Fostex G16 - Page 51

recording signal from the track in the recording mode is leaking mto the track being
reproduced.
When sync crosstalk is excessively high, playback output during overdubbing will sound
muddy by effect of the recording signal leakage or cause oscillation at ping-pong record 
ing (where the playback output is transferred to another track).
2) Put NR ON/OFF switch to OFF.
3) Open the Controller Panel up, and take the “ Panel Extension ” out by unscrewing two
screws.
4) Prepare the insulated, long size screw driver to rotate the SYNC CROSSTALK CANCEL 
LER POTS.
5) Rotate the TRACK 1 SYNC CROSSTALK CANCELLER POT (£101) i on the CONNEC-
TOR BOARD PCB Assy to a point slightly CCW front the center position?\
6) Turn the RECORD TRACK SAFE/READY SELECTOR of TRACK 1 to “ SAFE ” posi-
tion.
7) Rotate the TRACK 2 SYNC CROSSTALK CANCELLER POT ( R102) to a point slightly
CW from the full CCW position.
8) Plug in an audio oscillator output to the recorder connector panel INPUT jack 2 and
apply a IKHz, - lOdBV (0.3V) signal.
9) Plug in a level meter to the recorder connector panel OUTPUT jack 1, and put TRACK 2
in the REC mode.
10) Rotate the TRACK 2 SYNC CROSSTALK CANCELLER POT (R102) CW slowly and
fix it at a point 3 ~ 5 dB above minimum point to obtain minimum sync crosstalk in
the high frequency region.
11) Measure the OUTPUT level of TRACK 1 while sweeping the test signal frequency 20 ~
20KHz. It is considered as a normal condition if the leaking level is less than -35dBV
(18mVr.m.s.) at IKHz and less than -4dBV (625mV r.m.s.) at worst peak point in high
frequency region.
12) The remaining tracks 2 ~ 16 are adjusted in the same way.
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