KVH Industries TracVision 4 Manual de instrucciones
Satellite Television
KVHTracVision
®
4
technical
manual
•Installation
•Configuration
•Maintenance
A Guide to TracVision 4
TracVision 4-HP
Technical Manual Addendum
(ECO #7622)
The following changes apply to Revision G of the
TracVision 4-HP Technical Manual (KVH Part Number 54-0150).
4.3 TracVision 4 Field
Replaceable Units
Table 4-1 has been updated to show the new part number for the RF PCB.
FRU Part Number
Radome 02-0925-04
Main PCB 02-0992
RF PCB 02-1524
Antenna Gyro Sensor 02-1090
Antenna Gyro Gasket 24-0139
Elevation Drive Belt 24-0105-104
Elevation Motor 02-1356
LNB (North American System) 02-0870
LNB (European System) 02-1278
Data Cable 32-0619-50†
32-0619-100††
RF Cable 32-0417-50†
PC Cable 32-0628-06
Power Cable 32-0510-50
Ground Cable 32-0583-50
CPU Fuses 16-0017-3150
†North American system
†† European system
1
54-0150 Addendum to Rev. G
Table 4-1
TracVision 4 Field
Replaceable Units
TracVision 4-HP
Technical Manual Addendum
Sky Mexico Customers Only
(ECO #7247)
The following changes apply to Revision G of the
TracVision 4-HP Technical Manual (KVH Part Number 54-0150).
Installed Satellites
The Sky Mexico satellite TV service is broadcast via the PAS 9
satellite located at 58º West longitude. Therefore, the Sky Mexico-
configured antenna (KVH part number 01-0234-05HPT) is
programmed to track the following satellites:
If you choose, you can install any other satellite from the
antenna’s satellite library as Satellite B (following the procedure
in Section 2.7, “Installing Satellites to Track” on page 28). However,
please note that the antenna may not be able to find your selected
second satellite when you switch from PAS_9 to Satellite B, since
the satellite may not be viewable from your location. For example,
in Mexico, you can receive Sky Mexico signals from PAS 9, but you
cannot receive signals from DSS_101, which provides DIRECTV
service to the U.S.
Multiswitch Restrictions
If you need to connect more than two receivers to the antenna
system for PAS 9 service, you must use an active multiswitch
that generates a 22 KHz tone (for example, Spaun models
5602NF or 5802NF).
1
54-0150 Addendum to Rev. G
Satellite A Satellite B
PAS_9 NONE
LNB “Skew” Adjustment
Unlike most satellite TV signals in North America, which are
circularly polarized, the PAS 9 signal is linearly polarized, which
means it is transmitted in a certain orientation. Your Sky Mexico-
configured antenna is equipped with a special LNB that collects
these linear signals. To optimize reception, however, the LNB
must be oriented in the same way as the satellite signal. This
orientation adjustment is referred to as the LNB’s “skew.”
Figure 1 shows how skew determines the amount of signal the
LNB collects. The more signal it collects, the better the reception.
To set the skew, you simply need to rotate the LNB to the proper
angle, as shown in Figure 2.
The correct skew setting varies depending on your geographic
location, since the orientation of your antenna to the satellite
changes as you move. Follow the instructions on the following
pages to find the correct skew for your location and to adjust the
LNB’s skew setting.
2
54-0150 Addendum to Rev. G
Ideal SkewGood SkewBad Skew
= Satellite Signal = LNB "Signal Collector"
Figure 1
How Skew Works
Figure 2
LNB Can Be Rotated to Adjust Skew
Finding the Correct Skew for Your Location
You can find the correct skew for your location by either:
A. Querying the antenna (by entering commands via
a laptop connection), or
B. Finding your location on the PAS 9 skew map.
Option A - Querying the Antenna
To find the correct skew, follow the steps below.
1. Connect your laptop PC to the switchplate’s
Maintenance port using a serial data cable.
2. Open Windows HyperTerminal and establish the
following settings:
• Bits per second: 9600
• Data bits: 8
• Parity: None
• Stop bits: 1
• Flow control: None
3. Turn on the antenna and allow the antenna to
initialize. Data should be scrolling on your PC.
4. Type HALT then press Enter.
5. Type DEBUGON then press Enter.
6. Type the GPS command as shown below, then
press Enter:
Example: If your position is 24.8 North, 112.3 West,
you would enter GPS,25,N,112,W.
3
54-0150 Addendum to Rev. G
Command: GPS,XX,<N or S>,YYY,<E or W>
Where: XX = your latitude
YYY = your longitude
Figure 3
Switchplate Maintenance Port
If your computer does not have a
DB9 serial COM port, you can use
the following USB-to-RS232
adapter:
IOGear part number GUC232A
(visit www.iogear.com)
Instead of HyperTerminal, you can
use the KVH Flash Update Wizard
to enter antenna commands. The
Flash Update Wizard can be
downloaded from www.kvh.com/
wizard.
7. Type ZAP then press Enter to restart the antenna.
8. Once the antenna has initialized, type DEBUGON
then press Enter.
9. Type SKEWANGLE then press Enter. The antenna
reports the correct skew angle for the location that
you entered in Step 6.
Option B - Using the PAS 9 Skew Map
If you do not have a laptop, you can find the approximate skew
for your location using the map below.
