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m Minimum operating input voltage is as lows as 0.5 mV, permitting measurements
of wow and flutter directly from a small output tape head or PHONO cartridge.
•
The F L - 1 8 0 has a wide range of measurement range ( 0 . 0 0 3 to 10%) and is ready
for use with professional type tape recorders and other rotary machines.
•
R M S values ( J I S ) , mean values (NAB) and peak values ( C C I R / D I N ) can be directly
read according to international standards.
© Combination of w o w and flutter, weighted or unweighted, can be measured on
the basis of DIN standards. It is also possible to measure wow and flutter sepa-
rately.
•
High stability crystal oscillators are incorporated to provide 3 kHz and 3.1 5 kHz as
recording signal source.
•
Besides measuring w o w and flutter, the FL-1 8 0 also indicates the speed of revo-
lution on a 4-digit frequency counter. .
The frequency counter reference time can be used for crystal control and selection
of A C power frequency ( 5 0 / 6 0 Hz).
•
The FL-1 8 0 can be switched to operate as a frequency counter.
•
Adoption of monitor lamp allows measurements of w o w and flutter without
adjusting input level and input frequency. The monitor lamp flickers when the
input frequency of the frequency counter exceeds " 9 9 9 9 Hz", indicating an
overflow of frequency.
•
A C and DC voltage output terminals are provided for connecting a frequency ana-
lyzer such as oscilloscope, pen recorder, digital memory scope or FFT analyzer to
observe waveforms and analyze frequencies. A C voltage is proportional to w o w
flutter and DC voltage proportional to w o w flutter and the speed of revolution.
F E A T U R E S
3
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