Test loop translator
A test loop translator (TLT) is a type of radio frequency converter or heterodyne, used to translate between uplink and downlink segments (generally in the same band), to allow for "loop-back" testing and calibration of a satellite ground segment without the need to interface with the satellite.[1][2] The test loop translator is an extremely valuable tool for evaluating the performance of satellite earth stations. It allows the user to carry out analysis, alignment and testing without incurring satellite airtime costs and the risk of interfering with other satellite users. Thus, it has applications during equipment development, qualification, trouble-shooting and in-service routine monitoring.[3] TLTs generally contain a fixed or preset local oscillator and a preset gain, though the LO and gain may be adjustable in some models.[1] Most models have a negative gain (i.e., a loss), with -15 dB being the most common.[1] Test loop translators can cover one or more of the satellite communication bands S, C, X, Ku, DBS and Ka.[4] [5]
References
- ^ a b c "Test Loop Translator". http://www.novella.co.uk/test_loop_tech.htm. Novella Satcoms Ltd.
{{cite web}}:|access-date=requires|url=(help); External link in|website=|url=(help) - ^ "Model ASC 710C Test Loop Translator". Atlantic Satellite Corporation. Retrieved 23 February 2015.
- ^ "Loop Test Translators for Satcom Systems" (PDF). www.atlantecrf.com. AtlanTecRF.
- ^ "Loop Test Translators". www.atlantecrf.com. AtlanTecRF.
- ^ "Loop Test Translators". www.atlantecrf.com. AtlanTecRF.
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