The following table shows proper Mode choices in a number of
common situations.
Measurement Ratio Numerator Denominator Mode
Attenuation, Ch. A A/G A Input, <8mV Generator A, >8mV 1
Gain, Ch. A A/G A Input, >8mV Generator A, <8mV 2
Attenuation, Ch. B B/G B Input, <8mV Generator B, >8mV 1
Gain, Ch. B B/G B Input, >8mV Generator B, <8mV 2
Channel Balance A/B A Input, >8mV B Input, >8mV Either Mode
Channel Balance B/A B Input, >8mV A Input, >8mV Either Mode
Any Any >8mV >8mV Either Mode
Any Any <8mV <8mV Invalid
W+F (Wow and Flutter)
The W+F (Wow and Flutter) measurement function is selected by
pressing the FUNCTION W+F key. It is only available in analog
analyzer mode.
The W+F function is used to measure wow and flutter (speed
variations) in analog tape recorders and turntables. The W+F
measurement supports the IEC (DIN), NAB, and JIS standards.
Wow and flutter is measured by playing a 3 kHz or 3.15 kHz reference
tone on the device-under-test. The reference tone is usually
pre-recorded on a device with minimal wow and flutter. The recording
is then played back, and the output is sent to the ATS-1 Dual Domain
for analysis. The instrument determines the amount of speed
fluctuation and the amount of speed error.
Figure 4-28. Main panel in W+F function
4 Functions
W+F (Wow and Flutter) Function Descriptions
4-30 ATS-1 Dual Domain User's Manual
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