AEMC instruments 6416 User manual

6416
User Manual
ENGLISH
CLAMP-ON GROUND TESTER
WITH AEMC
®
INSTRUMENTS

Copyright © Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments. All rights reserved.
No part of this documentation may be reproduced in any form or by any means (including electronic
storage and retrieval or translation into any other language) without prior agreement and written consent
from Chauvin Arnoux®, Inc., as governed by United States and International copyright laws.
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
15 Faraday Drive • Dover, NH 03820 USA
Tel: [phone] or [phone] • Fax: [phone]
This documentation is provided “as is,” without warranty of any kind, express, implied, or otherwise.
Chauvin Arnoux®, Inc. has made every reasonable e󰀨ort to ensure that this documentation is accurate;
but does not warrant the accuracy or completeness of the text, graphics, or other information contained
in this documentation. Chauvin Arnoux®, Inc. shall not be liable for any damages, special, indirect,
incidental, or inconsequential; including (but not limited to) physical, emotional or monetary damages
due to lost revenues or lost prots that may result from the use of this documentation, whether or not the
user of the documentation has been advised of the possibility of such damages.

Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
certifies that this instrument has been calibrated using
standards and instruments traceable to international
standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be requested at
the time of purchase, or obtained by returning the
instrument to our repair and calibration facility, for
a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair and
calibration section at www.aemc.com.
Serial #:
Catalog #: 2141.01
Model #: 6416
Please fill in the appropriate date as indicated:
Date Received:
Date Calibration Due:
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com

4 Clamp-on Ground Resistance Tester Model 6416
TABLE OF CONTENTS
1. INTRODUCTION.................................................................................. 6
1.1 PRECAUTIONS FOR USE .................................................................... 7
1.2 RECEIVING YOUR SHIPMENT ............................................................ 8
1.3 ORDERING INFORMATION .................................................................. 8
1.3.1 ACCESSORIES AND REPLACEMENT PARTS ........................ 8
2. PRODUCT FEATURES........................................................................ 9
2.1 DESCRIPTION........................................................................................ 9
2.2 FEATURES............................................................................................ 10
2.3 APPLICATIONS .................................................................................... 10
2.4 DISPLAY................................................................................................ 11
2.5 CONTROL FEATURES......................................................................... 14
2.6 AUDIBLE SIGNALS .............................................................................. 15
2.7 ROTARY SWITCH FUCTIONS ............................................................ 15
2.8 BUTTONS FUCTIONS ......................................................................... 16
3. PRINCIPLE OF OPERATION ............................................................ 17
4. SET UP............................................................................................... 19
4.1 MENU ITEMS ........................................................................................ 19
4.2 SET-UP MENU DISPLAYS................................................................... 19
4.3 SELECTING A SPECIFIC MENU ........................................................ 20
4.4 SET-UP MENUS.................................................................................... 20
4.5 CALIBRATION LOOP ........................................................................... 23
5. OPERATION ...................................................................................... 24
5.1 INSERTING THE BATTERIES............................................................. 24
5.2 SETTING THE DATE AND TIME ......................................................... 24
5.3 DISPLAY EXAMPLE ............................................................................ 25
5.4 TURNING THE INSTRUMENT ON...................................................... 25
5.5 TURNING THE INSTRUMENT OFF.................................................... 26
5.6 STANDARD AND ADVANCED MODES .............................................. 26
5.7 MEMORY............................................................................................... 26
5.7.1 MEMORY CAPACITY................................................................. 26
5.7.2 STORING MEASUREMENTS INTO MEMORY....................... 26
5.7.3 READING STORED DATA......................................................... 27
5.7.4 ERASING THE MEMORY.......................................................... 27
5.7.5 USING THE ▲ AND ▼ BUTTONS............................................ 27
5.8 ALARM MANAGEMENT....................................................................... 27
5.8.1 VOLTAGE ALARM...................................................................... 28
5.8.2 CURRENT ALARM..................................................................... 28
5.8.3 IMPEDANCE ALARM................................................................. 28

