VOLTCRAFT VDO-2052, VDO-2072, VDO-2102 User guide

WICHTIGER HINWEIS

VERSION 03/12

digitales speicheroszilloskop

BEST.-NR.: 12 24 42 / 12 24 43 / 12 24 44 / 12 24 52 / 12 24 54 / 12 24 55

Sehr geehrte Kundin, sehr geehrter Kunde,

bitte beachten Sie, dass Sie zur Installation der Software „Freewave“ unter der 64-Bit Version von Windows 7 die zwei folgenden Programme benötigen:

1. Microsoft .NET Framework Version 4.0 (Vollversion) Zum Download erhältlich unter:

http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=17718

2. Microsoft Visual C++ 2010 Redistributable Package (x64) Zum Download erhältlich unter:

http://www.microsoft.com/download/en/details.aspx?id=14632

Vielen Dank für Ihr Verständnis.

Ihr VOLTCRAFT-Team

Impressum

Dieser Hinweis ist eine Publikation von Voltcraft®, Lindenweg 15, D-92242 Hirschau, Tel.-Nr. 0180/586 582 7 (www.voltcraft.de).

Alle Rechte einschließlich Übersetzung vorbehalten. Reproduktionen jederArt, z. B. Fotokopie, Mikroverfilmung, oder die Erfassung in elektronischen Datenverarbeitungsanlagen, bedürfen der schriftlichen Genehmigung des Herausgebers. Nachdruck, auch auszugsweise, verboten.

Dieser Hinweis entspricht dem technischen Stand bei Drucklegung. Änderung in Technik und Ausstattung vorbehalten.

© Copyright 2012 by Voltcraft®

V1_0312_02-SB

IMPORTANT NOTE

VERSION 03/12

Digital Storage Oscilloscope

ITEM NO.: 12 24 42 / 12 24 43 / 12 24 44 / 12 24 52 / 12 24 54 / 12 24 55

Dear Customer,

please note that the following two programs are required for installing the “Freewave” software using the 64-bit version of Windows 7:

1. Microsoft .NET Framework Version 4.0 (full version) Available for download at:

http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=17718

2. Microsoft Visual C++ 2010 Redistributable Package (x64) Available for download at: http://www.microsoft.com/download/en/details.aspx?id=14632

Thank you for your kind attention.

Your VOLTCRAFT team

Legal notice

This note is a publication by Voltcraft®, Lindenweg 15, D-92242 Hirschau/Germany, Phone [phone] (www.voltcraft.de).

All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.

This note represents the technical status at the time of printing. Changes in technology and equipment reserved.

© Copyright 2012 by Voltcraft®

V1_0312_02-SB

REMARQUE IMPORTANTE

BELANGRIJKE INFORMATIE

Oscilloscope Numérique à Mémoire	VERSION 03/12
	Digitaal Geheugenoscilloscoop

VERSIE 03/12

Nº DE COMMANDE : 12 24 42 / 12 24 43 / 12 24 44 / 12 24 52 / 12 24 54 / 12 24 55

BESTELNR.: 12 24 42 / 12 24 43 / 12 24 44 / 12 24 52 / 12 24 54 / 12 24 55

Chère cliente, cher client,

Attention : l’installation du logiciel « Freewave » sous Windows 7 64 bits requiert les deux applications ci-après :

1. Microsoft .NET Framework Version 4.0 (version complète) Adresse de téléchargement :

http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=17718

2. Microsoft Visual C++ 2010 Redistributable Package (x64) Adresse de téléchargement :

http://www.microsoft.com/download/en/details.aspx?id=14632

Merci de votre attention.

Votre équipe VOLTCRAFT

Informations légales

Cette remarque est une publication de la société Voltcraft®, Lindenweg 15, D-92242 Hirschau/Allemagne, Tél. [phone] (www.voltcraft.de).

Tous droits réservés, y compris de traduction. Toute reproduction, quelle qu’elle soit (p. ex. photocopie, microfilm, saisie dans des installations de traitement de données) nécessite une autorisation écrite de l’éditeur. Il est interdit de le réimprimer, même par extraits.

Cette remarque correspond au niveau technique du moment de la mise sous presse. Sous réserve de modifications techniques et de l’équipement.

