| 摘要 |
In accordance with an illustrative embodiment of the invention, a variable duty cycle analog-to-digital converter for use with well logging magnetic tape recording apparatus is disclosed. For those well logging signals which require a high degree of amplitude resolution, a long duty cycle is used. On the other hand, for those well logging signals which require a high degree of depth resolution, as, for example, dipmeter signals, a short duty cycle is used to allow the tape recorder to utilize a fast sampling rate.
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