Triplett 360PL User manual

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MODEL
630-PL
Volt-Ohm-Milliammeter
The Triplett Electrical Instrument
Company
Bluffton, Ohio

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2
FOREWORD
With your
purchase
of
a Model
630-PL
Volt-Ohm-Milliammeler, you
have
made
a worthwhile investment, not only in a fine instrument,
but
backed
up
by
a company which
has
been
making instruments for more
than
hall
a century. The Triplett Company stands behind your
630-PL
and
will
give
all possible
assistance
in its use
and
maintenance.
TRIPLETT
WARRANTY
AND
CONDITIONS
OF
SALE
The Triplett Electrical Instrument Company
warrants
instruments manufactured by
ii
lo
be
free from defective material or factory workmanship
and
agrees
to repair
or replace such instruments which
under
normal
use
and
service, disclose the
defect lo
be
the fault
of
our
manufacturing. Our obligation
under
this warranty is
limited to repairing or replacing
any
instrument or test equipment which proves to
be
defective, when returned to
us
transportation prepaid, within ninety
(90)
days
lrom the
date
of
otiginal purchase.
This
warranty
does not
apply
to
any
ol
our
products which
have
been
repaired
or
altered by unauthorized persons or service stations in
any
way
so
as,
in
our
judgment, to injure their stability or reliability or which
have
been
subject to misuse,
negligence or accident or which
have
had
the serial
number
altered, effaced, or
removed. Neither does this
warranty
apply
to
any
of
our
products which
have
been
connected, installed, or
adjusted
otherwise
than
in
accordance
with the instructions
lumished by us. Accessories including all vacuum tubes
and
batteries not
of
our
manulacture
used
with this product
are
not covered by this warranty.
· The Triplett Electrical Instrument Company reserves the right to discontinue models
al
any
time, or
change
specifications or design, w.ithout notice
and
without incurring
any
obligation.
Upon acceptance
of
the material covered by this invoice the
purchaser
agrees
to
assume all liability
for
any
damages
and
bodily injury which may result from the
use
or misuse
of
the material
by
the
purchaser, his employees, or others,
and
that
The Triplett Electrical Instrument Company shall
incur
no liability
for
direct or
consequential
damage
of
any
k
in
d.
Parts will
be
made
available
for a maximum period
of
five
(5)
years
after
the
manufacture
of
this equipment
has
been
discontinued. Parts include all materials,
charts, instructions, diagrams, accessories, et cetera, whic~
were
furnished in the
standard
or special models.
This warranty
and
conditicns
of
sale
are
in lieu
of
all others expressed or implied
and
no representative
or
person is authorized to assume for us
any
other liability
in co-:.:1ection with the
sale
ol
our
products.
The
Tr
iplett Electrical Instrument
Company
Bluffton, Ohio
Printed
in
Part
o.
84-89-011764-15
(For
abov erial
o.
29,5
00
and
after
April
30,
1963)
TABLE
OF CONTENTS 3
Page
Familiarization . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..........
•• • 4
Operation
Measuring
DC
Volts . . . . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . 6
Measuring
AC
Volts
.................
........
..
......
8
Measuring
DC
Resistance
...
.........................
10
Measuring
DC
Current .
....
.
......
...............
.
...
12
Measuring Output Volts
(DB)
........................
14
Operation Chart
...............
.
...
.
.............
...
.
16
Measuring Capacity
..........
..
........
.
..
........
.
..
18
Additional Measurements
Measuring Kilovolts
...
. .
...
..
...
.
......
...
......
.....
20
Measuring High
DC
Current
.......
...........
.
.......
21
Accessories . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . ••••• •
21
Additional Applications
....
..
..........................
22
Maintenance
......
.
....
.....
........
..
......
..
...
•••••
25
Interior View-Parts Location
.................
..
....
...
26
Replaceable Parts
....
...
...........................
•• .
27
Circuit Diagram
.....
.....
.
...
....
.............
....
. •. •
28
Data
DB
Chart
........
...
..........
......................
29
EIA
Condenser Color Code
....
.
...
......
..
...........
30
EIA
Resistor
and
Speaker Color Code
..........
......
.
31
EIA
Wiring Color Code .
...
..
.....
...
......
.
......
....
31
EIA
Transformer Color Code
..
.
.................
..
...
32

