Inhaltsverzeichnis; Introduction - Conrad M-4660M Bedienungsanleitung

Digital Multimeter M-4660M,
GB
Order-No. 12 48 00
Attention! Read before operation!
Read these operating instructions carefully and completely. In the case
of damage caused by ignoring the instruction, the claims under gua-
rantee lapse. No legal liability can be accepted for any damage from the
multimeter being used for the wrong purpose or operated improperly.
Thus cannot take any liability for consequential damage.
The proper operation of the measuring unit includes:
• measurement of DC voltage to 1000 VDC max in five steps
• measurement of AC voltge to 750 VAC max in five steps
• measurement of DC and AC currents to 20 A max., for max. 30 s (un-
fused), in 3 steps each
• measurement of resistance to 20 MΩ, in 6 steps
• measurement of capacity to max. 200 µF in 2 steps: Hi and Lo
• measurement of inductance (coils) up to 200 mH max.
• measurement of frequencies up to 20 MHz max.
• measurement of power up to 3680 W max. via the optionally available
item power adapter
• continuity check, diode and transistor test, logical test
• measurements under adverse environmental conditions is not permis-
sible. Adverse environmental conditions are:
- dampness or excessive atmospheric humidity,
- dust and combustible gases, vapors or solvents,
- storms, or stormy conditions, such as strong electrostatic fields, etc.
Other applications than those described above will damage the measu-
ring device, and are also liable to cause hazards, such as short-circuits,
fire, electrocution, etc. Nothing in the device should be changed or
modified! It is mandatory to observe the safety rules!
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Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Safety rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Description of the control elements . . . . . . . . . . . . . . . . . . . . . . . . 7
4. Use of the multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6. Maintenance and calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7. Technical data and accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

1. Introduction

This 4 1 / -digit Multimeter with multi-display is equipped with several
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special features which are useful fo some measurements:
With the key FUNC several special functions can be selected which are
supported by the buttons SET/R, UP and DOWN. These special functions
are shown in the top line of the display. The function D-H (= Data Hold)
for example, variable measuring values are "frozen" to use them after-
wards for further evaluation, e. g. measuring reports. The frozen value
can be read in the middle sub display.
With the next special function (A-H = Auto-Hold) the meter will auto-
matically record the minimum (= MIN), the maximum (= Max) and the
average (= AVG) display reading.
The next special funtion is the relative mode "RE"L, it enables the ope-
rator to compare a manually preset reference value with the subsequent
measurement. The three subdisplays show from the left to the rigth the
deviation in %, the difference to the reference value and the preset refe-
rence value.
With the function "MEMORY" up to 10 display contents can be stored
and be recalled with the function RCL later from the memory.
The special function "CMP" (= Comparison) enables you to compare a
reference value (High/Low) with the subsequent readings.
The function "LOGIC" included on the rotary function switch allows
measurement of various logic levels. In addition to the display Lo, - - - -
(=pass) and Hi, the level frequency and voltage level are shown in the
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