Model-3501c-001 OFDM demodulator

Model-3501c-001 OFDM demodulator

This equipment is BS/CS digital broadcasting signal generator that conforms to the technical conditions of satellite digital broadcasting mode with the frequency of 11.7ghz to 12.2ghz stipulated in no.74 "technical conditions of digital broadcasting system" inquired by Japan electric communication technology review board.Depending on the BS/CS mode selected, modulation signals encoded in isdb-s mode or dvb-s mode can be generated.The symbol rate range can be set is wide, the clock benchmark can choose to use the active mode or the subordinate mode to work, in addition, it is equipped with a frequency synthesis up-converter, can get the set channel signal.It can be used together with the company's 7705A digital transmission tester to form BS/CS test system for BER test and layered transmission reception characteristics and other tests.

Characteristics according to the mode switching, can output isdb-s or dvb-s modulation signal.Input interfaces can be either parallel (LVDS) or serial (TTL/ECL).When selecting serialization, PSYNC or SFSYNC signals are required in the case of BS.Input format BS mode: it is the packet length of 204 bytes, with transmission channel multiplexed TMCC, frame code stream.CS mode: 188-byte package length or 204-byte TS can be selected.The symbol rate can be set at the step of 1Hz. The range of different systems is as follows: the system is set as [BS] : 20Mbaud to 30Mbaud system is set as [CS] [TEST] : 500kbaud to 30Mbaud clock benchmark can be set as internal or external.(external: TS input clock as the benchmark) the FEC processing of the main signal and TMCC can be bypassed separately.(interleaving, energy diffusion, reed Solomon processing can be ON/OFF) with frequency synthesis up-converter, can set channels in the range of 900MHz to 2200MHz.Installed optional noise generating circuit, can be set C/N or Eb/No button.The LCD screen of the panel can be used for simple operation.Control USES the gp-ib interface as the standard configuration.3315 b.

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