable is under 20dB at 2.5GHz.

NOTE

: When install ing the cables, avoid the use of excessive force. Exercise caution

during installation of the cables to ensure that they are not severely bent ( within the

assured bend radius), kinked or twisted , and that the connectors are not damaged.

NOTE

: Make sure that the cables have been passed through watertight fittings and/or

that they will prevent water from entering the ship once their installation has been

completed. After the cables have been routed and adjusted for the correct cable length at

each end, seal the deck penetration glands and tie the cables securely in place.

3.4 Mounting the Antenna Unit

3.4.1 Prepare the Support Post

1. Prepare the antenna support post for the radome. The radome must be bolted to the

support post plate. Make sure that the mounting holes have been drilled. Please refer

to the appendix for detail drawings.

2. Make sure that the antenna support post is painted appropriately for anti -corrosion.

3. Thread the TX and RX cables from below deck up through the cable access hole on the

deck. (Check the number of RF cables required).

4. The support post should be upright. Check the post angle carefully prior to welding the

post base to the deck. If it is uneven or not level, we ld the clips to the plate or place the

foam seal in position on the mounting surface .

5. Refer to Fig 3-5 below. The thickness and size of the support plate can be changed

according to the height of the support post

Figure 3-5 Diagram of a typical Antenna Support Post (Unit mm)

3.4.2 Hoisting the Antenna

1. Drill four bolt holes and cut out cable access hole at the mounting site.(Reference

appendix)

2. Place the foam seal in position on the mounting surface with the hole centered over the

cable access cutout

3. Position the base plate in place over the mounting holes and cable access hole, and

then align the radome base plate’s “Bow” label (shown in Figure 3-6) with the ship’s bow.

Figure 3-6 “BOW” Label of Radome Base

4. Connect the data/power, and RF cables form below d ecks to the base plate with a

7/16” wrench, applying 30 pound of torque. Check label both ends of each RF cable

to match its antenna base plate connector . Do NOT use Teflon gel on the cable

fittings as it reduces signal strength at high frequencies.

3.4.3 Installing the Radome Assembly

Install a flat and spring washers and a mounting bolt (supplied with the product ) to each

mounting hole of the radome base from the underside of the mounting surface. Apply

Locktite to the threads of the mounting bolt up near the mounting surface a nd tighten each

of the 4 bolts to 24 in -lb (21 kg -cm) torque [finger tight, then about 1/4 turn tighter] with a

wrench.

DO NOT OVER -TIGHTEN

. If the mounting bolt provided is too short, you will have to

install mounting bolts of the app ropriate length . If the bolt provided is too long, the ex cess

length of threaded rod that extends above the radome base should be cut off.

Figure 3-7 Bolting the Radome/Antenna

Figure 3-8 Tighten the nuts from below

3.4.4 Installing the Cables

Drill two cable access holes at the Radome base. Make sure that the pre-installed TX/RX

cables is close to the access holes before drilling. Smooth the edge of the cable access

hole and install the Cable Grand to protect the cables.

Figure 3-9 Typical Cable Grand

Thread the TX/RX cables through the cable access holes and connect them to the

connectors of the antenna. Check the labels on both ends of each RF cable to make sure

they match the radome base plate connector. Do not use Teflon gel on the cable fittings as

it reduces signal strength at high frequencies.

Figure 3-10 Connecting the TX/RX Cables

Figure 3-11 Antenna on the Support Post

NOTE: If the antenna is to be fixed after conducting the ground testing, you have to

remove the fixed jig after installing the radome assembly. If you do not remove the fixed jig

and then supply power to the antenna, the antenna may be damaged. Please recheck

whether the antenna is fixed or free when supplying power to the antenna.

3.5 Mounting the Antenna Control Unit

(ACU)

Install the ACU in front of a standard 19” equipment rack or other suitable location. The

following are the recommended conditions for the ACU’s location.

1. The ACU should be placed in a dry location that is conven ient for the user.

2. It must not be susceptible to magnetic interference nor be situated on a level surface.

3. It should be placed so that the LCD display is visible and the buttons are accessible.

4. Allow sufficient room at the back to connect all the cables to the rear panel.

Figure 3-12 ACU Rack Mounting

ACU

3.6 Installing the ACU Cables

The KA-160 ACU is connected with various systems such as a modem, ship ’s gyro, PC ,

etc. There are several functional connections that may be made on th e various connectors.

You may not need to make all of these connections, but they are listed here to enable you

to decide which ones you do need to make during installation.

3.6.1 ACU Connectors

This section provides detailed ACU connectors, the function of connector. Most ACU

connectors are located on the rear of the ACU, as shown in Figure 3-13.

Figure 3-13 ACU Rear View

3.6.1.1 DB-15 Gyro Connector

Use this connector to connect the ship’s gyro (synchro gyro, step -by-step gyro, and

NMEA output of the gyro compas s) to the ACU. Connect the ship’s gyro to the ACU using a

DB-15 female connector . The layout of the pins of the DB-15 connector is shown in Figure

3-14 below.

Figure 3-14 Layout of the DB-15 Gyro Connector Pins

3.6.1.2 DB-9 NMEA Connector

An NMEA Connector provides GPS data to the modem

or to any other BDE that

requires GPS data

. Also, if the internal GPS of a VS61 is broken, the KA-160 ACU can

receive external GPS data via a DB-9 NMEA connector

Figure 3-15 layout of the DB-9 NMEA Connector Pins

3.6.1.3 DB-9 Monitor & Control (M&C) Connector

The M&C connector is a DB-9 which supports RS-232 data. The baudrate of the M&C

connector is fixed to 57600. The user can set and monitor using VS control software

(SCS) V1.7.2 when the PC is connected to the ACU via an M&C connector.

Figure 3-16 Layout of the DB-9 M&C Connector Pins

3.6.1.4 I/O and Gyro Strip Connector

The I/O and gyro strip connector can receive analog gyro output signals such as

Synchro and Step by Step.

Figure 3-17 Layout of the I/O & Gyro Strip Connector Pins

SW1 and SW2 of the I/O & gyro connector can control the TX mute function of the

modem by “contact clos ure” when the antenna is in the blockage or the preset block area

(refer to the operation section). Also, SW1 and SW2 supply the selection signal to coax the

switches in VSAT dual -antenna configurations.

The u ser can select ‘Contact Closure’ or ‘DC 5V Output ’ by SW1 and SW3 of the ACU

board, as shown in Figure 3 -20 below.

SW1, SW3 Mode

on ACU Board

Function of SW1, SW2in I/O & Gyro Strip Connector

A(Contact Closure)

Contact Closure

B(Power)

Power Output (SW1 : 5V, SW 2 : GND)

Table 3-1 SW1 & SW2 Function

SW1, SW3 Mode

on ACU Board

Function of SW1, SW2 in I/O & Gyro Strip Connector

Tracking

Block, Initializing, Searching

A(Contact Closure)

SW1 ~ SW2 : Closure

SW1 ~ SW2 : Open

B(Power)

SW1 : 5V, SW 2 : GND

SW1 : 0V, SW2 : GND

Table 3-2 SW1 & SW2 Function upto the Status of Antenna

Figure 3-18 A Mode: Contact Closure

Figure 3-19 B Mode: Power Output

NOTE

: Do not use the I/O & g yro strip and the DB-15 gyro connector at the same time as

this may damage the ACU.

A Mode B Mode

Figure 3-20 Mode Selection in the ACU Board using a Jumper

CAUTION

: There is a risk of e lectric shock from the gyro compass output lines. Make

sure that the gyro compass output is turned OFF when handling and connecting the wiring

to the ACU gyro connecto r.

3.6.1.5 NMEA Strip Connector

If the ship’s gyro is of the NMEA type, the installer can use an NMEA strip connector. X1,

X2, NO are not available.

Figure 3-21 Layout of the NMEA Strip Connector Pins

NOTE

: Do not use the NMEA strip and the DB-15 gyro connector at the same time as

this may damage the ACU.

3.6.1.6 RJ-45 Console Port

The RJ-45 console port provides the following: Transmits GPS information and

transmits Mute, receives TX lock and external AGC values (0~5 VDC).

Table 3-3 shows the pins of RJ-45 console port. The signal directions are referenced

either into (RX) or out from (TX) the port.

RJ-45 (DTE)

Type

RX Lock

GND

GPS

TX Mute

Ext AGC

All Other Pins

N/A

Table 3-3 Layout of the ACU RJ-45 Interface Pins

3.6.1.7 Ethernet port

The operator can access to the ACU from outer devices via the Ethernet. Then, the

operator can monitor the state of the antenna using the T-Monitor program when

connected to the ACU via the Ethernet. Also, the operator can set the antenna using the

SCS V1.7.2 program.

3.6.1.8 RX & TX Connectors (N-Type)

The RX IN connector supplies 48V DC power to the antenna and receive s RX signal s

from the antenna. Also, the KA-160 ACU communicates with the antenna using Bluetooth

via the RX IN connector.

The RX OUT connector sends RX signal s to the satellite modem.

The TX IN connector receive s TX signal s from the satellite modem when using the TX

power supply (48V, 150W) of the KA-160 ACU as BUC power.

The TX Out connector supplies 48V DC power and sends TX sign als to the BUC when

using the TX power supply (48V, 150W) of the KA-160 ACU as BUC power.

