GW Instek GRS-6000A User Manual

GRS-6052A/6032A OSCILLOSCOPE

Declaration of Conformity

GOOD WILL INSTRUMENT CO., LTD.

No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan

GOOD WILL INSTRUMENT (SUZHOU) CO., LTD.

No.69 Lushan Road, Suzhou New District Jiangsu, China.

declares that the below mentioned product

GRS-6052A, GRS-6032A

are herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility (89/336/EEC, 92/31/EEC, 93/68/EEC) and Low Voltage Equipment Directive (73/23/EEC, 93/68/EEC). For the evaluation regarding the Electromagnetic Compatibility and Low Voltage Equipment Directive, the following standards were applied:

◎ EMC

EN 61326-1: Electrical equipment for measurement, control and laboratory use –– EMC

requirements (1997+A1: 1998)

Conducted and Radiated Emission EN 55011: 1998 Group I class A

Current Harmonic IEC 61000-3-2: 1995 Voltage Fluctuation IEC 61000-3-3: 1994

-------------------------

◎ Safety

Low Voltage Equipment Directive 73/23/EEC & amended by 93/68/EEC

Safety Requirements IEC/EN 61010-1:2001

Electrostatic Discharge IEC 61000-4-2: 1995 Radiated Immunity IEC 61000-4-3: 1995 Electrical Fast Transients IEC 61000-4-4: 1995 Surge Immunity IEC 61000-4-5: 1995 Conducted Susceptibility IEC 61000-4-6: 1996 Power Frequency Magnetic Field IEC 61000-4-8: 1993 Voltage Dips/ Interrupts IEC 61000-4-11: 1994

USER MANUAL

CONTENTS PAGE

1. PRODUCT INTRODUCTION......................... ........... ........... ..

1-1.Description……………………………………………….

1-2.Feature…………………………………………………....

1 1 2

2. TECHNICAL SPECIFICATIONS………………………… 5

3. PRECAUTIONS BEFORE OPERATION…….…………... 3-1.Unpacking the Oscilloscope……………….…… …….… 3-2.Checking the Line Voltage…………………..………….. 3-3.Environment……………………………………..………

3-4.Equipment Installation and Operati on………………... .

3-5.CRT Intensity…………………………………………… 3-6.Withstanding Voltage of Input Termi nals……… ……...

4. PANEL INTRODUCTION……………………..…………... 4-1.Front Panel………………………………………………. 4-2.Rear Panel……………………………………….……….

5. OPERATION METHOD………………………………...…. 5-1.Readout Display……………………………………..…... 5-2.Connecting Input Signals..……………………………… 5-3.Adjustment and Checks………………………………… 5-4.Function Check…..………………………………………

5-5.Basic Operation………….….…………………………....

5-6.Digital Storage Functions……………………………….. 5-7.Measurement Application………………………………. 5-8.RS-232 Interface Remote Control………………………

6. MAINTENANCE…………………………………………… 6-1.Fuse Replacement……………………………………….. 6-2.Line Voltage Conversion……………………………..…. 6-3.Cleaning………………………………………………….

9 9 9 10 10 10 10

11 13 32

34 34 37 38 40 42 51 60 62

94 94 94 95

7. BLOCK DIAGRAM………………………………………... 96

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SAFETY TERMS AND SYMBOLS

These terms may appear in this manual or on the product:

WARNING. Warning statements identify condition or practices that could result in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.

Measurement category I is for measurements performed on circuits not directly

connected to MAINS. Measurement category II is for measurements performed on circuits directly connected to the low voltage installation. Measurement category III is for measurements performed in the building installation. Measurement category IV is for measurements performed at the source of the low-voltage installation.

The following symbols may appear i n this man ual or on the pr oduct:

USER MANUAL

FOR UNITED KINGDOM ONLY

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 colours marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth

DANGER ATTENTION Protective Earth(ground) High Voltage refer to Manual Conductor Terminal

Terminal

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terminal marked with the letter E or by the earth symbol

or col oured

Green or 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.

iii

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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, cable of 0.75mm

should be protected by a 3A or 5A fuse. Larger conductors would normally require 13A types, depending on the connection method used.

Any moulded mains connector that requires removal /replacement must be destroyed by removal of any fuse & fuse carrier and di sposed of immedia tely, as a plug with bared wires is hazardous if a engaged in live socket. Any rewiring must be carried out in accordance with the information detailed on this label.

