GW Instek GRS-6052A User manual

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Declaration of Conformity
We
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 Electrostatic Discharge IEC 61000-4-2: 1995
Current Harmonic
IEC 61000-3-2: 1995 Radiated Immunity IEC 61000-4-3: 1995
Voltage Fluctuation
IEC 61000-3-3: 1994 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
◎Safety
Low Voltage Equipment Directive 73/23/EEC & amended by 93/68/EEC
Safety Requirements
IEC/EN 61010-1:2001
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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 Operation………………....
3-5.CRT Intensity……………………………………………
3-6.Withstanding Voltage of Input Terminals……………...
9
9
9
10
10
10
10
4. PANEL INTRODUCTION……………………..…………...
4-1.Front Panel……………………………………………….
4-2.Rear Panel……………………………………….……….
11
13
32
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………………………
34
34
37
38
40
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51
60
62
6. MAINTENANCE……………………………………………
6-1.Fuse Replacement………………………………………..
6-2.Line Voltage Conversion……………………………..….
6-3.Cleaning………………………………………………….
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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 in this manual or on the product:
DANGER ATTENTION Protective Earth(ground)
High Voltage refer to Manual Conductor Terminal
Terminal
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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
terminal marked with the letter E or by the earth symbol or coloured
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.
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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 0.75mm2should 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 disposed of immediately,
as a plug with bared wires is hazardous if a engaged in live socket. Any re-
wiring must be carried out in accordance with the information detailed on
this label.
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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 shots with a full 100MS/s sample rate. The instruments
provide with a high speed A/D converter for each channel to enable the
measurement, memory, and analysis of high-speed phenomena. A microprocessor-
based 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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1-2.Features
Additionally, the oscilloscope offers several other features:
1) High intensity and internal graticule CRT
The oscilloscope employs a high intensity 6-inch rectangular type cathode-
ray 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
zDigitizing repetitive waveform up to full bandwidth 50/30MHz through
the use of equivalent sampling (500MS/s).
z2k-word acquisition memory per channel up to 10 sets SAVE/RECALL
reference memories (with back-up) are provided.
zPre-trigger function for observing waveforms before triggering. The
trigger point can be selected from 0~10 DIV (in 0.02DIV steps).
zRoll mode is ideal for observing flickering low-speed signals. The
TIME/DIV range up to 100s.
zThe peak detect mode can detect glitch with pulse duration of 25ns or
more.
zThe persistence mode makes for easy measurements of jitter, voltage
variation, and etc.
zThe averaging function can be selected freely from 2 to 256. This
effectively reduces noise from repetitive signals.
zThe smoothing (dot-join) function provides linear connections between
the captured point, ensuring that digitized signals are displayed without
gaps.
zIn the magnification mode, the DOT or LINEAR interpolation can be
selected according to the waveform.
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zThe built-in RS-232C interface enables remote control operation and
signal processing via a PC.
zThe X-Y mode is same as the real time 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 separator 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 signal while observing its waveform.
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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 easy-
to-use.
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2.TECHNICAL SPECIFICATIONS
Type 6-inch rectangular type with internal graticule; 0%, 10%, 90% and 100% markers.
8 x10 DIV (1 DIV = 1 cm)
Accelerating Potential Approx. 10kV (GRS-6052A),
2kV (GRS-6032A)
INTEN and FOCUS Front panel control.
Illumination Provided
Trace Rotation Provided.
CRT Z-axis Input
(REAL TIME mode
only)
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)
47kΩ(GRS-6032A)
Sensitivity Accuracy 1mV~2mV/DIV ±5%, 5mV~20V/DIV ±3%, 14
calibrated steps in 1-2-5 sequence.
Vernier Vertical
Sensitivity 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
Bandwidth(-3dB) and
Rise Time
1mV~2mV/DIV DC~7MHz Approx. 50ns
Maximum Input Voltage 400V (DC + AC peak) at 1kHz or less.
Input Coupling AC, DC, GND
Input Impedance Approx. 1MΩ±2% // approx. 25pF
Vertical Modes CH1, CH2, DUAL(CHOP/ALT), ADD, CH2 INV.
CHOP Frequency Approx. 250kHz.
VERTICAL
SYSTEM
Dynamic Range
(REAL TIME mode
only)
GRS-6052A: 8DIV at 40MHz, 6DIV at 50MHZ
GRS-6032A: 8DIV at 20MHz, 6DIV at 30MHz
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Sweep Time 0.2μs/DIV~0.5s/DIV, 20 steps selectable in 1-2-5
sequence, continuous variable control between steps
at least 1:2.5.