Figure 3-22 Data Flow through the RX and TX Connectors

3.6.2 ACU Cable Connection

There are two types of ACU cable connection. The installer can select the connection

types as BUC capacity. If the modem cannot support BUC power consumption, the

installer will have to use the TX power supply of the ACU or an external power supply.

In a standard configuration, the cabling between the above-deck equipment (antenna

pedestal) and the below-deck equipment (ACU) only requires TX and RX L-band coaxial

cables of a type that will be determined during the installation process (based on the

length of the cable required).

It is strongly recommended to run the cables directly from the antenna to the ACU,

thereby dispensing with the need to go through any IF patch panels to provide the best

signal level for viewing.

It is important to keep these cables the grounded (outer shield of the coax cable)

isolated from any other groundings due to the sensitivity of the CMOS components of the

PCU.

A good rule of thumb is that the receive (RX) L-band cable be directly connected to the

antenna control unit. This is because the receive (RX) L-band cable provides the DC

power to the PCU to operate that antenna. Technically speaking, the grounds from the

TX and RX IFL runs can be different, but a single piece of cable running from the ACU to

the antenna will ensure that the antenna operates properly and protect it from a possible

48 VDC, which supports the optional BUC installation.

Refer to Figures 3-23 and 3-24 below for a simplified block diagram of the different sizes

of BUC installations.

Figure 3-23 ACU Cable Connection (BUC Capacity: Modem supplies the BUC Power)

Z8Mk2

Antenna

Satellite Modem

Signal

RX TX

Signal

GPS

GPS Data

Ship s Gyro

Figure 3-24 ACU Cable Connection (BUC Capacity: ACU supplies the BUC Power)

3.6.3 ACU Gyro Compass Cable Connection

The KA-160 ACU will accept Synchro, Step-by-step, and NEMA interface data for a

Gyro compass connection.

The ACU is configured with a terminal strip and a DB-15 port. Care must be taken

when completing these connections. These wires may conduct high voltages and can

damage equipment and/or cause personal injury.

For the synchro and step-by-step gyro inputs, the installer must enter the ship’s heading

information for proper operation. Also, it is recommended that a validation test be

conducted to determine whether the proper heading updates are being received on the

ACU screen.

If the ACU heading is being updated in reverse, the ACU can be modified to change the

polarity of the incoming voltage.

3.6.3.1 Synchro-Type Gyro Connection

In the case of the synchro-type gyro, use the 5 pins (R1, R2, S1, S2, S3) of the DB-15

connector or the I/O & gyro strip connector.

Gyro DB-15 Pin No.

Type

Table 3-4 Pins Used for the Synchro-Type Gyro

NOTE: We recommend AC 11.8~115V (RMS) and 50~500Hz as the input range of the

synchro-type gyro.

3.6.3.2 Step-by-Step Type of Gyro Connection

Use the 4 pins (COM, S1, S2, S3) of the DB-15 connector or the I/O & gyro strip

connector when the ship’s gyro is of the step-by-step type.

Gyro DB-15 Pin No.

Type

COM

Table 3-5 Pins Used for the Step-by-Step Type of Gyro

NOTE: We recommend DC 25~75V as the input range of the step-by-step type of gyro.

3.6.3.3 NMEA Type of Gyro Connection

When the ship’s gyro is of the NMEA type, use the 8th(RX+) pin and the 15th(RX-) pin.

Gyro DB-15 Pin No.

Type

RX+

RX-

Table 3-6 Pins Used for the NMEA Type of Gyro

NOTE: KA-160 ACU can accept the various format of NMEA, as follow: HDT; HDG;

HDM. But NMEA signal must be matched the regular NMEA format as below.

$HEHDT,x.x,T*hh<CR><LF>

$HEHDG,x.x,x.x,a,x.x,a*hh<CR><LF>

*hh means checksum of format. If there is no this checksum, KA-160 ACU can’t accept

the gyro signal.

3.6.3.4 RJ-45 Connection for Satellite Modem

The KA-160 ACU and the satellite modem exchange some data with each other, such

as GPS data, TX mute functions, external lock state, and external AGC.

Otherwise, please refer to the following:

GPS RS-232 Output

TX Mute: Supply DC voltage to the modem,

‘0V’ means that the antenna is in normal tracking status.

‘5V’ means that the antenna is mute or is in block area.

External lock bit: The TTL level can be set as ‘0’ or ‘1’. Please refer to ‘External Lock

TTL Level’ of ‘Installation Mode’

External AGC: The voltage range must be approximately 0~5VDC (the higher the signal

strength, the better the signal). If the voltage level is above 5V, the resistor can be used

for voltage drop.

RJ-45 Pin No.

Type

ACU

Signal Direction

Modem

RX Lock

Receive

Send

GND

GPS

Send

Receive

TX Mute

Send

Receive

Ext AGC

Receive

Send

All Other Pins

N/A

Table 3-7 Data Type and Data Flow of RJ-45 Console Port

3.6.3.5 NMEA Port Connection for GPS Data

The GPS is located on the elevation plate of the antenna. The GPS antenna sends

correct GPS data to the PCU when GPS data is available. Then, the PCU sends the GPS

data to the ACU.

However, if GPS data is not available, the GPS antenna does not send GPS data to the

PCU. Also, the GPS antenna will not send GPS data to the PCU if it (GPS) is broken. In

this case, the PCU sends default GPS data value to ACU, which is saved data gathered

from GPS antenna.

The PCU sends the GPS data to the ACU via the receive (RX) L-band cable. The ACU

processes and regenerates the GPS information received from the PCU via the DB-9

NMEA (RS232) and the RJ-45 console port.

The format and baud rate of the GPS can be configured as GPRMC or GPGLL or

GPGGA, and from 1200 to 115200 bps, respectively, using the KA-160 ACU. The DB-9

NMEA and the RJ-45 ports can each have a different format and baud rate. Please refer to

the ‘7.2.8 GPS Output Format & Baudrate’ of installation mode for further details.

NMEA DB-9 Pin No.

Type

Receive Data

Send Data

GND

All other pins

Table 3-8 Pin Layout of NMEA Port

NOTE: At the first power-on for the GPS antenna, it will take about 5 minutes to

calculate your location from GPS satellite signals and configure the database.

NOTE

: If the internal GPS is broken or non -valid, the KA-160 ACU can accept the

external GPS signal. But order of priority is given to the internal GPS signal.

NOTE

: If the ship’s gyro is a GPS compass that has a heading angle and GPS d ata,

the KA-160 ACU can accept the heading angle and the GPS signal via the Gyro

connector (DB-15 pins) at the same time .

3.6.3.6 M&C Port Connection

Use the M&C port when monitoring and configuring the antenna using the PC and SCS

ver 1.7.2 This requires the installation of a serial cable or Mini USB-to-Serial cable for

communication between the two devices. Remember that the baud rate of the M&C Port is

fixed at 57600.

M&C DB-9 Pin No.

Type

Receive Data

Send Data

GND

All other pins

Table 3-9 Layout of M&C Port Pins

3.6.3.7 Ethernet Port

Both installer and operator can access to the ACU from outer devices using the Ethernet.

You must configure the host IP address, gateway, and subnet-mask to use the Ethernet.

We provide remote access software (SCS V1.7.2 & TMonitor) to the dealer. If you wish to

obtain this software, please contact us.

4. Theory

4.1 Self-Disciplining Algorithm

The greatest difference of the SAMYUNG ENC antenna system from other stabilized

antennas is its superbly designed algorithm. Pin-point accuracy can be easily obtained

with a spectrum analyzer during satellite cut-over. The key reason for this pin-point

accuracy is to guarantee the capacity for self-discipline, whereby the algorithm constantly

calculates the difference between theoretic and real-time values and disciplines itself

accordingly. This algorithm requires very complex computations, and the SAMYUNG

ENC antenna system uses the 32-bit DSP process with 150 MHz of clock when it

performs the calculation at nano-second (10-9) speeds (i.e. a thousand times faster than a

micro-second).

The motioning patterns in land-mobile and maritime applications are very different. For

example, dramatic acceleration or deceleration occurs in land-mobile applications,

whereas pitch-roll-yawl motions occur in maritime applications.

Some vendor stabilized systems may have up to two different sets of algorithms specific

to land-mobile and maritime applications. The SAMYUNG ENC stabilizer uses a single

algorithm for land-mobile and maritime applications simply because the motion sampling process of the DSP is far faster than any actual motioning condition.

4.2 Searching and Tracking Reference

VS61 antenna uses the “tuning” and “fine tuning” methods. Searching is a “tuning”

process which tries to find the satellite by covering a wide range of elevation and azimuth

motions; tracking is a “fine tuning” process which optimizes the pointing by a “Dish Scan”

mode after searching for the signal of the target satellite.

There are seven searching references, as follows: DVB C/N(Carrier to Noise)

Threshold; DVB AGC Threshold; RSSD Threshold; DVB Carrier Lock Bit; External Lock

Bit; External AGC Threshold; External Lock Bit & DVB C/N Threshold. And, there are

three tracking references: DVB Tuner AGC Level; DVB C/N Ratio; and RSSD Level. The

ACU can be configured by the operator to function in any combination of Searching and

Tracking references.

NOTE: With the threshold searching references the antenna will perform a search

pattern until the receive level measured by the RSSD or DVB tuners exceeds the pre-

configured threshold level.

4.2.1 Searching Reference

4.2.1.1 DVB C/N Threshold

The antenna searches for the satellite using the DVB tuner and a C/N threshold level.

