STUDER REVOX C274 - Data Recording; Storing Data; Preparing Data for Recording; Data Recording Modes

sTUDtrR
Rd/OX
c274
L"=:=*-D=AI€*RF,c=.9SpIJ='rE-*'-*'-'=
F-qn-o-a-rv-
trlith the
C?74
it
the tirne
a{ day.
time co*nter
t:r
keys are
Lrsed
in
is
pos=ible
to record
the
dat*" the
content
any
6-digit
riunber'
conjunction
Hith
thi=
data
guch
ag
of
the
real-
The
{o1lowin_o
{eature:
The data
recording
mode is
activated
by
pres=ing
the
f,-TRACH
t17l
Fiey.
Channel
4 is
chanqed
over
{rom a normal
audio
channel
ta
a data
channel
which
,nean=
that
it can
no
longer be
used
for audio
signälE.
The ceunter
display
is thänged
over
te the
selected
data
(code',
time. date
or coutnter)-
Any
of
thro däta
types
can
be
gelected
+.]r
recerding:
Example:
Ti.ne and
date
Counter
and
date
Tiße änci
ä-diqit cade
n*rnber
Etr-
It is älsn
psssible
to
record onlv
one type
of
data
which in
thig case
ig
recsrded tl{ice
äs often.
j.,e-
4
times instesd
of
tt"ro times
per
second.
The data
are recerded
by
tneanE of
FSli modulatisn
with 1O5Ü
and 1258
Hz and
can be copied
in analog
mode-
The
datä rÄn only
be read
in
i-he
trlav
tnsde.
Typical ätrplirations:
r
Automai-ed
broadcasting
r
Audi.o-visual
atrtrlications
.
StiF-+ree
recording
o* the
counter
content
The data recordinq
{unctisn is
not
suited
+or
phase-locF:ed
=ynchroni2atit:n
of
several
tape
recerders.
F t
-e,!:
i. n- s- *-t
-h"-e*....-C
"a**t."+-
Snitch
on
the ü-TRACK
mode [17].
The data
to be recorded
are selected
with
the key=
CODE
t161"
DATA
trSl.
TIl"lE I14l! or CtrUNTER
tl3l. The
data
cän be
set
with
SELECT
IE}l
and
STEP
t?l and
read
in r,rith
TRANS t101. In
arder
to
prevent
inadvertent
modifications.
the
TRANS
key
must be
pressed
at least
1 second
for TIl"lE
and
DATE.
The
display
remain=
dark
during this
clne
second'
The
value is sltbsequentlY
read in.
The data
are
gaved
in
a battery
hu*{ered
RAI{
which
is
pärt
sf
the clotk
chiF.
Pr epar-.!'-ng._*t.h-e*-."d-a--tg**f-9,---1*-'-1:-e--c;-o,-5_d"l"n.g--..'.....--"........
Switch on the
f,-TRACK
mode [17].
In
STBP
mode
you
can select
any
combination
o*
two
data
types
hy
pressing
CüDE!
DATE'
TIHE
or
CÜUNTER.
I+
you
select
two
tvpe=, the
other
two
are
inhibited.
I+
you
want
to
chänge
the selectionr
yout
must
cäntrel one
data
type
by
pressing the
trtrrresFonding
key Ägain.
hJhen
tvro
data types
are
selected.
the display
177
Hith
the
corresponding
LEDs
alternate=
between
the two
values
te.g.
time
and
date)
in ?-second
intervals'
If
no data
type
is
selected,
the display
t7l
shous
f,hannel
4 i.s
prepared
+t:r
recording
by
pressing
the
FEADY
CH
4 t59l key.
The recording
level
js
fixed
and
independent
of
the settinq
of
the INPUT
LEVEL
potentiometer.
In retrord
mode.
the selected
data
are recorded
on
chennel
4 and
read and
displayed
directLy
via the
tape
(regardlesg
of
the output
selector
position).
The
recording
can
thus be
visually
manitored-
Channels
1 to 3 ran
be used
as
nsrmal
audio
channels.
hlhile
recording
is in
prtrqress!
all
five operator
contrsls
reläting tB data
recording
are disebled"
howevern
the
data types
can still
be
altered
via
the
FS
232 interface.
In
this Hay
it is
feäBible
ttr
recsrd
other data
e.g. in addition
to the
time-
I{
the
rpccrder
shot-tld supply
the deta
to a second
machine,
the data are
available
on
the audio
output
ianalt:g
signali' In this case
the outpr-rt
selector-
of
the
rna=ter unit
mugt be
set to
INPUT t401.
ThP
recording
level En
the second
matrhine
rnust
be
between
-15
snd
-1ü
dE.
U the
level o{
the signal
read in
during
ä
recording
is too low
te.g. tape mounted
in
reverEe
directioni
or i{ the data read
in do
not correspond
to
the reccrded data
{record
electronics
e.g.
defective),
the characters
"A-
appear
on
the
diEFlay.
In
play
rnode the
recorded data
äre read
in and
di=played
alternately
together
with
the
corresponding
LED.
bJhile the data
channel
reproduces
e.g.
the
time and date,
the
TII'IE or
the
DATE
key can be
pressed
to
sllFpress the
value
that
is not of interest
go
that
e.g. only
the time
is
displayed.
As soon as
the next
trlay
command
(activated
within
play
or in stop
mode)
ig entered'
both
values
are aqain displayed.
Although
the
data
are
recorded
twice
per
second
in
order
to improve the tränsmigsion
reliability!
only
the
+irst value is
displayed
as
weII as
made
available
at the output
o{ the
gerial
inter+Äce
5B
that
the display
r*ill respond
as
quickly
aE
possible.
Maximum data integrity
is achieved
only
a*ter two
recorded values
have
been read
and
the
internal error
correction
=ystem
haE been
able
to
proce=s them.
If no
data
can be read correctly.
the values
are
intertrElÄted
for a
short
time after
t*hich
the
data
failure
i= signalled on
the display
with
"--
lrlhEn
ä stt]p
i5
initiated,
the
däta
prepared
for
Key
Functi
on
f,-TRACti
I 17l
mode
Activates
the
data
recording
TIHE T
14]
ReÄdE
tirne
frtrtn the
internal
clEck
chip
DATE
t15]
Readg
date
f rom
the
trloci'i
chiP
f,OUNTER
t13]
ReÄl-tims
tatre
col-lnter
coDE t 161
6-di
qit
identif
i cati
en