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4 ,FAMILIARIZATION
The Model 630-PL Volt-Ohm-Milliammeter is a rugged
long scale multi-range instrument in a compact portable case.
Remove the test leads
from the small envelope and notice
the two alligator clips enclosed. The clips slide over the ends
of the test prods and make very handy connectors.
Plug the small ends
of the test leads into the panel jacks
marked
COM and V-n-A. The jacks and plugs are espe-
cially made
for trouble-free, low resistance connections.
Scales
Notice there are five scales on the meter. The top scale
(red) is used when measuring ohms. This scale is marked
from 0 to lK (at left side). With the switch knob turned to
nx 1, the ohms scale is read just as it is marked. With the
switch knob turned
to nX 10, the numbers on ohms scale must
all be multiplied
by 10. Likewise nx lK and OX lO0K mean
to multiply by 1000 and 100,000 respectively.
The second scale
from the top (black) is used to read
all DC currents and voltages. The third from the top (red) is
used
for all AC voltages except the 3 volt range-the latter
is
read on the bottom red scale (marked 3 at full scale).
The lowest scale (black) is used
for all decibel measure-
men
ts. Notice the chart near the lower right hand corner of
the dial. This is used in conjunction with the DB scale as
explained on page 14.
P anel
Just below the meter is a small plastic screw. This is
rotated with a small coin or screw driver to adjust the meter
pointer
to zero. This need be adjusted only occasionally
but
for best accuracy the pointer should always be on zero
before making a measurement.
The large knob in the lower center
of the panel is used
to select aH ranges. The markings are self explanatory.
Left of the knob is a recessed n ADJ control used when
making resistance measurements.
To the right of the knob is a recessed switch used for
reversing polarity on DC ranges.
Observe the jacks
and note carefully the marking for
5
each. You will use the COM and V-n-A, jacks for most
measurements. The polarity reversing switch must
be in the
"
DC+, n, ACV" position !or all ohm and ACV measurements.
P RO TE C TI O N: A one ampere {use Is incorporated in the ohm circuits for
protectinq the ohm circuit when it is accidentally placed across high voltage. A
spare fuse is attached
to unit inside the tester.
Accuracy
Your 630-PL is accurate to within 3% of full scale
reading on all
DC ranges except the 5000 volt range which
1s within 5%, 4% on all AC ranges except 5000 volts which
is 5%, and 3% of the scale length on all resistance ranges.
Precision, non-aging resistors insure lasting accuracy.
All
units are calibrated at 77° F. AC ranges are calibrated on a
60 cycle sine wave. In choosing ranges always endeavor to
have the readings fall in the upper (or right hand) half of
the scale for greatest accuracy.
Ranges
The following ranges are self contained in your 630-PL:
DC Volts 2.5-10-50-250-1000-5000 at 20,000 Ohms
AC Volts
DC Microamperes
DC Milliamperes
DC Amperes
Ohms
Megohms
Output Volts(AC)
Decibels
per
Volt / 0-.250 at 10,000 Ohms per volt
0-3-10-50-250-1000-5000 at 5,000 Ohms
per
Volt
0-100 at 250 Mv.
0-10-100-1000 at 250 Mv.
0-10 at 250 Mv.
0-1000-10,000 ..... ( 4.4-44 at center scale)
0-1-100 . .. . (4400-440,000 at center scale)
0-3-10-50-250-1000 at 5,000 Ohms per Volt
-20 to + 11, 21, 35, 49, 61, 75 on 600
Ohm line
Your
630-PL is well constructed but like any instrument
should
be handled carefully. You will also want to keep the
panel clean
as cleanliness and carefulness go hand in hand.

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6
OPERATION
Measuring
DC
Volts (Fig.
1)
Rotate the selector switch
to
the appropriate range
for
DC
volts. Always start with the highest range
if
in doubt
as
to
the approximate voltage.
In
choosing ranges, endeavor
to
have the readings
fall
in the upper, or right hand, half
of
the scale
for
greatest
accuracy.
Plug the black test lead into the
COM
jack
and
the red
lead into the V-n-A jack
as
shown in Figure
1.
CAUTION:
When measuring up
to
5000
volts set the
selector switch on the
5000
/
1000
range, plug the red lead
into the jack marked
5000
DCV,
and
leave the black lead
in C
OM.
Connect the test prods
ACROSS
the voltage source. The
red lead is positive. Where polarity is difficult
to
determine,
the meter may read backwards.
No
damage
will
be done if
this occurs. Simply reverse the polarity switch.
The V-n-A jack will
be
positive when the polarity switch
is
in the "DC+ " position.
Read all
DC
voltages on the top black meter scale.
Notice that the scales are not all marked exactly the same
as
the range indicated by the knob position. Thus
0-2.5
volts
is
read on the
0-250
scale
(i.
e.
+ by
100)
on all readings,
the
0-1000
range is read on the
0-10
scale by adding two
zeros,
and
the
0-5000
range
is
read on the 0-
50
scale by
adding two zeros.
The high sensitivity
of
20,000
ohms per volt
will
allow
you
to
take measurements in low current circuits such
as
grid
and
discriminator circuits.
Voltages
as
low
as
.
005
volts, (.
250
volts
full
sc~e
al
10
,
000
ohms per volt)
may be re
ad
by
using
100
uA
DC
current range. Simply place the r
ange
selector
in the
100
uA position
and
read
the voltage on the
0-250
scale (divi
de
by
1000
for
volts).
CA
UTI
O
N:
For max
imum
safety do not handle tester or leads when connected
to
high
volta
ges.
M
ake
certain
that
no co
ndensers
are
ch
a
rge
d to
a
high
volta
ge.
NOTE:
To measure above
1000
volts, the red le
ad
must be plugg
ed
in o the
5000
DCV
jack
and
selector switch set on the 5000/1
000
D
CV
r
an
ge.
For handy operation chart see
pages
16
and
17.
50
DC
0
5f
c°v°
~
0
,i.
A
OUT
Q
PUT
DC-
COM-
V-Il:A
0
Figure I- Measuring
DC
Volts
1

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8
OPERATION
Measuring
AC
Volts
{Fi
g.
2)
Rotate the Selector switch
to
the appropriate range
for
AC
volts
and
set the polarity switch
to
ACV.
Always start
with the highest range
if
in
doubt
as
to
the approximate
voltage.
In choosing ranges, endeavor
to
have the readings fall
in the upper, or right hand, half
of
the scale
for
greatest
accuracy.
Plug the black test lead into the
COM
jack
and
the red
lead into the V-n-A jack
as
shown in Figure
2.
CAUTION:
When measuring
up
to
5000
volts set the
selector switch on the 5000/1000 range, plug the red lead
into the jack marked
5000
ACV,
and
leave the black
lead
in
COM.
Connect the test prods ACROSS the voltage source.
As
there is no polarity on
AC,
the red
and
black leads may
be
interchanged without causing the meter to
read
backwards.
Use
the two lower red scales
for
AC
volt readings. Note
that the bottom scale is
to
be
used
ONLY
for
one range,
namely the
0-3.
When using the
0-1000
AC
volt range,
read
on the
0-10
scale
by
adding two zeros. When on the
5000
volt range
use the
0-50
scale
by
adding two zeros.
W
i
ih
the special design
of
the two diodes in a modified
full
wave bridge circuit, the
630-PL
gives a wide frequency
response usable
from
10
c p s
to
500
Kc.
CAUTION:
For maximum safety do not handle tester
or leads when connected
to
high voltages.
NOTE:
To
measure above
1000
volts, red lead must
be
plugged into the
5000
ACV
jack
and
the selector switch set
on the 5000/1000
ACV
range.
For
handy operation
chart
see pages
16
and
17.
i~
0
5fc°v°
"f<
0 l'A
OUT
Q
PUT
=:JII
Figure 2-Measuring
AC
Volts
9