The antenna “believes” that it points towards the target satellite whenever the DVB C/N

level is above the threshold. Hence, the threshold level value should be carefully

selected to ensure the success of the searching process.

4.2.1.2 DVB AGC Threshold

The antenna searches for the satellite using the DVB tuner and an AGC threshold level.

The DVB tuner measures a power spectrum of about 2 MHz at its tuned center

frequency and represents its strength as an AGC level (higher is stronger).

The antenna “believes” that it is pointing towards the target satellite whenever the DVB

AGC level is above the preset threshold. Hence, the threshold level value should be

carefully selected to ensure the success of the searching process.

4.2.1.3 RSSD Threshold

The antenna searches for the satellite using an RSSD threshold level.

RSSD measures a power spectrum of about 50 KHz at its tuned center frequency and

represents the strength as an RSSD level (higher is stronger). The antenna “believes”

that it points towards the target satellite whenever the RSSD level is above the threshold.

Hence, the threshold level value should be carefully selected to ensure the success of the

searching process.

4.2.1.4 DVB Carrier Lock Bit

The antenna searches for the satellite using the DVB carrier lock.

We recommend a DVB carrier lock bit as a searching reference if a DVB carrier is

available. The search speed is much faster than other searching references.

If the antenna points towards the target satellite and the DVB tuner has the correct

carrier parameters, the DVB demodulator locks on the carrier and sets the lock bit on,

which means the antenna is pointing towards the correct satellite, provided that an

identical DVB carrier is not present on an adjacent satellite (low probability).

This requires the DVB tuner to be configured with the correct carrier parameters, such

as frequency, symbol rate, and FEC.

4.2.1.5 External Lock Bit

The antenna searches for the satellite using the logical voltage status of an external

contact closure (CC). Lock bit state by the logical voltage depends on the type of modem.

In the case of an HNS modem, when the voltage level of the CC is logical high

(2.6~5VDC), the lock bit is considered to be on. Conversely, the iDirect modem’s lock bit is

on when the logical voltage is low. For the specifications of each, please refer to the

modem manual.

Like the in-built DVB tuner, some external demodulators are capable of generating a

lock signal when the carrier is locked. This information can be used for searching in the

same manner as the DVB carrier lock. However, the response time of the external

device between detecting lock and setting lock on must be as fast as the speed of the

VS61 searching process.

To keep the response times to a minimum, it is necessary to use a lower value for the

acquisition range (no higher than 30 KHz) and a PLL-based LNB (LNB stability should be

within +/-10Khz).

NOTE: A drawback occurs when antenna is in the tracking process and the lock bit is off

(logically unlocked) stemming from the loss of CC connection. And then, the antenna

returns to the searching process. This will also apply to the External AGC threshold if used

for searching.

4.2.1.6 External AGC Threshold

The antenna searches for the satellite using the AGC threshold level of an external

device like an in-built DVB tuner. Some external demodulators are capable of generating

an AGC level RX carrier strength from an analog voltage level.

This information can be used for searching in the same manner as the RSSD or DVB

AGC threshold. However, if the response time between detecting the change of the

carrier level and generating an AGC level is slow, it cannot be used. To keep the

response time to a minimum, it is necessary to use a minimum value of acquisition range

and PLL-based LNB.

NOTE: A drawback occurs when the antenna is in the tracking process and the AGC

level is below the preset threshold (logically unlocked), due to the disconnection with the

CC source. After that, the antenna restarts the searching process. This also applies to the

External Lock Bit.

4.2.1.7 External Lock Bit & C/N Threshold

The antenna searches for the satellite using the external lock bit and the C/N (AGC

value of modem) threshold level.

4.2.2 Tracking Reference

The tracking algorithm uses selected energy level variations while the antenna scanning

process is on. The tracking process is only initiated when the searching conditions have

been met.

4.2.2.1 RSSD Level

The antenna tracks the satellite by dish-scan by reading the RSSD power level of 100

KHz of the desired carrier for the target satellite. Usually, the RSSD frequency is the L-

band frequency of the target carrier, but the user can change the RSSD frequency to the

desired L-band frequency.

4.2.2.2 DVB AGC Level

The antenna tracks the satellite by dish-scan by reading the DVB AGC level changes of

the desired carrier on the target satellite. AGC level tracking may result in tracking off from

the target satellite, when there is severe interference from an adjacent satellite that has a

stronger carrier level.

4.2.2.3 DVB C/N Ratio

The antenna tracks the satellite by dish-scan by reading the DVB C/N ratio change of

the desired DVB carrier on the target satellite. The DVB tuner C/N ratio is very useful

where there is adjacent satellite interference (ASI). ASI can create a higher energy level

but will reduce the C/N ratio at the same time. The C/N ratio tracking method will not

cause the antenna to track off the target satellite.

4.3 Methods of Finding Satellite

VS61 has four satellite finding methods: manual pointing, auto searching, manual

searching, and reference searching. The user can select the proper method by satellite.

4.3.1 Manual Pointing

In this pointing method, the user controls the antenna manually by entering the desired

EL and AZ. The ACU will not perform any searching pattern but tracking is always on.

This is a handy option, and is used primarily during the initial installation and

troubleshooting process.

4.3.2 Manual Searching

The EL and AZ values are entered manually in lieu of being automatically calculated by

the ACU. The antenna first points the manually-entered EL and AZ values and then

performs the search to locate the target satellite. After the searching condition has been

met, the antenna will automatically enter a tracking mode.

4.3.3 Auto Searching

Auto-Searching is the most recommended searching method. The system runs a built-

in satellite calibration program using pre-configured information such as satellite longitude

and automated GPS (site) location data, which can be manually entered in the case of a

GPS failure.

The program calculates the EL and AZ values, and then the antenna points to that

calculated satellite position and begins the search process to find the target satellite.

After the searching condition has been met, the antenna enters into the tracking mode.

4.3.4 Reference Searching

In cases where the target carrier of the desired satellite and the carrier of the adjacent

satellite have the same parameters (frequency, symbol rate, FEC, etc.), the antenna can

search for the carrier of the adjacent satellite. This method is strongly recommended in

such cases.

To use this method, the user must select the reference satellite which is certain to

search and track the carrier. The reference searching process is as given below. Please

refer to Figures 4-1 and 4-2 below.

a. First, the antenna searches and tracks the reference satellite.

b. The antenna tracks the reference carrier for 10 seconds.

c. Then, the antenna searches for the desired carrier.

Figure 4-1 Step 1 of Reference Searching (Definition)

Figure 4-2 Step 2 of Reference Searching (Start the Reference Searching)

4.4 Searching Standard

VS61 with DVB-S2 has four searching standard methods: manual pointing, auto, DVB

S1, DVB S2, DSS. The user can select the proper method according to desired carrier.

4.4.1 Auto

In this searching standard method, PCU will analyze the carrier using DVB tuner for

tracking of carrier. But ‘Auto’ mode spends more time to search the carrier. So we

recommend the other methods like ‘DVB S1’ or ‘DVB S2’, ‘DSS’.

4.4.2 DVB S1

In this searching standard method, PCU will search the DVB S1 carrier. User must know

the proper system encryption to find desired carrier.

4.4.3 DVB S2

Select this method, if your desired carrier is using the DVB S2 encryption.

4.4.4 DSS

Select this method, if your desired carrier is using the DSS encryption.

4.5 LNB Compatibility

To validate the LNB compatibility, the operator must know the following steps.

1. RF downlink frequency in Ku-band: If the searching and tracking reference is

configured for an RSSD or DVB carrier, then the operator must know the center

frequency of the RF down-link (receive) within the range of 10.95 ~ 12.75 GHz (Ku-

band RX frequency range).

2. LNB input frequency range: The LNB specifications sheet or manufacturer’s label on

the LNB usually identifies the input frequency range.

3. This value can also be calculated from the LNB LO frequency and the output

frequency range.

4. The BW of the carrier which the modem is receiving: Carrier size given in MHz.

5. The LNB stability: The specifications of the LNB usually include its stability.

First, the installer should determine whether:

1. The RF downlink frequency is within the 2 LNB input frequency. If not, the DVB or

RSSD tuner cannot be locked on the carrier.

2. If the searching reference is RSSD (narrow band tuner) or external lock, it is

important to use an LNB with +/- 10 KHz stability; typically, a DRO LNB has +/-500

KHz of stability, which can be problematic at best if the tracking carrier is a very

narrow carrier, as in a beacon and CW carrier. Also, the external modem can’t lock

on fast enough with the installed LNB with +/- 500 KHz of stability, which is also

problematic if the external lock is used for the searching method.

NOTE: The SAMYUNG ENC antenna supports a universal LNB. The DC voltage selects

different LO frequencies to cover the entire Ku-band. However, most universal LNBs are

of the DRO type, where stability is +/- 500 KHz.

4.6 BUC Compatibility

The block up-converter (BUC) is a device comprising an up-converter and power

amplifier in a single package. It has an operating frequency range which supports

standard Ku-band frequencies from 14 ~ 14.5 GHz, while the extended Ku-band operates

in the frequency range of 13.75GHz ~ 14.5GHz.

It is important to make sure that the desired carrier frequency is within the operating

range of the BUC. Most BUCs require a 10 MHz external reference and a DC voltage

from the modem or the ACU. However, if a BUC is activated with an internal 10 MHz

reference, there is no need to provide 10 MHz reference from the modem.

