Metrix MTX 3281, MTX 3282, MTX 3283 User guide
VIEUX
1
1
0
0
0
0
,,,,
0
0
0
0
0
0
----
cccc
oooo
uuuu
nnnn
nnnn
nnnn
rrrr
rrrr
rrrr
tttt
tttt
tttt
ssss
ssss
ssss
1
1
11
1
1
11
1
1
11
2
2
22
2
2
22
2
2
22
3
3
33
3
3
33
3
3
33
G
G
GG
G
G
GG
G
G
GG
rrrr
rrrr
rrrr
aaaa
aaaa
aaaa
pppp
pppp
pppp
hhhh
hhhh
hhhh
11
1
1
11
1
1
11
iiii
cccc
iiii
iiii
cccc
cccc
aaaa
U
U
U
aaaa
aaaa
00
0
0
00
0
0
00
s
e
s
e
s
e
00
0
0
00
llll
llll
llll
r
'
r
'
r
0
0
00
M
M
MM
M
M
MM
M
M
MM
s
M
s
M
'
s
,,,,
,,,,
M
M
MM
M
M
MM
M
M
MM
M
M
MM
M
M
MM
M
M
MM
M
M
MM
M
M
MM
M
M
MM
a
a
M
a
00
0
0
00
0
0
00
uuuu
uuuu
uuuu
n
u
n
u
n
u
00
0
0
00
0
0
00
llll
llll
llll
TTTT
TTTT
TTTT
TTTT
TTTT
TTTT
TTTT
TTTT
TTTT
a
l
a
l
a
l
tttt
tttt
tttt
00
0
0
00
0
0
00
iiii
iiii
iiii
XXXX
XXXX
XXXX
XXXX
XXXX
XXXX
XXXX
XXXX
XXXX
----
----
m
m
mm
m
m
mm
m
m
mm
3
3
33
3
3
33
3
3
33
3
3
33
3
3
33
3
3
33
3
3
33
3
3
33
3
3
33
cccc
cccc
eeee
eeee
eeee
oooo
oooo
tttt
tttt
tttt
2
2
22
2
2
22
2
2
22
2
2
22
2
2
22
2
2
22
2
2
22
2
2
22
2
2
22
uuuu
uuuu
eeee
eeee
eeee
8
8
88
8
8
88
8
8
88
8
8
88
8
8
88
8
8
88
8
8
88
8
8
88
8
8
88
Pôle Test et Mesure CHAUVIN-ARNOUX
Parc des Glaisins
6, avenue du Pré de Challes
F - 74940 ANNECY-LE-
Tel. +33 (0)4.50.64.22.22 - Fax +33 (0)4.50.64.22.00
X02947F00 - Ed. 01 - 09/11
General instructions
Contents
General Instructions ........................................................................................................................................3
Introduction ................................................................................................................................................................. 3
Symbols used on the instrument............................................................................................................................... 3
Precautions and safety measures ............................................................................................................................ 3
Safety features............................................................................................................................................................. 4
Maintenance, metrological verification..................................................................................................................... 4
Warranty....................................................................................................................................................................... 4
Cleaning....................................................................................................................................................................... 4
Measurement input protection systems.................................................................................................................... 5
Special functions......................................................................................................................................................... 5
Description of the instrument .........................................................................................................................6
Front, keyboards (illustration).................................................................................................................................... 6
Rear (illustration, markings)....................................................................................................................................... 6
Measurement terminal block (illustration, markings)..............................................................................................6
Front (description) ...................................................................................................................................................... 7
Inputs ........................................................................................................................................................................... 9
Display.......................................................................................................................................................................... 9
Functional description...................................................................................................................................10
Preparation for use ................................................................................................................................................... 10
Initial settings ............................................................................................................................................................ 14
Specific configurations of the instrument.............................................................................................................. 15
Initialisation of the values ........................................................................................................................................ 16
Access to main functions......................................................................................................................................... 17
Range management .................................................................................................................................................. 18
Display HOLD management HOLD, REL, SURV, SPEC, MEM ............................................................................... 18
Access to secondary functions ............................................................................................................................... 25
MATH Function.......................................................................................................................................................... 27
Favourite function..................................................................................................................................................... 29
SX-DMM Software kit (option).................................................................................................................................. 31
Bluetooth (on –BT version) ...................................................................................................................................... 31
Technical specifications................................................................................................................................33
Voltage measurement............................................................................................................................................... 33
Current measurement............................................................................................................................................... 35
Frequency measurement.......................................................................................................................................... 36
Resistance measurement......................................................................................................................................... 37
Continuity mode........................................................................................................................................................ 37
