Extech Instruments 420 Dokumentacja Pobierz pdf (Strona 100)

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Extech Instruments
Multimetry
420
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

100

V4.0‐March2010

Trigger sensitivity (Video

triggering and typical

mode)

2 divisions of peak-to-peak value

Signal system and line/field

frequency (Video triggering

mode)

Supports NTSC, PAL and SECAM broadcasting

systems of any field or line frequency

Measurement

Cursor measurements Voltage difference and time difference between cursors

Auto measurements Peak-to-Peak voltage, mean voltage, root mean square

value, frequency and period

(MS4200nly):Vmax,Vmin,Vtop,Vbase,Width,

Overshoot,Pre‐shoot,Risetime,Falltime,﹢Width,

﹣Width,﹢Duty,﹣Duty,DelayA→B↑,DelayA→B↓

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 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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