Tascam 122 Service Manual page 8

122
3-1-4 Mode transition
The table below summarizes transition from one
to another due to an input signal.
~
STOP
F.FWD
REW PLAY
PAUSE REC/PLAY REC/PAUSE
Input signal
STOP
----- ­
STOP
STOP STOP
STOP STOP
STOP
F.FWD
F.FWD
-----­
F.FWD F.FWD
F.FWD F.FWD
F.FWD
REW
REW
REW
------­
REW REW
REW REW
PLAY
PLAY PLAY
PLAY
---- ­
PLAY
------­
REC/PLAY
PAUSE
PAUSE
-----­
-----­
PAUSE
-----­
REC/PAUSE
---=--==-­
REC and PLAY
REC/PLAY REC/PLAY
REC/PLAY REC/PLAY REC/PLAY
~
REC/PLAY
REC and PAUSE
REC/PAUSE
~
-----­
REC/PAUSE REC/PAUSE
REC/PAUSE
----- ­
3-1-5 Operation with more than one input
signal
When more than one input signal is received
simultaneously, the deck enters the mode indi­
cated below. When input signals applied simul ­
taneously are removed in sequence, the mode
indicated by the last signal to be removed is
normally enabled. If REC and PLAY or REC
3-1-6 Input/output levels
Input/cutput levels and voltages are given below.
8
Note. A diagonal line indicates that the current mode remains unchanged.
and PAUSE are combined, the record/reproduce
or record/pause mode wiH be enabled regardless
of the sequence in which the input signa, l s are
removed. If F.FWD (REW) and REC or PAUSE
are combined, the fast-forward (rewind) mode
will be enabled regardless of the sequence in
which the input signals are removed.
Input signal A
Input signal B Resulting mode
STOP
Any combination of F.FWD, REW, REC, PAUSE, and PLAY STOP mode
REW STOP mode
F.FWD REC and/or PAUSE
F.FWD mode
PLAY STOP mode
REW
REC and/or PAUSE
REW mode
PLAY STOP mode
PAUSE REC/PAUSE mode
REC PLAY REC/PLAY mode
PAUSE and PLA Y REC/PAUSE mode
PAUSE
PLAY REC/PLAY mode
Item
Minimum Standard Maximum Absolute maximum
Maximum supply voltage
- - -
7.0 V
Maximum input voltage
- - -
5.5 V
I
Recommended supply voltage 4.5 V 5.0 V 5.5 V
-
H-I8Vel input voltage
2.0 V
- - -
L·level, input voltage
-
-
0.8 V
-
Open·input voltage
3.2 V
-
- -
H·level output voltage
2.9 V
-
-:­
-
L-I8Vel output voltage
- -
0.4V
-