Lines Matching +full:pulse +full:- +full:code
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20 Autotune Port: <tt>/dev/icom</tt>; 1200/9600 baud, 8-bits, no parity<br>
23 …nected via an optional attenuator and cable to either the microphone or line-in port of a workstat…
24 <p>The driver requires an audio codec or sound card with sampling rate 8 kHz and μ-law compandin…
25 … ray geometry. In Newark DE, 2479 km from the transmitter, the predicted two-hop propagation delay…
26 …r, the mean offset with a 2.4-GHz P4 running FreeBSD 6.1 is generally within 0.1 ms short-term wit…
30 …-kHz μ-law companded codec samples using maximum-likelihood techniques which exploit the consid…
31 …ecision radio clock for WWV transmissions. Electrical Engineering Report 97-8-1, University of Del…
34 …-Hz pulses and 100-Hz subcarrier are first separated using a 600-Hz bandpass filter centered on 11…
35 …-Hz subcarrier relative to the second pulse is fixed at the transmitter; however, the audio stage …
36 …pulse-width discriminator. The discriminator samples the I channel at 15 ms (<i>n</i>), 200 ms (<…
37 …-static miscellaneous bits, such as DST indicator, leap second warning and DUT1 correction. In thi…
38 <h4>Maximum-Likelihood Decoder</h4>
39 …ssociated with the maximum over all averaged values then becomes the maximum-likelihood candidate …
40 …-likelihood digit, likelihood vector and other related data. The maximum-likelihood digit for each…
41 …-likelihood digit. If a digit likelihood exceeds the decision level and compares with previous dig…
43 …-lock loop (FLL) which operates independently of the data recovery functions. The maximum value of…
45 …r, the data decoding functions are driven by the epoch. The decoder is phase-locked to the epoch i…
46 … after a long fade. Therefore, a candidate is considered valid only if the 5-ms signal amplitude a…
49 …-sense of noise alone. The signal quality metric depends on the minute pulse amplitude and SNR mea…
50 …on represents the high order bits of the metric, while the current minute pulse amplitude represen…
55 <p>The figure was constructed using a 2.4-GHz P4 running FreeBSD 6.1. For these measurements the co…
56 …the receiver at Newark, DE, varies over 9.0-9.3 ms. In addition, the receiver contributes 4.7 ms a…
62 …k is set, the time and frequency are disciplined only by the second synch pulse and the clock digi…
65 …-V standard, which is a bidirectional serial bus operating at TTL levels. The bus can be connected…
66 …n. If the <tt>/dev/icom</tt> link is not present or the open fails or the CI-V bus is inoperative,…
67 …metric as described above. Each of the five frequencies are probed in a five-minute rotation to bu…
71 … when the ray path is in moonlight (0100-1300 UTC) and the higher frequencies when the path is in …
73 …r is not disciplining the system clock. If the debugging trace feature (<tt>-d</tt> on the <tt>ntp…
76 …t> audio gain, <tt>epoch </tt>second epoch, <tt>secamp/secsnr </tt>second pulse amplitude/SNR, and…
78 …-bit shift register recording the hits (1) and misses (0) of the last 32 probes (hits and misses e…
79 <pre><tt>wwv5 000d 111 5753 3967/20.1 3523/10.2 WV20 bdeff 100 8348/30.0 WH20 0000 1 22/-12.4</tt><…
85 …re decoded from the received data and are in fixed-length format. The remaining fields are in vari…
90 …<dd>The quality character is a four-bit hexadecimal code showing which alarms have been raised. Ea…
99 …<dd>Compare alarm. A maximum-likelihood digit failed to agree with the current associated clock di…
103 …is self explanatory. Since the driver latches the on-time epoch directly from the second synch pul…
127 …k was set on the last minute, the AGC is safely in the middle ot the range 0-255, and the receiver…
141 …<dd>Specifies the microphone port if set to zero or the line-in port if set to one. It does not se…