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10
OPERATION
Measuring
DC
Resistance (Fig.
3)
Rotate the selector switch to the appropriate range
for
ohms determined
from
the following chart:
To
Read Set Switch
to
0-100
□
-
ohms
.......
..
..
...
.
..........
nX
1
0-10,000
...............
..............
nx
10
0-1
Meg. .
................
....
......
.
nX
lK
0-100
Meg
...........................
nX
l00K
Set the polarity switch to n.
Plug the black test lead into the
COM
jack
and
the red
lead into the V-n-A jack
as
shown in Figure
3.
Short the test prods together
and
adjust
then
ADJ
knob
until the meter pointer reads 0 on the top red (n) scale.
(The 0
for
the ohms scale
is
at
the extreme right side
of
the scale
.)
Connect the test prods across the resistor
as
shown. If
the resistor is wired in a circuit, disconnect one end
of
the
resistor before taking the reading.
Each time
an
ohm range is changed, it is well
to
check
the 0 setting
as
outlined in
paragraph
4 above.
The basic scale 0-lK
(0-1000)
is used
for
reading on all
ohm ranges. Simply multiply the scale numbers
by
1,
10,
1000,
or
100,000
as
in
dicated
by
the selector switch setting.
It
should
be
kept in mind that in the measurement
of
resistance a current is passed through the unknown resistor.
Generally this current is so small
as
to
be
negligible.
How-
ever on the
0-1000
range fairly high current is employed.
CAUTION
: On
XI
ohm position reading approximately center scale
(4.4
ohms)
the current drain
from
the
J.S
volt battery is
170
MA.
It
is
desirable to
make
a
practice
of
usinq one
of
the hiqher ohm ranges
for
general continuity or circuit
testing. This will give you much longer battery life.
NOTE:
In
the ohms circuit the battery polarity
at
the leads is
as
indicat
ed
.
The red lead is positive.
Since the scale
of
an ohmmeter is non-linear, the accuracy
of
the readinq
cannot
be
expressed
as
a
per
cent
of
full scale. Ohmmeter accuracy is generally
referred to a linear scale such
as
the
DC
volt scale. Thus
±3%
ohmmeter
accuracy means
an
allowable
±
l.S divisions on the
DC
scale. For example 2
ohms could read
from
about
1.75
to 2
.3
ohms
and
be
within tolerance.
NOTE
:
Do
not touch
any
metal parts
of
the circuit when using the high ohm
ranges.
It
is not dangerous but your body resistance
can
cause
serious error.
,
For
handy operation
chart
see pages
16
and
17.
500
DC
0
5000
~
~V
*A
0 A
UNKNOWN
RESISTOR
OUT
Q
PUT
Figure 3-Measuring
DC
Resistance
11

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12
OPERATION
Measuring
DC
Cu
rre
nt
(Fig.
4)
Rotate the selector switch
to
the appropriate range
for
DC
current. Always start with the highest range if
in
doubt
as
to
the approximate current.
In
choosing ranges, endeavor
to
have the readings
fall
in the upper, or right hand, half
of
the scale
for
greatesi
accuracy.
Plug the black test lead into the
COM
jack
and
the red
lead into the V-0-A jack
as
shown in Figure
4.
Connect the test prods in
SERIES
with the circuit to
be
measured.
Do
not test directly across
any
potential circuits
as
this may burn out the instrument
and
shunt. The red
lead
is
positive. Where polarity
is
difficult
to
determine, the
meter may read backwards.
No
damage will
be
done if
this occurs. Simply reverse the polarity switch.
Read all current ranges (including microamperes,
mil-
liamperes,
and
amperes) on the upper black scale. When on
the
10
Ma.
range use the
0-10
scale
and
read direct. On the
100
Ma.
range again use the
0-10
scale by adding one zero.
CAUTION:
Turn
off
the power before connecting the
meter to the circuit.
Do
not handle tester or leads in high
voltage circuits.
In
using the
100
microampere range, the meter may read
differently than calculations would indicate. This
is
some-
times caused in low current circuits by a slight leakage of
voltage due to moisture. Other times a slight potential
is
generated
by
soldering or joining
of
dissimilar metals. Even
the proximity
of
fumes or liquid acids
an
d alkalies m
ay
react
with the metal parts
of
the circuit
an
d generate slight cur-
ren
ts.
The fingers should not
be
permitted to touch the metal
par
ts
of
the prods or circuit
as
body resistance c
an
also up-
set some circuits.
For
handy operation chart see pages
16
and
17.
500
DC
0
5000
"!(
AC
V
0
p.A
OUT
Q
PUT
OPEN
CIRCUIT
RED
Figure 4- Measuring
DC
Current
13

