Publication Date: June 1984
Document Number: 130A-901-01C
Page 2
WARRANTY
Keithley Instruments, Inc. warrants this product to be free from defects in
material and workmanship for a period of
ment. During the warranty period, we will, at our option, either repair or
replace any product that proves to be defective.
To exercise this warranty, write or call your local Keithley representative,
or contact Keithley headquarters in Cleveland, Ohio.
prompt assistance and return instructions. Send the instrument,
transportation prepaid, to the indicated service facility. Repairs will be
made and the instrument returned, transportation prepaid. Repaired
products are warranted for the balance of the original warranty period, or
at least
This warranty does not apply to defects resulting from unauthorized
modification or misuse of any product or part. This warranty also does
not apply to fuses, batteries, or damage from battery leakage.
This warranty is in lieu of all other warranties, expressed or implied, including any implied warranty of merchantability or fitness for a particular
or consequential damages.
90
days.
LIMITATION
use. Keithley Instruments, Inc. shall not be liable for any indirect, special
OF
two
years from date
WARRANTY
You
will be given
of
ship-
STATEMENT
This instrument has been inspected and tested in accordance
specifications published by Keithley Instruments, Inc.
The accuracy and calibration
National Bureau of Standards through equipment which is calibrated at
planned intervals by comparison to certified standards maintained in the
Laboratories
of
Keithley Instruments, Inc.
OF
CALIBRATION
of
this instrument are traceable to the
with
Page 3
S
P
E
C
I F I
CAT1
0
N
S
DC
VOLTS
ACCURACY (2 YEARS)
RANGE RESOLUTION 1E0-2E0C
200mV 100
2v 1 mV
20
v
200
v
1000
v
pv
10mV +(0.25% + 11
100mV
1v
+(%rdg + counts)
MAXIMUM ALLOWABLE INPUT: 1OOOV
750V
peak switched.
INPUT RESISTANCE: 10MR.
NORMAL MODE REJECTION RATIO:
COMMON MODE REJECTION RATIO:
and
6OHz
(1kQ
unbalance].
AC
VOLTS
ACCURACY (2 YEARS)"
f
RANGE RESOLUTION 1Eo-28OC RANGE
200mV 100
2v 1 mV
20
v
200
v
750 V 1v
MAXIMUM ALLOWABLE INPUT: lOOOV
switched: continuous except
INPUT IMPEDANCE: 10MQ
RESPONSE:
*Above
10
pv
10mV +(l% + 31 45Hz-500Hz
100mV
Average responding, calibrated in rms
counts.
(Yordg + counts) FREQUENCY
200mV
shunted by less than
DC or peak AC non-switched,
Greater than
Greater than
peak non-switched,
range:
15s
max above
46dB
lOOdB
1OOpF.
of
a sine wave.
at
50Hz, 60Hz.
at DC,
300V.
750V
50Hz
peak
OHMS
ACCURACY (2 YEARS)
f
RANGE RESOLUTION 1Eo-2E0C VOLTAGE
200
2
20
200
20MR
n
kQ
kn
kfl
lOOmn i(O.5% + 4)
1n
10
n
100
n
10
kfl
Wrdg + counts) FULL SCALE
<
*
(0.2% + 11
f
(0.2%
f
(0.2%
+(2
% + 11
+
+
1)
1)
<
>
>
>
0.5V
0.5V
0.7V
0.7V
0.7V
Page 4
MAXIMUM OPEN CIRCUIT VOLTAGE:
MAXIMUM ALLOWABLE INPUT:
1.5V.
300V DC
or rrns.
DC AMPS
MAXIMUM
ACCURACY (2 YEARS)
15s
k(%rdg
rnA
input:
unfused.
RANGE RESOLUTION 18"-28'C
1
2rnA
20rnA
200rnA
2000rnA 1
10 A 10rnA
OVERLOAD PROTECTION:
ble;
10A
PA *(0.75% + 1)
10 pA +(0.75% + 1)
100pA :(0.75% + 1)
rnA
input:
20A
for
+
*(2%
*(2% + 1)
2A
counts)
+
fuse
1)
(250V),
FULL SCALE
VOLTAGE
BURDEN
0.25V
0.25V
0.25V
0.7 V
0.3 V
externally accessi-
AC AMPS
ACCURACY (2 YEARS)' MAXIMUM
*(%rdg
RANGE RESOLUTION (45HZ-500H~) BURDEN
1
2rnA
20mA
200rnA
2000rnA
10
A 10rnA +(3% + 5) 0.3 V
PA
10 pA
100pA
1
rnA
+
counts) FULL SCALE
18O-28'C VOLTAGE
*(2% + 2)
*(2%
+
+
2)
2)
f(2%
+(3% + 5) 0.7 V
0.25V
0.25V
0.25V
OVERLOAD PROTECTION:
10A
input
10
counts.
20A
ble;
*Above
for
15s
rnA
input:
unfused.
2A
GENERAL
DISPLAY:
OVERRANGE INDICATION:
MAXIMUM COMMON MODE VOLTAGE:
OPERATING ENVIRONMENT:
ity
STORAGE ENVIRONMENT:
TEMPERATURE COEFFICIENT:
0.1
POWER:
BAlTERY LIFE:
alkaline cells.
3%
digit
LCD,
0.6'
height, with polarity and range indication.
3
least significant digits blanked.
Oo
up
to
35OC,
linearly derate
x
applicable accuracy specification per
9V
alkaline or carbon-zinc battery
100
hours typical with carbon-zinc cells,
to
3% RH/OC
-35OC
(Oo
5OOC;
to
6OOC.
to 18% and 28O to 50°C):
fuse
(250V),
500V
peak.
less than
from
OC.
(NEDA 1604).
35OC
80%
to
externally accessi-
relative humid-
5OOC.
Less than
200
hours with
Page 5
BAlTERY INDICATOR:
remains.
DIMENSIONS, WEIGHT:
x
3.1" x 1.6')). Net weigth 283gm
ACCESSORIES SUPPLIED:
Diplay indicates
178mm long x 78mm wide x 42mm thick
BAT
when
less
than 10%
(10
Batten/, test leads and operating instructions.
02.).
of
life
(7.0'
TABLE
General Information
ManualAddenda
Optional Accessories
Preparation for Use
Battery
Installation/Replacement
Safety Symbols and Terms
Safety Precautions
The Model 130A Digital Multimeter is supplied ready for use with a battery. Descriptions of other available accessories, and other general information concerning the instrument can be found below.
MANUAL ADDENDA
Information contained in this manual is believed to be accurate at the
time of printing. Any improvements or changes to this manual will be
documented in an addendum which will be included with the, instrument.
OPTIONAL ACCESSORIES
Model 1301 Temperature Probe
probe designed to allow precision temperature measurement from
-55OC to 150OC.
is a rugged low cost temperature
Model 1304 Soft Carrying Case and Stand
Model 1306 Deluxe Case
enough to accomodate the Model 130A plus various other DMM articles
such as a spare battery, test leads, etc.
Model 1309 Spare Parts Kit
to maintain up to ten Model 130A DMMs for one year.
Model 1600A High Voltage Probe
1OOO:l division ratio, which means that 1V on the DMM corresponds to
1 kV.
Model 1651 50-Ampere Shunt
made up to 50-amperes.
DMM is set to the 2V range, a 50-ampere current will correspond to
50mV (.0500V).
Model 1681 Clip-On Test Lead Set
es) long, terminated with banana plug and spring action clip-on probe.
Model 1682A
250MHz.
RF
Probe
Model 1683 Universal Test Lead Kit
(48 inches) long with 12 screw-in tips,
lugs,
two
four heavy-duty tip plugs.
alligator clips with boots,
is a rugged DMM carrying case that is large
is a collection of specially selected parts
extends the DMM to 40kV.
allows current measurements to be
It
is a 0.0010 1 % Cterminal shunt. When the
contains
allows voltage measurements from 100kHz to
two
two
leads, 1.2m(48 inch-
consists of
two
needle tips with chucks and
two
test leads, 1.2177
banana plugs,
two
It
has a
spade
1
Page 7
Model 1685 Clamp-On AC Current Probe
clamping onto
a
single conductor. Interruption of the current path
measures AC current by
is
unnecessary. The Model 1685 detects current by sensing magnetic field
produced by current.
Model 1691 General Purpose Test Lead Set
consists of
two
.91m (36
inches) test leads with probe tips terminated in banana plugs.
PREPARATION
Carefully unpack the Model 130A from
FOR
USE
its
shipping carton and inspect
for any obvious signs of physical damage. Report any damage to the
shipping agent
at
once. The following items are included with every
Model 130A shipment.
1.
Model 130A DMM
2.
Model 130A Instruction Manual
3. 9V Battery NEDA 1604
4.
Test Leads
5. Accessories
The battery
as
ordered.
BATTERY
is
accessible from the bottom of the instrument. Note the
INSTALLATION/REPLACEMENT
precautions on the case before installing or replacing the battery.
Turn the Model 130A off and disconnect test
leads before replacing the battery. Put the cover
back into place on the compartment before
resuming use of the instrument.
WARNING
A 9V battery is supplied with the instrument but not installed. To install
or replace the battery, remove the cover from the battery compartment
it
by sliding
cover. The battery connector snaps on and
off in the direction of the arrow located on the battery
off
the terminal of the battery. Improper installation of the battery will cause the connecting wires
to be severed by excess strain. Proper installation requires that the battery be positioned in such a manner
(see
drawing) that the leads protruding from the boot of the battery connector face toward the outside
of the battery compartment.
If
the instrument is going to be stored for a
long period of time or in a high temperature environment, remove the
battery to prevent leakage damage.
2
Page 8
R103
Figure
1.
Battery
SAFETY SYMBOLS AND TERMS
Installation
The symbol
to the operating instructions.
The symbol
present on the terminal(s).
The
WARNING
in personal injury or death.
The
CAUTION
the instrument.
A
on the instrument denotes that the user should refer
r/
on the instrument denotes that up to
used in this manual explains dangers that could result
used in this manual explains hazards that could damage
lOOOV
may be
3
Page 9
SAFETY
The following safety precautions should be observed before operating
the Model 130A
1.
This instrument is intended for use by qualified personnel who
recognize shock hazards and are familiar with the safety precautions
required to avoid possible injury. Read over the manual carefully
before operating this instrument.
2.
Exercise extreme caution when a shock hazard is present at the instrument's input. The American National Standards Institute (ANSI)
states that a shock hazard exists when voltage levels greater than
30V rms or
pect that
before measuring.
3.
Inspect the test leads for possible wear, cracks or breaks before each
use. If any defects are found, replace with test leads that have the
same measure of safety as those supplied with the instrument.
4.
For optimum safety do not touch the test leads or the instrument
while power is applied to the circuit under test. Turn the power
and discharge all capacitors, before connecting or disconnecting the
instrument.
5.
Do
not touch any objects which could provide a current path to the
common side of the circuit under test or power line (earth) ground.
Always make measurements with dry hands while standing on a dry,
insulated surface, capable of withstanding the voltage being
measured.
6.
Exercise extreme safety when testing high energy power circuits (AC
line of mains, etc.). Refer to the operation section.
7.
Do
not exceed the instrument's maximum allowable input as defined
in the specifications and operation section.
DMM.
42.4V
peak are present. A good safety practice is to ex-
a
hazardous voltage is present in any unknown circuit
PRECAUTIONS
off
4
Page 10
OPERATION
The following paragraphs contain information concerning basic operation of the Model
reviewed before attempting to operate the Model 130A.
130A. It is recommended that this information be
Low Battery Indicator
Minus sign indicates negative
values. Plus sign implied. An over
range condition is indicated by
followed by a blank display.
‘SET
fl
-INPUTS-Selects appropriate pair
POWER
located on side of instrument).
ELECT FUNCTION AND
RANGE
DCV-20OmV, 2V, 20V, 200V or
ooov
1
ACV-200mV, 2V, 20V, 200V, or
1
ooov
NOTE:
allowable AC input.
DCA-2mA, 20mA, 200mA,
2000mA
ACA-2mA, 20mA, 200mA,
2000mA or 10A
0-2003, 2k0, 20k0, 200kR or
20M0
of input jacks.
COM, V-0-for
resistance measurements.
COM, mA-for current measure-
ments up to 2000mA.
10A, COM, 10A, HI-for current
measurements up
ON (slide switch
750VAC
or 10A
all
voltage and
is
to
a
maximum
10A.
“1“
Figure
2.
Front Panel Controls
WARNING
Do not apply more than
ground to the
COM
input jack.
500V
peak above earth
5
Page 11
Do not under any circumstance, use the
COM
or
jack for making measurements. This is
10A HI
and
will
damage the instrument.
input jacks
with
the
COM
a
10A
input
short
SAFETY PRECAUTIONS FOR HIGH ENERGY CIRCUITS
CAUTION
To
optimize safety when measuring voltage in high energy distribution
circuits, read and use the directions in the following warning.
WARNING
Dangerous arcs of an explosive nature in a high
energy circuit can cause severe personal injury or
death.
If
circuit, when set to
resistance range or any other low impedance
range, the circuit is virtually shorted. Dangerous
arcing can result even when the meter is set to a
voltage range
reduced.
When making measurements in high energy circuits use test leads that
meet the following requirements:
1.
Test leads should be fully insulated.
2.
Only use
alligator or spade plugs) for a hands-off measurement.
3.
Use test leads that do not reduce the
the voltage spacing.
the meter
test
leads than can be connected to the circuit (e.g.
is
connected to a high energy
a
current range, low
if
the minimum safety spacing is
arc
protection by decreasing
Use the following sequence when testing power circuits:
1.
De-energize the circuit using the regular installed connect-
disconnect device such
2.
Attach the test leads to the circuit under
rated leads for this application.
3.
Set the DMM to thg proper function and range.
4.
Energize the circuit using the installed connect-disconnect device
and make measurements without disconnecting the DMM.
5.
De-energize the circuit using the installed connect-disconnect
device.
6.
Disconnct the test leads from the circuit under test.
6
as
the circuit breaker, main switch, etc.
test.
Use appropriate safety
Page 12
SERVICING
This section contains servicing information for the Model 130A.
INFORMATION
All service information is intended for qualified
electronic maintenance personnel only.
FUSE CHECK
With the instrument set to the 2kQ range, connect a jumper from the
V-Q
jack to the mA jack. The display should read approximately
An overrange display would typically indicate a blown fuse. A display
reading other than approximately .lo0 could indicate a defective current
input circuit
FUSE REPLACEMENT
A 2-amp fuse protects the 2mA through 2000mA current ranges. To
gain access to the fuse, remove the fuse Compartment cover in the
same manner as removing the battery compartment cover.
Remove the fuse by pulling outward on the plastic tab that encircles the
fuse body. Install the plastic tab on the new fuse and snap the fuse back
into the fuse holder.
instrument damage that is not covered by the warranty may occur.
DIODE TEST
(see
schematic).
Turn
off the Model
leads before replacing the fuse. Reinstall fuse
compartment cover before attempting to
operate the instrument.
WARNING
WARNING
130A
and disconnect the test
Do
not replace the fuse with a higher rated value or
.loo.
The 20kQ range can be used for testing of semiconductor junctions. A
junction
reading when the semiconductor is reversed biased, and an on-range
reading, when the semiconductor is forward biased. (The
positive).
is
probably good if the Model 130A indicates an overrange
V-fl
jack is
7
Page 13
DISASSEMBLY
INSTRUCTIONS
Place the unit face down on a bench or other similar surface and remove
the battery compartment cover. Disconnect and remove the battery.
Remove the two
#4-40 X 7/8
retaining screws.
Grasp the bottom cover
at
the input jack end and with a lifting and forward pushing motion (see drawing), carefully remove the bottom cover.
While removing the cover, feed the battery connector through the
ac-
cess hole in the bottom of the battery compartment.
PC
board
is
The component side of the
now exposed and the battery
can be reconnected for troubleshooting. To read the display, some light
downward pressure
at
the top of the circuit board may be required in
order to make contact through the elastomer contact strip between the
circuit board and the LCD.
are
The PC board and LCD assembly
ing screws are removed. Be careful not
not secured once the case retain-
to
allow the PC board and LCD
assembly to fall out or shift out of position during calibration.
To remove the PC board from the top cover, grasp the function switch
assembly and
cover. The PC board can now be removed using
lift
until the input jacks become disengaged from the
a
slight clockwise mo-
tion to free the two switch knobs from their normal positions in the
case.
The LCD assembly will remain in the top cover when the PC board
removed. Again, be careful not to allow the LCD assembly to fall out
ac-
cidentally.
The two switch knobs and bushings can be removed from the PC board
assembly by simply pulling them off the switch shafts.
The LCD assembly, along with the zebra strip connector, lifts out of the
case.
is
To
reassemble the Model
130A,
remove the cover on the fuse cornpart-
ment (to position fuse pulling tab) and reverse the above procedures.
Be sure to replace the on-off switch cover. Common-mode voltage will
be present on the switch, creating
a
possible hazard if the cover is not
replaced.
8
Page 14
PUSH
FORWARD
TOP
Figure
CASE
3.
Rear
Panel
Removal
1
t
!
c--
,I
II
II
LIFT
Figure
4.
Model
130A
Exploded
View
9
Page 15
CALI BRATION
Calibration should be performed every
strument
at
humidity of less than
Equipment Needed: + 190mV DC voltage source with
or
Model 130A Settings: DCV function, 200mV range, V-s2 and COM input
jacks.
is
an
known to be out of specification. Calibration should
ambient temperature of 23O f3OC
80%.
better.
two
years or whenever the in-
(77O
f5OF), with a relative
-05%
be
done
accuracy
CALIBRATION PROCEDURE
Remove the battery cover to gain access to the calibration pot R103
Figure
1).
Apply
the
+
a
display reading of 190.0 f 1
for
ed
to calibrate the instrument. Calibration should be performed every
Resistor, 4.72k0, .l%, 1/1OW, MtF
Resistor, 10k0, ,l%, l/lOW, MtF
Thick Film Resistor Network
Resistor, 0.010, 0.5%, lW,
NOT USED
NOT USED
NOT USED
Resistor, 9M0,
Thick Film Resistor Network