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.................................
General instructions General instructions Introduction You have just acquired a 100,000-count graphical multimeter for electronics technicians, allowing direct measurement of the principal electrical values. Congratulations on your choice and thank you for your trust in our products. It complies with safety standard EN 61010-1 (2001), double insulation, relative to electronic measuring instruments.
General instructions General instructions (cont’d) • Safety features It is impossible to access the battery or fuse compartment without first disconnecting the measurement leads. • When measuring voltages greater than 60 V or 30 V , the symbol flashes on the display. •...
General instructions General instructions (cont’d) These multimeters are equipped with several protection systems: Measurement input 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.
Description of the instrument 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. 8 keys for selecting the main functions Voltage measurement or access to the measurement type: AC, DC or AC+DC •...
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Description of the instrument 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 • Selection of a menu or function (up/down navigation). •...
Description of the instrument Description of the instrument (cont'd) Inputs 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 Display (58 mm x 58 mm) with 160 x 160 resolution for comfortable reading.
(LR6-AM3 AA) or three 1.2 V Ni-MH rechargeable batteries (accumulators) of the same type: 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).
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Functional description Functional description (cont'd) • keys . Selection of Energy Type menu using the General IR baud 9600 Config user Energy bat. Accumulator Energy type • Modification of the Energy Type (battery or acc.) using the key. • Validation and exit from the successive menus using the key.
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Functional description Functional description (cont'd) Recharging of Do not connect the power supply accumulators with when there are disponible batteries multimeter off in the instrument. Connection of the power supply start recharging of the accumulators. Battery charging Connection of the power supply start recharging of the accumulators. symbol shows the progress of recharging.
Functional description Functional description (cont'd) The general menu configures the parameters of the multimeter according to the Initial settings 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.
Functional description Functional description (cont'd) Adjustment of Selection of the back-lighting deactivation time to limit the multimeter's energy back-lighting consumption. 6 times are possible: 10 s, 30 s, 1 min, 2 min, 10 min or infinite (no deactivation). By default, the back-lighting deactivation time is 2 min. •...
Functional description Functional description (cont'd) Adjustment of the reference resistance value (W REF) between 1 Ω and W REF 10,000 Ω for resistive power measurements: MTX 3283 The calculation performed is: (voltage measured) / W REF (unit W) ∗ W REF (unit W) (current measured) The adjustment procedure is the same as for the dBm reference resistance.
Functional description Functional description (cont'd) Access to main functions The input terminals are limited to 3 : COM, V, Ω, Connection of leads and A. Connect the black lead to the COM socket (for all measurements). Functions authorized when connected on Ω...
Functional description Functional description (cont'd) Range management key gives access to three operating modes: - AUTO mode - AUTO PEAK mode MTX 3282, MTX 3283 - MANU mode • Selection using this key or the keys. • Validation using the key or after 2 s.
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Functional description Functional description (cont'd) REL mode takes the current main measurement as its reference. It is indicated on the secondary display: REF. • The main display continues to indicate the instantaneous value measured and the bargraph. The secondary display ∆ indicates the absolute deviation between the •...
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(AVG). For each value memorized, the multimeter records the corresponding date and time. When it is started up, the MTX 3281 reinitializes the date and time (01:01:2000, 00 :00 :00). Before starting work, set the correct date and time to "date-stamp" the records see §.
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The number of values to be memorized for a measurement run is programmable: it therefore stops recording automatically. Another press on starts a new series of recordings. 158 measurements per sequence 1 to 10 sequences MTX 3281 Recording 1 to 10 sequences capacity MTX 3282, MTX 3283 6500 measurements maximum...
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Functional description Functional description (cont'd) Configuration of The MEM mode is configured in the Func. MEM function of the Configuration MEM mode Menu. • Opening of the Configuration menu with the key. • Selection of the "Func. MEM" function using the keys.
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Functional description Functional description (cont'd) By defining a number of records for a measurement campaign, it is possible to Programming of the stop recording automatically. number of records • Selection of the number of records (No. rec.) in the MEM Function menu using the keys MEM Function Erase...
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Example: Main function: V secondary function: MIN, MAX, AVG for SURV mode moves the cursor MTX 3281 moves the zoomed part (icon present, if a zoom is active) MTX 3282, MTX 3283 activates/deactivates a zoom (icon present, if a zoom is possible) •...
Functional description Functional description (cont’d) Access to secondary functions Choice of secondary functions on the two displays 2, 3 and 4 by pressing successively on the key opposite according to main measurement. A long pressing deletes the display of secondary measurements. For the main authorised measurements, the last combination selected for displays 2, 3 and 4 is memorised and will be directly reactivated.