© Copyright 2012 by Voltcraft®

V1_0312_02-SB

Geachte klant,

denk er aan dat voor het installeren van de software “Freewave” onder de 64-bit versie van Windows 7 de twee onderstaande programma’s nodig zijn:

1. Microsoft .NET Framework Version 4.0 (complete versie) Voor download beschikbaar onder:

http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=17718

2. Microsoft Visual C++ 2010 Redistributable Package (x64) Voor download beschikbaar onder:

http://www.microsoft.com/download/en/details.aspx?id=14632

Dank u voor uw aandacht.

Uw VOLTCRAFT-team

Colofon

Deze informatie is een publicatie van de firma Voltcraft®, Lindenweg 15, D-92242 Hirschau/Duitsland, Tel. [phone]

(www.voltcraft.de).

Alle rechten, vertaling inbegrepen, voorbehouden. Reproducties van welke aard dan ook, bijvoorbeeld fotokopie, microverfilming of de registratie in elektronische gegevensverwerkingsapparatuur, vereisen de schriftelijke toestemming van de uitgever. Nadruk, ook van uittreksels, verboden.

Deze informatie voldoet aan de technische stand bij het in druk bezorgen. Wijziging van techniek en uitrusting voorbehouden.

© Copyright 2012 by Voltcraft®

V1_0312_02-SB

DIGITAL STORAGE OSCILLOSCOPE

OPERATING INSTRUCTIONS

Item No. :

12 24 42 VDO-2052 / 50 MHz

12 24 43 VDO-2072 / 70 MHz

12 24 44 VDO-2102 / 100 MHz

Version 08/11

TABLE OF CONTENTS

1.	INTRODUCTION	7
2.	SAFETY INSTRUCTIONS	8
	Safety Symbols	8
	Safety Guidelines	9
	Power cord for the United Kingdom	12
3.	GETTING STARTED	13
	Main Features	13
	Panel Overview	15
	Front Panel	15
	Rear Panel	19
	Display	20
	Setting up the Oscilloscope	21
4.	QUICK REFERENCE	24
	Menu Tree and Shortcuts	24
	CH1/CH2 key	25
	Cursor key 1/2	26
	Cursor key 2/2	26
	Display key	27
	Autoset key	27
	Hardcopy key	27
	Help key	27
	Horizontal menu key	28
	Math key 1/2 (+/-)	28
	Math key 2/2 (FFT)	29
	Measure key	30
	Run/Stop key	30
	Save/Recall key 1/9	31
	Save/Recall key 2/9	31
	Save/Recall key 3/9	32
	Save/Recall key 4/9	32
	Save/Recall key 5/9	33
	Save/Recall key 6/9	33
	Save/Recall key 7/9	34
	Save/Recall key 8/9	35
	Save/Recall key 9/9	35

2

Trigger key 1/5	36
Trigger key 2/5	36
Trigger key 3/5	37
Trigger key 4/5	37
Trigger key 5/5	38
Utility key 1/10 (Utility #1)	38
Utility key 2/10 (Utility #2)	39
Utility key 3/10 (Utility #3)	40
Utility key 4/10 (Hardcopy - Save All)	40
Utility key 5/10 (Hardcopy - Save Image)	40
Utility key 6/10 (Probe compensation)	41
Utility key 7/10 (Go-NoGo)	41
Utility key 8/10 (Data Logging 1/2)	42
Utility key 9/10 (Data Logging 2/2)	42
Utility key 10/10 (Self CAL Menu)	42
Default Settings	43
Built-in Help	44
5. MEASUREMENT	45
Basic Measurements	45
Activating a channel	45
Using Autoset	46
Running and stopping the trigger	47
Changing the horizontal position and scale	48
Changing the vertical position and scale	49
Using the probe compensation signal	50
Automatic Measurements	52
Measurement items	52
Automatically measuring the input signals	54
Cursor Measurements	55
Using the horizontal cursors	55
Using the vertical cursors	56
Math Operations	58
Overview	58
Adding or subtracting signals	59
Using the FFT function	59
Go No-Go Testing	61
Overview	61

