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*Fram
PUNCH !oo
FIG 10
this 0-sets RSS ond thvs blocks the reading
of dato to UART. This is o kind of error and
the .operation reod must be started
by
using
START switch on
PU~'CH/READER.
Sometimes the
receiving device needs extra time to handle
the information. A printer getting CR must
hove the next word from the READER delayed
in order to ovoid possible data loss. This
can be done by using jumper PS2:5 and
RID~
TRE from UART is blocked as long as RID is
1-set. The t1me depends on setting
o~
P2
which con delay from lOms to ls. For DC
1~4
see section 5.3.
4.4 CLOCK PULSE
See Fig. 11.
Clock pulse generation
is build vp around
the BAUD RATE generator A37.
FIG 11
This generator is crystal controlled by Bl.
The generator makes it possible to get oll
baud rotes except 50 bps directly. See table
Fig. 12.
For this purpose FlO (::::3200Hz: 16::.200 bps)
is used and the
f
reqvency is divided
by
four.
Output
Output rotes (Hz)
rote rote
number
x64
x16
x8
xl
sel.
~_i__ .~J!~:4~: .1~~.~·~¥:: ·::·;t:6p~~ ~/
.... : . .
~~ A~._
. . .
F-f-.f:t~~~Ji·: ·~}~:~·~K :·:~~;~~~.; ::;~1r~ .. ~;
:®:
9:·
x
l
T~=-J~~~&ti~:: ::~ir6~' j28:~;~~: if::~gg&
• ·
1:
~}
3
lf
6
n-··?f.~~~t·:: :::~~s;;:;1t:
: :
J~t~~; ::::~
. . .
;~;
:r · "
'L .. _
s
:··~5
··nr·· ·· ·
;~s.,,r~r ·:r®~~~~
~-~
4
~
:
1-&~- \:L:~&L\x/<
·
n
°
n
rB-
~r~:g:r.;· ~~rolt ~;~"'.~·:-·lr ~1T.;-O:
·
-FT6-·
.:ts~s~f :fr~~41M:: ·1:~~~~~{
·hifa
~
*
*
F16 is
the buffered oscillator output
FlO is also used in a manual operation with
the rocker switch on the control panel of
FACIT 4040,
Right/Left Feed. First
it
is di-
vided
by
two, then
by
16
giving signal A
{f::100Hz).
4.5 OPERATION MODES
See Fig. 13 •.
The interface operation modes
ore
controlled
by
four switches: Sl-4. These ore located
0'1
the edge of the board.
0000
)::,.
0000
I
I
;u
;u
"' "'
"'
"'
I
I
FIG 13
0 0 0 0
tlJ
0 0 0 0
I
I
;;u
~
"'~
l
I
-0101-
-osf-
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