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14
OPERATION
Measuring
Output
Volts
(DB)
(Fig.
5)
Output
is
generally measured in units called the decibel,
a terminology used
to
indicate power levels in amplifiers or
telephone work.
Do
not confuse the
DB
with the
VU
(Volume
Unit).
The
VU
is
based on
.001
watt dissipated in a
600
ohm line
and
is measured with a meter having special ballistic charac-
teristics.
Rotate the selector switch
to
the appropriate
AC
volt
range
and
set the polarity switch
to
ACV.
Refer
to
the small
chart on the meter dial
for
the range
to
use. Always start
with the highest range
if
in doubt
as
to
the approximate
number
of
decibels.
Normally it is recommended
to
measure output by plug-
ging the black lead into the
COM
jack
and
the red lead
into the
OUTPUT
jack
as
shown in Figure
5.
Oftentimes a
DC
voltage is present in the circuit where
output
is
to
be
measured. The extra jack marked
OUTPUT
with a
.1
mfd
condenser in series is provided
to
block the
DC.
The
condenser impedance is generally disregarded
in
most measurements. Where no
DC
is present, this output
voltage can
be
read
accurately by using the
630-PL
as
a
regular
AC
voltmeter
(i.
e.
by plugging the red lead into the
V-n-A
jack instead
of
OUTPUT.)
Connect the test prods across the plate circuit or speaker
voice
coil.
Read all
DB
ranges on the bottom black scale us
in
g the
small chart on the meter dial. For example, when the selector
switch is set on the 3
AC
volt range, the
DB
scale is direct
rea
ding. When on the
10
AC
volt range,
add
10
to
reading
on the
DB
scale, thus with the meter reading
-2,
the
ap-
proximate
DB
reading
is
+ 8
DB.
For a reference level
of
.
006
watt in
500
ohms, subtract
(+
)7
DB
from
the reading
to
obtain the absolute value
of
decibels.
For
handy operation
chart
see pages
16
and
17.
500
DC
0
5000
:1
ACV
•A-A
0
Jl.A
OUT
Q
PUT
600
OHM
LINE
When using the
5000
AC
voltage range
for
output measurements
ii
i1
necesaary to
::>l
ace
a condenser capable
of
withstandini
this high voltage extemal to the
tuter
and
connected
in
series to the
5000
AC
volt fack
mun
g the
COM
lack to complete the
circuit.
This
e'ICtemal
condenser
is
not a furnished
part
of
the equipment.
Figure
5-Measuring
Output
Volts
(DB)
15

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16
To
Measure
DC
VOLTS
0-.250
0-
2.5
0-10
0-50
0-250
0-
100
0
0-
00
0
AC
VOLTS
0-3
0-
10
0-
50
0-
250
0-
1000
0-
5000
DC
CURRENT
0-
100
Ua
DC
0-10
Ma
DC
0-100
Ma
DC
0-
1000
Ma
DC
0-10
AMPS
DC
OHMS
0-1000
0-
10,000
0-1
Meg
0-100
Meg
DECIBELS
-20
to
+11
-10
to
+21
+4
to
+35
+18
to
+49
+30
to
+61
+44
to
+1s
OPERATION
CHART
Set Switch
To
Selector Polarity
Plug
Red*
Test Lead
In Jack Marked Read
On Each
Scale
Div. Equals
100
p.
A
2.5
DCV
10
DCV
50
DCV
250
DCV
1000/5000
DCV
1000/5000
DCV
3
ACV
10
ACV
50
ACV
250
ACV
1000/5000
ACV
1000
/
5000
ACV
100
µ.a
10
DCMA
100
DCMA
1000
DCMA
10
AMP
nxl
nXlO
nXIK
nXlO0K
3
ACV
10
ACV
50
ACV
250
ACV
1000/5000
ACV
1000/5000
ACV
either
either
either
either
either
either
either
V-n-A
V-n-A
V-n-A
V-n-A
V-n-A
V-n-A
5000
DCV
BLACK
SCALE
0-250
DC---;-1000
0-
250
DC---;-100
0-
10
DCXI
0-
50
DCXl
0-
250
DCXl
0-
10
DCXlO0
0-
50
DCXlO0
0.005
0.05
0.2
1.0
5.0
20
.0
100.0
Vo
lt
Volt
Volt
Volt
Volts
Volts
Volts
- - -
-----
--
---------1--------
ACV
ACV
ACV
ACV
ACV
ACV
either
either
either
either
either
n
n
n
n
ACV
ACV
ACV
ACV
ACV
ACV
V-l-A
V-p-A
V,h-A
V-n-A
V-n-A
5000
ACV
V-n-A
V-n-A
V-n-A
V-n-A
V-n-A
V-n-A
V-n-A
V-n-A
V-n-A
t
O4tput
O1
1J
put
Output
Output
Output
5000
ACV
RED
SCALE
0-3V
ACXl
0-
10
ACXl
0-
50
ACXl
0-
250
ACXl
0-
10
ACXlO0
0-
50
ACXlO0
BLACK
SCALE
0-10
DCXlO
0-
10
DCXl
0-
10
DCXlO
0-10
DCXlO0
0-
10
DCXl
0.
05
0.2
1.0
5.0
20.0
100.00
2.0
0.2
2.0
20
.0
0.2
Volt
Volt
Volt
Volts
Volts
Volts
µ.a
Ma
Ma
Ma
Amp
Each Scale Division
Equals
(in
ohms}
RED
SCALE
I
0-4
I
4-5
I
5-10
I
10-20
I
?.0-50
I
50-200
OX !
OXIO
j .
I I
.2
I
.5
I
1 I
5
I
~-
I 1 I 2 I s I
10
I
so
I
soo
I
100
I
200
I
500
I
lK
I
SK
I
SOK
OXIK
OXIOOK
I
lOK
I
20K
I
SOK
I
IOOK
I
SOOK
I
SMea
BLACK
SCALE
DB
plus
0
DB
plus
10
DB
plus
24
DB
plus
38
DB
plus
50
DB
plus
64
*
Black test lead
plugged in
"COM"
jack
for
all
measurements
17