USER MANUAL

1.PRODUCT INTRODUCTION

1-1. Description

The GRS-6052A and GRS-6032A set a standard in performance and economy, each equips with two professional scopes in one. They can be operated as a real time 50 or 30MHz analog oscilloscope and become a full function digital storage oscilloscope by pressing a button. Now, you have the power for digital capture and analysis of elusive single sho ts with a full 100MS/s sample rate. The i nstruments provide with a high speed A/D converter for each channel to enable the measurement, memory, and analysis of high-speed phenomena. A microprocessorbased operating system controls most of the functions of the instrument, including cursor readout and digitized panel setting. On-screen alphanumeric readout and cursor function for voltage, time and frequency measurement provide extraordinary operational convenience. Ten different user defined instrument settings can be saved and recalled without restriction.

The vertical deflection system has two input channels. Each channel has 14 basic deflection factors from 1mV to 20V per division. The horizontal deflection system provides sweep time from 100s to 0.2μs per division. The trigger system provides stable triggering over the full bandwidth of the vertical deflection system.

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GRS-6052A/6032A OSCILLOSCOPE

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1-2.Features

Additionally, the oscillo scope off ers seve ral othe r feat ures:

1) High intensity and internal graticule CRT The oscilloscope employs a high intensity 6-inch rectangular type cathoderay tube with red internal graticule. It displays clear readable traces even at high sweep speeds. Internal graticule lines eliminate parallax-viewing error between the trace and the graticule line.

2) Multiple Digital Storage Functions z Digitizing repetitive waveform up to full bandwidth 50/30MHz through

the use of equivalent sampling (500MS/s).

z 2k-word acquisition memory per channel up to 10 sets SAVE/RECALL

reference memories (with back-up) are provided.

z Pre-trigger function for observing waveforms before triggering. The

trigger point can be selected from 0~10 DIV (in 0.02DIV steps).

z Roll mode is ideal for observing flickering low-speed signals. The

TIME/DIV range up to 100s.

z The peak detect mode can detect glitch with pulse duration of 25ns or

more.

z The persistence mode makes for easy measurements of jitter, voltage

variation, and etc.

z The averaging function can be selected freely from 2 to 256. This

effectively reduces noi se fr om repe titive sign al s.

z The smoothing (dot-join) function provides linear connections between

the captured point, ensuring that digitized signals are displayed without gaps.

z In the magnification mode, the DOT or LINEAR interpolation can be

selected according to the waveform.

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z The built-in RS-232C interface enables remote control operation and

signal processing via a PC.

z The X-Y mode is same as the real ti me mode. The X (horizontal ) signal is

connected to the input of CH1, the Y (vertical) signal is applied to the input of CH2, and the storage waveform bandwidth up to 50MHz/30MHz.

3) ALT-MAG Function (both Real Time Mode and Storage Mode) The primary sweep waveform along with the magnified sweep waveform can

be displayed simultaneously using the ALT-MAG function. The magnification ratio can be selected from among three stages of ×5, ×10, ×20 for magnifying the displayed waveform in the center of the CRT.

4) Convenient VERT-MODE Triggering The sync signal source is decided automatically when vertical axis mode is switched. This means that you need not change the trigger source every time you switch the VERT-MODE.

5) TV triggering Exclusive TV sync separa tor circuit technology provides stable TV signal measurements on fields, frames and lines.

6) Hold Off (Real Time Mode only) The function allows the obtaining of stable synchronization for even complex waveforms that are difficult to synchronized by adjusting the trigger level alone.

7) CH1 Signal Output The CH1 signal output is obtained by branching the input signal in the middle of the signal line. As the connector outputs the input signal at a rate of 50mV/DIV, connecting a frequency counter makes it possible to measure the frequency of a very low signa l while ob serving it s wavef orm.

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8) Z-axis intensity modulation (Real Time Mode only) For applying a blanking signal from an external source. The trace displayed on the screen may be intensity-modulated where pulse signal or time-scale marks are required.

9) LED indicator and buzzer alarm The LED’s located in the front panel assist operation and indicated

additional information. Incorrect operation and the electrical end position of control knobs are indicated by a warning beep.

10) SMD manufacturing technology The instrument is built by using the most advanced SMD technology so as to reduce the number of internal wiring and shorten the foil route on the pc board. This will also greatly increase the high frequency performance and the reliability of the product.

11) Compact size (275W×130H×370D) mm and front panel layout groups for easyto-use.

