Fostex A-8 - Amplifier Adjustments

b) Determine the Standard to be used.
The wow and flutter meter is set to measure the IEC/ANSI peak value.
c) The wow and flutter meter must be calibrated for "weighted" measurements.
d) As the measured results will vary with respect to location on tape at which
it was taken, at least two parts - at beginning and near the end of tape -
should be selected for measurement.
NOTE:
Recommended Wow & Flutter Meter-.
Meguro Denpa Sokki Co. , ’ Model MK-668C (Japan)
There will be slight differences in absolute value between other manufacturers.
IEC/ANSI (peak value)
Reproduce method ±0.06%
Record/Reproduce Method ±0.08%
5) Tape speed
Tape speed is measured by using the Flutter Test Tape which contains a highly
accurate, continuous 3KHz tone.
Connect a digital frequency counter to either OUTPUT.
The indicated frequency should be 3KHz, ±0.5% for all speeds.
If tape speed is greatly offset from the specification, check pinch roller
pressure and takeup tension for correct values, and see that the tape path is
clean.
6.4 RECORD/REPRODUCE AMPLIFIER CHECKS AND ADJUSTMENTS
Checking and adjusting of the record/reproduce amplifiers can speedily and
efficiently be carried out by following the procedures below.
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