www.SteamPoweredRadio.Com
18
OPERATION
Measuring Capacity (Fig. 6)
Your 630-PL can be used to measure capacity by the
arrangement shown in Figure
6. It is set up as an AC volt-
meter. See
page 8.
Use the following chart to determine the AC voltage
range
to use. ALWAYS start with the selector switch on the
250 volt range since, if the condenser is shorted, serious
damage may result
to the meter when on a low range.
To
Measure
MFD
.0021
.004 I
.006 ~
.oos I
.010 J
Set
Selector
Switch
to
3 ACV
Deflection
in
AC Volts
f .45
I .83
~ 1.25
I 1.65
t 2.10
CAUTION: Do not attempt to use this test on electrolytic
condensers.
500
DC X
0
5000 ':"(
ACY V·Il:A
0 /lA
OUT Q PUT
IIOV
60~
UNKNOW N
CAPACITOR
.5MFD
Figure 6-Measuring Capacity
19

www.SteamPoweredRadio.Com
20
ADDITIONAL
MEASUREMENTS
Measuring Kilovolts
For measuring the high voltage employed in television receivers
and
in other
applications,
an
external probe is available. See Figure
7.
Probes
for
DC
are
made
in
three
ranges
0-10,000,
0-25,000,
and
0-50,000
volts. Probes
for
AC
are
also available
in
the lower ranges.
To
use
the Kilovolt probe set
range
selector switch on
2.5
volt
DC
position
if
the
DC
probe is to
be
used. When the
AC
probe is
used
set
range
selector
switch on 3 Volt
AC
position
and
set the polarity switch to
ACY.
Pluq the Kilovolt
probe
lead
into the V-0-A jack on bottom riqht
comer
of
the front panel. Use
the black
standard
lead
for
negative or common
lead
with it connected
in
the
COM
jack located on the lower right side
of
front panel.
Kilovolt Set Sele
c-
Probe
tor
Switch
0-IOKV
DC
2.5V
DC
0-25KV
DC
2.5V
DC
0-50KV
DC
2.5V
DC
0-IOKV
AC
3V
AC
0-25KV
AC
3V
AC
Figure 7
Read on
Range
0-IOV
DC
0-250V
DC
0-50V
DC
0-IOV
AC
0-250V
AC
Multiply
by
1000
100
1000
1000
100
USE
EXTREME
CAUTION
in
measuring the high
voltages such
as
found
in television receivers.
Clip
the common lead
to
the circuit
so
you
will have only one
probe
in
your hand.
21
Measuring High
DC
Current
External plug-in shunts
are
available to extend the
DC
current
ranges
of
your
630-PL
from the self-contained
0-10
to
0-25
amps. External portable shunts
up
to
100
amperes
are
also available. (See
paragraph
on accessories.)
Set the
630-PL
selector switch
to
the
10
Ma. position
and
plug the desired external shunt into the COM
and
V-n-A
jacks. Connect the line
to
be
measured to the binding posts
on top
of
the shunts. The external portable shunts
are
too
large to plug into the panel
and
must
be
connected
to
the
panel jacks
by
the leads furnished with the shunts.
Accessories
The following accessories
for
your
630-PL
are
available
from
your distributor.
Item
DC
Hi-Voltage probe
0-10
Kv
AC
Hi-Voltage probe
0-10
Kv
DC
Hi-Voltage probe
0-25
Kv
AC
Hi-Voltage probe
0-25-Kv
DC
Hi-Voltage probe
0-50
Kv
Carrying cases
639,
639-N
and
639-P
Plug-in external shunt
0-25
DC
Amp.
Portable external shunt
0-50
DC
Amp.
Portable external shunt
0-100
DC
Amp.
Clamp-on Ammeter Adapter, Model
10
(Ranges 6 to
300
AC
Amps)
Lead Assembly,
No.
611
(Used in conjunction with Model
10)
Line Separator, Model
101
(Used in conjunction with Model
10)
Part
No.
T-79-83
79-165
T-79
-130
79-166
T-79-92
T-91-243
T-91-244
T-91-191
60A-211
79A-160
60A-218