Test diode .................................................................................................................................................................. 37
Capacitance measurement....................................................................................................................................... 38
Temperature measurement with Pt100 or Pt1000 sensor (MTX 3282, MTX 3283)............................................... 38
Temperature measurement with J or K thermocouple.......................................................................................... 38
dBm measurement.................................................................................................................................................... 38
Positive or negative peak measurement................................................................................................................. 39
Resistive power......................................................................................................................................................... 39
Duty ratio DC+, DC-................................................................................................................................................... 39
Pulse counting CNT+, CNT-...................................................................................................................................... 39
Clock .......................................................................................................................................................................... 40
Influences .................................................................................................................................................................. 40
Multimeter traceability, calibration .......................................................................................................................... 40
General specifications...................................................................................................................................41
Environmental conditions ........................................................................................................................................ 41
Power ......................................................................................................................................................................... 41
Display........................................................................................................................................................................ 41
Safety.......................................................................................................................................................................... 42
CEM ............................................................................................................................................................................ 42
RS232 DB9F and USB optical cables (options)...................................................................................................... 42
Mechanical characteristics............................................................................................................................42
Box ............................................................................................................................................................................. 42
Packaging .................................................................................................................................................................. 42
Supply, accessories.......................................................................................................................................43
Index................................................................................................................................................................44
2 100.000-count Graphical Multimeters
General instructions
General instructions
Introduction
Symbols used on the instrument
Precautions and safety measures
You have just acquired a 100,000-count graphical multimeter.
Thank you for your trust in our products.
It complies with safety standard EN 61010-1, double insulation, relative to
electronic measuring instruments.
For optimum service, read this manual carefully and comply with the operating
precautions.
Earth terminal Equipment protected throughout by double insulation.
Attention : Risk of electrical shock
•
Read carefully all the notes preceded by the symbol .
•
If you use this instrument in a way which is not specified, the protection
which it provides may be compromised, putting you in danger.
•
The safety of any system incorporating this instrument is the responsibility of
the system assembler.
•
This instrument has been designed for use indoors:
Warning: Risk of danger.
Refer to the operating manual to find out the nature of the potential hazards and the
action necessary to avoid such hazards.
The rubbish bin with a line through it means that in the European Union, the product
must undergo selective disposal for the recycling of electric and electronic material,
in compliance with Directive WEEE 2002/96/EC.
- in an environment with pollution level 2,
- at an altitude of less than 2000 m,
- at a temperature between 0° C and 55° C
- with relative humidity of less than 80% up to 31° C.
•
Measurement category III for voltages no higher than 1000 V (AC or DC) in
relation to the earth.
•
Measurement category IV for voltages no higher than 600 V (AC or DC) in
relation to the earth.
Definition of
measurement
categories
before use
CAT III: Measurement category III corresponds to measurements on building installations.
CAT IV : Measurement category IV corresponds to measurements taken at the source of
•
•
Example: measurements on distribution panels, cabling, etc.
low-voltage installations
Example: metering and measurements on overvoltage protection devices...
Comply with environmental and storage conditions.
For your safety, only use the leads delivered with the instrument:
they comply with the norm EN 61010-1.
•
Before using it, systematically check that it is in perfect condition.
during use
As a safety measure, use only suitable leads and accessories supplied
with the instrument or approved by the manufacturer.
•
If the measurement category of the accessory is different from that of the
apparatus, the lowest category applies to the unit.
•
Never exceed the protection limit values indicated in the specifications for
each type of measurement.
•
Before changing the function, disconnect the measurement leads from the
circuit measured.
•
Never measure resistances on a live circuit.
•
When the instrument is connected to the measurement circuits, never touch
an unused terminal.
100.000-count Graphical Multimeters 3
General instructions
General instructions (cont’d)
Safety features
Maintenance and metrological verification
Warranty
•
It is impossible to access the battery or fuse compartment without first
disconnecting the measurement leads.
•
When measuring voltages greater than 60 VDC or 30 VAC, the symbol
flashes on the display.
•
Automatic detection of a connection on the "Ampere" terminal.
•
When there is a persistent range overrun, an intermittent buzzer indicates the
risk of electric shock.