Make sure that the proper DC voltages are provided to the BUC. The equipment will

be damaged if a 24 VDC BUC is provided with voltage of 48 VDC, which is generally used

in larger BUCs. Note that, currently, the ACU only provides 48 VDC down the TX IFL

cable.

5. Initial Configuration

After instal ling the radome assembly and the ACU, the VS61 antenna must be configured

with some parameters to ensure correct operation of the antenna. This section concerns

‘How to configure the antenna for the first time ’. If the initial configuration is incorrect, it may

have a detrimental effect on the antenna’s operation.

5.1 Supply AC Power

During the initial power-up sequence, the ACU provides DC current (48 VDC) via the

receive (RX) L-band cable. The ACU has a built-in short-circuit protection to ensure that

there is no short circuit between the center conductor of the L-Band RX cable and the

shield or other metallic surfaces.

5.1.1 ACU Operation Procedures

The KA-160 ACU is initialized as shown in Figure 5-1 or Figure 5-2 of the ship’s gyro

types when the ACU power is on.

Figure 5-1 ACU Starting Normal Operation (Gyro Type: NMEA, Synchro 1:1)

Figure 5-2 ACU Starting Operation Requiring Heading Angle (Gyro Type: Other)

If the ship’s gyro is of the NMEA or Sync 1:1 type, the ACU operates normally. In other

cases, the user has to input the ship’s current heading angle into the ACU, or else the

ACU will not operate.

5.1.2 Bluetooth Communication

The VS61 and the KA 160 ACU communicate with each other using Bluetooth. The

Bluetooth data flows via the RX (L-band) cable. All data are transported by Bluetooth,

except for the RX signal and DC power.

The ACU Bluetooth connects with the preset PCU Bluetooth when the ACU is initializing.

The antenna is initializing when the connection of ACU Bluetooth and PCU Bluetooth is a

success.

Bluetooth was paired in a factory, but the user must re-pair the Bluetooth if the Bluetooth

module is changed. Refer to Figure 5-3 below.

‘←’

‘ ’

‘▲’ ‘▼’

‘ ’

Figure 5-3 Bluetooth Pairing Step

NOTE: You can see the Bluetooth systems around the ACU when pairing the Bluetooth,

so you have to select the proper Bluetooth module. Our Bluetooth module’s name is ‘ESD’

and Bluetooth module’s address is on the top side of the Bluetooth module.

5.1.3 Main Display of the ACU

You can see the parameters, such as those given below in Figure 5-4, after connecting

Bluetooth.

l S: 60: Satellite ID. VS61 has 80 ID as 1~80.

l SAT0: Satellite name. Operator changes the satellite’s name; please refer to

‘Configuration Mode’ to change the satellite’s name.

l 116.0E: Longitude of the satellite.

l INIT *: State of antenna. ‘*’ means that the receive signal is not stable or that the

antenna is in the preset block area.

l AZI: Azimuth angle of the antenna’s pointing position.

l ELE: Elevation angle of the antenna’s pointing position.

l REL: Relative angle of the ship’s bow and the antenna’s pointing position.

l POL: Polarity (Skew angle)

l AGC: Energy level as tracking reference : DVB AGC or DVB C/N or RSSD

l HDG: Heading angle of the ship’s gyro

Satellite Number

Logitude of

Satellite

Azimuth Angle

of Antenna

Relative Angle of

Ship and Antenna

Signal Strength

Satellite

Name

Status of Antennal

Elevation Angle

of Antenna

Polarization

Angle

Ship’s

Heading Angle

KA-160

Figure 5-4 Main Display of ACU

5.2 Alignment of the Antenna and the

Ship’s Bow

We recommend that the bow mark of the radome base be aligned with the ship’s bow

for correct tracking of the satellite. But the ship’s mounting condition usually varies and is

limited, so the installer can mount the antenna in a direction other than the recommended

direction. If the antenna is mounted in another direction, the installer must re-set the

heading offset. Please refer to the steps outlined below to configure the heading offset.

NOTE: Heading offset is only required when the PCU compass mode is ‘NORMAL’,

‘ENHD FAILED (Enhanced Failed)’, ‘GYRO FAILED’. An internal magnetic mode does not

reuquire the heading offset. Please refer to ‘Installation Mode’ to determine the PCU

compass mode.

NOTE: Heading offset only affects the azimuth angle, and has nothing to do with

elevation.

5.2.1 Confirming the Current Heading Offset

You can see the current heading offset in the ‘Installation Mode’ as shown in Figure 4-4

below. Be sure to remember the current heading angle before moving to the next step.

Figure 5-5 Confirming the Current Heading Angle

5.2.2 Determining the Heading Discrepancy

Input the current heading offset in ‘NEW ANGLE’ to determine the heading discrepancy.

Then, the antenna will move to the heading offset position established at the factory. The

angle between the pointing direction of the antenna and the ship’s bow is the heading

discrepancy.

‘ ’

Figure 5-6 Inputting the Current Heading Angle

Open the hatch of the radome and look at the antenna inside the radome to determine

the heading discrepancy, as shown in Figure 5-7 below.

NOTE: The direction of the heading offset is as shown in Figure 5-8. If you want the

antenna to move counter-clockwise, you have to input a positive value.

CAUTION: The heading offset must be correct for quick and exact operation. We

recommend that the heading discrepancy remain within ±5 degrees. If the heading

discrepancy is as high as ±10 degrees, the antenna will not be able to search for the

satellite.

ish

Figure 5-7 Determining the Heading Discrepancy

Ship’s BOW

‘-'

‘+’

Figure 5-8 Direction of the Heading Offset

5.2.3 Adjusting the Heading Offset

Refer to Figure 5-9 below for adjustment of the heading offset.

‘ ’

‘←’ ‘ ’

‘ ’ ‘

Figure 5-9 Heading Offset adjusting Steps

NOTE: Save the changed parameters in ‘Installer Mode’ after adjusting the heading

offset. Otherwise, the antenna will remember only the preset heading offset. Refer to

‘Installer Mode’ if you would like to know how to save it.

6. Configuration of the STR and the

DVB Tuner

The STR (Searching and Tracking Reference) and the DVB tuner can be configured

manually from the ACU front key or from the remote software (SCS Ver. 1.7.2).

Regardless of whether they use the ACU front panel or remote software to configure the

STR and the DVB tuner, users should at least prepare all the information required to

configure the STR and the DVB tuner, namely: satellite orbit location and polarity,

searching and tracking reference, compatibility of LNB LO frequency, etc.

6.1 Deciding on the Searching and

Tracking Reference

With the VS61 antenna, there are multiple search and tracking options, as previously

discussed. Operators need to decide which searching and tracking option to use from

among multiple selections.

The searching reference is used to provide a “sense”, on the basis of which the antenna

determines whether it is pointing to the correct satellite or not. Please refer to 4.2

Searching & Tracking Reference for a detailed explanation of its operation.

Lock-bit searching is preferred to threshold searching because the latter cannot

guarantee the correct pointing out of the desired satellite, although its searching speed will

be faster than that of lock-bit searching.

Recommended Preference

Searching Reference

Very High

DVB Carrier Lock with Reliable DVB carrier: As the DVB tuner

provides a very fast response, this reference will result in the fastest

searching speed while guaranteeing targeting accuracy.

High

External Lock with external device: This option will find the

satellite a little slower than the DVB carrier lock because the current

searching speed is tuned to iDirect’s response time, which is not as

fast as that of the DVB tuner. However, this option, if available, will

guarantee that the antenna always targets the correct satellite as

long as an external device can provide the RX lock signal. One

drawback would be that the antenna will return to search when the

external device is disconnected or the external carrier is down, which

may be problematic during troubleshooting.

Medium

RSSD Threshold: Sometimes, the user transmits a CW carrier

with a very high C/N or the satellite may have very strong beacon

carrier with a unique frequency. (Caution: Please make sure that the

adjacent satellite is not using the same frequency for the beacon

signal!!!). These carriers can be used for the purpose of searching

and tracking sources. In such cases, the RSSD tuner is

recommended because it has a very narrow BW of about 100KHz.

However, the RSSD must be used with a PLL-LNB with a high

stability option.

DVB C/N Threshold: We recommend the DVB C/N threshold

instead of the RSSD threshold when the antenna has no RSSD tuner

or if the RSSD tuner is broken. The DVB tuner can correctly detect

the desired carrier better than the DVB AGC threshold because the

noise level increases with the energy level when there is interference

from an adjacent satellite.

Note, with the threshold option, reference searching is the

recommended Sat. Finding method because it increases the

targeting accuracy.

Medium-low

DVB AGC Threshold: The DVB tuner can only detect the energy

level, like RSSD. However, the valid detection range of BW is within

2MHz.

Low

EXT. AGC Threshold: This option is not recommended if the

response time of the external device is slow. As such, it would not

be advisable to use it with the iDirect modem due to its slow

response time.

Table 6-1 Preference of searching reference

One of the most important facts when considering the tracking reference is how well the

tracking reference can resist interference from an adjacent satellite or a local

radar/microwave, etc. For example, C/N ratio tracking is preferred to AGC level tracking.

When there is some interference, the C/N ratio is reduced, which renders the antenna

incapable of tracking towards the interfering source, while the AGC level increases, which

makes the antenna track towards the interference source.

Recommended Preference

Tracking Reference

High

DVB AGC LEVEL: The most recommended tracking reference is

DVB AGC if a DVB carrier is available. DVB AGC tracking can keep

the antenna point correct because fluctuation is lower than with DVB

C/N.