www.SteamPoweredRadio.Com
22
ADDITIONAL
APPLICATIONS
In
The
Home
When your refrigerator motor fails
to
"kick out" the
starting winding, use the
630-PL,
to
measure the
AC
line
voltage.
If
the voltage
is
below about
100
volts, notify your
power company.
If
your electric stove does not seem
to
heat quickly
enough, measure the voltage input
to
the stove with all
burners turned on
and
again with all burners turned
off.
If
the difference between these two voltages
is
10
or
15
volts,
the power cable
to
the stove has defective connections or
is
not
of
large enough current carrying capacity.
Blown
fuses sometimes do not visibly indicate they are
burned out. With your
630-PL
measure the voltage
ahead
and
behind the
fuse.
Voltage
ahead
of
the fuse but no
voltage following indicates a blown, defective, or loose fuse.
Sometimes
it
is
easier
to
remove the fuse
and
measure its
resistance.
This
should
be
substantially zero.
Your
630-PL
is
handy
for
locating trouble in desk and
floor
lamps. Pull the plug
from
the wall socket
and
check
for
a faulty cord, plug, switch, socket, or bulb
by
measuring
resistance on the nX1 range.
100
watt
120
volt bulbs should
read
10
to
20
ohms.
50
watt
120
volt bulbs should read
20
to
40
ohms.
For
the Radio Man
In
addition
to
all common voltage, current,
and
resist-
ance measurements used in servicing radios, the high sensi-
tivity
of
your
630-PL
is
well adapted
to
measuring
AFC
,
A
VC,
bias,
and
FM
discriminator voltages.
Measurements
of
the high voltage up
to
27,000
volts
D.
C.
used in some television receivers
for
the picture tube can
be
effected with the special high voltage probe shown on
page
20.
Considerable trouble
is
had
with leakage in automobile
radio antennas (due
to
moisture). Your
630-PL
with the
h~gh
ohm range
0-100
meg.
is
ideal
to
check this leakage.
Disconnect the antenna
from
the receiver before making this
check.
High frequency measurements
are
possible since the
23
630-PL
has a wide frequency
response-usable
from
10
cps
to
500
Kc.
In
The Industrial Plant
Your
630-PL
will
be
a big help in checking voltage
drop caused by adding that extra machine on the already
overloaded line. Correcting this
will
often save time later
when a rush comes
and
the line "just happens"
to
burn up.
Measure the voltage
at
the machine
first
with the ma-
chine turned
off
and
again with the machine in operation.
If
the voltage
is
proper with the machine
off
but low with
the machine in operation, the circuit wiring or transformers
have
too
small a capacity.
If
the voltage is low even with
the machine
off,
the circuit
is
probably already overloaded
and
the machine should
be
wired into another circuit.
Equipment using automatic electric controls can
be
checked with the
630-PL.
Faulty relay or control action
is
often caused by low voltage applied
to
the relay or control.
This low voltage in turn, may
be
caused
by
burned or dirty
contacts on the control device.
Use
the
nX
1 range
to
check
for
high or unstable contact resistance.
When a phone on your dial telephone system fails,
measure the line current
and
the voltage
to
the particular
relay in question.
If
the voltage is proper, measure the con-
tact resistance
of
the relay contacts using the
nX
1 scale on
your
630-PL.
If
this resistance
is
over a fraction
of
an
ohm
or
if
the resistance seems
to
waver, clean
and
adjust the
relay contacts.
In
The Garage
Fuses in the automobiles have a tendency
to
look per-
fectly good
and
yet not function due
to
corrosion under the
metal end cap. Measure voltage
ahead
and
behind the fuse
to
determine a defective unit. Or remove the fuse
and
measure its resistance. Anything over a fraction
of
an
ohm
is too high.
.Checking automobile wiring, light switches, heaters,
radios, etc., can be speeded up by simple use
of
your
630-PL.

www.SteamPoweredRadio.Com
In The Laboratory
Your
630-PL
is
built with all
prec1s1on,
non-aging
resistors. The specially designed switch
and
special
banana
type plugs insure lasting accuracy.
The
meter with specially
finished
and
selected pivots
and
jewels
and
a well designed
stable magnet further makes the
630-PL
a must
for
the
laboratory.
Special App
li
ca
ti
ons
The unusually high range ohmmeter in your
630-PL
permits some indication
of
condenser leakage resistance.
Measure
as
a resistor, see
page
10,
using the highest range.
A good paper or mica condenser under 1
mfd.
will indicate
at
the
100
Meg mark or above.
If
a steady reading (taken
after the initial surge required
to
charge the condenser)
of
less than
100
megohms
is
obtained, the condenser probably
has defective insulation. Good paper condensers over 1
mf
d.
may read somewhat less than
100
megohms. Electrolytic
condensers should
read
above
.1
megohm.
In
checking
electrolytic condensers, the black test lead ("com"
ja
ck)
should
be
connected
to
the positive terminal
of
the condense
r.
Checks
of
insulation resistance
for
motors, generators,
telephone cables, power cables, etc., can be made on the
high ohmmeter range
of
your
630-PL.
The actual value of
resistance may vary
from
a
few
megohms
to
over
10
0
me
g,
depending on weather conditions
and
quality
of
insula
ti
on.
The best method, therefore,
is
to
make periodic chec
ks
on
important cables or equipment
an
d observe
th
e tr
end
in
readings.
As
the readings tend
to
be
lower
an
d lower,
it
is
time
to
start drying out the equipment or determine the
cause
of
deterioration.
Dirt,
mi
c
e,
or foreign matter can
sometimes cause excessive
lea
kage.
MAINTENANCE
25
:Ba
tt
ery Replacement
Two
batteries
are
used
for
the ohmmeter circuits, a
1.5
volt Eveready
No.
950
or equivalent
and
a
30
volt Eveready
No.
413
or equivalent.
When the meter pointer can no longer
be
adjusted
to
zero (see
page
10)'
ohms on the nx
1,
nx
10,
or nx
10
00
ranges, replace the
1.5
volt battery.
When the meter pointer can no longer
be
adjusted to
zero ohms on the nx
100,000
range, replace the
30
volt
battery.
To
replace batteries, remove the four screws in the bot-
tom
of
the case
and
lift
panel
from
the case. Simply remove
the old,
and
replace with a new battery being careful
to
observe polarity.
Care
A little precaution in handling
and
caring
for
your
630-PL
can
pay
big dividends in satisfaction. Treat your
tester like you would a
fine
watch.
Avoid placing your tester on a bench where machine
tools
are
used or severe vibration
is
encountered.
Do
not place your
630-PL
near the edge
of
a shelf or
bench where it can easily
be
knocked o
ff.
When possible keep your
630-PL
in a place
of
moder-
ate
temperatures. Avoid places with extreme temperatures
or severe temperature changes.
In
.ise,
don't take chances on overloading the meter.
If
in doubt
as
to
the approximate reading always start with
the highest range.
Get in the habit
of
double checking the position
of
the
switch before making a measurement. The meter
can
be
burned out
by
applying voltage when the switch is set on
the current or ohms scale.
If
th
e unit has not been
in
u
se
for
a long period of time, rotating the switch
in both directions several
time
s will wipe the contacts clean
for
good contact.
Turn the selector switch to OFF when the unit is
to
be
carried. The meter
is
damped in this position
to
prevent wild
swinging
of
the pointe
r.