Any access to the internal circuits for adjustment, servicing or repair of the unit
under power must be undertaken only by qualified personnel, after reading the
instructions in this manual.
A qualified person is a person who is familiar with the installation, its
construction, its use and the hazards that exist. They are authorized to activate
and deactivate the installation and equipment, in compliance with the safety
instructions.
For all repairs under or outside of the warranty, return the device to your retailer.
This equipment is guaranteed for 3 years against any defect in materials or
workmanship, in accordance with the general terms and conditions of sale, .
During this period, the equipment can only be repaired by the manufacturer. The
manufacturer reserves the right to carry out repair or replacement of all or part of
the equipment.
If the equipment is returned to the manufacturer, initial transport costs shall be
borne by the customer.
The warranty does not apply in the event of:
•
unsuitable use of the equipment or use with other incompatible equipment
•
modification of the equipment without explicit authorization from the
manufacturer’s technical services
•
repair carried out by a person not certified by the manufacturer
•
adaptation to a specific application, not provided for in the definition of the
equipment or by the operating manual
•
an impact, a fall or flooding.
Unpacking repacking
Cleaning
All the equipment was verified mechanically and electrically before shipping.
When you receive it, carry out a quick check to detect any damage that may
have occurred during transport. If necessary, contact our sales department
immediately and register any legal reservations with the carrier.
In the event of reshipping, it is preferable to use the original package. Indicate
the reasons for the return as clearly as possible in a note attached to the
equipment.
•
Turn the instrument off.
•
Clean it with a damp cloth and soap.
•
Never use abrasive products or solvents.
•
Allow to dry before any further use.
4 100.000-count Graphical Multimeters
General instructions
General instructions (cont’d)
Measurement input protection systems
Special functions
Automatic current
measurement
detection
Auto power-off
These multimeters are equipped with several protection systems:
• Varistor protection clips any transient overvoltages on the measurement
terminals.
•
PTC (positive temperature coefficient) protection protects against permanent
overvoltages less than or equal to 1000 V during capacitance or resistance
measurements and diode tests.
This protection is reset automatically after the overload.
•
A fuse (11 A) provides protection during intensity measurements.
The number of input terminals is limited to 3: V, COM, A. Connection of the lead
to the "Ampere" terminal automatically selects the corresponding function.
When a function modification by the control keyboard is incompatible
with the lead connection, it triggers a buzzer and a visual alarm (LEADS).
The current measurement is performed using autorange over the whole range.
If the function is validated in the Sleep menu: the instrument shuts down
automatically after 30 minutes if no action has occurred on the front panel during
that time.
The instrument can be powered up again by pressing the key.
Automatic power-off is inhibited in:
•
Surveillance mode (SURV)
•
Memorize mode (MEM)
•
Communication mode (optical link - RS232C, USB, Bluetooth)
•
when the value measured (Voltage or Current) on the multimeter's
inputs exceeds the danger level.
Alert signal
Danger threshold
An intermittent buzzer sounds:
•
on the "Voltage" position, when the range is exceeded (MANUal and
AUTO mode - last range)
•
on the "Current" position, when the range is exceeded (MANUal) mode,
when 10 Amperes or more is measured
•
if the position of the leads and the function selected are incompatible
•
when the danger thresholds are exceeded (function activated)
When the range is exceeded, the buzzer is accompanied by display of "O. L".
When this symbol is activated:
•
the voltage on the "Volt" input exceeds 60 VDC or 30 VAC
•
the current injected between the "Ampere" and COM exceeds 10 A
•
the range is exceeded (voltage or current) in MANual mode
100.000-count Graphical Multimeters 5
Description of the instrument
Description of the instrument
Front panel
+ keyboards
(illustration)
ON/OFF
Key
Keyboards
Display
Jack connector
Terminal
strip
Lower casing
Rear (illustration
+ markings)
Measurement
terminal block
(illustration
+ markings)
6 100.000-count Graphical Multimeters
Description of the instrument
8 keys for selecting the
Description of the instrument (cont'd)
Front (description)
1 power on/off key
•
Starting the multimeter.
•
Stopping the multimeter.
If there is a multimeter malfunction, a long press (> 1 s) on this key can be
used to return to normal operation.
main functions
Voltage measurement or access to the measurement type: AC, DC or AC+DC
•
Selection using this key or the keys.
•
Validation using the key or after 2 s.
