Extech Instruments 420 Dokumentacja Pobierz pdf (Strona 16)

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Extech Instruments
Multimetry
420
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16

V5.1‐March2010

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Figure 6

2. Press ◄ (yellow) or ► (yellow) to adjust the main time base. Press ▲ (yellow)

or▼ (yellow) to adjust the trigger horizontal position.

Press OPTION again and the following will appear:

◄/► – Time

▲/▼– Trig

See Figure 7:

Figure 7

4. Press ◄ (yellow) or ► (yellow) to adjust time base horizontal position, press▲

(yellow) or ▼ (yellow) to adjust trigger position.

5. Use the OPTION key to toggle between the two modes described above.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 108 109

Model MS460 - 60MHz 1
Model MS420 - 20MHz 1
INTRODUCTION 2
TABLE OF CONTENTS 3
(REFER TO THE FIG. 1 BELOW) 5
SAFETY INFORMATION 6
GENERALSAFETYINFORMATION 7
INPUT CONNECTIONS 9
Figure 3 10
V5.1‐March2010 11
BASIC OSCILLOSCOPE FUNCTIONS 12
MENUDESCRIPTION 15
SELECTINGAC‐COUPLING 25
—CH Math Volts/Div 27
—CH M Zero 27
Refer to Figure 18 28
ABOUTTHISCHAPTER 29
SETTING THE CHANNEL COUPLING 30
Figure 20: AC Coupling 31
ETTING THE PROBE ATTENUATION 32
INVERT A WAVEFORM 33
SETTINGTHETRIGGERSYSTEM 35
TRIGGERINGCONTROL 36
VIDEO TRIGGERING 37
Function 38
Settings Description 38
ALTERNATE TRIGGER 40
Coupling 41
Set trigger sensitivity 41
Description 43
Glossary of Terms 44
ACQUISITIONMODE 45
DISPLAYSETTING 45
DISPLAY STYLE 46
PERSISTENCE 47
XY MODE 47
STORINGWAVEFORMS 49
Auto-calibration 51
Autoscale 55
HORI—VERT 56
CURSORMEASUREMENTS 60
—Cursor 2 62
—Cursor 1 62
— FFT dB level 66
Figure 41 69
Selecting an FFT Window 69
Fig 42 - Rectangle window 71
Fig 43 - Blackman window 71
Fig.45 - Hamming window 72
SYSTEMSTATUSMENU 74
System Status 74
MAINTIMEBASEMODE 75
PCDATATRANSMISSION 76
User'sGuide  77
USING THE MULTIMETER 79
MEASURING RESISTANCE 81
MEASURING DIODE VOLTAGE 81
CONTINUITY TEST 83
Figure 4: Continuity Test 84
MEASURING CAPACITANCE 85
MEASURING DC VOLTAGE 85
MEASURING AC VOLTAGE 86
MEASURING DC CURRENT 87
MEASURING AC CURRENT 89
AKING A RELATIVE MEASUREMENT 92
APPENDICES 97
( T) measurement 98
+100ppm×reading+0.4ns) 98
±2V(5mV/div~200mV/div), 99
Measurement 100
MULTIMETER 101
10A ±3% ±3 digit 10mA 102
V4.0‐March2010 103
GENERAL SPECIFICATIONS 104
STORAGE OF INSTRUMENT 105
MAINTENANCE 105
Warranty(English) 108
Garantía(Español) 108
Garantie(Français) 109

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