www.SteamPoweredRadio.Com
26
INTERIOR VIEW
PARTS LOCATION
OHMMETER BATTERY
LOCATION BI
Rl4
XIO OHMS
RIS
XI OHMS
Fl
FUSE
Rl6
XIK OHMS
Rl7
XIO OHMS
RIS
2.5 DCV
Rl9
10 DCV
R2O
50 DCV
R21
250 DCV
R22 R23
10001 DCV
R28
10 OCA
C
R29
OUTPUT 5000 ACV
RANGES
R12
ALL OHMS
R31
LOCATION
ALL OHMS
Figure 7
OHMMETER BATTERY
82
R27
OHMMETER
ZERO ADJ,
RIO
100 DC UA.
R9
10 DC MA.
RS
100 DC MA.
R7
1000 DC MA.
X AC
RECTIFIER
ASSEM.
R5 R6
REdTIFIER
CIRCUIT
R4
10 ACV
R3
50 ACV
R2
250 ACV
RI
1000 ACV
R3O
5000 DCV
Ref. No.
Rl
R2
R3
R4
R6, R6
R7
R8
R9
Rll
RlO
R12
R13
R14
R16
R16
R17
R18
R19
R20
R21
R22}
R23 f
R27
R28
R29
R30
R31
C
B2
Bl
M
X
Sl
s2
Fl
REPLACEABLE PARTS 630-PL 27
DESCRIPTION
Part No. Req,
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resigtor
Resistor
Resistor
Resistor
3.75 Meg.,
1 Meg.,
200K,
35K,
6K,
.25 ohms,
2.5 ohms,
25.12 ohms
423K,
5K,
13.6K,
4690
37.2,
3.7 ohms,
732,
6.5 ohms,
45K,
150K,
SOOK,
4 Meg.,
7.5 Meg.,
±1% , 1 hW, film type T-15-2842
±1%, ½W, film type T-15-1358
±1%, ½W, film type T-15-1061
±1%, ½W, film type T-15-2843
±1%, ½W, film type T-15-1009
±1 %, Wire type T-16-1528
±1 %, Wire type T-15-1976
± 1% Wire type
15-2850
±1 %, ½W, film type T-16-4120
±1 %, ½ W, film type T-16-1009
±1
%, film type T-15-1768
±1%, ½W, film type
15-4118
±1%, ½W, film type T-15-4116
±1%, Wire type T-15-3223
±1 %, ½ W, film type T-15-4119
±1 %, Wire type T-15-4117
±1 %, ½ W, film type T-15-1060
±1
%, ½ W, film type T-15-1763
±1%, ½W, film type T-15-1137
±1%,
1
hW film type T-16-1138
±1 %, ½ W, film type T-15-1262
Resistor
20K, ±20%, Variable
16-31
(with mtg. nuts & knob)
Shunt Assem.
10 Amp
Resistor
20 Meg.,
Resistor
60 Meg.,
Resistor
5100,
Capacitor .1 mfd., 400WV
±1%, 2W
±1%, 2W
±5%, ½W
Battery 1.5 Burgess No. 2, NEDA No. 13
Battery 30V, Burgess, U20E, Eveready 413,
or NEDA No. 210
Meter 60 Micro-Amps, 250 Millivolts
Rectifier assembly
Switch
20 Pos., 3 deck, without resistors
Switch
20 pos., 3 deck, with resistors
Switch Slide, DPDT (Wirt SW726)
Knob Scarlet, 2 5/16 long with clip
Case with handle
Jack contact
Clip shunt
retainin_g- No. C2416-012-27
Bumper rubber
Leads Banana Type
Front Clear plastic with zero adj.
Fuse 1 Amp. Littlefuse,
3AG, 312001
90A-449
15-1674
15-2844
15-1411
T-43-69
f Available
} Locally
52-1294
2250A 30
22A 319
22-320
T-22-152
34 B-62
T-10-784
8944
T-2451-6
T-3236-10
T-79-127
T-10-1225
3207-15

www.SteamPoweredRadio.Com
28
CIRCUIT
DIAGRAM
1123
0 0
0 0
0
O 0
0 0
0
0
0
. o
nu.A.
•
630
•,
Pl
SPECIAL
1121
DC
5000
AC
V-A-A
COM
11000
1000
250
110
10
2.11
XI
XIO
)CIK
XIOOK
D
C
V
0
M
M
s
100
)
~
100
~
,o
l
1000
10
)
A
0 3
0
10
050
o
2110
0
1000
11000
0,,
A
C
V
RES
I
STORS
R58R6
ARE
PART
OF
RECTIFIER
CIRCUIT
BUT
MOUNTED
ON
SWITCH
Figure
8-Circuit
Diagram
DATA
29
DB
CHART
0
DB
at
1
Mw
RMS
Volts with
Decibels with Line Power line Imped.
of
500
ohm line
Mw
600
ohms
-20
.01
.
0775
-10
.l .
245
-5
.
316
.436
0
1.00
.775
+10
10
.0
2.45
+
15
31.6
4.36
+
20
100
7.75
+
30
1000
24
.5
+
40
10,000
7'1.5
+
so
100,000
245.
+
60
1,000,000
775
.
+
70
10,000,000
2450
Note:
The range
of
audibility can
be
considered
to
lie
from
70
db
below the normal speech level
to
70
db
above the
same level, or a total range
of
140
db
.