Current measurement or access to the measurement type: AC, DC or AC+DC
•
Selection using this key or the keys.
•
Validation using the key or after 2 s.
Measurement of Frequency (Hz) on a VAC voltage or access to the manual
frequency range < 900 kHz (default) or > 900 kHz.
A long press opens the menu for changing the voltage range.
•
Selection using the keys.
•
Validation using the or keys.
Voltage range quick change using the keys.
The selected range is recalled in the help line (i), see page 9.
Measurement of Resistance (Ohm)
By pressing again:
•
Access to the Continuity test ( )
•
Access to Diode test ( )
Measurement of Temperature or access to the types of temperature
measurements: ° C, ° F or K.
•
Selection using the keys.
•
Validation using the key or after 2 s.
•
By pressing this key during measurement type selection, you can access
the sensor type:
- platinum probes: Pt 100, Pt 1000 only on MTX 3282 and MTX 3283
- thermocouples: J (TC J), K (TC K)
•
Selection using the keys.
•
Validation using the key or after 2 s.
The selected scale is recalled in the help line (i), see page 9.
100.000-count Graphical Multimeters 7
Measurement of Capacitance
"Favourite" measurement configurable by the user.
A long press opens the "favourite" function configuration menu.
For the menu's configuration, see §. ☺ Function.
Description of the instrument
6 keys for activating the
Description of the instrument (cont'd)
Instrument Configuration menu.
This key can also be used to exit from a menu or submenu after validating it.
3 keys for navigation and
modification of the menus
•
instrument's various modes
•
•
•
•
Selection of the operating mode:
AUTO, AUTO PEAK ( MTX 3282, MTX 3283 ), MANU.
•
•
If the measurement is single range, the range defined is forced and there is no
effect if this key is pressed.
By pressing one of the keys, you can switch directly to MANUal mode and
then modify the range.
Selection of a menu or function (up/down navigation).
Increase or decrease of the variable selected.
Selection of a function (left/right navigation).
Modification of a function.
Movement within sub-menus.
Selection using this key or the keys.
Validation using the key or after 2 s.
Example: Diode test, continuity test and temperature measurement.
2 utility keys
Activation, deactivation of the REL (relative) mode.
When it is active, a long press opens a window for setting the reference.
Activation, deactivation of the display of the specifications for the function and
range selected.
Activation of HOLD or AUTO HOLD mode, deactivation NO HOLD.
•
Selection using this key or the keys.
•
Validation using the key or after 2 s.
Activation, deactivation of the SURV (surveillance) mode.
A long press opens a window for viewing the most recent records.
Closed by a short press.
Activation, deactivation of the MEM (automatic recording) mode.
A long press opens the MEM Function menu.
Back-lighting of the display in dark environments.
A long press opens the menu for adjusting the contrast on the LCD.
Selection of the functions for the 3 secondary displays.
•
Selection by successive presses on this key.
•
A long press can be used to exit from this mode.
8
100.000-count Graphical Multimeters
Description of the instrument
i
Recording started
1
-
i
Description of the instrument (cont'd)
Inputs
Display
(foot of the screen)
Graphical display
The graphical
window and the
bargraph constantly
track the evolution of
the measurement in the
range selected.
Input for voltage and frequency measurements, diode tests, resistance
measurements, continuity tests, and capacitance or temperature
measurements.
Input for current measurements.
Reference input.
•
The multimeters in this range are equipped with a graphical LCD screen
(58 mm x 58 mm) with 160 x 160 resolution for comfortable reading.
•
Reading of the LCD can be optimized by varying the orientation of the
display, the adjustment of contrast and, if necessary, using the backlighting.
•
The modes, the functions selected, the electrical or physical values
measured and the alert symbols are clearly shown on the display.
i
•
The user can call up help (i) regarding the function selected.
•
The main display is accompanied by its sign and the unit.
Depending on the current selections, the display may be graphical or digital:
The graphical window can be used to monitor the evolution of the principal
measurement.
Example
AUTO
1.5000
HOLD
Press the main function key …
DC
V
> 60s
Upper status line
Main display
0
1
0
Bargraph
Graphical window
Lower status line
Help on function
secondary functions
100.000-count Graphical Multimeters 9
Display of
The main display
and the bargraph
constantly track the
evolution of the
measurement.