3

Edit: NoGo When	62
Edit: Source	62
Edit: NoGo Violation Conditions	63
Edit: Template (boundary)	63
Run Go-NoGo Tests	67
Data Logging	68
Overview	68
Edit: Source	69
Edit: Setup Parameters	69
Run Data logging	71
6. CONFIGURATION	72
Acquisition	72
Selecting the acquisition mode	72
Real time vs Equivalent time sampling mode	75
Display	76
Selecting vector or dot drawing	76
Accumulating the waveform	76
Adjusting the display contrast	77
Selecting the display grid	77
Horizontal View	78
Moving the waveform position horizontally	78
Selecting the horizontal scale	78
Selecting the waveform update mode	79
Zooming the waveform horizontally	80
Viewing waveforms in the X-Y mode	81
Vertical View (Channel)	82
Moving the waveform position vertically	82
Selecting the vertical scale	82
Selecting the coupling mode	82
Inverting the waveform vertically	83
Limiting the waveform bandwidth	83
Selecting the probe attenuation level	84
Trigger	85
Trigger type	85
Trigger parameter	85
Configuring the edge trigger	87
Configuring the video trigger	89

4

	Configuring the pulse width trigger	90
	Manually triggering the signal	91
	Rear Panel USB Port Interface	93
	System Settings	94
	Viewing the system information	94
	Selecting the language	94
7.	SAVE/RECALL	96
	File Structures	96
	Display image file format	96
	Waveform file format	96
	Setup file format	98
	Using the USB file utilities	99
	Quick Save (HardCopy)	101
	Save	103
	File type/source/destination	103
	Saving the panel settings	104
	Saving the waveform	105
	Saving the display image	106
	Saving all (panel settings, display image, waveform)	108
	Recall	110
	File type/source/destination	110
	Recalling the default panel settings	111
	Recalling a reference waveform to the display	112
	Recalling panel settings	112
	Recalling a waveform	113
8.	MAINTENANCE	116
	Vertical Resolution Calibration	116
	Probe Compensation	117
9.	FAQ	119
	The input signal does not appear in the display.	119
	I want to remove some contents from the display.	119
	The waveform does not update (frozen).	120
	The probe waveform is distorted.	120
	Autoset does not catch the signal well.	120
	I want to clean up the cluttered panel settings.	120
	The saved display image is too dark on the background.	120
	The accuracy does not match the specifications.	121

5

10.	APPENDIX	122
	Fuse Replacement	122
	VDO-2000 Series Specifications	123
	Model-specific specifications	123
	Common specifications	124
	Probe Specifications	126
	VDO-2052 Probe	126
	VDO-2072 Probe	126
	VDO-2102 Probe	127
	Dimensions	128
11.	DISPOSAL	128

6

1. INTRODUCTION

Dear Customer,

In purchasing this Voltcraft® product, you have made a very good decision for which we would like to thank you.

Voltcraft® - In the field of measuring, charging and network technology, this name stands for high-quality products which perform superbly and which are created by experts whose concern is continuous innovation.

From the ambitious hobby electronics enthusiast to the professional user, products from the Voltcraft® brand family provide the optimum solution even for the most demanding tasks. And the remarkable feature is: we offer you the mature technology and reliable quality of our Voltcraft® products at an almost unbeatable price-performance ratio. In this way, we aim to establish a long, fruitful and successful co-operation with our customers.

We wish you a great deal of enjoyment with your new Voltcraft® product!

All names of companies and products are trademarks of the respective owner. All rights reserved.

7

2. SAFETY INSTRUCTIONS

This chapter contains important safety instructions that should be followed when operating and storing the oscilloscope. Read the following before any operation to ensure your safety and to keep the oscilloscope in the best condition.

Safety Symbols

These safety symbols may appear in this manual or on the oscilloscope.

Warning: Identifies conditions or practices that could result in injury or loss of life.

WARNING

Caution: Identifies conditions or practices that could result in damage to the oscilloscope or to other objects or property.

CAUTION

DANGER High Voltage

Attention: Refer to the Manual

Protective Conductor Terminal

Earth (Ground) Terminal

8

Safety Guidelines

General	•	Make sure the BNC input voltage does not exceed 300V peak.
Guideline	•	Never connect a hazardous live voltage to the ground side of the BNC
		connectors. It might lead to fire and electric shock.
	• Do not place heavy objects on the oscilloscope.
	• Avoid severe impact or rough handling that may damage the oscilloscope.
	• Avoid discharges of static electricity on or near the oscilloscope.
	• Use only mating connectors, not bare wires, for the terminals.
	• Do not block the cooling fan vent.
	• Do not perform measurements at power sources and building installation sites
		(Note below).
	• The oscilloscope should only be disassembled by a qualified technician.
	(Measurement categories) EN 61010-1:2001 specifies the measurement
	categories and their requirements as follows. The unit falls under category II.
	• Measurement category IV is for measurement performed at the source of a
		low-voltage installation.
	•	Measurement category III is for measurement performed in a building
		installation.