Medium

RSSD LEVEL: When there is no reliable DVB carrier available on

the satellite, RSSD is the next preferred reference. It has a very

narrow BW so that the frequency can be tuned into a “sweet spot”

when there is interference. However, LNB must have very good

stability.

Low

DVB C/N RATIO: This option is recommended when there is

severe interference from an adjacent satellite (ASI) or a local

radar/microwave, etc.

Table 6-2 Preference of tracking reference

6.2 Example of Using the DVB carrier

The DVB carrier is the most recommended method of searching and tracking if the

desired DVB carrier is available. The polarity, beam type, and LNB operating frequency

range of the DVB carrier must be the same as those which the on-board satellite’s modem

is using. Most public DVB carriers can be found in www.Lyngsat.com.

The benefit of using a DVB carrier is that it fully utilizes a state-of-the-art SAMYUNG

ENC built-in DVB tuner, so the probability of tracking the wrong satellite is very low. Also,

typically, the uptime of a DVB carrier is very high. When maintenance is being carried out

on the carrier which the satellite’s modem is using, antenna tracking is not interrupted.

NOTE: If possible, it is recommended to pre-configure the necessary parameters to use

an external lock even though the DVB lock has already been selected as the searching

reference.

1. How to choose the DVB carrier using www.Lyngsat.com:

2. Click the desired region (Asia, Europe, Atlantic, America).

3. Select the desired satellite.

4. Write down the four parameters (Frequency, Polarity, Symbol rate, FEC) from

the selected DVB carrier.

TP. Freq

RF RX Frequency(MHz)

H/V

Polarity of Carrier (Horizontal/Vertical)

System

Encryption

System encryption type : DVBS1, DVBS2, DSS

Symbol Rate - the symbol rate unit used by Lyngsat is Kilo-

symbols per second (Ksps).

NOTE: The NID is not recommended for use with a public DVB carrier in cases where

the NID is not inserted frequently or fast enough to be used in the searching process.

6.3 Example of Configuration of the STR

and the DVB Tuner When Using the DVB

Carrier

This section provides an example of configuration in steps.

Desired satellite parameters (DVB)

Satellite: Astra 3A

Satellite Longitude: 23.5°E

Frequency TP: 12,605MHz

Polarity: Horizontal (Down link)

System encryption: DVB-S2

Symbol Rate: 27500KHz

NOTE: FEC rate isn’t required in DVBS2 tuner. Tuner automatically detects the FEC

rate.

Please refer to Figures 6-1 and 6-2 for configuration of the satellite parameters.

CONFI G: S&T REF DETAI LS( 61: SAT0) DOWNLOADI NG I FORMATI ON. . .

CONFI G: S&T REF DETAI LS( 61: SAT0) SATELLI TE LOGI TUDE: E 023. 5

CONFI G: S&T REF DETAI LS( 61: SAT0) SATELLI TE RX POLARI TY: HORI ZONTAL

CONFI G: S&T REF DETAI LS( 61: SAT0) SATELLI TE TX- RX POL: CROSS-POL

CONFI G: S&T REF DETAI LS( 61: SAT0) SEARCHI NG REFERENCE : DVB CARRI ER LOCK

CONFI G: S&T REF DETAI LS( 61: SAT0) TRACKI NG REFERNCE: DVB AGC LEVEL

CONFI G: S&T REF DETAI LS( 61: SAT0) RSSD L- BAND FREQ: 1305000KHz

CONFI G: S&T REF DETAI LS( 61: SAT0) SERCHI NG THRSHLD: 3800

CONFI G: S&T REF DETAI LS( 61: SAT0) SKEW OFFSET: 0000DEG

CONFI G: S&T REF DETAI LS( 61: SAT0) UPLOAD TO RUNNI NG CONFI G: YES?

CONFI G: S&T REF DETAI LS( 61: SAT0) UPLOADI NG. . .

CONFI G: S&T REF DETAI LS( 61: SAT0) SAVE TO FLASH: YES?

CONFI G: S&T REF DETAI LS( 61: SAT0) SAVI NG. . .

CONFI G: S&T REF DETAI LS( 61: SAT0) ENTER TO CONFI G

Pr ess

‘ENT’

I nput Longi t ude

Pr ess ‘ENT’

Sel ect Pol ar i t y

Pr ess ‘ENT’

Sel ect TX- RX POL

Pr ess ‘ENT’

Sel ect SCH Ref er ence

Pr ess ‘ENT’

Sel ect TRCK Ref er ence

Pr ess ‘ENT’

I nput RSSD Fr equency

Pr ess ‘ENT’

I nput Thr eshol d Val ue

( Onl y SCH Ref er ence i s

Thr eshol d)

Pr ess ‘ENT’

I nput Skew Of f set

( Onl y Sat el l i t e has

Skew Of f set )

Pr ess ‘ENT’

Sel ect Upl oad or No

Pr ess ‘ENT’

Sel ect Save or No

Pr ess ‘ENT’

Pr ess ‘5’

Key

Figure 6-1 Configuration of S&T Reference

Figure 6-2 Configuration of DVB Tuner

NOTE: Almost all satellites are what is known as ‘cross-pol’, wherein RX polarity and TX

polarity are crossed. If the RX polarity is ‘Horizontal’, then the TX polarity is ‘Vertical’.

However, some satellites have what is known as co-pol. We supply co-pol kits for co-pol

satellites. Please contact us for further details.

Figure 6-3 Co-pol Kits (Optional)

NOTE: If you examine the specifications of the LNB, you can find the operating range.

The operating frequency of the KU-down link is 10.95 ~ 12.75GHz = 1.8GHz of BW. But

the standard LNB covers 500 MHz of BW, while a wide-band LNB covers 750 MHz.

The output of 750 MHz LNB is 950~1700 MHz, but the extra 250 MHz may not be

useful if the satellite’s modem supports 950~1450 MHz.

No matter how good an LNB is, it will not be able to cover 1.8 GHz while meeting the

necessary RF performance. Thus, it is important to use an LNB that covers your operating

frequency.

LNBs can be categorized by the fixed frequency of their local oscillator (LO).

LO ( GHz)

KU-Band In ( GHz)

L-band Out ( MHz)

10.00

10.95 ~ 11.70

950 ~ 1700

10.25

11.20 ~ 11.70

950 ~ 1450

10.75

11.70 ~ 12.20

950 ~ 1450

11.30

12.25 ~ 12.75

950 ~ 1450

Table 6-3 Operating Range by LNBs’ Local Frequencies

NOTE: We provide a universal LNB that can cover the entire Ku-Band of

10.95~12.75GHz. This LNB has four local oscillators. The operator can select the desired

oscillator according to the LNB input voltage and 22KHz tone.

EXAMPLE: If your desired RF frequency is 12.565GHz, you have to select the 11.3GHz

as LNB local frequency. For that, you must set the 11300MHz to ‘LNB Low Local

Frequency’, and then select [18V Low]. Please refer to the ‘DVB Tuner Configuration’ step.

LO( GHz)

LNB Voltage

22KHz Tone

KU-Band In (GHz)

L-band Out (MHz)

10.00

13VDC

OFF

10.95 ~ 11.70

950 ~ 1700

10.75

13VDC

11.70 ~ 12.25

950 ~ 1500

11.30

18VDC

OFF

12.25 ~ 12.75

950 ~ 1450

9.75

18VDC

10.70 ~ 11.70

950 ~ 1950

Table 6-4 Specifications of Universal LNB (Type R)

LO( GHz)

LNB Voltage

22KHz Tone

KU-Band In (GHz)

L-band Out (MHz)

9.75

13VDC

OFF

10.70 ~ 10.95

950 ~ 1150

10.00

13VDC

10.95 ~ 11.70

950 ~ 1700

10.75

18VDC

OFF

11.70 ~ 12.25

950 ~ 1500

11.30

18VDC

12.25 ~ 12.75

950 ~ 1450

Table 6-5 Specifications of Universal LNB (Type N)

6.4 Example of Using Threshold Searching

If your desired carrier is not a DVB, you can use threshold searching using your modem.

Please refer to Figurse 6-4 and 6-5.

Desired satellite parameters

Satellite: Galaxy 18

Satellite Longitude: 123°W

Frequency TP: 12,140MHz

Polarity: Horizontal (Down link)

System encryption: NTSC

Symbol Rate: ?

NOTE: If your desired desire satellite does not support the DVB, you will not be able to

track the satellite using the DVB carrier lock. In this case, you can try threshold searching

methods. Best searching reference is the ‘External lock & C/N threshold’ using modem

when desired carrier isn’t a DVB.

NOTE: C/N of ‘External lock & C/N threshold’ is the AGC of modem. When define the

threshold value, operator has to check the value on LCD of ACU and then decide higher

value than noise level as threshold.

CONFI G: S&T REF DETAI LS( 61: SAT0) DOWNLOADI NG I FORMATI ON. . .

