Fostex B-16 - Page 37

within 0-72 a» 0.83msec. If these figures are off spec, repeat the pro 
cedures from 9), above.
NOTE: 1. Go through the above procedures in order listed.
2. Although the square wave jitters sideways, measurements are taken at
the center of the jitter. Measurements will be easier with less
jitter, obtained by experimenting with +trigger or -trigger signals.
2-4 Tape Speed Adjustment
2,4.1 Necessary equipment
Counter Frequency counter or Wow/Flutter Meter w/counter
Test tapes Fostex 9201 (for wow/flutter measurement, Fostex P/N
8266 0340 01 or STL #62-1 (1/2 inch, 15 ips, 3000Hz)
2.4.2 Adjusting procedure
NOTE: Always conduct the following only after PLAY Tape Tension Adjustment
as tape speed will be affected by tape tension during the PLAY mode.
1) Swing out the System Control PCB.
2) One OUTPUT from among channels 2 V 15 is monitored the counter.
3) Thread test tape on transport.
4) The pitch control pot (R14) , on the Function/Display PCB, is set to
approximate center and the pitch control 0N/0FF switch at right of R14
is switched ON.
5) Adjust HIGH pot R309, on the System Control PCB, for a counter reading of
3000Hz ±5Hz.
6) Switch OFF the pitch control.
7) Adjust PITCH pot R299, on the same PCB, for a counter reading of 3000Hz
±lHz.