Anti-Tamper Digital Clocks - An Overview
Anti-Tamper Digital Clocks - An Overview
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The CL100 attributes an get panel (with ligature resistant/tamper resistant barrel lock and round critical) for staff to change facts over the LED Visual display unit devoid of eradicating the quilt/clock inside the wall.
utilizing the clock to bring about an Examine circuit that utilizes the plurality of delayed monotone signals to detect a clock fault.
A small big difference as a result of standard environmental modifications for instance temperature will probably be inside a predetermined detection threshold. A sizable variance in violations because of tampering (frequency and/or voltage) will likely be outside of the predetermined detection threshold.
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The water stage quantity may be identified depending on delayed monotone signals from one or more past Assess time. The plurality of resettable hold off line segments may well comprise faucets alongside a hold off line. Alternatively, the plurality of resettable hold off line segments comprises parallel hold off strains.
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Resettable delay line segments between a resettable delay line phase related to a minimum amount hold off time as well as a resettable hold off line section associated with a highest delay time are Every connected read more with discretely raising hold off times. The evaluate circuit is triggered because of the clock and takes advantage of the plurality of delayed monotone alerts to detect a clock fault.
The h2o amount quantity could possibly be identified according to delayed monotone indicators from a number of prior evaluate time 310. The plurality of resettable delay line segments may possibly comprise taps together a hold off line. Alternatively, the plurality of resettable delay line segments comprises parallel delay strains.
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39. The apparatus for detecting voltage tampering as outlined in declare 37, wherein the Assess circuit is triggered by a clock edge at an finish of the Assess time period.
Incredibly substantial steady point out frequency detection is dependent upon the delay among the reset operators with the shortest delay line. The shorter time required to reset this hold off line, the shorter some time in fact allocated to reset the delay line could be.
27. The method for detecting voltage tampering as described in assert 26, whereby the drinking water degree range is determined based on delayed monotone indicators from one or more preceding Examine time.
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