Clamp-on Ground Resistance Tester Model 6416 5
5.8.4 NO ALARM DETECTION........................................................... 29
5.8.5 PRIORITY OF THE ALARMS.................................................... 29
6. MEASUREMENT MODES ................................................................. 30
6.1 ROTARY POSITION Ω+A .................................................................... 30
6.1.1 STANDARD MODE .................................................................... 30
6.1.1.1 MAKING A MEASUREMENT .............................................. 30
6.1.1.2 MEASUREMENT RESULTS ............................................... 31
6.1.2 ADVANCED MODE.................................................................... 31
6.1.2.1 MAKING A MEASUREMENT .............................................. 31
6.1.2.2 MEASUREMENT RESULTS ............................................... 32
6.1.3 GENERAL INFORMATION........................................................ 33
6.2 ROTARY POSITION (A) ....................................................................... 34
6.3 ROTARY POSITION - (MR).................................................................. 34
6.3.1 DISPLAYING STORED MEASUREMENTS............................. 34
6.3.1.1 DISPLAYED IN STANDARD MODE................................... 35
6.3.1.2 DATA DISPLAYED IN ADVANCED MODE ........................ 36
7. SPECIFICATIONS.............................................................................. 38
7.1 REFERENCE CONDITIONS................................................................ 38
7.2 ELECTRICAL ........................................................................................ 38
7.2.1 LOOP RESISTANCE MEASUREMENT ................................... 38
7.2.2 LOOP INDUCTANCE MEASUREMENT................................... 39
7.2.3 CONTACT VOLTAGE (TOUCH VOLTAGE).............................. 39
7.2.4 CURRENT MEASUREMENT .................................................... 39
7.2.5 POWER SUPPLY ....................................................................... 40
7.3 ENVIRONMENTAL................................................................................ 40
7.4 MECHANICAL....................................................................................... 41
7.5 SAFETY ................................................................................................. 41
8. MAINTENANCE................................................................................. 42
8.1 CLEANING ............................................................................................ 42
8.2 BATTERY REPLACEMENT ................................................................. 42
8.3 REPAIR AND CALIBRATION ............................................................... 43
8.4 TECHNICAL ASSISTANCE.................................................................. 43
8.5 LIMITED WARRANTY .......................................................................... 44
8.6 WARRANTY REPAIRS ......................................................................... 44

6 Clamp-on Ground Resistance Tester Model 6416
1. INTRODUCTION
Thank you for purchasing an AEMC Clamp-on Ground Resistance Tester.
For best results from your instrument and for your safety, read the enclosed
operating instructions carefully and comply with the precautions for use. These
products must be only used by qualied and trained users.
CAUTION - Risk of Danger! Indicates a WARNING. Whenever this symbol is
present, the operator must refer to the user manual before operation
CAUTION - Indicates a risk of electric shock. The voltage at the parts marked
with this symbol may be dangerous
Application or withdrawal authorized on conductors carrying dangerous voltages.
Type A current sensor as per IEC 61010-2-032.
Signies that the instrument is protected by double or reinforced insulation
The product has been declared recyclable after analysis of its life cycle in
accordance with the ISO14040 standard.
Important instructions to read and understand completely
Important information to acknowledge
This product complies with the Low Voltage & Electromagnetic Compatibility
European directives (73/23/CEE & 89/336/CEE)
The UKCA marking certies that the product complies with the requirements
that apply in the United Kingdom, specically regarding Low-Voltage Safety,
Electromagnetic Compatibility, and the Restriction of Hazardous Substances
In the European Union, this product is subject to a separate collection system
for recycling electrical and electronic components in accordance with directive
WEEE 2002/96/EC
Denition of Measurement Categories (CAT)
CAT IV corresponds to measurements performed at the primary electrical supply
(<1000 V).
Example: primary overcurrent protection devices, ripple control units, and meters.
CAT III corresponds to measurements performed in the building installation at the
distribution level.
Example: hardwired equipment in xed installation and circuit breakers.
CAT II corresponds to measurements performed on circuits directly connected to
the electrical distribution system.
Example: measurements on household appliances and portable tools.

