ANSWERS TO QUESTIONS Q1. THROUGH Q21.

A1. 35-dB RMS because the highest SNR can always record and reproduce the widest range of input signals.
A2. A VTVM and a signal generator. (See figure 6-1.)
A3. Root-mean-square (RMS) signal-to-RMS noise.
    Peak-to-peak signal-to-RMS noise.
    Peak signal-to-RMS noise.
A4. The recorder can record all frequencies between 150 Hz and 150 kHz at 60 ips without varying the output amplitude more than 3 dB.
A5. The upper and lower limits of the Frequency response specification for that tape recorder.
A6. A too-high or too-low bias signal level setting for the record head.
    An improper reproduce head gap.
    An improper tape transport speed.
    Poor tape-to-head contact.
A7. The recorder has 2% third-harmonic distortion of a 100-kHz signal at 60 ips.
A8. Permanently magnetized heads.
    Faulty circuitry.
    Asymmetrical bias signal.
A9. Third-order harmonic.
A10. 45 kHz.
A11. With no distortion.
A12. Record and reproduce a square wave and see if the output on an oscilloscope is symmetrical.
A13. Non-uniform tape motion caused by variations in tape speed.
A14. Rotating parts of a tape transport, such as irregular tape reels, sticking guides and pinch rollers, and capstans.
A15. Fixed parts of a tape transport, such as fixed tape guides and magnetic heads.
A16. The TBE could cause a signal to jitter +/- 80 microseconds over a 10-millisecond period at a tape speed of 60 ips.
A17. The jitter could cause noise and a loss of accuracy.
A18. One of the tracks on a magnetic head could lead or lag the track next to it by as much as 0.20 microseconds at 120 ips.
A19. Adjust the recorder's electronics or realign the magnetic heads.
A20. When you record on one tape recorder and then reproduce on a different recorder.
A21. The tape drifts past the multi-track head at an angle.