Operating instructions
•
CAL.
centering:
1.
Set
the
function
switch
to
CAL.lcw.
2.
Set
the
CAL.
control
(inner
red
knob)
to a tw
elve
0 I
clock
position.
3.
Adjust
R30
on
the
Second
IF
and
Dis-
criminator
Board
0054
(CH-A2)
for
a
zero
reading
on
the
FREQUENCY
meter.
Refer
to
Figure
5-3.
FM
CAL.
centering:
1.
Set
the
function
switch
to
CWo
2.
Zero
FREQUENCY
meter
with
the
CAL.
control.
3.
Set
the
function
switch
to
FM.
4. ·
Turn
the
DEV.
ADJ.
control
fully
counterclockwise.
5.
Set
the
FM
CAL.
control
(inner
red
knob) to a
ten
o'clock
position.
6.
Adjust
L5 on
the
Multi-Oscillator
Board
0103 (CH-A1)
through
the
access
hole
in
the
left
frame
of
the
chassis
(remove
Fl\I
Deviation
Meter
or
Oscilloscope)
for
a
zero
reading
on
the
FREQUENCY
meter.
Refer
to
Figure
5-3.
b.
The
FREQUENCY
meter
ranges
are
adjusted
by
means
of
an
oscillator
which
can
be
offset
from
10 l\IHz
by
exactly
±O.
5
kHz,
±1. 5
kHz,
and
±5. 0
kHz.
Refer
to
Table
5-4.
The
CE-7
first
IF
is
10 MHz
and
its
discriminator
will
detect
and
display
frequency
error
above
or
below
this
frequency.
c.
The
Model
303
Broadband
Mixer
must
be
installed
in
the
CE-7
before
any
adjustments
can
be
performed.
d. On
the
Frequency
Error
Meter
board
0101
(FP-A1)
mounted
on
the
back
of
the
FREQUENCY
meter
are
three
po-
tentiometers.
The
top
one
(R2)
is
for
±0. 5
kHz,
the
middle
one
(R4)
for
±1. 5
kHz,
and
the
bottom
one
(R6)
for
±5.0
kHz.
See
Figure
5-3.
SECOND
IF
AND
DISCRIMINATOR
BOARD
o05~
(CH-A2)
L5
MULTI-OSCILLATOR
BOARD
0103
~=-
-
R30------c
(CH-Al)
Figure
5-3. CE·7
Left
Interior
View
Without
Plug-In
5-8
5601·'0015"1
FREQUENCY
ERROR
METER
BOARD
0101
(FP-Al)
TBl-l
TB
l
-
3
R2
R~
Rb
.....
.-
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