time signal transmitter造句

• Canada has no longwave time signal transmitters.
• This transmitter was decommissioned in 1956 and became the time signal transmitter standard frequencies for scientific reference purposes.
• As opposed to other time signal transmitters, the signal format is not published openly; a special license is required.
• The carrier of time signal transmitters, medium wave broadcasting stations is derived from an atomic clock and can be therefore used as frequency standard.
• To have a time basis for this, PTB operates several atomic clocks ( currently two cesium clocks and, since 1999 and 2009, respectively, two cesium fountain clocks . ) By order of PTB, the synchronization of clocks via radio is performed via the time signal transmitter DCF77 operated by Media Broadcast.
• Sound cards with a sampling rate of 192 kHz can be used to synchronize the clock of the computer with a time signal transmitter working on frequencies below 96 kHz like DCF 77 with a special software and a coil at the entrance of the soundcard, working as antenna [ http : / / www . qsl . net / dl4yhf / speclab / timesigs . htm.