Accuracy ±3%, ±5% at ×5 and ×10 MAG, ±8% at ×20 MAG
Sweep Magnification ×5, ×10, ×20 MAG
Maximum Sweep Time
(at MAG)
GRS-6052A:20ns/DIV (10ns/DIV uncalibrated)
GRS-6032A:50ns/DIV(10ns/DIV~40ns/DIV
uncalibrated.
HORIZONTAL
SYSTEM
(REAL TIME
mode) 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.
GRS-6052A CH1,
CH2 VERT- MODE EXT
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 CH1,
CH2 VERT- MODE EXT
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
Trigger Sensitivity
TV sync pulse more than 1 DIV (CH1, CH2, VERT-
MODE) or 200mV (EXT).
External Trigger Input Input impedance: Approx. 1MΩ//25pF(AC
coupling)
Max. input voltage: 400V (DC + AC peak) at 1kHz.
TRIGGER
SYSTEM
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 (-3dB)
X-Y
OPERATION
(REAL TIME
mode) Phase Difference 3°or less from DC to 50kHz
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Acquisition Digitizer 8 bit ADC ×2
Max. Sampling Rate 500MS/s for equivalent time sampling.
100MS/s for normal sampling.
Acquisition Mode Sample, Peak detect (>25ns), envelope, persistence,
average (2~256).
Storage Bandwidth(-
3dB)
Single shot: DC to 25MHz.
Repetitive : DC to 50MHz (GRS-6052A)
DC to 30MHz (GRS-6032A)
Dynamic Range ±5DIV.
Memory Length
Acquisition Memory
Save REF Memory
Display Memory
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.)
Sweep Time Equivalent: 0.2μs/DIV ~ 0.5μs/DIV
Normal: 1μs/DIV ~ 0.1s/DIV
Roll Mode: 0.2s/DIV ~ 100s/DIV
Sweep Magnification ×5, ×10, ×20
Max. Sweep Time 10ns/DIV
MAG Interpolation Dots, Linear
ALT-MAG Function Available
Operation Mode Auto, Norm, Single, Single-roll, Roll, X-Y
Average (2 ~ 256), Run/Stop
Smoothing Function Dot Joint ON/OFF selectable
Pre-trigger 0 ~ 10DIV in 0.02DIV steps (at 5μs/DIV ~
0.1s/DIV)
X-Y Operation X-axis: CH1, Y-axis: CH2 Storage Bandwidth : DC~50MHz (GRS-6052A)
DC~20MHz (GRS-6032A)
Display Resolution H : 100 points/DIV
V : 25 points/DIV
X-Y: 25 ×25 points/DIV
DIGITAL
STORAGE
FUNCTIONS
Waveform
SAVE/RECALL 10 sets (REF0 ~ REF9) with back-up memory.
CH1 Signal Output Voltage : approx. 20mV/DIV (with 50Ω
terminal.)
Bandwidth: 50Hz to at least 5MHz.
OUTPUT
SIGNAL Calibrator Output Voltage : 0.5V±3%,
Frequency: approx. 1kHz, square wave.
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Panel Setting Display CH1/CH2 sensitivity, sweep time, trigger
condition, digital storage function.
Panel Setting Save &
Recall 10 sets
Cursor Measurement
Cursor Measurement Function: ΔV, ΔT, 1/ΔT.
Cursor Resolution: 1/25 DIV.
Effective Cursor Range: Vertical:±3 DIV,
Horizontal: ±4 DIV
Text Readout Intensity Adjustable
CURSOR
READOUT &
CONTROL
INTERFACE
RS232 Interface Remote control via a PC.
Voltage AC100V, 120V, 230V ±10% selectable.
Frequency 50Hz or 60Hz.
LINE POWER
REQUIREMENT Power Consumption Approx. 70VA, 60W(max).
Dimensions 275(W)×130(H)×370(D) mm.
MECHANICAL
SPEC. Weights 8.5 kg
OPERATING
ENVIRONMENT
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
STORAGE
TEMPERATUR
E & HUMIDITY -10°to 70℃, 70%RH(maximum)
ACCESSORIES
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.
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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 cord 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 T 1A 250V
230V 207-250V T 0.4A 250V
WARNING. To avoid personal injury, disconnect the power
cord before removing the fuse holder.
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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)
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. 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 indicated by a warning beep.
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:
zDisplay controls
zVertical controls
zHorizontal controls
zTrigger controls
zDigital storage functions
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Front panel of GRS-6052A
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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.
(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 lines are displayed as vertical lines and the readout
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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△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. Pressing
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/ILLUM(7) for details.