Clamp-on Ground Resistance Tester Model 6416 7
1.1 PRECAUTIONS FOR USE
This instrument and its accessories comply with safety standards EN 61010-1,
EN 61010-030, and EN 61010-2-032 for voltages of 600V in Category IV at an
altitude of less than 2000m with a pollution degree of not more than 2.
Failure to observe the safety instructions may result in electric shock, re,
explosion, and destruction of the instrument and of the installations.
■The operator and/or the responsible personnel must carefully read and clearly
understand the various precautions to be taken in use. Sound knowledge and
a keen awareness of electrical hazards are essential when using this
instrument.
■If you use this instrument other than as specied, the protection it provides
may be compromised, thereby endangering you.
■Do not use the instrument on networks of which the voltage or category
exceeds those mentioned.
■Do not use the instrument if it seems to be damaged, incomplete, or poorly
closed.
■Before each use, check the condition of the insulation on housing. Any item of
which the insulation is deteriorated (even partially) must be set aside for repair
or scrapping.
■Use personal protection equipment systematically.
■When handling the instrument, keep your ngers behind the physical guard.
■All troubleshooting and metrological checks must be performed by competent
and accredited personnel.
■Avoid impacts on the measurement head, in particular the air gap.
■Keep the surfaces of the air gap clean; even a little dirt can cause the clamp to
malfunction.
■All metal objects or wires connected to the electrical system should be
assumed to be lethal until tested. Grounding systems are no exceptions.
■Use extreme caution when using the instrument around energized electrical
equipment.
■Never attempt to use the instrument to twist or pry the ground electrode or
ground wire away from the equipment being grounded.

8 Clamp-on Ground Resistance Tester Model 6416
1.2 RECEIVING YOUR SHIPMENT
Upon receiving your shipment, make sure that the contents are consistent with
the packing list. Notify your distributor of any missing items. If the equipment
appears to be damaged, le a claim immediately with the carrier and notify your
distributor at once with a detailed description of any damage. Save the damaged
packing container to substantiate your claim.
1.3 ORDERING INFORMATION
Clamp-on Ground Resistance Tester Model 6416 ....................... Cat. #2141.01
Includes a hard carrying case, calibration loop, four 1.5V AA batteries and a user
manual.
1.3.1 Accessories and Replacement Parts
Wrist Strap........................................................................................ Cat. #2135.47
Hard Carrying Case.......................................................................... Cat. #2141.50
5 Ω Calibration Loop......................................................................... Cat. #2141.51
Order Accessories and Replacement Parts Directly Online
Check our Storefront at www.aemc.com/store for availability
PRODUCT PACKAGING
Also Included:
(4) 1.5 V AA Batteries
(1) Wrist Strap
(1) Safety Shhet (20 languages)
(1) Clamp-on Ground Tester
Model 6416
Cat. #2141.01
Hard Accessory Case
Cat. #2141.51
5 ΩCalibration Loop
Cat. #2141.51

Clamp-on Ground Resistance Tester Model 6416 9
2. PRODUCT FEATURES
2.1 DESCRIPTION
The Clamp-on Ground Resistance Tester Model 6416 measures grounding
electrodes and grid resistance without the use of auxiliary rods. Clamp-on ground
resistance testers can be used in multi-grounded systems without disconnecting
the ground system under test. The Model 6416 simply clamps around theground
conductor or rod and measures the resistance to ground. By performing
measurements on intact ground systems, the user also veries the quality of the
grounding connections and bonds. Resistance and continuity of grounding loops
around pads and buildings can also be measured.
The Model 6416 includes a current measurement function. The ground tester’s
high sensitivity enables measurement of leakage current owing to ground or
circulating in ground loops from 0.2 mA to 40 A and resistances from 0.01 Ω to
1500 Ω.
Battery life information is displayed at power-up and the Auto Power OFF feature
can be enabled for power management. Additional features include the large
OLED (Organic Light Emitting Diode) display that ensures high readability of
data. The Buzzer and Auto Power OFF features can be disabled at any time.
The Model 6416 is equipped with an alarm function and data storage function. In
the Alarm mode, the probe will audibly and visually indicate when the reading is
beyond an input set point. You can also have the alarm activate above or below
the set point. This alarm feature permits quick eld checks where only “pass” or
“fail” readings are required.
The data storage function logs up to 300 measurements (Ω and/or A). This
enables you to conduct eld surveys, and to retrieve and analyze the readings
at a later time. The alarm settings and stored data are saved when the ground
tester is turned OFF.
Two new features unique to AEMC®Instruments are test frequency selection and
touch voltage indication.
The ability to select the test frequency provides more accurate measurements in
inductive environments.
Displaying voltage derived from current and resistance measurements provides
an extra level of safety for the user, indicating a potentially dangerous touch
condition.

