What number harmonic is the primary harmonic distortion  in magnetic tape recorders?

1 Answer

Answer :

Third-order harmonic.

Related questions

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Last Answer : The recorder has 2% third-harmonic distortion of a 100-kHz signal at 60 ips.

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Description : List four factors that can degrade the frequency response of magnetic tape recorders.

Last Answer : a. A too-high or too-low bias signal level setting for the record head. b. An improper reproduce head gap. c. An improper tape transport speed. d. Poor tape-to-head contact.

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Last Answer : . a. Direct record (AM). b. Frequency modulation (FM).

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Description : What method for erasing magnetic tape is much more effective and reliable than using a recorder’s erase head?

Last Answer : Using a magnetic tape degausser

Description : What are two disadvantages of using a recorder’s erase head to erase data recorded on a magnetic tape?

Last Answer : Using an erase head is slow, and it may not completely erase the tape.

Description : After using a tape that was stored in an area where temperatures exceeded 130º F you notice pieces of oxide sticking to the recorder's tape-transport mechanism, to its magnetic heads, and onto the tape. What is the probable cause of these symptoms?

Last Answer : Oxide shedding. At temperatures above 130º F, oxide coating becomes soft and sheds.

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Last Answer : a. Computer-compatible digital tape recorders. b. Telemetry digital tape recorders. c. Instrumentation digital tape recorders

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Description : Technical manuals for tape recorders can state the SNR in what three different ways?

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Last Answer : A VTVM and a signal generator.

Description : Two tape recorders have signal-to-noise ratios (SNRs) of 25-dB RMS and 35-dB RMS respectively. Which of the SNRs can record and reproduce the widest range of input signals and why?

Last Answer : 35-dB RMS because the highest SNR can always record and reproduce the widest range of input signals.

Description : The head driver circuit of a tape recorder’s FM record electronics (figure 5-4) performs what function?

Last Answer : It amplifies the frequency-modulated output from the record oscillator and sends it to the record head.

Description : The equalization and phase correction circuit in a tape recorder’s direct reproduce electronics (figure 5-2) performs what function?

Last Answer : It generates an equalization signal which corrects any frequency response problems in the input signal from the pre-amplifier circuit.

Description : The head driver circuit in a tape recorder’s direct record electronics component (figure 5-1) performs what function?

Last Answer : It takes the signal from the summing network, amplifies it, and sends it to the record head for recording.

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Last Answer : Every 8 to 25 hours depending on the manufacturer's recommendations.

Description : What type of equipment should you use to demagnetize your recorder's magnetic heads?

Last Answer : A hand-held degausser like the manual degaussers used for degaussing magnetic tape.

Description : How should you clean your recorder's magnetic heads?

Last Answer : With a cotton-tipped applicator soaked in either isopropyl alcohol or a head cleaner recommended by the recorder's manufacturer.

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Description :  Which single phase ac motor will you select for record players and tape recorders?  a) Hysteresis motor b) Shaded pole motor c) Reluctance motor d) Two value capacitor motor

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Description : A recorder's erase head is always placed in what sequence on the record/reproduce track?

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Last Answer : Allow you to monitor the signals you're recording.

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Description : . How do tape transports with differential velocity capstans maintain a constant tape tension in the area around the magnetic heads?

Last Answer : The supply capstan is slightly larger than the take-up capstan. This causes the take-up capstan to pull the tape slightly faster than the supply capstan feeds the tape.

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Last Answer : The jitter could cause noise and a loss of accuracy.

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