The secondary displays are intended for the SPEC, REL, MEM, SURV and
888888 functions:
Example
AUTO
DC
V
V
V
V
V
1.5000
-10 0 10
MIN
-
1.0000
MAX
2.5000
2.5000
AVG
1.3000
SURV
MEM 2
Upper status line
Main display
Bargraph
Secondary display 1
Secondary display 2
Secondary display 3
Lower status line
Help on function
Functional description
Functional description
Preparation for use
Instructions before
activation
Instrument
power supply
Power on
To use this instrument, you must comply with the usual safety rules in order:
- to protect you against the dangers of the electric current,
- to protect the multimeter against incorrect operations.
For your safety, only use the leads delivered with the instrument. Before
using it, systematically check that it is in perfect condition.
•
The 3 multimeters in this range operate with three 1.5 V alkaline batteries
(LR6-AM3 AA) or three 1.2 V Ni-MH rechargeable batteries (accumulators)
of the same type:
The MTX 3281 is delivered with three 1.5 V alkaline batteries
(LR6-AM3 AA). It can operate with accumulators, but does not allow in
situ recharging (see §. Accessories delivered as options).
The MTX 3282 and MTX 3283 multimeters are delivered with three 1.2 V
Ni-MH accumulators and charger (12 VDC 7.2 VA) for mains operation
whilst simultaneously charging the batteries.
•
When the charger is connected directly to the instrument, the
accumulators can be recharged without removing them from the
multimeter.
•
The multimeter can only operate if the accu./batteries are in place.
Using the key opposite.
Charge indicator
A charge status indicator for the batteries or accumulators is constantly
shown on the display:
: Batteries or accumulators > 75 % charged
: Batteries or accumulators > 25 % charged
: minimum charge level < 25 %
The symbol flashes on the display and a buzzer sounds if the power
voltage is insufficient (only 30 min charge life).
As the specifications will no longer be guaranteed, you must then replace
the batteries or recharge the accumulators (see next page).
There can be differences between the display of the charge level (symbol)
and the real charge level of the accumulators, according to the quality and
the performances of those.
To avoid this risk, we recommend to use same accumulators (HX0051) as
those delivered by the manufacturer (see p. 43).
When getting started, the apparatus needs a few seconds to display a
correct level of charge (symbol).
10 100.000-count Graphical Multimeters
Functional description
☺
Functional description (cont'd)
Selection of
energy type
For correct management of the battery or accumulator charge status indicator,
the type of power must be selected:
•
Opening of the Configuration menu with the key.
•
Selection of the "General" function using the keys.
•
Validation of General settings using the key.
Configuration
General settings
General
Measure
Func.
Func. MATH
u
Recharging the
accumulators
•
Selection of Energy Type menu using the keys.
•
Modification of the Energy Type (battery or acc.) using the
•
Validation and exit from the successive menus using the key.
Before carrying out this operation, check that the accumulators are fitted in the
instrument ; they do not need to be removed from the multimeter to be
recharged.
Recharging is only possible if "Accumulator" has been selected in the Energy
Type menu (see above).
General
IR baud 9600
Config user
Energy bat.
Accumulator
Energy type
t
key.
If you try to recharge the accumulators when the batteries are fitted in the
multimeter, it could damage it.
For safety reasons, the accumulators should only be loaded at between 0 and
40°C.
✧
100.000-count Graphical Multimeters 11
Caution High internal temperature due to a current measurement may
trigger the thermal security mechanism.
Functional description
02600
mAh
Functional description (cont'd)
Recharging the
accumulators
(cont’d)
✧
•
Before carrying out this operation, select the capacity of the accumulators
(2600 mAh by default) fitted in the instrument:
•
Selection: Accumulator in the using the keys.
•
Validation: Accumulator using the key, opens a menu for setting the
accumulator capacity (in mAh):
•
Selection of the digit to be modified using the key.
•
Modification of the value using the key.
•
Validation of the accumulator capacity and exit from the successive menus
using the key .
To maintain the accumulators in good condition, run the accumulators
down to the minimum charge level before recharging.
Acc. capacity
Recharging the
accumulators with
multimeter off
•
Then connect the power pack (12 VDC, 7.2 VAC) to the jack connector
(see front panel illustration).
•
Connect the power pack (12 VDC, 7.2 VAC) to the mains supply.
The symbol opposite on the display allows you to monitor the charge status.
The accumulators are fully charged when the symbol is full .
The MTX 3282 and MTX 3283 multimeters contain Ni-MH accumulators.