www.SteamPoweredRadio.Com
30
DATA
EIA MICA
CONDENSER
COLOR
CODE
MOLDED
PAPER
MOLDED
MICA
CERAMIC
Color
Multiplier
Tolerance
Mult
iplier Tolerance
Multipler
Tolerance
Black
I
20%
I
20%
l
20%
or 2.
0µµfd
.•
Brown
10
10
10
l
o/c
Red
100 100
20%
EIA
100
2i
Orange
1000 1000
3%
EIA
1000
2.
%
EIA
Yellow
10
,
000
5%
10
,
000
10
,
000
or 0.5µµfd .•
Green
5%
EIA
5%
Blue
Violet
0.01
0.25µµld
.•
Gray
1001,
0
.1
10%
or
l.0µµfd .•
White
Gold
0.1 0.1
Silver
So/co
10%
0.01
5%
(J
AN)
10%
•
Capacitance
None
20%
less than
lOµµfd
.
MOLDED
PAPER
M
OLDED
MICA
CE"RAM
IC
TUBULAR
.!!!!!.!..
.!.£Q!.
~
6
COLOR
RAOIAL
LCAO
@aonoe
0
,1~1
1
~I
r
~
8LACK
A B
-mJ}
l
JABCO
.aecD
EF
0
5
COLOR
~AOIAL
LEAO
FLAT
JAlf
TYPE
G D C G D C
@aaoa
0
~
SUTTON
SILVER
M
IC
A
~-
H
ABC
D
G e 5
COLOR
AXIAL
LEA
D
0 -
m~n~
~
G O C C
3•dOIGIT
FLAT
COM
1
L.
TYPES
OBSO
LETE
RMA
SYSTEMS
HA
II
CO
5
COLOR
STANO-OFF
BLACK
BODY
E A B
3r
d0tGIT
~
~
~
6rfm}
AB
C
DOT
o o
O
iW
ABC
H4
8
CD
E OC .
~
SCOLOR
3
COLOR
A 8
C
4w
0
DI
SC
D
ISC
[
DOT~
SLANI(
FRONT
"~
8
-{c
oo9>~
]
A
8
C
ED
REAR
'O'
o~~
~
-B-
E 0
A 8
C 0 A
8
C A
BC,
(Courtesy Popular Electronics)
Ca}Xlcitance is given in
µµId
.
Colors-$ame
value
as
on resistors except
as
indicated in tables.
C
OLORS
INDICATES
A Brat
iligit
B Second dig
it
C Multiplier
D Tolerance
E
&
F Voltage Rating in hundreds
of
volts
((E) Rati!}gs less than
1000
volts.
(E)
&
(F) F
ira
t two digits
of
ratings
lCXXJ
volts
or more. Values
of
colors for
(E) &
(F)
are
same
as
in resistance values.
(q)
ii
class or characteristics
of
caJXJcitor. (H).
(I)
& (J)
give temperature coefficient.
(G), (H). (I)
& (J)
are
not listed in the tables.]
Color
Black
Brown
Red
Oranqe
Yellow
3reen
Blue
Example:
DATA
31
EIA
RESISTOR
COLOR
CODE
A
8 C 0
Color
A
B
C
D
Number
0
I
2
3
4
5
6
8
A C
Indicates
First number
Second number
Number
of
zeros
Tolerance
Color
Violet
Gray
White
Gold
Silver
None
Number
7
8
9
5°1,,
tolerance
10°1,,
tolerance
20°/,,
tolerance
The resu)tinq
value
is in ohms.
A
250
,
000
ohm
200/n
resistor.
A red B
green
C yellow D no color
EIA
SPEAKER
COLOR CODE
Voic
-
Co
il:
Gr;,en-fin
ish
Black-start
Field Coils:
Black
and
red-start
Yellow
and
red-finish
Slate
and
red-tap
(if
any)
EIA WIRING COLOR CODE
B+
Ground
Plate
Grid
Cathode
High Heater
Low
Heater
Screen Grid
AVC
Red
Black
Blue
Green
Yellow
Brown
-Black
Orange
White

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32
DATA
EIA
TRANSFORMER
COLOR
CODE
I.
F.
Transformers:
Blue
-plate lead
Red
-"
B"
+lead
Green
-g
rid (or diode) lead
Black
-grid (or diode) return
NOTE:
If the secondary
of
the
i.
f.
t.
is
center-tapped, the
second diode plate lead
is
green-and-black striped,
and
black
is
used
for
the center-tap lead.
Power
Transformers:
1.
Primary Leads
....
Black
If tapped:
Common
....
.
....
Black
Tap-Black
and
Yellow
Striped Fin
ish-Black
and
Red
Striped
2. High-Voltage Plate Wind-
ing . .
..............
Red
Center-Tap -
Red
and
Yellow Striped
3.
Rectifier
Fil.
Winding
...
Yellow
Center-Tap-Yellow
and
Blue
Striped
4.
Fil.
Winding
No
.
I.
Green
Center-Tap -Green
and
Yellow Striped
5.
Fil.
Winding
No
.
2.
Brown
Center-Tap-
Brown
and
Yellow Striped
6.
Fil.
Winding
No.
3.
Slate
Center-Tap -Slate
are
Yellow Striped
A.
F.
Transformers:
Blue-plate
(finish) lead
of
primary
Red
-"
B"
+ lead (this ap-
plies whether the primary
is
plain or center-tapped).
Brown
-plate (start) lead on
center tapped primaries
(Blue
may
be
used
for
this lead if polarity
is
not
important.)
Green-grid
(finish)
lead to
secondary
Black
-g
rid return (this ap-
plies whether the second-
ary
is
plain or center-
tapped
.)
Yellow-grid (start) lead on
center tapped second-
aries. (Green may
be
used
for
this lead
if
polarity is
not important.)
Note:
These marking
ap-
ply also
to
line-to-grid,
and
tube-to-line transformers.

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