CONFI G: S&T REF DETAI LS( 61: SAT0) SATELLI TE LOGI TUDE: W 123. 0

CONFI G: S&T REF DETAI LS( 61: SAT0) SATELLI TE RX POLARI TY: HORI ZONTAL

CONFI G: S&T REF DETAI LS( 61: SAT0) SATELLI TE TX- RX POL: CROSS-POL

CONFI G: S&T REF DETAI LS( 61: SAT0) SEARCHI NG REFERENCE : EXT LK & CN THD

CONFI G: S&T REF DETAI LS( 61: SAT0) TRACKI NG REFERNCE: DVB CAGC LEVEL

CONFI G: S&T REF DETAI LS( 61: SAT0) RSSD L- BAND FREQ: 1390000KHz

CONFI G: S&T REF DETAI LS( 61: SAT0) SERCHI NG THRSHLD: 0800

CONFI G: S&T REF DETAI LS( 61: SAT0) SKEW OFFSET: 0000DEG

CONFI G: S&T REF DETAI LS( 61: SAT0) UPLOAD TO RUNNI NG CONFI G: YES?

CONFI G: S&T REF DETAI LS( 61: SAT0) UPLOADI NG. . .

CONFI G: S&T REF DETAI LS( 61: SAT0) SAVE TO FLASH: YES?

CONFI G: S&T REF DETAI LS( 61: SAT0) SAVI NG. . .

CONFI G: S&T REF DETAI LS( 61: SAT0) ENTER TO CONFI G

Pr ess

‘ENT’

I nput Longi t ude

Pr ess ‘ENT’

Sel ect Pol ar i t y

Pr ess ‘ENT’

Sel ect TX- RX POL

Pr ess ‘ENT’

Sel ect SCH Ref er ence

Pr ess ‘ENT’

Sel ect TRCK Ref er ence

Pr ess ‘ENT’

I nput RSSD Fr equency

Pr ess ‘ENT’

I nput Thr eshol d Val ue

Pr ess ‘ENT’

I nput Skew Of f set

( Onl y Sat el l i t e has

Skew Of f set )

Pr ess ‘ENT’

Sel ect Upl oad or No

Pr ess ‘ENT’

Sel ect Save or No

Pr ess ‘ENT’

Pr ess ‘5’

Key

Figure 6-4 Configuration of S&T Reference (Threshold Searching)

CONFI G: DVB TUNER( 61: SAT0) ENTER TO CONFI G

CONFI G: DVB TUNER( 61: SAT0) DOWNLOADI NG I NFORMATI ON. . .

CONFI G: DVB TUNER( 61: SAT0) LNB LOW LO FREQ: 10750MHz

CONFI G: DVB TUNER( 61: SAT0) LNB HI GH LO FREQ: 11300MHz

CONFI G: DVB TUNER( 61: SAT0) RX RF FREQ: 12140000KHz

CONFI G: DVB TUNER( 61: SAT0) SYMBOL RATE: 00000KHz

CONFI G: DVB TUNER( 61: SAT0) LNB I NFO: [ 18V LOW] (LO FREQ; 10750MHz)

CONFI G: DVB TUNER( 61: SAT0) SI GNAL SEARCH REF: DVBS2 SCH

CONFI G: DVB TUNER( 61: SAT0) UPLOADI NG TO RUNNI NG CONFI G: YES?

CONFI G: DVB TUNER( 61: SAT0) UPLOADI NG. . .

CONFI G: DVB TUNER( 61: SAT0) SAVE TO FLASH: YES?

CONFI G: DVB TUNER( 61: SAT0) SAVI NG. . .

‘ ’

Figure 6-5 Configuration of DVB Tuner (Threshold Searching)

7. Operation using Front Key Pad

There are two modes in the ACU configuration: Configuration Mode and Install Mode.

In the Configuration Mode, the operator configures the parameters required for standard

operation. In the Installation mode, the installer configures the parameters required for

installation of the antenna and/or repair work.

Figure 7-1 ACU Front Keypad

7.1 Configuration Mode

This section will describe the configuration of the ACU.

7.1.1 Key Mapping

The following table provides a quick reference source on Key Mapping of the ACU.

Key (Main Status)

Action

CONFIG: SHIP LOCATION

CONFIG: SHIP HEADING

CONFIG: SAT. FINDING METHOD

CONFIG: POLARITY

CONFIG: S&T REF DETAILS

CONFIG: DVB TUNER

CONFIG: TEMP S&T REF TEST

CONFIG: YAW AXIS INITIALIZE

+/-

CONFIG: SEARCHING ON/OFF

CONFIG: TRACKING ON/OFF

▲

CONFIG: STR ID

▼

STATUS of all searching and tracking references

Holding ‘ß’ 3 sec

Go to INSTALLATION MODE

Holding ‘C ‘3 sec

Monitor and Control using PC

Table 7-1 Key Mapping (Quick Reference)

7.1.2 Ship Location (Key ‘1’)

Press key ‘1’ to access ‘SHIP LOCATION’. The KA-160 ACU displays the longitude

(LON) and latitude (LAT) data of the antenna when the GPS is operating normally. Also, if

the internal GPS is broken and an external GPS is not being used, the operator can enter

the GPS data using the ACU. Refer to Figures 7-2 and 7-3 to configure and check the

GPS.

‘ ’

Figure 7-2 Check GPS Data and Status

Figure 7-3 Manual Inputting of GPS Data

NOTE: In the event of a GPS failure, the user must enter the correct GPS value for the

antenna to calculate the EL and AZ of the target satellite; the same applies if the ship has

traveled a significant distance from the last manually entered location. Since antenna

searches for satellites based on its current position, correct LAT & LONG data is needed

to be entered.

NOTE: Press the ‘+/-’ key to change ‘North’ or ‘South’ when setting the latitude, and

press the ‘+/-’ key to change ‘East’ or ‘West’ when setting the longitude.

7.1.3 Ship Heading (Key ‘2’)

Press key ‘2’ to access ‘SHIP HEADING’. The correct ship heading information must be

entered whenever the ACU is initialized (power reset), as with most types of Gyro

compasses. This configuration is not required for NMEA or Synchro 1:1 Gyro inputs.

Use this configuration when the heading angle displayed in the ACU is different from the

ship’s heading angle.

‘ ’

Cur r ent

Headi ng Angl e

Desi r ed New

Headi ng Angl e

‘ ’

Figure 7-4 Configuration of Ship Heading

7.1.4 Satellite Finding Method (Key ‘3’)

Press key ‘3’ to access ‘SATELLITE FINDING METHOD’. Please refer to the ‘Theory’

section.

Figure 7-5 Configuration of Satellite Finding

Ø Auto Searching

If you select auto searching, you will see Figure 7-6 shown below.

Figure 7-6 Auto Searching

Ø Manual Searching

If you select auto searching, you will have to input the desired position (elevation and

azimuth angles). Then, the antenna will start to search for the satellite from the desired

position.

Figure 7-7 Manual Searching

NOTE: The antenna will start searching from the desired position after inputting the

elevation and azimuth values. (You must press ‘ENT’ after inputting the elevation and

azimuth values, otherwise the antenna will be pointing [holding]).

Ø Manual Pointing

If you select manual pointing, you will have to input the desired position (elevation and

azimuth angles). Then, the antenna will point to the desired position.

Figure 7-8 Manual Pointing

NOTE: The antenna will start tracking towards the desired position after inputting the

elevation and azimuth values. (You must press ‘ENT’ after inputting the elevation and

azimuth values, otherwise the antenna will be pointing [holding]).

Ø Reference Searching

If you use reference searching, you will have to select the reference satellite. You can

check the reference satellite when selecting reference searching. Please refer to the

‘Theory’ section for a more detailed description.

Figure 7-9 Reference Searching

C:L/U

DVB Tuner lock status L = Locked

U = Unlocked

E:L/U

External device lock status L = Locked U = Unlocked

A: XXXX

DVB AGC Level

C:XXXX

DVB C/N Level

R:XXXX

RSSD Level

E:XXXX

External device AGC Level

7.1.5 Polarity(Key ‘4’)

The operator can move the angle of skew using one of 3 methods, namely ‘AUTO’,

‘MANUAL’, and ‘JOG’.

l AUTO Mode: The PCU calculates the skew angle based on the polarity of the

satellite and antenna’s current position. The skew moves to the calculated angle

when selecting the ‘AUTO’ mode. The skew angle ranges from 95°to -95°.

l MANUAL Mode: The operator can change the skew angle by inputting the

desired angle. The skew angle ranges from130°to -130°.

‘ ’

‘▲’ ’▼’

‘ ’

Figure 7-10 Skew in Manual Mode

l JOG Mode: The operator can change the skew angle using the ‘▲’ or ‘▼’

keys. The skew angle increases when the ‘▲’key is pressed, and decreases

when the ‘▼’ key is pressed. If you want to stop the skew, pull out the key.

Figure 7-11 Skew in Jog Mode

7.1.6 S&T Reference Details (Key ‘5’)

The operator can input the details of the searching and tracking references.

CONFI G: S&T REF DETAI LS( 61: KOR3) DOWNLOADI NG I FORMATI ON. . .

CONFI G: S&T REF DETAI LS( 61: KOR3) SATELLI TE LOGI TUDE: E 116. 0

CONFI G: S&T REF DETAI LS( 61: KOR3) SATELLI TE RX POLARI TY: HORI ZONTAL

CONFI G: S&T REF DETAI LS( 61: KOR3) SATELLI TE TX- RX POL: CROSS-POL

CONFI G: S&T REF DETAI LS( 61: KOR3) SEARCHI NG REFERENCE : DVB CARRI ER LOCK

CONFI G: S&T REF DETAI LS( 61: KOR3) TRACKI NG REFERNCE: DVB AGC LEVEL

CONFI G: S&T REF DETAI LS( 61: KOR3) RSSD L- BAND FREQ: 0997000KHz

CONFI G: S&T REF DETAI LS( 61: KOR3) SERCHI NG THRSHLD: 3800

CONFI G: S&T REF DETAI LS( 61: KOR3) SKEW OFFSET: 0000DEG

CONFI G: S&T REF DETAI LS( 61: KOR3) UPLOAD TO RUNNI NG CONFI G: YES?

