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All
and
more
about Sharp
PC-1500
at
http://www.PC-1500.info
•
Recording signal
When
the contents
of
the
start bit
or data
bit is "O",
four
pulses
of
I
.27kHz are recorded
in
a
time
of 3.J
5ms.
When the
contents of
the
data
bit
is
"I",
eight
pulses
of 2.54kHz are
recorded in
the
tape
in
a
time
of
3.
l
Sms.
Shown below is
an
example of the conents
of.S
(one
byte)
is "O
1
O 1
O
1
1
O".
5
-
6
~:~P
+
~);"'+
$
4
-+-
S5
+
S6
+
S7
+
"1"
"o"
fl
1"
..
o,.
3-2. Remote circuit
VGG
(
+5.8V
)
74nx4
14
PAI
1~
110
port
2
f>1\2
12
3
PA3
11
~
4
PA4
10
9
7
8
M545!
6P
Stop
bH
Stop
bit
OFF
ON
REMOTE
REMOTEO
@
REMOTE
!
This circuit is provided to
perform
automatic control
of CMT
on/off
action.
Signal from the
PC-1500
is used
to actuate
the
relay via the 1/0 port(LH5810 or
LH58
1
l).
When the REMOVE ON/OFF
switch
is
in the
OFF
position,
the
REMOTE
0
circuit
shuts off
and
disables conlrol from the
PC-1
500.
Normally,
connection
is
made
to the
REMOTO 0
jack
when
one
unit
of
CMT is used and
both
REMOTE 0
and REMOTE
I
jacks
are
connected
to use two
units of
CMT.
PA
I
or
PAS
Rolav
OFF
ON
9
Do not
sale
this PDF
!!!
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