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2.TECHNICAL SPECIFICATIONS

6-inch rectangular type with internal graticule; 0%, 10%, 90% and 100% markers. 8 x 10 DIV (1 DIV = 1 cm)

2kV (GRS-6032A)

Sensitivity: at least 5V Polarity : positive going input decrease intensity Usable frequency range: DC to 2MHz. Max. input voltage: 30V (DC +AC peak) at 1kHz or less. Input Impedance: approx. 33kΩ(GRS-6052A)

1mV~2mV/DIV ± 5%, 5mV~20V/DIV ± 3%, 14 calibrated steps in 1-2-5 sequence. Continuously variable to 1/2.5 approx. of panel indicate value.

GRS-6052A Bandwidth(-3dB) Rise Time

5mV~20V/DIV DC~50MHz Approx. 7ns

1mV~2mV/DIV DC~7MHz Approx. 50ns

GRS-6032A Bandwidth(-3dB) Rise Time

5mV~20V/DIV DC~30MHz Approx. 11.7ns

1mV~2mV/DIV DC~7MHz Approx. 50ns

Approx. 1MΩ±2% // approx. 25pF

GRS-6052A: 8DIV at 40MHz, 6DIV at 50MHZ GRS-6032A: 8DIV at 20MHz, 6DIV at 30MHz

CRT

VERTICAL SYSTEM

Type

Accelerating Potential Approx. 10kV (GRS-6052A),

INTEN and FOCUS Front panel control. Illumination Provided Trace Rotation Provided. Z-axis Input (REAL TIME mode only)

Sensitivity Accuracy

Vernier Vertical Sensitivity

Bandwidth(-3dB) and Rise Time

Maximum Input Voltage 400V (DC + AC peak) at 1kHz or less. Input Coupling AC, DC, GND Input Impedance

Vertical Modes CH1, CH2, DUAL(CHOP/ALT), ADD, CH2 INV. CHOP Frequency Approx. 250kHz. Dynamic Range (REAL TIME mode only)

47kΩ(GRS-6032A)

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GRS-6052A/6032A OSCILLOSCOPE

HORIZONTAL SYSTEM (REAL TIME mode)

TRIGGER SYSTEM

X-Y OPERATION (REAL TIME mode)

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Sweep Time

Accuracy ±3%, ±5% at ×5 and ×10 MAG, ±8% at ×20 MAG Sweep Magnification ×5, ×10, ×20 MAG

Maximum Sw ee p Ti me (at MAG)

ALT-MAG Function Available. Trigger Modes AUTO, NORM, TV Trigger Source VERT-MODE, CH1, CH2, LINE, EXT. Trigger Coupling AC, HFR, LFR, TV-V(-), TV-H(-). Trigger Slope “+” or “- ” polarity.

Trigger Sensitivity

External Trigger Input

Hold-off Time Variable (Real Time Mode only). Input X-axis : CH1, Y-axis : CH2 Sensitivity 1mV/DIV~20V/DIV. Bandwidth X-axis: DC~500kHz (-3 dB)

Phase Difference

0.2μs/DIV~0.5s/DIV, 20 steps selectable in 1-2-5 sequence, continuous variable control between steps at least 1:2.5.

GRS-6052A:20ns/DIV (10ns/DIV uncalibrated) GRS-6032A:50ns/DIV(10ns/DIV~40ns/DIV uncalibrated.

GRS-6052A

20Hz~5MHz 0.5 DIV 2.0 DIV 200mV

5MHz~40MHz 1.5 DIV 3.0 DIV 800mV

40MHz~50MHz 2.0 DIV 3.5 DIV 1V

GRS-6032A

20Hz~2MHz 0.5 DIV 2.0 DIV 200mV

2MHz~20MHz 1.5 DIV 3.0 DIV 800mV

20MHz~30MHz 2.0 DIV 3.5 DIV 1V

TV sync pulse more than 1 DIV (CH1, CH2, VERTMODE) or 200mV (EXT). Input impedance: Approx. 1MΩ//25pF(AC coupling) Max. input voltage: 400V (DC + AC peak) at 1kHz.

3°or less from DC to 50kHz

CH1,

CH2

CH1,

CH2

VERTMODE

EXT

DIGITAL STORAGE FUNCTIONS

OUTPUT SIGNAL

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Acquisition Digitizer Max. Sampling Rate

Acquisition Mode

Storage Bandwidth(3dB)

Dynamic Range Memory Length

Acquisition Memory Save REF Memory Display Memory

Sweep Time

Sweep Magnification Max. Sweep Time 10ns/DIV MAG Interpolation Dots, Linear ALT-MAG Function Available

Operation Mode Smoothing Function Dot Joint ON/OFF selectable Pre-trigger

X-Y Operation

Display Resolution

Waveform SAVE/RECALL

CH1 Signal Output

Calibrator Output

8 bit ADC × 2 500MS/s for equivalent time sampling.