10 Clamp-on Ground Resistance Tester Model 6416
2.2 FEATURES
■Simple and fast clamp-on operation - no leads, no auxiliary rods or spacing
requirements
■Ammeter: Current measurements from 0.2 mA to 40 A.
■Loop ohmmeter: Measurement of loop impedances from 0.01 Ω to 1500 Ω.
The ohmmeter function makes allowance for the presence of inductances in
the loop, making impedance measurements more accurate at low values.
■Contact voltage: The contact voltage is determined by calculating the product
of the loop impedance and leakage current. The value found is an upper bound
on the voltage between the measurement point and earth, since the
impedance taken into account is that of the whole loop.
■Touch voltage display
■Large multi-function, bright yellow organic light emitting diode display (OLED)
■Display in Standard mode (one screen) or Advanced mode (three screens)
■Clamping diameter of 1.38 in (35 mm) accommodating cables up to 1000 kcmil
■Stores up to 300 measurements (Ω and/or A, with time-stamping)
■Displays stored measurements on the display
■Measurement hold by the HOLD and AUTO-HOLD functions
■Clamp opening made easy by a trigger with a force compensation system
■Auto Power OFF function
■Alarm function with adjustable set point and buzzer for quick eld checks
■Rugged Lexan® head and body construction resists breakage
■Alarm settings and stored memory information saved during shutdown
■NOISE icon and buzzer notify the user to presence of dangerous voltage and
current levels
■Designed to EN 61010-1, 600 V CAT IV safety standards
2.3 APPLICATIONS
■Ground electrode system resistance
■Bonding/continuity checks
■Cell tower grounding verication
■Ground measurements on Railroad signaling systems

Clamp-on Ground Resistance Tester Model 6416 11
2.4 DISPLAY
The Model 6416 is equipped with a 152-segment OLED (organic light-emitting
diode) display. This OLED technology results in a thinner, lighter, sharper, higher
contrast display compared to LCD displays.
Item Description
1 Indicates selection of Advanced mode.
2 In Advanced mode, this indicates when the inductive component is
negligible with respect to the resistive component.
3 Main Display:
- Measurement of the impedance or current.
- Display of the date and time (month-day and hour-minute) in
congured and stored values display mode.
4 In Advanced mode, these symbols identify the value displayed
(resistance or impedance).
5 Data storage mode.
6 Memory recall mode.
7 Memory index four-digit digital display (0 to 9999-counts):
- Measurement sequence number of the current memory in normal
operation associated with the Recall (MR) or Storage (MEM)
indications.
- Date stamp (year) when the device is congured.
1
2
3
4
5
6 7 8 9 10 11
12
13
14
15
161718
192021

12 Clamp-on Ground Resistance Tester Model 6416
Item Description
8 Signal indicating potentially hazardous voltage. Blinks when the
contact voltage exceeds 50 V.
9Alarm threshold high/low indicator (operational use or conguration):
▲ Alarm threshold high indicator.
AL Alarm threshold adjustment mode or Alarm function.
▼ Alarm threshold low indicator.
10 Alarm threshold display:
- Display of one of the alarms (1000-count display) with units.
- These three digits are also used when conguring the time
display mode.
(A for A.M., P for P.M. or 24H) in SET-UP (see § 4.4, menu #8).
11 Unit of the alarm displayed. The alarm can be dened on a
resistance impedance, voltage, or current, depending on the
measurement chosen (Ω+A or A).
- A: Current measurement alarm.
- Ω: Resistance measurement alarm.
- V: Voltage measurement alarm.
12 Unit of the central measurement display:
- V: Contact voltage measurement unit.
- Ω: Impedance measurement unit. Symbol used for impedances
at the measurement frequency, for impedances referred to the
network frequency, or for the resistive component.
13 Unit of the top measurement display:
- mH: Loop inductance measurement unit.
- mA or A: Current measurement unit.
14 Upper display: 4000-count current measurement and 500-count loop
inductance measurement (Advanced mode).
15 Battery charge indicator:
- Not displayed: Batteries charged.
- Blinking: Batteries low. The device remains functional, but the
batteries will have to be replaced soon.
- Steady: Batteries discharged. The display indicates Lo bat. It is
not possible to make measurements, read records, or congure
parameters.
16 Continuous operation of the clamp (Auto Power OFF disabled).
Selection of Auto Power OFF mode is made in SET-UP (see § 4.4,
menu #3).

