Fostex B-16 - Page 24

signal. Q3 and Q4 are for REMOTE/LOCAL switching and when ON, the transport 1
RECORD SELECTOR switch becomes effective.
4.9 Remote control
Using the system control signal and counter signal from the transport, a
repeat function in addition to operations possible by the control buttons
on the transport are provided and channel selecting for recording, etc. is
possible by using the FUNCTION signal.
1) Switch/Display PCB
Signals from the transport are received by JI, the 40 pin connector on this
PCB, and distributed to the Control/Counter PCB.
All functions are controlled by switches Si through S17 which are wired in
parallel via diodes with the transport function switches. However, priority
of the function switches on either the transport or the remote control unit
is selected by Sia. when SIB is switched ON, a single pulse is generated
by U2 to null the transport controls.
Control of the transport is done by S19 through S24 which are wired in
parallel with the transport control switches. It must be noted here that
the Repeat Switch S101 and the Cue Switch S26, not provided on the trans 
port, are sole features added to this unit.
2) Control/Counter PCB
The repeat function is such that by depressing the CUE button at the "+"
count area, then depressing the REPEAT switch makes the transport go to the
ZERO RTN TO PLAY mode, lets it PLAY to the CUE point, then repeat the ZERO
RTN TO PLAY mode again.
3) Control circuit
When the repeat switch is depressed, flip-flop U3 is set and U3-13 goes to
"H ” level. As U7-B will go to "L" level at the same time, Q4 switches ON
to make the ZERO RTN input go to "L" and the transport thus goes to ZERO
RTN. Then, upon the counter reaching 0 second, a ZERO output of "H" level
is output from the counter circuit and applied to U4-5. An "H" level indica 
ting LOW tape speed is also received by U4-4 from the transport. This
results in "H ” level of U4-6, U4-9 also to "H", Q5 switching ON, PLAY input
going to "L" and the transport goes to the PLAY mode.
Upon reaching the CUE point, an "H" level EQUAL output signal from the count -
circuit is applied to U7-3. Therefore, U7-6 goes to "L" , U7-9 to "H", Q4
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