CONFI G: S&T REF DETAI LS( 61: KOR3) UPLOADI NG. . .

CONFI G: S&T REF DETAI LS( 61: KOR3) SAVE TO FLASH: YES?

CONFI G: S&T REF DETAI LS( 61: KOR3) SAVI NG. . .

CONFI G: S&T REF DETAI LS( 61: KOR3) ENTER TO CONFI G

Pr ess

‘ENT’

I nput Longi t ude

Pr ess ‘ENT’

Sel ect Pol ar i t y

Pr ess ‘ENT’

Sel ect TX- RX POL

Pr ess ‘ENT’

Sel ect SCH Ref er ence

Pr ess ‘ENT’

Sel ect TRCK Ref er ence

Pr ess ‘ENT’

I nput RSSD Fr equency

Pr ess ‘ENT’

I nput Thr eshol d Val ue

( Onl y SCH Ref er ence i s

C/ N THRHLD)

Pr ess ‘ENT’

I nput Skew Of f set

( Onl y Sat el l i t e has

Skew Of f set )

Pr ess ‘ENT’

Sel ect Upl oad or No

Pr ess ‘ENT’

Sel ect Save or No

Pr ess ‘ENT’

Pr ess ‘5’

Key

Figure 7-12 S&T Reference Details (Steps)

NOTE: Fortunately, most satellites use standard polarity. However, some satellites use a

non-std way of linear polarity. If a satellite uses standard polarity (most US and EU

satellites), it is not necessary for the operator to input the skew offset. However, in the

case of non-standard polarity satellites, the operator must input the skew offset in the

configuration given under ‘S&T Reference Details’.

Go to ‘Polarity’ (Key ‘4’) and search for the polarity angle where the energy level (DVB

C/N, AVB AGC, RSSD) is at its highest, using either the MANUAL or JOG functions. Then,

changed skew angle value will be ‘default’ in the selections of the skew angle.

Figure 7-13 Check the Energy Level in Jog Manual and Jog Mode

7.1.7 DVB Tuner (Key ‘6’)

The operator can input the parameters of the satellite using the configuration of the

‘DVB Tuner’. Please refer to Figure 7-12 below.

CONFI G: DVB TUNER( 61: KOR3) ENTER TO CONFI G

CONFI G: DVB TUNER( 61: KOR3) DOWNLOADI NG I NFORMATI ON. . .

CONFI G: DVB TUNER( 61: KOR3) LNB LOW LO FREQ: 11750MHz

CONFI G: DVB TUNER( 61: KOR3) LNB HI GH LO FREQ: 11750MHz

CONFI G: DVB TUNER( 61: KOR3) RX RF FREQ: 11747000KHz

CONFI G: DVB TUNER( 61: KOR3) SYMBOL RATE: 21300KHz

CONFI G: DVB TUNER( 61: KOR3) LNB I NFO: [ 18V HI GH] ( LO FREQ; 10750MHz)

CONFI G: DVB TUNER( 61: SAT0) SI GNAL SEARCH REF: DVBS2 SCH

CONFI G: DVB TUNER( 61: KOR3) UPLOADI NG TO RUNNI NG CONFI G: YES?

CONFI G: DVB TUNER( 61: KOR3) UPLOADI NG. . .

CONFI G: DVB TUNER( 61: KOR3) SAVE TO FLASH: YES?

CONFI G: DVB TUNER( 61: KOR3) SAVI NG. . .

‘ ’

Figure 7-14 Configuration of DVB Tuner by Steps

7.1.8 Temp S&T Reference Test (Key ‘7’)

With this configuration, the operator can evaluate all of the S&T references and choose

the best one. The operator can see simultaneous readings of all the S&T references, and

select any one of the pre-configured S & T references as an active reference (so that it

can be used in the searching and tracking process), and then enters its AGC threshold

level.

‘ ’

Figure 7-15 Configuration Temp S&T Reference

C:L/U

DVB Tuner lock status

L = Locked U = Unlocked

E:L/U

External device lock status L = Locked U = Unlocked

A: XXXX

DVB AGC Level

C:XXXX

DVB C/N Level

R:XXXX

RSSD Level

E:XXXX

External device AGC Level

7.1.9 Yaw Axis Initialize (Key ‘8’)

This configuration is required when the gyro is in need of repair.

‘ ’

Figure 7-16 Yaw Axis Initialize Configuration

7.1.10 Searching ON/OFF (Key ‘+/-’)

Searching OFF is a special function to prevent the antenna from going into the

searching process when a searching problem occurs, such as a tracking failure.

The Searching OFF function is very useful when there are frequent blockages of short

duration. If you select Searching ON, any blockage (up to searching delay) causes the

antenna to go searching wherever the searching pattern has been initiated.

Figure 7-17 Configuration of Searching ON/OFF

7.1.11 Tracking ON/OFF (Key ‘·’)

Under certain test environments, the operator can turn off the tracking process. When

the tracking is turned off, the antenna ceases its conical scanning and points towards the

current position.

‘•’

‘ ’

Figure 7-18 Configuration of Tracking ON/OFF

7.1.12 STR ID (Key ‘▲’)

With this configuration, the operator can select a different S&T Ref. ID. When selecting

an S&T reference, the antenna starts the searching and tracking processes as per the

parameters based on the selected STR. If the new STR uses a different satellite, then

the antenna will search for a different satellite.

For example, let’s assume that there are two fully-configured records of the STR, i.e.

01:SMX5 (Satmex-5) and 02:NSS7 (NSS7). If the antenna is using STR 01:SMX5 and

the operator selects 02:IA07, then the antenna will search and track the NSS-7 satellite as

per the details of STR record 02:NSS7. To use this option effectively, it is recommended

that the operator configures multiple records of the Searching and Tracking Reference

(STR) in advance for multiple satellites.

Figure 7-19 Configuration of STR ID

NOTE: The operator can change the satellite’s name using the ACU key pad. Refer to Figure 7-18 below if you wish to change the satellite’s name.

Figure 7-20 Changing the Satellite’s Name

7.1.13 Checking the Signal Status (Key ‘▼’)

If this function is entered, the operator can check the status of the signal, the NID of the

signal, and the automatic beam switching mode.

a. Status of signal

Figure 7-21 Status of Signal

b. Network ID

In the case of the correct DVB carrier, the PCU analyses the NID (Network ID) from the

target satellite’s signal. The ACU displays the Network ID (NID) on an LCD.

Figure 7-22 NID

c. Automatic beam switching mode

The operator can check the automatic beam switching mode, as shown in Figure 7-23

below. If the automatic beam switching mode is off, the ACU displays the recent value.

Figure 7-23 Automatic Beam Switching

7.2 Installation Mode

If you push and hold the “ß” key in the main display for 2~3 seconds, you can enter the

‘Installation Mode’. The ‘Installation Mode’ has 17 sub menus. Use this mode when

replacing any board or hardware, or when changing the gyro type, etc.

NOTE: You must save the changed parameters when you change any parameter to the

desired parameter. If the new parameters are not saved, they will be lost the next time the

ACU is power cycled, and the previous parameters will be restored.

7.2.1 Bluetooth Initialize

The antenna and the ACU communicate with each other using Bluetooth via an RX

cable. When the Bluetooth module is replaced, it is necessary to pair the Bluetooth.

Please refer to the ‘Bluetooth Communication’ section of ‘Initial Configuration’.

Figure 7-24 Pairing the Bluetooth

7.2.2 Ship Heading Offset

The antenna’s heading must be aligned with the ship’s heading to ensure accuracy of

searching and tracking. This only concerns the antenna pointing position and the ship’s

bow when configuring the heading offset. Please refer to ‘5.2.2 Determine Heading

Discrepancy’ to find out how to calculate the heading discrepancy.

Figure 7-25 Configuration of Ship Heading Offset by Steps

7.2.3 Searching Parameter Setting

The searching parameter is a range which the antenna searches for the satellite from

the position derived from PCU. If it is too narrow, the antenna will not be able to search for

the antenna. Also, if it is too wide, the antenna searching time will be slower than inputting

the proper parameter. Please be deliberate when changing the searching range.

l Azi(Azimuth) Range : Searching range (degree) of azimuth axis

l Ele(Elevation) Range : Searching range (degree) of elevation

l Step : Increase range in former step

l SCH (Searching) Delay : Time-out for automatic initiation of a search when the

signal level drops below the threshold level or the antenna loses of the lock bit.

Figure 7-26 Searching Range

‘ ’

Figure 7-27 Configuration of Searching Parameter

7.2.4 Polarity Calibration

This setting is required when the skew block or the PCU is replaced. During normal

operation, any change in this parameter other than a factory set value may cause faulty

operation of the automatic polarity adjustment

The skew block must be zeroed by setting this configuration, when replacing the skew

block or the PCU. The skew zero position is as shown in Figure 7-28 below. The top side

of the skew plate runs parallel to the cross bar. The skew block is moved by ‘Jog’ or

‘Manual’ mode. The jog and manual modes of the installation mode are the same as the

jog and manual modes of polarity configuration. Refer to ‘Polarity (Key ‘4’)’.

