Revox C274 - Revoxsammler

sTUDtrR Rd/OX c274 13
In the following päraqräphs you HilI not {ind any
detailed in=tructionE +or calibration or recalibration
your machine but onty a definition of the commonly
used levelg and meaguring variables. Detailed
information cän be {ound in the maintenance manual.
_L_e.y-e.l-..!-"e*"f ..i.."rt.Lt-i..p_"D""e
B dEm
This level definition hä5 been derived
+rt:fi the 1 mlrl Power leveL.
The voltage droP across a 608 shm
load is A-775 V.
O dBu t= 0.775 Vi This level corresponds to a voltage
of 0.773 V without reference
to a load resistance-
I dFv i=l V]
dE
Line level
Operating
Tatre flux
level
This level corresponds to a voltage
of I V withor-rt reference to a
load resigtance'
This designaticrn does not speci{y
an abgolute value but a ratio between
tr+o voltages- Def.: tdFl = ?O
1og {U1 / U?1.
The line level re{ers to the level
thet is evailable at the output
o+ a tape recorder.
Corresponds to a level that prodt-tceg
a O VU readinQ on a VU meter.
Specifies the magnetic flux of the
tape. In the C?74 it is 257 nl'fb/m
for ü dB output level.
The {actory adjustg the C 274 tape recorderg to
the following vaLt-les:
IEC,/CCIR standard
De{ i ni ti on
Line level
tdBml
Vu-meter reading
tdBl
TäpP {lux
ntllb/m
Reference
I evel u o 257
NAB - ständärd
Def i ni ti on
Line level
tdBml
VlJ-meter reäding
rdBl
Tape
nWb /m
flux
Operating L
Peäk Level
+4
+10
0
+6
2e7
514