Allied Radio Knight-Kit 83 Y 140 Assembly Manual - Page 5
Browse online or download pdf Assembly Manual for Recording Equipment Allied Radio Knight-Kit 83 Y 140. Allied Radio Knight-Kit 83 Y 140 10 pages.
Print PageSERVICE HINTS
If you
have followed all the previous
instructions
carefully
your KNIGHT
20,000 ohms per volt VOM should operate
properly.
If it does not perform properly
under
the tests
outlined,
here
are
some
helpful hints.
If the DC voltage ranges do not operate
properly,
or are
inoperative,
check all
connections to and the placement of R-19,
45K ohm;
R-20,
150K ohm;
R-21,
800K
ohm; R-22,
4M; and R-23, 15M;resistors.
If the AC voltage ranges
operate
im-
properly,
or are
inoperative,
check all
connections
to CR-1,
the
rectifier,
and
all connections
to and the placement
of
R-4,
3.75M;
R-5,
1M;
R-6,
200K;
R-7,
37.5K;
and R-8 and R-9 the recti-
fier calibrating resistors.
If the milliammeter
ranges do not op-
erate
properly, or are inoperative, check
the connections
to and the placement
of
R-11,
25.1 ohm
wirewound
resistor;
R-12, 2.5 ohm wirewound resistor;
R-13,
.225 ohm
wirewound
resistor;
and R-15,
11.0 ohm wirewound resistor.
Should it be necessary to replace R-3,
the
meter
calibrating
resistor,
please
include with your order the four numbers
written on the tape on the back of the
meter
movement.
This
determines
the
value of R-3.
In the unusual case
where
it would be
necessary
to
replace
CR-1,
the
meter
rectifier,
or
R-8 or
R-9, the
rectifier
calibrating
resistors, please
order
an-
other
rectifier and
we
will include
the
proper value of calibrating resistors with
i.
SPECIFICATIONS
D-C Voltmeter:
volt.
To 20 megohms
in 3 scales with
center
scale
values
of 12, 1200
and
120,000
ohms,
respectively.
Ohmmeter:
deep, including knob.
14
FUNCTIONS
Type of
Ranges
|Measurement
0- 2.5
DIRECT
CURRENT
MA")
Type of
Measurement
DC VOLTS
('DC Vv")
0- 10
0- 10 ma
XI
12 ohms
mid scale
X100
1200 ohms
mid scale
XIOK 120K ohms
RESIST -
DB Range
("AC V"')
0-250
|+10to +43 db
0- 1000 }+22 to +55db
0- 5000 |+30 to +63 db