Teac A-3440 - Wow and Flutter Check

7-9 WOW AND FLUTTER CHECK
NOTE: Before performing this measurement, clean the
head and tape run guides. Also check pinch roller
pressure, etc. Use new test tape if possible for the
following adjustments.
Values obtained with different standards or equip-
ment cannot be compared.
PLAYBACK PERFORMANCE
. Connect Test equipment to the deck as shown in Fig.
7-8. (Except Oscillator).
. Load TEAC YTT-2003 (for LOW, 7% ips) or YTT-2004
(for HIGH, 15 ips) tape, and playback.
. Read the indication on the Wow and Flutter meter.
4. The Wow and Flutter should be:
0.10% or less (WRMS) for 15 ips
0.12% or lesss (WRMS) for 7% ips
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nN
bo
OVERALL PERFORMANCE
1. Connect test equipment to the deck as shown in Fig. 7-8.
2. Load TEAC YTT-8013 blank tape on the deck and Re-
cord a 3000 Hz input signal.
3. Rewind and playback the recorded signal.
4. The reading on the Meter should be:
0.15% (RMS) for 15 ips
0.18% (RMS) for 7% ips
NOTE: These figures apply to any tape position (such as
full take-up, full supply reel or about midpoint).
FREQUENCY COUNTER
OSCILLATOR
WOW & FLUTTER METER
DECK
under TEST
LINE IN
Fig 7-8 Test Connections for Wow/Flutter and
Tape Speed Test
7-10 VOLTAGE AND FREQUENCY
CONVERSION
(GENERAL EXPORT MODEL ONLY)
This deck is adjusted to operate on an electric power source
of the voltage and frequency specified on the reel tag and
packing carton. If it is necessary to change the frequency
or voltage requirements of this deck to match your area,
use the following procedures.
ALWAYS DISCONNECT POWER LINE CORD BEFORE
MAKING THESE CHANGES.
Frequency Conversion:
1. Remove the rear panel of the deck by removing 5 screws
and 2 feet on the top.
2. Set the power frequency selector slide switch to the 50
or 60 position to match the power line frequency in
your area. (See Location below.)
NOTE: This deck uses a DC Servo controlled capstan mo-
tor so it is not necessary to change the capstan
drive belt.
Voltage Conversion:
The deck may be set for 100, 117, 220 or 240 volts. To
alter the setting, pull out the voltage selector plug and rein-
sert it so that the desired voltage shows in the cutout. (See
location below.)
POWER FREQUENCY SELECTOR SLIDE SW
VOLTAGE
SELECTOR
PLUG
Fig. 7-9 Voltage and Frequency Conversion Locations