Clamp-on Ground Resistance Tester Model 6416 13
Item Description
17 Symbol indicating incorrect closing of the clamp; measurements
cannot be made in this case. If the AUTO-HOLD mode is activated,
the HOLD icon blinks and the measurement is frozen. Selection of
AUTO-HOLD mode is made in SET-UP (see § 4.4, menu #11).
18 Symbol indicating the presence of disturbance (current) in the loop,
which compromises the accuracy of the impedance measurement.
19 Indicates that the main display shows the date (when the rotary
switch is set to MR or SET-UP).
20 Indicator of freezing the measurement display when the HOLD
button is pressed or while in the AUTO-HOLD mode.
21 Display of the buzzer’s active state; the icon is not shown when the
buzzer is inactive. Selection of the buzzer operating mode is made
in SET-UP (see § 4.4, menu #2).

14 Clamp-on Ground Resistance Tester Model 6416
2.5 CONTROL FEATURES
Figure 2-2
Head Assembly: Consists of two individually shielded magnetic cores
Guard: Safety guard; do not place hands above this guard
Lever: Opens or closes the jaws
:Toggles display backlight ON/OFF
MEM: Stores measurements into memory
►: Navigates and validates measurement displays
OLED Display: Crisp, clean and bright display
Rotary Switch: Selects measurement functions and instrument SET-UP
HOLD: Freezes last measured value on the display
MEM
HOLD
OFF
A
MR
SET-UP
6
0
0
V
C
A
T
I
V
4
0
A
1
2
38
9
4
5
6
7

Clamp-on Ground Resistance Tester Model 6416 15
2.6 AUDIBLE SIGNALS
There are four audible signals:
Type Duration Description
Low-pitched Short Normal use (button pressed).
Permanent High/Low alarm threshold (Ω, A) triggered.
High-pitched Short Abnormal use (for example, memory full).
Permanent Alarm threshold (V) exceeded.
Audible signals can be enabled or disabled in SET-UP (see § 4.4, menu #2).
The symbol indicates:
Description
Visible Buzzer enabled; an alarm or a button press causes an audible
signal to be emitted.
Not Visible No audible signal is emitted.
This programming is backed-up and retrieved at each reset.
During a measurement, a long press on the ► button toggles between activation
and deactivation of the buzzer.
NOTE: Since the measurement frequency is audible, the operator hears
a beeping signal. This is neither an operating fault nor an alarm, and it
cannot be eliminated. This audible signal is amplied by the presence of
current in the loop.
2.7 ROTARY SWITCH FUCTIONS
Range Description
OFF Instrument is powered OFF.
Ω+A Simultaneous selection of the loop impedance measurement
and the leakage current measurement.
ACurrent measurement selection.
MR Displays stored measurements.
SET-UP Access to the instrument conguration and deletion of stored
measurements.

16 Clamp-on Ground Resistance Tester Model 6416
2.8 BUTTONS FUCTIONS
Button Description
▲
• When the rotary switch is set to Ω+A or A: Increases the
brightness of the display, making it easier to read the display
in an environment with strong background illumination.
Highlighting activated for 30 seconds.
• When the rotary switch is set to SET-UP or MR: Serves as
the ▲ arrow when browsing in the menus and values. The
brightness of the display does not change when device is set
to SET-UP or MR.
MEM
▼
• When the rotary switch is set to Ω+A or A: Records the
measured value. All of the data is recorded in the Standard or
Advanced mode.
• When the rotary switch is set to SET-UP or MR: Serves as
the ▼ arrow when browsing in the menus and values.
►
• When the rotary switch is set to Ω+A (Advanced Mode):
Short Press: Switches the display through the following three
modes:
- Display of the impedance recalculated at the selected
frequency.
- Display of the contact voltage (product Z*I).
- Display of R and L.
Long Press: Enables or disables the audible alarms.
• When the rotary switch is set to SET-UP:
- Validation when browsing in the menus and values.
• When the rotary switch is set to MR (Advanced Mode):
- Switches the display through the measurement screens
and the measurement date/time.
HOLD
&
AUTO-HOLD
• When the rotary switch is set to Ω+A:
- Freezes the displayed measurement for as long as the
HOLD button is pressed. The NOISE, clamp open
( ), and alarm exceedence ( ) icons are visible,
if they were active.
AUTO-HOLD Function:
If the AUTO-HOLD mode was enabled during instrument
SET-UP (see § 4.4, menu #11), opening the clamp acts as
the identical state to the HOLD mode for as long as the clamp
is open. The benet of this function is that it makes it easy to
freeze the measurement with one hand, when access to the
HOLD button is di󰀩cult.
If the HOLD button is not pressed during this time, closing the
clamp automatically exits the AUTO-HOLD mode.