When to Change the Skew
In general, if your LNB’s skew is set to within ± 8º of the ideal
skew for your location, the antenna should continue to provide
good satellite TV reception. However, if you travel to a location
in which your LNB’s skew differs by 9º or more, or if reception
degrades the further you travel, you should readjust the LNB’s
skew for your new location.
Example: If you traveled from El Salvador to Acapulco along the
coast, you wouldn’t need to change the skew, since the correct
skew is 66º for both locations. Even if you continued traveling
north to Cabo San Lucas, you should still have good satellite TV
reception, since the correct skew is 63º, a 3º difference. However,
if you traveled all the way to San Diego, where the correct skew
is 54º, a 12º difference, you might then need to readjust the skew
to enjoy satellite TV reception.
4
54-0150 Addendum to Rev. G
+70
+65
+60
+55
+50 +45 +40 +35 +30
Figure 4
Approximate Skew Settings for PAS 9 Satellite
Setting the Skew
To set your LNB to the proper skew, follow the steps below.
1. Turn off the power to the antenna.
2. Remove the radome and set it aside in a safe place.
3. Loosen the two wing screws securing the LNB
within the choke feed, as shown in Figure 5.
4. Refer to the skew labels on the end of the LNB and
on the LNB choke feed (shown in Figure 6) and
adjust the LNB as necessary to match as closely as
possible the correct skew.
5. Retighten the wing screws.
6. Reinstall the radome.
5
54-0150 Addendum to Rev. G
Figure 5
LNB Skew Adjustment
Figure 6
Skew Labels
Skews for PAS 9 are all positive (+)
angles. Do not set the skew to a
negative number.
Positive
Skews
TracVision 4-HP
Technical Manual Addendum
(ECO #7243)
The following changes apply to Revision G of the
TracVision 4-HP Technical Manual (KVH Part Number 54-0150).
Antenna Restarts After =CALGYRO Command
When the antenna receives an =CALGYRO command, it
calibrates the gyro then restarts. This eliminates the need to enter
a ZAP command following the calibration process.
If you need to calibrate the gyro, follow the updated procedure
below. This procedure replaces the “Calibrating the Antenna
Gyro” instructions in Section 4.6, “Replacing the Antenna Gyro
Assembly.”
1. With a PC connected to the switchplate’s
maintenance port, apply power to the antenna
unit.
2. Type HALT<cr>>(<cr> = Press the ENTER key)
while the system is performing the limit switch
initialization routine.
3. Type DEBUGON<cr> to enter Debug mode.
4. Type =LSTEST<cr>.
5. Type EL,300<cr>.
6. Type =CALGYRO<cr>.Verify that the Antenna
Gyro Azimuth scale factor is between -0.00090 and
-0.00110 and the Antenna Gyro Elevation scale
factor is between 0.00090 and 0.00110.
The antenna restarts. The gyro calibration process is
complete!
1
54-0150 Addendum to Rev. G
Refer to
Section 3.5, “Computer
Diagnostics”
for details on
connecting a PC to the
maintenance port.
1
54-0150 Addendum to Rev. G
TracVision 4-HP
Technical Manual Addendum
(ECO #7134)
The following changes apply to Revision G of the
TracVision 4-HP Technical Manual (KVH Part Number 54-0150).
The “=TV” configuration command printed in the manual is incorrect.
For your TracVision 4-HP system, the correct configuration command
is
=TVG4HPT
, not
=TVG4HP
.
You will need to enter the
=TVG4HPT
command whenever you replace
the main printed circuit board (PCB) or calibrate the antenna gyro, at
the steps noted below.
4.4 Replacing the Main PCB and
Fuses
Replacing the Main PCB
13. Type =TVG4HPT<cr> (<cr> = Press the Enter key).
4.6 Replacing the Antenna Gyro
Assembly
Calibrating the Antenna Gyro
8. Type =TVG4HPT<cr>.
TracVision 4
Technical Manual
This manual provides detailed instructions on the proper
installation, configuration, troubleshooting, and maintenance of
the KVH TracVision 4 system. Complete instructions on how to
use the TracVision 4 system is provided in the TracVision 4 User’s
Guide.
Throughout this manual, important information is marked for
your attention by these icons:
Direct questions, comments, or suggestions to:
KVH Industries, Inc. KVH Europe A/S
50 Enterprise Center Kokkedal Industripark 2B
Middletown, RI 02842-5279 USA 2980 Kokkedal, Denmark
Tel: +1 401 847-3327 Tel: +45 45 160 180
Fax: +1 401 849-0045 Fax: +45 45 160 181
Internet: www.kvh.com Internet: www.kvh.com
If you have any comments regarding this manual, please e-mail
A helpful tip that either directs you to
a related area within the manual or
offers suggestions on getting the
best performance from your system.
An alert to important information
regarding procedures, product
specifications, or product use.
An electrical safety warning to help
identify electrical issues that can be a
hazard to either this KVH product or
a user.
Information about installation,
maintenance, troubleshooting, or
other mechanical issues.
KVH Part # 54-0150 Rev. G
© 2004, KVH Industries, Inc. All rights reserved.
TracVision 4 Serial Number
This serial number will be required
for all troubleshooting or service
calls made regarding this product.
Welcome to TracVision 4
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