• Measurement category II is for measurement performed on circuits directly connected to a low voltage installation.

• Measurement category I is for measurements performed on circuits not directly connected to Mains.

9

Power Supply • AC Input voltage: 100 ~ 240V AC, 47 ~ 63Hz

•The power supply voltage should not fluctuate more than 10%.

•Connect the protective grounding conductor of the AC power cord to an earth ground.

WARNING

	Fuse	•	Fuse type: T1A/250V
		• To ensure fire protection, replace the fuse only with the specified type and
			rating.
		• Disconnect the power cord before replacing the fuse.
		• Make sure the cause of fuse blowout is fixed before replacing the fuse.
	Cleaning the	•	Disconnect the power cord before cleaning the oscilloscope.
	oscilloscope	• Use a soft cloth dampened in a solution of mild detergent and water. Do not
			spray any liquid into the oscilloscope.
		• Do not use chemicals containing harsh products such as benzene, toluene,
			xylene, and acetone.
	Operation	•	Location: Indoor, no direct sunlight, dust free, almost non-conductive pollution
	Environment		(Note below)
		•	Relative Humidity:	≤ 80%, 40°C or below
				≤ 45%, 41°C~50°C
		•	Altitude:	< 2000m
		•	Temperature:	0°C to 50°C

10

(Pollution Degree) EN 61010-1:2001 specifies pollution degrees and their requirements as follows. The oscilloscope falls under degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”.

•Pollution degree 1: No pollution or only dry, non-conductive pollution occurs.

The pollution has no influence.

•Pollution degree 2: Normally only non-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

•Pollution degree 3: Conductive pollution occurs, or dry, nonconductive pollution occurs which becomes conductive due to condensation which is expected. In such conditions, equipment is normally protected against exposure to direct sunlight, precipitation, and full wind pressure, but neither temperature nor humidity is controlled.

Storage	•	Location:	Indoor
environment	•	Storage Temperature:	-10°C~60°C, no condensation
	•	Relative Humidity:	93%	@ 40°C
			65%	@ 41°C ~60°C

11

Power cord for the United Kingdom

When using the oscilloscope in the United Kingdom, make sure the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with the following code:\

Green / Yellow:	Earth
Blue:	Neutral
Brown:	Live (Phase)

As the colours of the wires in main leads may not correspond with the coloured marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth terminal marked with either the letter E, the earth symbolor coloured Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the supplier.

This cable/appliance should be protected by a suitably rated and approved HBC mains fuse: refer to the rating information on the equipment and/or user instructions for details. As a guide, a cable of 0.75mm2 should be protected by a 3A or 5A fuse. Larger conductors would normally require 13A types, depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off the mains power and remove the cable, any fuses and fuse assemblies. All hazardous wiring must be immediately destroyed and replaced in accordance to the above standard.

12

3. GETTING STARTED

The Getting started chapter introduces the oscilloscope’s main features, appearance, and set up procedure.

Main Features

Model name	Frequency bandwidth		Input channels
VDO-2052	DC –50MHz (–3dB)		2
VDO-2072	DC – 70MHz (–3dB)		2
VDO-2102	DC – 100MHz (–3dB)		2
Performance	• 250MSa /S real-time sampling rate
	• 25GS/s equivalent-time sampling rate
	• Up to 10ns peak detection
	•	2mV~10V vertical scale
Features	• 5.6 inch color TFT display
	• Saving and recalling setups and waveforms
	•	19 automatic measurements
	• Multi-language menu (12 languages)
	• Math operation: Addition, Subtraction, FFT
	•	Data logging
	• Go-NoGo testing
	• Edge, video, pulse width trigger
	• Compact size: (W) 310 x (D) 140 x (H) 142 mm

13

Interface	•	USB 2.0 full-speed interface for saving and recalling data
	•	Calibration output
	•	External trigger input
	• USB B type (slave) interface for remote control

14

Panel Overview

Front Panel

LCD display	TFT color, 320 x 234 resolution, wide angle view LCD display.
Function keys:		Activates the functions which appear in the left side of
F1 (top) to		the LCD display.
F5 (bottom)
Variable knob	VARIABLE	Increases or decreases values and moves to the next
		or previous parameter.
Acquire key	Acquire
Display key	Display
Cursor key	Cursor	Runs cursor measurements (page 55).

15

	Utility key	Utility	Configures the Hardcopy function (page 101), shows
			the system status (page 94), selects the menu
			language (page 94), runs the self calibration (page
			116), configures the probe compensation signal
			(page 117), and selects the USB host type (page 93).
	Help key	Help	Shows the Help contents on the display (page 44).
	Autoset key	Autoset	Automatically configures the horizontal, vertical, and
			trigger settings according to the input signal (page 46).
	Measure key	Measure	Configures and runs automatic measurements
			(page 52).
	Save/Recall key	Save/Recall	Saves and recalls images, waveforms, or panel settings
			(page 96).
	Hardcopy key	Hardcopy	Stores images, waveforms, or panel settings to USB
			(page 101).
	Run/Stop key	Run/Stop	Runs or stops triggering (page 47).
	Trigger level	TRIGGER	Sets the trigger level (page 85).
	knob	LEVEL
	Trigger menu	MENU	Configures the trigger settings (page 85).
	key
	Single trigger	Single	Selects the single triggering mode (page 91).
	key
	Trigger force	FORCE	Acquires the input signal once regardless of the trigger
	key		condition at the time (page 91).

16

Horizontal menu	MENU	Configures the horizontal view (page 78).
key
Horizontal		Moves the waveform horizontally (page 78).
position knob
TIME/DIV knob	TIME/DIV	Selects the horizontal scale (page 78).
Vertical position		Moves the waveform vertically (page 82).
knob
CH1/CH2 key	CH1	Configures the vertical scale and coupling mode for
		each channel (page 82).
VOLTS/DIV	VOLTS/DIV	Selects the vertical scale (page 82).
knob
Input terminal	CH1	Accepts input signals: 1MΩ±2% input impedance, BNC
		terminal.
Ground terminal		Accepts the DUT ground lead to achieve a common
		ground.
MATH key	MATH	Performs math operations (page 58).
USB port		Facilitates transferring waveform data, display images,
		and panel settings (page 99).
Probe		Outputs a 2Vp-p, square signal for compensating the
compensation		probe (page 117) or demonstration.
output
External trigger	EXT TRIG	Accepts an external trigger signal (page 85).
input

17

Power switch

Powers the oscilloscope on or off.

18

Rear Panel

Power cord	Power cord socket accepts the AC mains, 100 ~ 240V,
socket	50/60Hz.
Fuse socket	The fuse socket holds the AC main fuse, T1A/250V.
	For the fuse replacement procedure, see page 122.
USB slave port	Accepts a type B (slave) male USB connector for
	remote control of the oscilloscope (page 93).
Calibration	Outputs the calibration signal used in vertical scale
output	accuracy calibration (page 116).
Security lock	Standard laptop security lock slot for ensuring the secu-
slot	rity of the VDO-2000.

19

Display

Waveforms	Channel 1: Yellow	Channel 2: Blue
Trigger status	Trig’d	A signal is being triggered
	Trig?	Waiting for a trigger condition
	Auto	Updating the input signal regardless of trigger condi-
		tions
	STOP	Triggering is stopped
	For trigger setting details, see page 84.
Input signal	Updates the input signal frequency (the trigger source signal) in real-time.
frequency	“< 2Hz” Indicates that the signal frequency is less than the lower frequency limit
	(2Hz) and thus not accurate.
Trigger	Shows the trigger source, type, and slope. In case of the Video trigger, shows
	the trigger source and polarity.
Horizontal status
Vertical status	scale.

20

Setting up the Oscilloscope

Background	This section describes how to set up the oscilloscope properly including adjusting
	the handle, connecting a signal, adjusting the scale, and compensating the
	probe. Before operating the oscilloscope in a new environment, run these steps
	to make sure the oscilloscope is functionally stable.

Procedure	1.	Pull both bases of the handle out
		slightly.
	2.	Turn to one of the three preset
		positions.

3. Connect the power cord.

4.Press the power switch. The display will become active in approximately 10 seconds.

5. Reset the system by recalling the	Save/Recall
factory settings. Press the Save/
Recall key, then Default Setup.
For details regarding the factory
settings, see page 43.

Default

Setup

21

6.Connect the probe between the Channel1 input terminal and probe compensation signal output (2Vp-p, 1kHz square wave).

7.Set the probe attenuation voltage to x10.

8.	Press the Autoset key. A square	Autoset
	waveform will appear in the center of
	the display. For details on Autoset, see
	page 46.
9.	Press the Display key, then Type and	Display
	select the vector waveform type.			Type
				Vectors

22

10.Turn the adjustment point on the probe to flatten the square waveform edge.

Over		Under
Compensation	Normal	Compensation

11.Setting up the oscilloscope is completed. You may continue with the other operations.

Measurement: page 45 Configuration: page 72

23

4. QUICK REFERENCE

This chapter lists the oscilloscope menu tree, operation shortcuts, built-in help coverage, and default factory settings. Use this chapter as a handy reference to access the oscilloscope functions.

Menu Tree and Shortcuts

Conventions	Examples
Normal	= Press the functional key for “Normal”
Average	= Repeatedly press the functional key for “Average”
Normal ~ Average	= Select a menu from “Normal” to “Average” and press its functionality key
Normal→VAR	= Press the functionality key for “Normal”, and then use the Variable knob

24

		Acquire						Select acquisition mode
								Normal ~ Peak-Detect
								Select average number
		Normal						Average
						2/ 4/ 8/ 16/ 32/		Turn Delay on/off
		Average
						64/ 128/	256
		Peak
		Detect
		Sample Rate
		500MS/s
CH1/CH2 key
		CH 1						Turn channel on/off
								CH 1/2
								Select coupling mode
		Coupling						Coupling
								Invert waveform
		Invert				On/ Off
		Off						Invert
		BW Limit				On/ Off		Turn bandwidth limit on/off
		Off
								BW Limit
		Probe				x1/ x10/ x100
		x1						Select probe attenuation
								↔ Probe

25

Cursor key 1/2

	Cursor		Turn cursor on/off
			Cursor
	Source		Move X1 cursor
		CH1/ 2/ MATH	X1	VAR
	CH1
	X1		Move X2 cursor
	123.4us		X2	VAR
	212.0mV
	X2		Move both X1 and X2 cursor
	22.9us
			X1X2	VAR
	0.000V
	X1X2		Switch to Y cursor
	23.6us
	11.9Hz		X ↔ Y
	212.0mV
	X	Y

Cursor key 2/2

	Cursor			Turn cursor on/off
				Cursor
	Source			Move Y1 cursor
			CH1/ 2/ MATH	Y1	VAR
	CH1
	Y1			Move Y2 cursor
	123.4mV			Y2	VAR
	Y2
				Move both Y1 and Y2 cursor
	12.9mV
	Y1Y2			Y1Y2	VAR
	10.5mV			Switch to X cursor
	X	Y		X ↔ Y

26

	Display key
	Display		Select waveform type
			Type
	Type	Vectors/ Dots	Waveform accumulate On/Off
	Vectors		Accumulate
	Accumulate	On/ Off	Refresh accumulation
	Off
			Refresh
	Refresh
			Set display contrast
	Contrast
			Contrast	VAR
	Full		Select display grid

Autoset key

Autoset Automatically find the signal and set the scale

Autoset

Hardcopy key

Hardcopy

See Utility key (page 38)

Help key

Help

Turn help mode on/off

Help

27

Horizontal menu key

	MENU		Select main (default) display
			Main
			Select window mode
	Main
			Window		TIME/DIV
			Zoom in window mode
	Window
			Window Zoom
	Window		Select window roll mode
	Zoom
			Roll
	Roll
			Select XY mode
			XY
	XY

Math key 1/2 (+/-)

MATH

Operation

CH1+CH2

Position

0.00 Div

Unit/Div

2V

28

CH1+CH2

CH1-CH2

FFT

-12div ~ +12div

200mV~10V/div

Math on/off Math

Select math operation type (+/–/FFT) Operation

Set result position Position VAR

Math result Volt/Div Unit/Div VAR