100MS/s for normal sampling. Sample, Peak detect (>25ns), envelope, persistence, average (2~256). Single shot: DC to 25MHz. Repetitive : DC to 50MHz (GRS-6052A)

DC to 30MHz (GRS-6032A)

±5DIV.

2k words/CH×2, 1k words/CH (equivalent) 1k words/CH×10 with back-up memory(REF 0~9) 1k words/CH×4 waveform (max.) Equivalent: 0.2μs/DIV ~ 0.5μs/DIV Normal: 1μs/DIV ~ 0.1s/DIV Roll Mode: 0.2s/DIV ~ 100s/DIV ×5, ×10, ×20

Auto, Norm, Single, Single-roll, Roll, X-Y Average (2 ~ 256), Run/Stop

0 ~ 10DIV in 0.02DIV steps (at 5μs/DIV ~

0.1s/DIV) X-axis: CH1, Y-axis: CH2 Storage Bandwidth : DC~50MHz (GRS-6052A)

DC~20MHz (GRS-6032A) H : 100 points/DIV V : 25 points/DIV X-Y: 25 × 25 points/DIV

10 sets (REF0 ~ REF9) with back-up memory. Voltage : approx. 20mV/DIV (with 50Ω

terminal.) Bandwidth: 50Hz to at least 5MHz. Voltage : 0.5V±3%, Frequency: approx. 1kHz, square wave.

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CH1/CH2 sensitivity, sweep time, trigger condition, digital storage function.

10 sets Cursor Measurement Function: ΔV, ΔT, 1/ΔT.

Cursor Resolution: 1/25 DIV. Effective Cursor Range: Vertical:±3 DIV,

Horizontal: ±4 DIV Adjustable Remote control via a PC. AC100V, 120V, 230V ±10% selectable.

275(W)×130(H)×370(D) mm.

CURSOR READOUT & CONTROL INTERFACE

LINE POWER REQUIREMENT

MECHANICAL SPEC.

OPERATING ENVIRONMENT

STORAGE TEMPERATUR E & HUMIDITY

ACCESSORIES

Panel Setting Display Panel Setting Save &

Recall

Cursor Measurement

Text Readout Intensity RS232 Interface

Voltage Frequency 50Hz or 60Hz. Power Consumption Approx. 70VA, 60W(max). Dimensions Weights 8.5 kg Indoor use Altitude up to 2000 m Ambient temperature : To satisfy specifications : 10℃ to 35℃ ( 50° F to 95°F ) Maximum operating ranges: 0℃ to 40℃( 32°F to 104°F ) Relative humidity: 85% RH(max.) non condensing Installation Category : II

Pollution degree 2

-10° to 70℃, 70%RH(maximum)

Power cord….............……….. 1

Instruction manual…………… 1

Probe (×1/×10)…………..….... 2

Measurement category I is for measurements performed on circuits not directly connected to MAINS. Measurement category II is for measurements performed on circuits directly connected to the low voltage installation. Measurement category III is for measurements performed in the building installation. Measurement category IV is for measurements performed at the source of the low-voltage installation.

USER MANUAL

3.PRECAUTIONS BEFORE OPERATION

3-1.Unpacking the Oscilloscope

The product has been fully inspected and tested before shipping from the factory. Upon receiving the instrument, please unpack and inspect it to check if there is any damages caused during transportation. If any sign of damage is found, notify the bearer and/or the dealer immediately.

3-2.Checking the Line Voltage

The oscilloscope can be applied any kind of line voltage shown in the table below. Before connecting the power plug to an AC line outlet, make sure the voltage selector of the rear panel is set to the correct position corresponding to the line voltage. It might be damaged the instrument if connected to the wrong AC line voltage.

WARNING. To avoid electrical shock the power c ord protective grounding conductor must be connected to ground.

When line voltages are changed, replace the required fuses shown as below:

Line voltage Range Fuse

100V 90-110V 120V 108-132V

230V 207-250V T 0.4A 250V

WARNING. To avoid personal injury, disconnect the power

cord before removing the fuse holder.

T 1A 250V

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GRS-6052A/6032A OSCILLOSCOPE

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3-3.Environment

The normal ambient temperature range of this instrument is from 0° to 40°C (32° to 104°F). To operate the instrument over this specific temperature range may cause damage to the circuits. Do not use the instrument in a place where strong magnetic or electric field exists as it may disturb the measurement.

3-4.Equipment Installation, and Operation

Ensure there is proper ventilation for the vents in the oscilloscope case. If the equipment is used not according to the specification, the protection provided by the equipment may be impaired.

