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Фрагмент инструкции
However, signal quality can be degraded as you approach the fringe coverage areas. Refer to your satellite television service manual to check the viable coverage area. 4.1.5 Vehicle Turning During Startup (TracVision LF only) If the vehicle turns during the 60-second startup and initialization sequence that occurs immediately after turning on the power to the TracVision LF unit, the antenna gyro will record that variable motion as “standing still.” This may cause the antenna to track improperly. To solve this problem, turn the TracVision LF off for at least 10 seconds. Turn the system back on, making certain that the vehicle is either motionless or traveling in a straight line for the 60 seconds immediately following power-up. 4.1.6 Incorrect or Loose RF Connectors As part of preventive maintenance (described in Section 5, “Maintenance”) KVH recommends checking the antenna unit cable connections. A loose RF connector can reduce the signal quality. Refer to Section 2.3.2, “Connecting the Antenna to the IRD,” for directions on proper antenna unit to RF cabling. 4.1.7 Type of Multiswitch Used An active (not passive) multiswitch must always be used to connect the TracVision LF/SF system to multiple IRDs. Refer to Section 2.3.2, “Connecting the Antenna to the IRD,” for directions on proper multiswitch/multiple IRD cabling. 4.1.8 Stationary Use Only (TracVision SF only) The TracVision SF antenna was designed for stationary use only. As such, the antenna will track the desired satellite while your vehicle is parked, but not while the vehicle is in motion. For your convenience, KVH provides links to several web sites that offer satellite coverage information. Simply go to our web site at Baseline RF levels are included as part of the startup sequence provided in Appendix E. KVH offers an upgrade kit (KVH Part #02-1026) that adds in-motion tracking capability to the TracVision SF, allowing you to receive satellite signals while on the move. 54-0194 Rev. D A Guide to TracVision LF/SF A Guide to TracVision LF/SF The long-term fix, typically done at original system installation, is to install an Uninterruptible Power Supply (like those available for use with computer systems) on the IRD. Be sure to specify a UPS with adequate available current for all devices attached to it. (An IRD draws approximately 200 watts.) 4.2 IRD Troubleshooting The IRD that was provided with your satellite television service may also be the cause of less-than-ideal operation. 4.2.1 IRD Wiring Refer to Section 2.3, “Connecting System Components,” and your IRD user manual to confirm that the IRD is properly connected to the antenna unit and the television. 4.2.2 AC Power Fluctuating If the system periodically displays a picture for less than one minute, then enters Search Mode 1, the IRD low-speed data port may be locked up as the result of power fluctuations and will require a reset. This can be verified by hooking up a PC to the maintenance port and checking for error messages. Reset must be done by: 1. Completely shutting down DC power to the antenna. 2. Remove the AC source, either at the breaker or by unplugging the IRD. 3. Wait at least 10 seconds before restoring power, first to the IRD and then to the antenna. 4.2.3 No IRD Data Connection To view status messages, your TracVision antenna must be connected to the IRD’s low-speed data port. Refer to Section 2.3.4, “Connecting the Switchplate to the IRD,” for details. 4.2.4 EchoStar IRD Activation Check If you have purchased a DISH Network system, there is a chance that your EchoStar IRD will fail to acquire the satellite when you first activate it. This has been known to happen in IRDs that have not been activated within several months of their manufacture. Appendix D provides the manual satellite acquisition and activation procedure. Troubleshooting Troubleshooting Failed IRD Status Check As detailed in Appendix E, TracVision LF/SF completes a detailed startup routine whenever it is turned on. One of the first checks is the IRD status test. As noted in the typical startup cycles, the expectation is that the IRD and its communications link to TracVision LF/SF will pass this test. There are, however, two alternate results, each indicating a slightly different problem. Test Result: NONE If the system tests achieves a result of NONE, there is no communication at all between the antenna unit and the IRD. Solution Check to be certain that the IRD and TracVision LF/SF are connected properly at the low-speed data port and that both are powered on. Refer to Section 2.3, “Connecting System Components,” for correct antenna unit to IRD wiring procedures and diagrams. After verifying the connection, cycle the power off and on and review the startup test results. Test Result: UNKNOWN In the instance of a result of UNKNOWN, a communications link exists, but the data received by the antenna unit is garbled and unrecognizable. Solution As with a result of NONE, first check to be cer...
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