ABRET Digital Instrumentation Exam Questions and Answers 100% Pass

ABRET Digital Instrumentation Exam Questions and Answers 100% Pass A LFF setting of 5 Hz will attenuate a 5 Hz wave by approximately: a. 0.3 b. 30 mm c. 0.05 d. 5 mm - 0.3 (LFF of 5 Hz will attenuate a 5 Hz wave by 30%) Gradual changes in amplitude , frequency, or spatial distribution of rhythms is known as: a. asymmetry 2 100% Pass Guarantee Katelyn Whitman, All Rights b. attenuation c. background activity d. evolution - evolution Vertical resolution a. bits b. frequencies c. amplitude d. duration - amplitude The ability of an amplifier to reject like signals a. amplifier gain b. phase reversal c. common mode rejection 3 100% Pass Guarantee Katelyn Whitman, All Rights d. sensitivity - common mode rejection Which of the following principles best applies to the EEG amplifiers? a. aliasing b. sampling c. common mode rejection d. filtering - common mode rejection Increasing the number of seconds displayed on the monitor a. decreases spike duration b. increases spike amplitude c. does not change spike amplitude or duration d. increases spike duration - does not change spike amplitude or duration 4 100% Pass Guarantee Katelyn Whitman, All Rights Which of the following is the most appropriate sampling rate that should be used for a HFF setting of 70 Hz, according to Nyquist theory? a. 20 p/sec b. 210 p/sec c. 10 p/sec d. 140 p/sec - 140 p/sec (Nyquist theory is 2x the setting, ACNS Guidelines is 3x the setting) For low frequency filter (LFF), the corresponding time constants for LFF cutoff frequency of 3 Hz would be a. 0.05 sec b. 0.03 sec c. 0.06 sec d. 0.016 sec - 0.05 sec 5 100% Pass Guarantee Katelyn Whitman, All Rights A device that alters the frequency composition of a signal: a. conductor b. filter c. transducer d. capacitor - filter With high frequency filtering, muscle artifact may b