3-5.CRT Intensity

To prevent permanent damage to the CRT phosphor, do not make the CRT trace brighten excessively or leave the spot stay for an unreasonably long time.

3-6.Withstanding Voltages of Input Terminals

The withstanding voltages of the instrument input terminals and probe Input terminals are shown in the following table. Do not apply voltages higher than these limits.

Input terminal Maximum input voltage

CH1, CH2, inputs 400V (DC + AC peak)

EXT TRIG input 400V (DC + AC peak)

Probe inputs 600V (DC + AC peak)

Z AXIS input 30V (DC + AC peak)

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4. PANEL INTRODUCTION

After the instrument is switched on, all the important settings are displayed in the readout. The LED’s located on the front panel assist operation and indicate additional information. Incorrect operation and the electrical end positions of control knobs are indicat ed by a war ning be ep.

All of the pushbuttons, VOLTS/DIV control knobs, TIME/DIV control knobs are electronically selected, and their functions and settings can therefore be stored and remotely controlled as well. Some controls are only operated in the digital storage mode or have a different function. Explanation pertaining to them are indicated with the hint of “storage mode only”.

The front panel is subdivided into five sections:

z Display controls z Vertical controls z Horizontal controls z Trigger controls z Digital storage functions

CAUTION. To avoid damaging the instrument, do not apply input voltages of the frequency over 1 kHz to the instrument.

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4-1.Front Panel

Display controls

The display controls adjust the on-screen appearance of the waveform and provide a probe compensation signal source.

Front panel of GRS-6052A

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(1) POWER – Pushbutton

When switch on the oscilloscope to have all LEDs lighted and wait a few seconds, the normal operation mode is present. Then the last settings become activated and the LED indicates “ON” condition.

(2) TRACE ROTATION

The TRACE ROTATION is for aligning the horizontal trace in parallel with graticule lines. This potentiometer can be adjusted with a small screwdriver.

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(3) INTEN—Control knob (REAL TIME Mode only)

The control knob is used for adjusting the traces intensity in the real time mode. Turning the knob clockwise to increase the intensity while turning it counterclockwise to decrease the intensity.

(4) FOCUS

The control knob effects both the trace and the readout sharply.

(5) CAL

The terminal provides a reference signal of 0.5Vp-p at 1kHz for probe adjustment.

(6) Ground Socket—Banana Socket galvanically connected to safety earth

This socket can be used a reference potential connection for DC and low frequency signal measurement purpose.

(7) TEXT/ILLUM—Control knob with a double function.

The pushbutton is for selecting the text readout intensity function or scale illumination function, and indicates the letter “TEXT” or “ILLUM” in the readout. Press the pushbutton for the following sequences:

“TEXT” — “ILLUM” — “TEXT” The TEXT/ILLUM function is associated the VARIABLE (9) control knob. Turning the knob clockwise to increase the text intensity or scale illumination, while turning the knob counterclockwise to decrease it. Pressing the knob to switch the TEXT/ILLUM on or off. In the STORAGE mode, the brightness of the waveform on the screen can be controlled by the “TEXT”.

(8) CURSORS MEASUREMENT FUNCTION

There are two pushbutton and associated the VARIABLE (9) control knob.

When the pushbutton is pressed, the three measurement functions will be

selected in the sequence as follows:

△V—△T—1/△T—OFF

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△V: Two horizontal cursors appear. The voltage between the two cursors is

calculated according to the setting of VOLTS/DIV, and displayed with △V on the upper side of the CRT.

Single channel mode (CH1 or CH2):

The △V measuring result is automatically related to the deflection coefficient of the active channel. The readout displays “△V1…” or “△V2…”.

Dual channel mode:

The cursor lines must be set on the CH1 or CH2 signal. As the deflection coefficients may be different, it will be required to select between the deflection coefficient of CH1 and CH2.

ADD mode:

In ADD (addition) mode, normally two input signals are displayed as one signal (sum or difference). As the result can only be determined if both (calibrated) deflection coefficients are equal, the readout indicates “ △ V…” without any additional channel information. Different deflection coefficient settings or uncalibrated deflection coefficients are indicated in the readout as “△V=…DIV”.

X-Y mode:

In the X-Y mode, the instrument is automatically set to △ V measurement. The deflection coefficient selected for each channel may be different, thus as in DUAL mode the △V cursor measurement requires a channel selection. Under channel 1 (X signal) measuring condition the cursor line s are disp lay ed a s verti cal l ines and the re adout displays “△VX…”. Pressing the pushbutton, select channel 2 (Y signal) measuring, then the cursor lines are displayed as horizontal lines and the readout indicates “△VY…”.