Clamp-on Ground Resistance Tester Model 6416 17
3. PRINCIPLE OF OPERATION
Typically, a grounded distribution system can be simulated by the basic circuit
shown in Figure 3-1 or an equivalent to the diagram shown in Figure 3-2. If
voltage (V) is applied to any measured grounding electrode Rx through a
special transformer; current (I) ows through the circuit, thereby establishing the
following equation:
Therefore, V/I = Rx is established. If I is detected and measured with V kept
constant, the measured grounding electrode resistance Rx can be obtained.
A signal is fed to a special transformer via a power amplier from a 2403 Hz
constant voltage oscillator. The resulting current is then sensed by a detection
CT (current transformer). An active lter is used to dampen earth current at
commercial frequency (50/60 Hz) and high-frequency noise.
Example: If clamped around any grounding electrode in a multi-grounded
system, the measured value of the electrode under test will be the resistance
of that particular rod in series with the equivalent parallel resistance value that
the rest of the multi-grounded system represents. If an electrical system had
101 grounding electrodes and each had a resistance value of 25 Ω, and it were
clamped around any electrode in the system, the measured value would be 25.Ω
in
series with the equivalent parallel resistance of the other 100 electrodes or 0.2 Ω.
The displayed value would be 25.2 Ω (instrument resolution to 0.1 Ω).
V/I = 25 Ω + 0.25 Ω
Rx = 25.2 Ω
V
I= Rx + 1
Σn
i=1
1
Ri
Rx » 1
Σn
i=1
1
Ri
where, usually

18 Clamp-on Ground Resistance Tester Model 6416
In most eld applications, the number of electrodes that make up a multi-
grounded system would be higher; therefore, the equivalent parallel resistance is
negligible with respect to the rod under test.
Figure 3-1
Figure 3-2
I
V
Rx R1R2Rn-1 Rn
RxR1RnRn-1

Clamp-on Ground Resistance Tester Model 6416 19
4. SET UP
Turn the rotary switch to the SET-UP position.
4.1 MENU ITEMS
The SET-UP position gives access to the following options to set user dened
parameters for instrument conguration:
No. Function
1Erases stored measurements.
2Enables/disables the buzzer.
3Enables/disables Auto Power OFF.
4Sets the impedance alarm threshold (Ω).
5Sets the voltage alarm threshold (V).
6Sets the current alarm threshold (I).
7Sets the date.
8Sets the time.
9Selects the Standard or Advanced operating mode.
10 Selects the test frequency for the impedance.
11 Enables/disables the AUTO-HOLD mode.
12 Displays the version number.
13 Not used.
4.2 SET-UP MENU DISPLAYS
The 12 accessible menus are clearly
identied by their title and number, as
shown in the example in Figure 4-1
(menu #5) which displays the voltage
alarm threshold adjustment (AL. V).
Figure 4-1

20 Clamp-on Ground Resistance Tester Model 6416
4.3 SELECTING A SPECIFIC MENU
Use the buttons as follows to select a specic menu item:
Button Action
▲Move up in the menu tree.
▼Move down in the menu tree.
►Select the menu displayed or return to the previous menu.
MR Displays stored measurements.
NOTE: When changes have been made in one of the SET-UP menus,
the changes can be cancelled by turning the rotary switch to a position
other than SET-UP, provided that there has not been a return to the main
menu (by pressing ►).
4.4 SET-UP MENUS
Menu # Indication Function
1CLr
Erasing the Memory:
■ Enter the menu by ►. CLr blinks.
■ Press ▲ and ▼ simultaneously for 6 seconds.
All recorded data is erased. The meter indicates
MEM 0.
■ Return to the previous menu by ►.
2Snd
Enabling/Disabling the Buzzer:
■Enter the menu by ►. Snd blinks.
■Press ▲ or ▼.
■The Buzzer is enabled when the icon is visible
and disabled when it is masked.
■Return to the previous menu by ►.
NOTE: In the Ω+A and A measurement modes, a long
press on ► activates or deactivates the audible alarms.
3StOP
Enabling/Disabling Auto Power OFF:
■ Enter the menu by ►. StOP blinks.
■ Press ▲ or ▼.
■ Auto Power OFF is deactivated when the icon is
visible and activated when it is hidden.
■ Return to the previous menu by ►.