Table of Contents
Advertisement
2. OPERATION
11. Try to pull the Gear Lever
fu lly out.
If it will not
come,
turn the "Drive
Shaft
I"
through
exactly
360
0
counter
clockwise
and try again. This
procedure may have to
be
repeated
several
times until the Gear Lever can
be pulled out. The automatic
stop
positioning is th en correct,
and
can be
checked as
described in items
5)
and 6).
Note:
The switching point may
be
adjusted
a
little
by m eans of
the
screw
S. (Refer item
4).
12.
Replace
side cover on
the Level Recorder. The Level Recorder will keep
this adjuslment
as
long as th
e
lever
X
is k ept
in
ils
outer position.
Automatic
Distortiou
Measurements.
An automatic
plotting
of the
2nd,
4th and 5th
harmonic of
the
signal
may be
obtained
by
shifting
the
Filter
Switch
of the
Spectrometer
3,
6 or
7 third·
octaves ahead
of the
tes
t fr
equency
respectively.
However, when it
is
d esired
to
record the
third
harmonic
of
the
test
signal
a modified adjustment of
the
filt ering is n
ecessa
ry
:
The "Filter
Switch"
of the
Spectrometer should
be
shifted
to
a 1/3 octave
filler position
5 steps
higher than that
co rresponding
10
the
tes
t
s
ignal
and
th
e
au toma tic stop adjusted so
that it
occurs a
t
100
0
coun
ter
clockwise
from
th
e
filter
switching
posilion instead
of 180
0
as
described
in
the
preceding
section.
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
" O~I.'*
.......
_-
:""' 1 .:.3.:.6.2----
S- OLD -
~ il.M.~
2~
w
.
,
.
QP 1123
l
.
20
-
1!lO
1000
CIS
10000
..,,~,
Fig. 2.9. Check
of the
separation
between
chunn el of
a "High
Fidelit y"
stereo-
phonic pick-up
of
th
e
variable reluctance type. The
separation
is
only Iligher
than
20
dB from
250
to
3000
cis.
The fr equency response Iws been taken
without filtering in
order
to detect all th
e
irregularities
of
tIle pick-up itself.
This plot has been made
on
100 mm paper with ink writing (50 InIn waxed
paper is used
in
Fig. 2.5.
100 mIn writing width is obtained by m eans
of
a
m echanical multiplication device in the Level Recorder). TIle dotted lin
e
indicates the upper limit
of
the
reco rd's
cross-talk
measured with right
channel
sensitivity.
(
Refer
Fig.
1.13).
- Quick Links:
- Purpose of the Equipment
Hide quick links:
Advertisement
Table of Contents