Functional description Functional description (cont’d) The MATH function (y = Ax + B) enables measuring any physical quantity in: MATH function - Volts (0 - 10 V process or high-voltage probe, for example) MTX 3282 - Amperes (current loop 4 - 20 mA or current clamp, for example) MTX 3283 - Frequency (output measurement, rotation speeds, for example)
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Functional description Functional description (cont’d) Definition of The MATH function applied to the physical quantity (x) measured is y = Ax + B. • coefficient A Selection of the coefficient A menu (Coef A) in MATH function. • Validation of Coef A (coefficient A) using key Coef.
Functional description Functional description (cont’d) ☺ ☺ ☺ ☺ ☺ The favourite function recalls directly the specific measurement you use most Function frequently and that you will have carefully defined previously. This function is of the same type as the MATH function (y = Ax + B). When you measure any physical quantity, this function enables you to convert it and to assign the appropriate unit, to obtain the direct reading of the original amount on the instrument.
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Functional description Functional description (cont’d) Selection of • Selection of adjustment parameters using keys adjustment parameters ☺ Function Function Coef A Coef B Unit Function selection Selection of amount • Selection of Function menu using keys measured (function) Selection of amount measured (V, A, Ω, Hz) using key •...
Functional description Functional description (cont’d) These multimeters can interface directly with a computer or a PC using the SX-DMM SX-DMM software kit (HX0050 option): Software kit (option) In the menu General settings of the multimeter: - Select infra-red communication (IR by default) using the Comm function. - Select the infra-red transmission speed using the IR baud function: 9600 / 19,200 / 38,400 Bauds/s.
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Functional description Functional description (cont’d) Bluetooth (cont’d) Creating a The controls cited below are those of the PC USB/Bluetooth adapter Bluetooth P01637301 ). They may be designated differently on another adapter. connection Steps Actions (for first connection only) Power up the multimeter. Configure it for Bluetooth (BT) via the configuration menu.
On this position, you measure the true RMS value of an AC voltage with its DC AC voltage component (no capacitive coupling): so-called T measurement. and V AC+DC The 100 mV range is present in MANUal mode only. MTX 3281 Accuracy Input Range Resolution Protection 45 Hz to...
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AC voltage, once the filter is activated, see p. 14. The 100 mV range is present in MANUal mode only. Range Input impedance Resolution Protection Accuracy MTX 3281 1 µV 0.1% + 30D 100 mV (∗) 10 MΩ / 1 GΩ 1000 mV 10 µV 20 MΩ...
" mode, you measure the value of a DC current or the DC component of DC current an AC current. Range Input impedance Resolution Protection Accuracy MTX 3281 approx. 170 Ω 1000 µA 10 nA 0.1% + 15D MTX 3282 approx. 17 Ω 10 mA...
Main frequency (Hz) In this position, you measure the frequency of a voltage. AC Signals Range Resolution Protection Accuracy MTX 3281 0.8 to 10 Hz 0.0001 Hz MTX 3282 10 to 100 Hz 0.001 Hz MTX 3283 100 to 1000 Hz 0.01 Hz...
Measurement zero reset : by pressing the key Accuracy and rate: id. specifications Volt and Ampere measurements SURV Function MTX 3281, MTX 3282, MTX 3283 (MIN, MAX, AVG) Display of measurement in relative power in relation to a resistance reference Resistive power W (W REF) adjustable from 1 to 10,000 Ω, factory-adjusted to 50 Ω.
Additional error on measurement caused by slope when crossing zero: see §. Measurement of duty ratio. For negative events, cross the cables. Clock MTX 3281 Relative time with reset to zero at each powering up MTX 3282, MTX 3283 Real-time clock ≈...
Operating range - 10° C to 55° C Storage range - 40° C to 70° C Power supply 2 possibilities: MTX 3281 Batteries 3 x 1.5 V alkaline LR6-AM3 AA Accumulators 3 x 1.2 V Ni-MH 2200 mAh AA 3 possibilities:...
: SEBS • Sealing IP 40 (EN 60529) • Packaging Dimensions 240 (L) x 158 (W) x 65 (H) in mm MTX 3281 297 (L) x 158 (W) x 60 (H) in mm MTX 3282, MTX 3283 100,000-count graphical multimeters...
Index 888888 (function) dBm measurement dBm REF absolute deviation AC voltage DC voltage AC, AC+DC Accessories 3, 40 diode measurement 9, 35 accumulators 10, 11 display 6, 9, 39 activation (powered) 6, 10 duty ratio alert symbols amount measured 27, 28 Ampere (function) 5, 12 audio warning...
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Index Pt1000 (sensor) help (i) pulse counting HOLD (mode) 8, 17 pulse width humidity I - J - K range 7, 28 impedance range (control) initial settings range exceeded 5, 13 inputs recharge (charge) IR baud recorded data J (thermocouple) recorder jack connector 6, 11...
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