△T: Two vertical cursors appear. The time between the two cursors is

calculated according to the setting of TIME/DIV, and displayed with

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GRS-6052A/6032A OSCILLOSCOPE

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△T on the upper side of the CRT.

1/△T: Two vertical cursors appear. The reciprocal of the time (frequency)

between the two cursors is calculated with 1/△T on the upper side of the CRT.

C1—C2—TRK Pushbutton

The cursor 1, cursor 2 and tracking can be selected by this button. Pressi ng the pushbutton to select the cursors in sequence as follows:

C1: Moves the cursor 1 on the CRT. C2: Moves the cursor 2 on the CRT.

TRK: Simultaneously moves the cursor 1 and cursor 2 with the interval

between the two cursors unchanged.

(9) VARIABLE—

Set the cursor position, TEXT/ILLUM, etc. by turning or pressing the VARIABLE knob. In the cursor mode, pressing the VARIABLE control knob to select the cursor position between FINE and COARSE adjustment. When select FINE adjustment by turning the VARIABLE, the cursor lines will move slowly. If select COARSE adjustment, he cursor will move fast. In TEXT/ILLUM mode, this control knob can be used to set the text intensity or illumination. Please refer to TEXT/ILL UM(7) for details.

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(10). SAVE—RECALL

The instrument contains 10 non-vol atile memorie s, whic h can be us ed by t he operator to save instrument setting and to recall them. It relates to all controls which are electronically selected.

Press or pushbutton to select the memory location. The readout then indicates the letter “M” followed by a cipher between 0 and 9. Each time t he pushbutton is briefly pressed the memory location cipher increases until the number 9 is reached. The pushbutton is similar but decreases the

memory location cipher until the number 0 is reached. Pressing and holding SAVE for approx. 3 seconds to write the instrument settings in the memory and indicate the associated readout information of “ ”.

To recall a front panel setup, select a memory location as described above.

Recall the settings by pressing and holding the RECALL pushbutton for

approx. 3 seconds, the readout then indicates the associated readout

information of “ ”.

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GRS-6052A/6032A OSCILLOSCOPE

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Vertical controls

The vertical controls select the displayed signals and control the amplitude characteristics.

(11) CH1—Pushbutton (12) CH2—Pushbutton

Pressing briefly the CH1 (CH2) button to set the channel 1 (channe l 2) of the instrument on, the deflection coefficient will be displayed in the readout indicating the current conditions.

(13) CH1 POSITION—Control knob

The vertical trace position of channel 1 can be set with the control knob. When X-Y operation in the Storage mode, C H1 POSITION control knob is use d for the X deflection.

(14) CH2 POSITION—Control knob

The vertical trace position of channel 2 can be set with the control knob. In X-Y operation, CH2 POSITION control knob is used for the Y deflection.

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(15) ALT/CHOP

In the REAL TIME mode, the pushbutton has two functions, which are required and available only when both channels are active.

ALT—Displays in the readout, indicates alternate channel switching. After

each time base sweeps the instrument internally, switches over from channel 1 and channel 2 and vice ve rsa. CHOP—Indicates chopper

The channel switching occurs constantly between channel 1 and channel 2

during each sweep.

In the STORAGE mode, ALT or CHOP mode is automatically selected by

TIME/DIV range. The ALT mode is established for the sweep range of

0.5ms/DIV or faster. The CHOP mode is established for the sweep range of 1ms/DIV or slower.

(16) ADD-INV—Pushbutton with double functions.

ADD– Displays the “+” symbol in the readout, indicates additional mode. Whether the algebraic sum (addition) or the difference (subtraction) of both input signals is displayed, depends on the phase relationship and the INV setting. As a result, both signals are displayed as one signal. For correct

measurements, the deflection coefficients for both channels must be equal. INV—Pressing and holding the pushbutton to set the channel 2 invert function on or off. The inve rt on co ndition i s indicate d by the “ ” symbol in the readout. The invert function causes the signal display of channel 2 to be inverted by 18 0

(17) CH1 VOLTS/DIV (18) CH2 VOLTS/DIV– Control knob for channel 1/channel 2 has double functions.

Turning the knob clockwise to increase the sensitivity in 1-2-5 sequence and

turning it in the opposite direction (CCW) to decrease. The available range is

from 1mV/DIV up to 20V/DIV. The knob is automatically switched inactive if

the related channel is switched off.

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The deflection coefficients and additional information regarding the active channels are displayed in the readout. VAR Pressing the VOLTS/DIV control knob to select the VOLTS/DIV function between attenuator and vernier (variable). The current setting is display ed by the “>” symbol in the readout. After switching on the VAR, turn the VOLTS/DIV control knob counterclockwise to reduce the signal height, and the deflection coefficient becomes uncalibrated.

(19) CH1 AC/DC

(20) CH2 AC/DC

Pressing the pushbutton briefly to switch over from AC (~ symbol) to DC (= symbol) input coupling. The setting is displayed in the readout with the deflection coefficien t.

(21) CH1 GND– P×10

(22) CH2 GND – P×10 –Pushbutton of two functions.

GND

Each time when the pushbutton is pressed briefly, the input of the vertical amplifier is grounded. It is displayed in the readout as an earth (ground) symbol “ ”.

P×10

Pressing and holding the pushbutton to select the indicated deflection coefficient of the channel displayed in the readout between 1:1 and 10:1. The probe factor of 10:1 is displayed in the readout with the probe symbol “P× 10” in front of channel indication. When proceed cursor voltage measurement, the probe factor will be automatically included. The sy mbol must not be activated unless a 10:1 attenuator probes are used.

USER MANUAL

(23) CH1-X—Input BNC socket

This BNC socket is the signal input for channel 1. In X-Y mode, signals at this input are used for the X deflection. The outer (ground) connection is galvanically connected to the instrument ground and consequently to the safety earth contact of the line/mains plug.

(24) CH2-Y—Input BNC socket

This BNC socket is the signal input for channel 2. In X-Y mode, signals at this input are used for the Y deflection. The outer (ground) connection is galvanically connected to the instrument ground and consequently to the safety earth contact of the line/mains plug.

Horizontal controls:

The horizontal controls select the time base operation mode and adjust the horizontal scale, position and magnification of the signal.

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GRS-6052A/6032A OSCILLOSCOPE

USER MANUAL

(25) H POSITION (Real Time mode only)

The control knob enables a horizontal position shift of the signals. In combination with MAG the function makes it possibl e to shift any part of t he signal on the screen. In X-Y mode, the control knob are used for the X deflection.

(26) TIME/DIV-VAR– Control knobs

Turning the knob clockwise to reduce the deflection coefficient in a 1-2-5 sequence and turning it in the opposite direction (CCW) to increase. The time coefficient(s) will be displayed in the rea dout. In the REAL TIME mode, the time deflection coefficients betwee n 0.5s/DIV and 0.2μs/DIV can be chosen in 1-2-5 s equence, if the MAG funct ion is not activated. In the STORAGE mode, the sampling method is changed automatically by the TIME/DIV range. Equivalent sampling (E QU): 0.2μs/DIV to 0.5μs/DI V.

Only a repetitive signal can be stored.

Normal sampling (SMPL): 1μs/DIV to 0.1s/DIV.

Single shot and repetitive signal can be stored.

Roll mode: 0.2s/DIV to 100s/DIV.

For observing flickering low-speed signals.

VAR (Real Time mode only)

Pressing the pushbutton to select the TIME/DIV control knob function between time base switch and vernier (variable). In the Real Time mode, after switching on the VAR, the time deflection coefficient is still calibrated until further adjustments are made. Turn the TIME/DIV control knob counter clockwise to increase the time deflection coefficient (reduce the deflection speed) and the deflection coefficient becomes uncalibrated. The current setting is displayed by the “>” symbol in the readout.

USER MANUAL

(27) X-Y

Pressing the pushbutton when using the instrument as an X-Y oscilloscope.

The time deflection coefficient is replaced by the “X-Y” symbol in the

readout.

In this mode, the X (horizontal) signal is connected to the input of CH1; the

Y (vertical) signal is applied to the input of CH2 and has a deflection range

from less than 1mV to 20V/DIV at a reduced band-width of 500kHz (Real

Time mode).

In the Storage mode, the X-Y operation is same as the REAL TIME mode.

The storage waveform bandwidth of both X and Y signal are up to

50MHz/30MHz.

(28) ×1/MAG

Pressing the pushbutton the select the sweep time between ×1 (normal) and

MAG (magnify). If the MAG function, the signal display will be expanded

and consequently only a part of the signal curve is visible. The interesting

part of the signal can be made visible with the aid of the H POSITION

control in the REAL TIME mode.

(29) MAG FUNCTION

×5-×10-×20 MAG

When MAG has been done, the displayed waveform will be expanded to the

right and left with the center of the CRT. The magnification ratio can be

selected from among three stage of ×5-×10-×20 MAG by pressing this

pushbutton.