Figure 7-28 Skew Zero Position

‘ ’

‘ ’ ‘ ’

‘ ’

Figure 7-29 Skew Zero Setting

Use ‘Scale factor setting’ to optimize the skew angle when it is at +90 or -90 degrees.

‘ ’

‘

’ ‘ ’ ‘ ’

‘ ’

Figure 7-30 Skew Scale Factor Setting

7.2.5 Block Area Setting

The signal from a satellite to the antenna is a line-of-sight (LOS) signal which enables

ship structures to block the signal in a certain azimuth angle. When the antenna is

transmitting during this structural blockage, it may cause harmful interference or radiation.

During the initial installation, the installer can store up to three blocking areas in the ACU

flash memory, from which the ACU can determine whether the antenna is within a block

area or not, and send a contact-closure (CC) signal via the SW1 and SW2 positions. It is

normally closed (NC) for non-blocking areas. This CC can be used by the operator to

control an RF inhibit function (transmission on or off).

NOTE: The azimuth angle of the block area is calculated relatively to the ship heading.

NOTE: The operator can set the 3 elevation zones and 3 azimuth zones to the block

area.

Figure 7-31 Block Area Setting

7.2.6 ACU Gyro Compass Type

There are multiple types of Gyro compasses, each of which requires a unique selection.

The SAMYUNG ENC antenna supports the following Gyro type.

NMEA

0183

SYNC

360:1

SYNC

180:1

SYNC

90:1

SYNC

36:1

SYNC

1:1

STEP

360:1

STEP

180:1

STEP

90:1

NOTE: SYNC and STEP gyros require a direction setting which provides two choices:

Normal and Reverse.

NOTE: The SYNC gyro also requires a frequency setting which provides two choices:

50/60Hz and 400/500Hz.

When the Direction setting = NORMAL, a change in voltage is proportional to a change

of heading within a defined ratio (e.g. 1:1, 360:1, etc.). When the Direction setting =

REVERSE, a change of voltage is inversely proportional to a change of heading in a

defined ratio (e.g. 1:1, 360:1, etc.).

…

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Figure 7-32 Configuration of Gyro Compass Type

7.2.7 PCU Compass Mode

There are four modes, as outlined below. The operator can select the PCU compass

type according to the state of the ship’s gyro. The antenna will start initializing after

selection of the PCU compass mode.

a. NORMAL (GYRO COMPASS):

Select the ‘NORMAL’ mode when using the ship’s

gyro. The

ACU provides GYRO info to the PCU, which the PCU uses for its

computation. For

Gyro cable connection , refer to ‘ 3.6.3 ACU Gyro Compass Cable

Connection’.

b. FAILED (Failed GYRO COMPASS):

In the event that a gyro compass is not available,

the user must select the ‘FAILED’ mode and must manually input the heading value.

(Refer to ‘7.1.3 Ship Heading ’ for inputting the heading value.) The PCU uses the

heading angle when the PCU is receiving the STR ID command from the ACU or

when the antenna is search ing for the satellite after initializing of the antenna.

c. ENHD FAILED (Enhanced Gyro Failure Mode): The ‘ENHD FAILED’ mode is an

enhanced version of the ‘FAILED’ mode. In the case of the ‘ENHD FAILED’ mode,

the PCU uses the heading angle when the antenna starts another search for the

satellite after search failure.

NOTE: The VS61 points to the calculated position for about 30 seconds when the

antenna’s satellite search fails, whereupon the antenna starts another search for the

satellite.

d. INT. COMPASS (Internal Magnetic Mode): The VS61 has an internal magnetic

sensor in a sensor cage. The PCU uses the azimuth angle obtained from the

internal magnetic sensor for its computation.

NOTE: “INT. COMPASS’ mode is useful when testing the antenna on the ground without

an external gyro signal. However, this mode is not recommended in cases where any of

the ship’s material consists of a magnetic metal, as this can affect the magnetic field of

the internal magnetic sensor, and the azimuth angle of the antenna will consequently

differ from the real azimuth angle. If there are no non-magnetic metals among the

materials of your ship, you can use the ‘INT. COMPASS’ mode. But internal magnetic

value is more incorrect than gyro compass value, so we recommend that the antenna is

used with a gyro compass.

7.2.8 GPS Output Format & Baudrate

The ACU provides GPS information via two external ports, the NMEA output port and

the CONSOLE port. The format and baud rate of each port can be configured separately.

The pin-out from the console port is specially designed. Please refer to ‘3.6.3.4 RJ-45

Connection for Satellite Modem’ for the pin-out of the console port.

NMEA DB-9 FORMAT: GPRMC/GPGLL/GPGGA

CON RJ-45 FORMAT: GPRMC/GPGLL/GPGGA

NMEA DB-9 BAUDRATE: 1200~115200

CON RJ-45 BAUDRATE: 1200~115200

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Figure 7-33 Configuration of GPS Format & Baudrate

7.2.9 Tilt Sensor Offset

The Tilt sensor has two axes: level and cross. When a tilt sensor or PCU is replaced,

both axes must be leveled by adjusting the offset of each tilt axis. The bubble inclinometer

on the top side of the level cage is used to do this. The bubble must be placed in the

center after the adjustment.

LEVEL OFFSET ANGLE: Adjust this value by using the up and down keys or by typing

the value until the level axis of the tilt sensor box has leveled.

(Press Key ENT to execute the value)

CORSS OFFSET ANGLE: Adjust this value by using the up and down keys or by typing

the value until the cross axis of the tilt sensor box has leveled.

(Press Key ENT to execute the value)

NOTE: The antenna will be initializing when entering the ‘TILT SENSOR OFFSET’ or

selecting the ‘INITIALIZE: YES’ after the adjustment.

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Figure 7-34 Configuration of Tilt Offset

7.2.10 TX DC 48V Power ON/OFF

The ACU has a built-in 48V DC power supply, (150W). Most L-band modems can

supply 24V DC power and support BUCs up to 4~6 Watts. When a customer requires an

8W BUC, such modems cannot supply enough power, so an external DC power supply is

commonly used. With a built-in 150W DC power supply dedicated to a TX BUC, the ACU

can provide enough power to the BUC. For applications using less than 6W BUC, most

standard L-band modems can provide DC power internally (24V DC).

The operator can control the TX DC voltage using the ‘TX POWER MUTE’ function. If

you select ‘ENABLE’, the antenna shuts off the TX DC voltage when the antenna is in

blockage or when the antenna is not tracking the satellite. But we do not recommend that

you shut off the TX DC power, because the BUC can cause electrical damage.

NOTE: The default TX DC power voltage is 48V. We can install the 24V TX power

supply (optional), if the dealer requests it.

NOTE: If the BUC is installed by the operator (not by SAMYUNG ENC), then please be

aware that the voltage is 48V.

Figure 7-35 TX DC Mute Function & CC using Console Port

7.2.11 Azimuth and Elevation Trim

Use the ‘Azimuth and Elevation Trim’ when it is necessary to adjust the heading offset

and cage offset while the antenna is tracking the satellite. (Condition for trim: Valid GPS data,

Tracking of correct target satellite (Correct satellite longitude), Correct heading angle)

Azimuth Trim: When the operator selects the ‘Azimuth and Elevation Trim’ function, the

PCU calculates the discrepancy between the calculated azimuth angle and the current

azimuth angle. Then, the PCU changes the heading offset to the new heading offset.

Discrepancy of Azimuth Angle = Calculated Azimuth Angle by PCU – Current Azimuth Angle

New Heading Offset = Current Heading Offset – Discrepancy of Azimuth Angle

Elevation Trim: When the operator selects the ‘Azimuth and Elevation Trim’ function, the

PCU calculates the discrepancy between the calculated elevation angle and the current

elevation angle. Then, the PCU changes the cage offset to the new cage offset.

Discrepancy of Elevation Angle = Calculated Elevation Angle by PCU – Current Elevation Angle

New Cage Offset = Current Cage Offset – Discrepancy of Cage Angle

Figure 7-36 Azimuth and Elevation Trim (Steps)

NOTE: Cage offset is configured by a SAMYUNG ENC engineer during factory setting.

The operator cannot change the cage offset, except the ‘Azimuth and Elevation Trim’.

NOTE: The operator must save the changed parameters using ‘SAVE NEW

PARAMETER’.

7.2.12 Diagnostic for Sensor and Driver

The operator can check the operating state of the antenna using ‘Diagnostic for Sensor

and Driver’. The operator can see the following parameters.

ERROR: Antenna Pointing Accuracy Error of Elevation, Cross and Azimuth Axis (Unit:

Degrees)

DRIVING OUT: Motor Driving Torque of Elevation, Cross and Azimuth Axis

SEN ANG: Angle of Elevation and Cross Tilt Sensor, Angle of Azimuth Gyro Rate,

Encoder Value

SEN VEL: Angular Velocity of Elevation, Cross, Azimuth Axis

Figure 7-37 Diagnostic for Sensor and Driver

7.2.13 Automatic Beam Switching Protocol

The ACU can change the target satellite upon receiving the modem protocol (iDirect,

iDrtABS, VIASAT,) of the SAMYUNG ENC protocol (GTP) from the external device. This

function is the ‘Automatic Beam Switching (ABS)’. The ACU receives the ABS protocol via

the NMEA port or the Ethernet port.

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Figure 7-38 ABS Protocol Configuration

KNS Ku-BAND TX, Ku-BAND RX Installation And Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual