Triplett 9310-A User manual

1 Triplett Model 9310-A
CONTENTS PAGE
1. Introduction 1
2. Safety Rules and Warnings 2 - 7
3. International Symbols 8
4. Product Features 8
5. Specifications 9 - 11
6. Front and Rear Panels, Display Details 12 - 17
7. Preparation for Use 18 - 19
8. General Measurement Procedures 20 - 21
9. Specific Measurement Procedures 22 - 31
AC & DC Voltage 22 - 24
AC & DC Current 24 - 25
Resistance 26 - 27
Diode 28
Continuity 28 - 29
Capacitance 29 - 30
Frequency & Duty Cycle 30 - 31
Temperature 31
10. Maintenance 32
11. Accessories 33
12. Warranty 34
1: INTRODUCTION
The Triplett Model 9310-A is a 3 3/4 digit, handheld, battery operated, autoranging
Clamp-On Ammeter and Multi-tester. It performs the basic electrical measure-
ments required by the homeowner as well as advanced measurements useful to
the professional electrician. It measures AC and DC Voltage, AC and DC Current,
and Resistance (Ohms). It also has a Diode Test function, and a Continuity Beeper.
Advanced functions include the measurement of Capacitance, Frequency, and Tem-
perature. A backlit LCD display makes the meter useful in areas with poor lighting
and convenience features like Data Hold and Auto Power Off add to the useful-
ness of the product. Overload protection makes the meter resistant to damage
from accidental overloads.
84-857
12/04
Triplett Model 9310-A
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

2 Triplett Model 9310-A
2: SAFETY RULES & WARNINGS
2.1 Read all instructions in this manual before using this meter. Failure to do so
may result in damage to the meter or injury to the user.
2.2 Prior to using the meter in any situation which could result in injury to the
user, in order to verify that the meter is functional and producing a valid
reading, test the meter on a circuit(s) known to have potentials equivalent to
the potential that is to be measured. For example, before using the meter to
determine if an AC power line is energized with 120VAC, test the meter on a
line known to be energized with 120VAC. Failure to do so may result in
damage to the meter or injury to the user.
2.3 Do not use this meter with its case open, or with parts removed. Doing so
may damage the meter and/or injure the user.
2.4 When using this meter in schools and workshops, responsible teachers or
skilled personnel must control the usage of this meter. Failure to observe this
precaution may result in damage to the meter or injury to the user.
2.5 Follow the recommendations of any Trade Organizations or Regulatory
Agencies whose scope encompasses the use of this meter. Failure to do so
may result in damage to the meter or injury to the user.
2.6 Do not open this meter for maintenance without first disconnecting the test
leads from all external circuitry. Failure to observe this precaution may result
in damage to the meter or injury to the user.
2.7 Repairs and maintenance must only be carried out by qualified service
personnel or qualified electricians / technicians who know the dangers of,
and the safety rules applicable to this type of equipment. Failure to observe
this precaution may result in damage to the meter or injury to the user.
2.8 Always set the meter to the appropriate range or mode before connecting it
to the circuitry to be tested. Failure to observe this precaution may result in
damage to the meter or injury to the user.
2.9 Check the condition of the test leads before making a measurement. Do not
use the test leads if there is damaged insulation or exposed metal. Failure
to observe this precaution may result in damage to the meter or injury to
the user.

3 Triplett Model 9310-A
2.10 Make sure test leads are properly inserted and seated in the meter’s input
jacks. A loose test lead may cause the user to believe that no hazard exists,
when in fact, dangerous voltages or currents may be present. Failure to
observe this precaution may result in damage to the meter or injury to
the user.
2.11 Do not touch the tips of the test leads when making a measurement. Do not
touch live circuitry when making a measurement. Failure to observe this
precaution may result in damage to the meter or injury to the user.
2.12 Before using the meter, examine both the meter and the test leads for
damage. Do not use the meter if damage (damaged insulation, exposed
metal, cracked case, burnt smell, etc.) is evident. Failure to observe this
precaution may result in damage to the meter or injury to the user.
2.13 Insert the test leads in the jacks specified in the instructions for performing
particular tests. Inserting the test leads in incorrect jacks can damage the
meter and/or injure the user.
2.14 Do not exceed the maximum voltage or current limitations of the meter
(see product specifications). Doing so may damage the meter and/or
injure the user.
2.15 Do not apply voltage or current to the input of the meter when it is set to any
of the Ohms
Ω ranges. Doing so may damage the meter and/or injure
the user.
2.16 Do not apply voltage or current to the input of the meter when it is set to the
Diode Test or Continuity Beeper modes. Doing so may damage
the meter and/or injure the user.
2.17 Do not apply voltage or current to the input of the meter when it is set to the
Capacitance mode. Doing so may damage the meter and/or injure
the user.
2.18 Do not apply voltage or current to the input of the meter when it is set to the
Temperature measurement mode. Doing so may damage the meter and/or
injure the user.
2.19 Do not attempt to measure current on bare conductors that are elevated
above earth ground by more than 600V AC.

4 Triplett Model 9310-A
2.20 Do not rotate the Function switch with the test leads connected to the
circuitry to be tested. Doing so may damage the meter or the circuitry,
and/or injure the user.
2.21 For maximum safety, turn the equipment or voltage source off before
connecting the test leads. Make certain that no capacitors in the circuit
being tested remain charged to a high voltage. Set the Meter to the
appropriate AC or DC Voltage range. If the voltage is unknown, set the
Meter to the highest range. Re-apply power and observe the meter reading.
2.22 Do not apply voltages to the input of the meter which are elevated above the
earth ground potential by more than 600V AC/DC. Doing so may damage
the meter and/or injure the user.
2.23 Do not continue to use meter when the “low battery” symbol
+
_
is
displayed. The displayed reading may be in error and lead the user to
believe that no hazard exists, when in fact, dangerous voltages or currents
may be present. Failure to observe this precaution may result in damage to
the meter or injury to the user.
2.24 Use caution when working with voltages above 25 volts AC or 35 volts DC.
Such voltages may cause a life threatening electrical shock.
2.25 This meter is not for use by children. Failure to observe this precaution may
result in damage to the meter or injury to the user.
2.26 Do not use this meter to make measurements in adverse environments such
as rain, snow, fog, or locations with steam, explosive gases or dusts.
Doing so may damage the meter and/or injure the user.
2.27 Do not use meter in condensing atmospheres. That is, do not use meter in
conditions where ambient temperature and humidity could cause condensa-
tion of water inside of meter. Doing so may cause injury to the user.
2.28 Do not use the meter if either the meter or the test leads are wet, either from
exposure to the weather, or after cleaning the case of the meter. Doing so
may cause injury to the user.
2.29 Do not attempt immediate use of the meter when bringing it from a cold
environment to a warm environment. Condensation of water, inside and
outside of the meter, may produce dangerous measuring conditions. Allow
the meter to warm to room temperature before using. Failure to observe
this precaution may result in damage to the meter or injury to the user.

5 Triplett Model 9310-A
2.30 Do not modify the meter. Changing the design may make the meter unsafe
and may result in injury to the user.
2.31 Use caution when attempting to evaluate if a dangerous voltage is present.
The meter will not read AC voltage if it is set to DC, nor will it read DC if it
is set to AC. For example, if the meter is set to 400VDC, it will not measure
a dangerous AC voltage, even if the probes are inserted into a household
AC wall outlet.
2.32 Do not touch the metallic portion of one test lead if the other test lead is
connected to a live circuit. The current from the live circuit may pass
through the meter and appear on the unconnected test lead. Failure to
observe this warning may result in user injury.
2.33 Do not attempt to use meter when no display is present on LCD. Doing so
may damage the meter and/or injure the user.
2.34 Use caution when measuring circuits containing capacitors. Capacitors can
store dangerous or lethal levels of electricity, even when the circuitry which
they are in has been disconnected from its power source. Some capacitors
could source enough energy to damage the meter and/or injure the user.
2.35 Use caution when using this meter to measure voltages in industrial appli-
cations where the High Energy circuitry is used. High Energy circuitry is
usually regarded as any circuitry capable of supplying over 4000 watts to a
load before a safety device (like a fuse) interrupts the circuit. For maximum
safety, use of Lineman’s Gloves conforming to ASTM D120 is recommended.
See product specifications for Category III statement.
2.36 Do not attempt to test charged capacitors. Only discharged capacitors may
be tested. If you wish to test a capacitor, discharge it using an approved
method before connecting it to the meter. Caution: Some capacitors
can store dangerous lethal charges. Discharging these capacitors can be
dangerous unless an approved method is used. Failure to observe this pre-
caution may result in damage to the meter or injury to the user.
2.37 When you use the meter to check a high-voltage circuit, do not try to
connect both test leads at once. Instead, clip one probe to the neutral
or ground lead of the circuit (usually a bare, green, or white wire in AC
wiring circuits) using the insulated slip-on Alligator Clips. Then probe
for voltages with the other test lead. This helps prevent you from
accidentally touching a hot wire, since you need to concentrate on only
one test lead. Failure to observe this precaution may result in damage to
the meter or injury to the user.

6 Triplett Model 9310-A
2.38 If there is any doubt about the condition of the meter (i.e. safe vs unsafe),
remove the meter from service and secure it in a location that will prevent
its unintentional use. Failure to observe this precaution may result in
damage to the meter or injury to the user.
2.39 Do not use the meter if it does not appear to work correctly on all ranges and
in all modes. Failure to observe this precaution may result in damage to
the meter or injury to the user.
2.40 Do not use the meter if it has undergone long-term storage under unfavor-
able conditions. Failure to observe this precaution may result in damage to
the meter or injury to the user.
2.41 Do not use the meter if it may have been damaged in transport. Failure to
observe this precaution may result in damage to the meter or injury to
the user.
2.42 Always connect one of the meter’s alligator clips to the low side of a power
circuit first. Never clamp onto a hot wire first, (usually red, black, or blue
in AC wiring circuits.) If you clamp onto a hot wire first, and touch the
other probe, you could receive a shock. Failure to observe this precaution
may result in damage to the meter or injury to the user.
2.43 To avoid damage to the meter and possible user injury, disconnect test leads
from test points before changing the function/range. Failure to observe this
precaution may result in damage to the meter or injury to the user.
2.44 Avoid usage near strong magnetic fields (magnets, loudspeakers,
transformers, motors, coils, relays, contactors, electromagnets, etc.).
The meter may display readings that are in error, causing the user to
misinterpret the hazards present. For example, the meter may indicate a
low voltage when high voltages are actually present. Failure to observe this
precaution may result in damage to the meter or injury to the user.
2.45 Avoid usage near strong electrostatic fields (high voltage power lines,
televisions, computer monitors, etc.). The meter may display readings that
are in error, causing the user to misinterpret the hazards present. For
example, the meter may indicate a low voltage when high voltages are
actually present. Failure to observe this precaution may result in damage
to the meter or injury to the user.
Test Equipment Depot - 800.517.8431
99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com

7 Triplett Model 9310-A
2.46 Avoid usage near strong RF fields (radio or television transmitters, walkie
talkies, cellular phones, etc.). The meter may display readings that are in
error, causing the user to misinterpret the hazards present. For example, the
meter may indicate a low voltage when high voltages are actually present.
Failure to observe this precaution may result in damage to the meter or
injury to the user.
2.47 Remove the battery when the meter may be left unused for longer than 1
month. Chemical leakage from the battery could damage the meter,
leading to user injury.
2.48 Do not use the meter if there is evidence of chemical leakage from the
battery. Leakage could damage meter and lead to injury of user.
2.49 Observe whether D-HOLD function is activated. The meter may not show
the presence of dangerous potentials when D-HOLD is activated. For
example, if D-HOLD is applied when the meter is reading zero, and 120VAC
is subsequently applied, the meter will continue to read zero. Failure to
observe this precaution may result in damage to the meter or injury to the
user.
2.50 Do not use the thermocouple to measure the temperature of objects that are
electrically “live”. Failure to observe this precaution may result in damage
to the meter or injury to the user.

8 Triplett Model 9310-A
3: INTERNATIONAL SYMBOLS
The following International Symbols may be used in this manual and on the case
of the meter to identify, caution, or warn the user of important product limitations
or important operational procedures that must be followed to ensure safe usage
of the product.
+
_
Low Battery Ground
See Instruction Manual AC
DC Fuse
Double Insulated Beeper
Diode AC or DC
Dangerous Voltages Capacitance
4: PRODUCT FEATURES
4.1 3 3/4 digit resolution (4000 counts)
4.2 Autoranging with Manual Overide
4.3 AC and DC Current Measurements (Clamp-On) to 1000A
4.4 38mm (1.5") max conductor diameter, 32mm (1.3") jaw opening
4.5 AC and DC Voltage Measurements to 600V (CAT III)
4.6 Resistance Measurements to 40 Meg Ohms
4.7 Capacitance Measurements to 100uF
4.8 Frequency Resolution of 0.1Hz at 60Hz (60Hz measures 60.0Hz)
4.9 Temperature Measurement with K type Thermocouple (included)
4.10 Auto Power Off increases battery life (defeatable)
4.11 Average Responding AC Measurements
4.12 Continuity Beeper
4.13 Diode Test
4.14 Data Hold
4.15 Relative Mode cancels zero error and offsets
4.16 Backlit LCD Display
4.17 Overload Protection
4.18 Double Insulated Design
4.19 CE Mark (EMC / LVD)
4.20 3 Year Warranty

9 Triplett Model 9310-A
5: SPECIFICATIONS
5.1 Display: 0.58" (15mm) high LCD
5.2 Display Resolution: 4000 counts, 0000 to 3999
5.3 Overrange Indication: Displays “OL”
5.4 Measurement Rate: 2 to 3 measurements per second
5.5 Low Battery Annunciator:
+
_
5.6 Jaw Dimensions: Accepts 38mm (1.5") max conductor diameter
if jaw is slipped over end of conductor. 32mm
(1.3") max conductor diameter if jaw is opened
and clamped over conductor.
5.7 Operating Conditions:
Temperature: 0 to 40 degrees C (32 to 104 degrees F)
Relative Humidity: less than 80%
5.8 Storage Conditions:
Temperature: -20 to 60 degrees C (-4 to 140 degrees F)
Relative Humidity: less than 90%
5.9 Case Dimensions: 219 x 84 x 45 mm, (L x W x H)
8.63 x 3.31 x 1.75 inches (L x W x H)
5.10 Weight: 338 grams, 0.75 lbs. (w/ battery, w/o leads)
5.11 Battery: 1 standard 9 volt alkaline battery (Triplett PN 37-48)
5.12 Battery Life: approx. 300 hours continuous usage except for
current ranges.
approx. 30 hours continuous usage in
current ranges.
5.13 Insulation: Double Insulated (Protection Class II)
5.14 Approvals: IEC 1010-1 (EN61010-1)
Overvoltage Category (Installation Category)
Category II to 1000 volts DC
Category II to 750 volts AC
Category III to 600 volts AC/DC
IEC 1010-2-032
CE: EMC, LVD
Note:
a) The following accuracy specifications are valid at 23 degrees C, +/- 5
degrees C, Relative Humidity less than 75%
b) The specifications are in the form “ +/- (x % of reading + LSD)” where LSD is
“Least Significant Digit”.

10 Triplett Model 9310-A
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12 Triplett Model 9310-A
FIGURE 1
FRONT PANEL OF 9310-A
1
2
3
4
6
9
11
12
13
10
5
7
8
Test Equipment Depot - 800.517.8431
99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com

13 Triplett Model 9310-A
6: 9310-A FRONT & REAL PANEL, DISPLAY DETAILS
1) Centering Marks – Position the conductor within the jaws at the intersection
of the indicated marks in order to meet the specified accuracy. An additional
error of several percent may result if conductor is not properly positioned.
2) Lever – Opens and closes the clamp jaws.
3) REL and DCA ZERO ADJ – Press this button to REL (make subsequent
readings RELative to the current reading) or to “zero out” any zero error. The
button is usually used to zero out errors on the‘400 Ω range, the A
range, or the 40nF Capacitance range.
4) SELECT – Press this button to access alternate measurement modes. For
example, on the Vrange, pressing the button selects between AC and DC
measurement modes.
5) COM Jack – The black test lead is plugged into this jack for all measurements
except current (amps). To avoid electrical shock or instrument damage, do
not connect this jack to any source that is more than 600V with respect
to earth ground.
6) V
Ω Hz Jack – The red lead is plugged into this jack for all measurements
except current (amps).
7) Hz/DUTY – When the FUNCTION switch is set to Hz or V , pressing this
button allows selection of the Frequency Measurement (Hz) mode or the Duty
Cycle Measurement (DUTY) mode.
8) RANGE – Pressing this button manually selects different measurement ranges.
For example, in the A mode, the button can be used to select the 400A
or the 1000A range. Some functions, like Frequency (Hz) and Capacitance
are autorange only (i.e. the RANGE button does not work on these ranges).
9) Display – The LCD display provides the measurement indication and other
instrument status. See Figure 2 for a more detailed view.
10) FUNCTION Switch – Used to select the function and range to measure

14 Triplett Model 9310-A
11) D. HOLD / LIGHT Button – Holds the reading in the display when the D-HOLD
button is pressed and released. appears in the display to indicate that the
D.HOLD is activated. To release, press the D.HOLD Button again. To turn on
the LCD backlight, press and hold the button for 2 seconds or longer. To turn
the backlight off, again press and hold the button for 2 seconds or longer.
12) Hand Guard – Grasp meter below this guard. Do not touch any bare
conductors that the jaws may be clamped around.
13) Clamp (Jaws) – Opens 1.25” (32MM) to enclose conductor(s).
FIGURE 2
DISPLAY DETAILS
Refer to Figure 2 to identify the various display annunciators.
AUTO The Auto (ranging) annunciator is on when the meter is set to a
function that has multiple ranges available. In most of these functions,
the user can manually change the ranges by pressing the SELECT
button. In the Capacitance mode, the Auto annunciator is on, but
the ranges are not user selectable.
The AC ~annunciator is on when the meter is set to measure AC
voltage or current.
Negative Sign Annunciator – This annunciator is displayed when DC
voltage is measured by the V
Ω Hz jack is negative with respect to the
COM jack. It can also be displayed in the Amode, when the
measured current is reversed to the direction of the polarity arrow.
Note: Polarity arrow indicates current flow from positive to negative.

15 Triplett Model 9310-A
+
_
Low Battery Annunciator – This annunciator is displayed when the
battery needs to be replaced.
Hold Annunciator – This annunciator is displayed any time the hold
mode is active.
REL Annunciator – This annunciator is displayed whenever the REL
mode or the DCA ZERO–ADJ mode is active.
Continuity Annunciator – This annunciator is displayed whenever the
Continuity (Beeper) mode is active.
Diode Test Annunciator – This annunciator is displayed whenever the
Diode Test mode is active.
% Percent Annunciator – This annunciator is displayed whenever the
Duty Cycle mode is active.
° F Fahrenheit Annunciator—– This annunciator is displayed whenever the
Temperature measurement mode is active.
Ω , k Ω , M Ω
Resistance (Ohms) Annunciators – These annunciators are displayed
whenever Resistance is being measured. The displayed annunciator
indicates the range of resistance that is being measured.
mV, V
Voltage Annunciators – These annunciators are displayed whenever
Voltage is being measured. The displayed annunciator indicates the
range of voltage that is being measured.
ACurrent (Amperes) Annunciator – This annunciator is displayed when
ever the Current (Amps) measurement mode is active.

16 Triplett Model 9310-A
nF, mF
Capacitance (Farads) Annunciators – These annunciators are
displayed whenever Capacitance is being measured. The displayed
annunciator indicates the range of capacitance that is being measured.
Hz, kHz, MHz
Frequency (Hertz) Annunciators – These annunciators are displayed
whenever Frequency is being measured. The displayed annunciator
indicates the range of frequency that is being measured.
FIGURE 3
OVERLOAD INDICATION
Overload Indication – Figure 3 shows the Overload Indication. This is the display
when the input exceeds the display capability of the Meter. If measuring
voltage or current, remove the input immediately. Depending on the
meter setting, the decimal points may or may not be present.

17 Triplett Model 9310-A
14
15
FIGURE 4
BATTERY COVER
Refer to Figure 4 for a view of the rear of the Meter.
14) Battery Cover Screw – This screw secures the battery cover.
15) Battery Cover – After the Battery Cover Screw has been removed, the Battery
Cover may be lifted to gain access to the battery. Install battery paying
attention to battery wires. The wires must be correctly positioned for
the cover to fit tightly on the meter.

18 Triplett Model 9310-A
7: PREPARATION FOR USE
7.1 Before using the Meter, familiarize yourself with the instrument and this
manual. READ AND REVIEW THIS MANUAL FREQUENTLY.
7.2 Each time the Meter is used, inspect it for mechanical defects as described in
Section 7.4. Also, inspect the test leads as described in Section 7.5. Finally,
perform the Battery Test as described in this section.
7.3 Only after all the tests have passed should the Meter be used. DO NOT USE
THE METER IF ANY OF THESE TESTS FAIL.
7.4 Visual Inspection of the Meter – Before use, inspect the Meter for any condi-
tions which would make it unsafe. Check for missing or loose parts (knobs,
screw, or insulators). Check also for damage, such a cracks, chips and burn
marks. Make certain that the Meter is free from oils, grease, dirt and exces-
sive moisture. IF ANY OF THESE CONDITIONS ARE FOUND, DO NOT USE
THE METER.
7.5 Visual Inspection of the Test Leads – Before use, inspect the test leads for
worn or cut insulation. Check also for deterioration of the insulation. Make
certain that no wire is exposed and that the jack insulators and alligator
boots are not cracked, broken, torn, or otherwise damaged.
WARNING!!!
IF THE TEST LEADS ARE IN ANY WAY DAMAGED OR DEGRADED, DO NOT
USE THEM. THEY MUST BE REPLACED. DO NOT USE TEST LEADS THAT
HAVE BEEN ALTERED OR ARE NOT A FACTORY APPROVED REPLACEMENT.
7.6 Battery Test
Before using the Meter, rotate the Function Switch to one of the Apositions
(these positions use the most power) and observe the display for the Low
Battery
+
_
annunciator . IF IT IS VISIBLE, REPLACE THE BATTERY. Refer
to Section 7.7 for instructions on installing and/or replacing the batteries.
7.7 Battery Replacement
7.7.1 Battery Cover Removal
Disconnect any test leads connected to the Meter and place the Function
Switch in the OFF position. Referring to Figure 4, locate and remove the
Battery Cover by removing the Battery Cover Screw. The Battery Cover is a
tight fit and a small straight blade or Philips screw driver can be helpful in
removing it.
Test Equipment Depot - 800.517.8431
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19 Triplett Model 9310-A
7.7.2 Battery Replacement
Remove the 9V battery and replace it with a fresh one.
7.7.3 Battery Cover Installation
Re-install the battery being careful not to pinch any wires. Snap the Battery
Cover back into place and reinstall the Battery Cover Screw.
WARNING!!!
Do not use the meter when the low battery annunciator
+
_
is displayed.
This may cause the meter to produce inaccurate readings, and lead the
user to believe that no hazard exists, when, in fact, dangerous voltages
or currents are present.
WARNING!!!
The meter may not show the presence of dangerous potentials when D-HOLD
is activated. For example, if D-HOLD is applied when the meter is reading
zero, and 120VAC is subsequently applied, the meter will continue to
read zero. Failure to observe this precaution may result in damage
to the meter or injury to the user.

20 Triplett Model 9310-A
8: GENERAL MEASUREMENT PROCEDURES
8.1 This section describes general operation of the Meter. When making
measurements of any type, refer to this section. Always prepare the Meter
for use by reading and following the Preparation for Use section of this
manual (Section 7.0).
WARNING!!!
THE MODEL 9310-A IS INTENDED FOR USE ONLY BY PERSONNEL
TRAINED IN THE PROPER SAFETY PROCEDURES AND WHO CAN
RECOGNIZE SHOCK AND SAFETY HAZARDS.
8.2 High Voltage Measurements
CAUTION: Always observe the following rules and procedures when making
measurements in high voltage circuits. Voltage greater that 40VDC or 25VAC
may create a serious shock hazard. Never use this Meter on circuits with
CAT III voltages higher that 600VRMS. Treat any unknown voltages as
though they were high voltage.
WARNING!!!
IF IT IS NOT POSSIBLE TO TURN POWER OFF TO THE EQUIPMENT,
THEN THE USE OF A LINEMAN’S GLOVE CONFORMING TO
ASTM D120 IS REQUIRED.
For maximum safety, turn the equipment or voltage source off before
connecting the test leads. Make certain that no capacitors in the
circuit being tested remain charged to a high voltage.
Set the Meter to the appropriate AC or DC Voltage range. If the voltage is
unknown, set the Meter to the Auto (default) or to the highest range.
NEVER CHANGE RANGES WITH POWER APPLIED TO THE CIRCUIT.
8.2.1 To connect the leads and take the measurement proceed as follows.
If you ARE NOT using a Lineman’s Glove
While holding the insulated test lead probe body, touch the test prod tips
to the circuit being tested. If no voltage is present, it is safe to use the
supplied alligator clips to connect to the points to be measured. If a
voltage is found, check the equipment to make certain that all power is
off and all capacitors are discharged.