ALT MAG

Pressing the pushbutton, the primary sweep waveform along with the

magnified sweep waveform. The magnified can be displayed

simultaneously using the ALT-MAG function. The magnified sweep

waveform appears 3 divisions bel ow the pri mary sweep wa veform.

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GRS-6052A/6032A OSCILLOSCOPE

USER MANUAL

Trigger controls

The trigger controls determine the swee p start timing for both signals.

(30) ATO/NML – Pushbutton and indicator LEDs.

Pressing the pushbutton to select auto or normal trigger mode. The actual

setting is indicated by a LED.

Each time when the pushbutton is pressed the trigger mode change s in the sequence: ATO—NML—ATO

ATO (Auto)

Select the automatical mode, the sweep free-runs will display a baseline trace when there is no trigger signal. The setting of triggering level changed only when the TRIGGER LEVEL control is adjusted to a new level setting.

NML (Normal)

Select the normal mode, the input signal will trigger the sweep when the TRIGGER LEVEL control is set within the peak-to-peak limits of an adequate trigger signal. When the sweep is not triggered, no baseline trace will be displayed. Use this mode when effecting synchronization to a very low frequency signal (25Hz or less).

USER MANUAL

(31) SOURCE—Pushbutton

Pressing the pushbutton to select the trigger signal source. The actual setting is indicated by the readout (“SOURCE”, slope, coupling). Each time when the pushbutton is pressed, the trigger source change in the sequence: VERT—CH1—CH2—LINE—EXT—VERT

VERT (Vertical Mode)

For observing two waveforms, the sync signal changes alternately corresponding to the signals on CH1 and CH2 to trigger the signal.

CH1

The signal applied to the channel 1 input connector is the source of the trigger signal.

CH2

The signal applied to the channel 2 input connector is the source of the trigger signal.

LINE

The triggering signal is obtained from a sample of the AC power source waveform. The trigger source is useful when the displayed waveform frequency is time related to the AC power source freque ncy.

EXT

The external signal applied through the EXT input connector is used for the external triggering source signal.

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GRS-6052A/6032A OSCILLOSCOPE

USER MANUAL

(32) TV—Pushbutton for video sync signal selection

Separate the video sync signal from the composite waveform and direct it to the triggering circuit. The horizontal or vertical sync signals are selected by TV pushbutton. The current setting is displayed in the readout under item (source, video polarity, “TVV or TVH”). Each time when the pushbutton is pressed, the video sync signal is d isplayed in the sequences as follows:

TV-V—TV-H—OFF—TV-V

TV-V

Start the main trace at the beginning of a video signal field. The polarity must match the composite sync polarity (i. e, “ ” fo r negative sync) to obtain TV field triggering on the vertical sync pulse.

TV-H

Start the main trace at the beginning of a video signal line. The polarity must match the composite sync polarity to obtain TV line triggering on the horizontal sync pulse.

(33) SLOPE—Pushbutton for the triggering slope.

Briefly pressing the pushbutton to select the slope of the signal which is used for triggering the time base generator. Each time when the pushbutton is briefly pressed, the slope direction will switch from falling edge to rising edge, and vice versa. The current setting is displayed in the readout under item “source, SLOPE, coupling”. If in the TV trigger mode, it is synchronized only when the sync signal is negative. A “ ” symbol is displayed in the readout.

USER MANUAL

(34) COUPLING—

Pressing the pushbutton to select the trigger coupling. The actual setting is indicated by the readout (source, slope “COUPLING”). Each time when the COUPLING pushbutton is pressed the trigger coupling changes in the sequence:

AC—HFR—LFR—AC

Attenuates trigger signal frequency components below 20Hz and blocks the

DC component of the signal.

AC coupling is useful for triggering on AC waveforms that have a large DC

offset.

HFR (High Frequency Reject)

Attenuates high-frequency triggering signal components above 50kHz. HFR

coupling is useful for providing a stable display of low-frequency

components of complex waveforms and eliminates high-frequency

interference from the trigger signal.

LFR (Low Frequency Reject)

Attenuates low-frequency triggering signal components below 30kHz and

blocks the DC component of the trigger signal. LFR coupling is useful for producing stable triggering on the highfrequency components of complex waveforms and rejecting low-freq uency interference or power supply hum from the trigger signal.

(35) TRIGGER LEVEL—Control knob with TRG LED

Turning the control knob causes a different trigger input setting (voltage), and set to a suitable position for the starting of triggered sweep of the waveform. When rotate clockwise the control knob, the trigger point moves toward the positive peak of the trigger signal and rotate it counterclockwise to move the trigger point toward the negative peak of the trigger signal.

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