These accumulators must be disposed of by a recycling firm or a company
specialized in the treatment of dangerous waste materials.
Never dispose of these accumulators with other solid waste.
For further information, contact your MANUMESURE dealer.
When the multimeter is delivered, the accumulators may be discharged,
requiring a complete recharge.
Do not connect the wall plug when
there are disponible batteries in the
instrument.
Connection of the wall plug starts
recharging the accumulators.
12 100.000-count Graphical Multimeters
The
recharging.
Once the accumulators have been fully recharged, the
instrument shuts down automatically.
scrolling symbol shows the progress of
Battery charging
Charge level:
75%……..100%
Functional description
fuse
slit for
Functional description (cont'd)
Wall plug
power unit
Recharging totally
discharged
accumulators
or new batteries
"A measurement”
protection fuse
Checking of current
measurement fuse
Use only the charger that is
delivered with this device, which
is a 2nd generation multimeter.
The charger from the previous
generation is not compatible.
1. Fit the batteries into the multimeter, then connect the charger.
2. Wait approximately 30 minutes, then press the ON button to switch on the
multimeter and follow the progress of the charge.
Average charging period : 7h30 (with 2600 mAh accumulators)
After one effective hour of recharging, the multimeter can be used for
measurements, by pressing again on the ON button.
A fuse provides protection up to 11 A for current measurements. It must be
replaced only with an identical fuse:
11 A, 20 kA, 1000 V, 10 x 38 mm (High Interrupting Capacity).
Test the current measurement as follows:
1. Select the Ampere function using the A key.
2. Connect a lead to the A terminal.
3. Check that the LEADS indication disappears from the display (presence of
lead). If this is not the case, replace the fuse.
Replacement of the
fuse or the batteries
Dismantling of
multimeter and
access to
battery/fuse
compartment
Before replacing the fuse or batteries, comply with the safety instructions given
at the beginning of this manual. Then:
1. Disconnect the test leads from the measurement circuits and the
instrument.
2. Disconnect the power lead from the MTX 3282 or MTX 3283 12 VDC
power pack.
3. Switch off the power to the instrument.
4. Undo the screw on the back of the instrument.
5. Pivot the rear cover of the casing to access the battery/fuse compartment.
6. Remove the fuse or batteries and replace them with identical models.
7. Replace the cover and retighten the screw.
Without batteries, the date and time are kept for ca. 1 min in the
instrument.
The measurements recorded are kept for an unlimited time.
batteries
screwdriver
100.000-count Graphical Multimeters 13
Functional description
Language
En
Functional description (cont'd)
Initial settings
Choice of language
Setting the
date and time
The general menu configures the parameters of the multimeter according to the
conditions of use and the user’s preferences.
•
Opening of the Configuration menu with the key.
•
Selection of the General menu using the keys and then the key.
General
Date/Time
Beep on
Sleep off
Set language
Choix langue
Selection of the language for the multimeter's menus.
Two options are available: French (Fr) or English (En, default).
Date and time
08 : 03 : 2005
10 : 03 : 45
•
•
•
General
Contrast
Back-light 10 s
Comm. IR
IR baud 9600
u
Back-light auto-off
delay
Selection of the variables using the key.
Modification of the value using
Clock validation and start-up when menu is
closed using key.
t
keys.
u
Activation of the
buzzer (Beep)
Automatic
shutdown (sleep)
Display contrast
Validation (default), or not , of audio signal (beep) when:
- a key is pressed,
- there is a voltage of more than 60 VDC or 30 VAC on the "V" input,
- a stable measurement is acquired in AUTO HOLD mode,
- the power supply voltage (battery) is insufficient.
The audio signal is maintained even when the buzzer is deactivated :
∗
during continuity testing,
∗ when the range is exceeded (voltage or current),
∗ on a 10 A measurement,
∗ if the position of the leads and the function selected are incompatible.
Validation (default), or not, of automatic shutdown (sleep) after 30 min if there
has been no action on the multimeter's front panel during that time.
In SURV, MEM and Communication modes, automatic shutdown is not
validated.
For your safety, automatic shutdown is inhibited when the values measured
(voltage, current) on the inputs exceed the danger thresholds (indicator opposite
displayed).
Contrast
• Modification of the value (default: 50 %)
using the key.
•
Validation of setting using
key.
14 100.000-count Graphical Multimeters
A long press on
directly opens the menu,
validates the setting.
Loading...