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(10). SAVE—RECALL
The instrument contains 10 non-volatile memories, which can be used by the
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 the
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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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 (channel 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, CH1 POSITION control knob is used 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 versa.
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 invert on condition is indicated by the “ ” symbol
in the readout. The invert function causes the signal display of channel 2 to
be inverted by 180o.
(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 displayed 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 coefficient.
(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 symbol
must not be activated unless a 10:1 attenuator probes are used.
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(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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(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 possible to shift any part of the
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 readout.
In the REAL TIME mode, the time deflection coefficients between 0.5s/DIV
and 0.2μs/DIV can be chosen in 1-2-5 sequence, if the MAG function is not
activated.
In the STORAGE mode, the sampling method is changed automatically by
the TIME/DIV range.
Equivalent sampling (EQU): 0.2μs/DIV to 0.5μs/DIV.
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.
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(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 below the primary sweep waveform.
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Trigger controls
The trigger controls determine the sweep 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 changes 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).
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(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 frequency.
EXT
The external signal applied through the EXT input connector is used for the
external triggering source signal.
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(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 displayed 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, “ ” for 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.
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(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
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 high-
frequency components of complex waveforms and rejecting low-frequency
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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When the setting (voltage) value is out of the changing portion of the
observation waveform, the synchronization sweep stops.
TRG LED
The TRG LED is lit if the triggering conditions are met. Whether the LED
flashes or is lit constantly depends on the frequency of the trigger signal.
(36) HOLD-OFF—Control knob (REAL TIME mode only)
Used when the signal waveform is complex and stable triggering cannot be
attained with the TRIGGER LEVEL(35) knob alone, rotate this control knob
to adjust hold-off time(trigger inhibit period beyond sweep duration). When
control is rotated fully clockwise, the hold-off period is at MINimum
(normal). The hold-off period increases progressively with counterclockwise
rotation.
(37) TRIG EXT—This BNC socket is the external trigger signal input.
Pressing the TRIG. SOURCE (31) pushbutton until the information of “EXT,
slope, coupling” is shown up in the readout switches the input on.
The outer (ground) connection is galvanically connected to the instrument
ground and consequently to the safety earth contact of the line/mains plug.
The maximum input voltages of the input terminal are shown in the section
of 3-6. “Withstanding voltage of Input terminals”. Do not apply voltage
higher than the limit.
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Storage Control
The Storage Control select the digital storage function.
(38) STORAGE/REAL TIME mode
Switch the REAL TIME mode to (digital) STORAGE mode by pressing the
button. In this case, all the switches from (39) to (42) are valid.
When the switch is pressed again in the STORAGE mode, the REAL TIME
mode is established again. In the STORAGE mode, the RUN LED blinks in
synchronism with sampling.
(39) MENU
Press the pushbutton to change the acquisition mode, the smoothing ON or
OFF, the interpolation method and the selection of SAVE/RECALL waveform
memory. Each pressing changes the setting mode and the present setting mode
is displayed at the top right on the CRT. The settings in each mode are
changed by the VARIABLE (9) control knob. Please refer to section 5-7 for
details.
(40) RUN/STOP—Pushbutton and indicator LED
Pressing this pushbutton to stop sampling, resulting in the hold state, and the
RUN LED is off. The current setting is indicated by the readout (“STOP”).
Further pressing the pushbutton to release hold state and start sampling states.
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(41) SINGLE
Pressing the pushbutton to set the SINGLE mode and the “SINGLE” message
will be indicated in the readout.
In this operation mode, a single signal acquisition process or sweep can be
started with a trigger. Providing the trigger circuit has been previously
activated with reset function, SINGLE is automatically switched to normal
triggering (NML LED lights up). Otherwise the trigger automatic would start
the signal acquisition processes without an input (trigger) signal.
Pressing the RUN/STOP pushbutton (reset function) again to resume a new
single event capture which then overwrites the previously recorded display.
(42) UTILITY
The instrument software contains several utility setting. Each time when the
UTILITY pushbutton is pressed, the readout displays the following message in
the sequence at the top right of the CRT:
RS232 baud rate
BEEP ON/OFF
FACTORY DEFAULT loading
RS232 Baud Rate
The setting of baud rate and data format on the instrument must be the same
as the one on the computer. The baud rate of the RS-232 interface can be
selected by turning the VARIABLE control knob according to the list as
follows:
300—900—1200—2400—4800—9600
Press the VARIABLE control knob to set RS-232 baud rate, the screen will
display “RM” in the upper left corner to show GRS-6052AA/6032 in the
Remote Control mode.
Note: When the baud rate is set, the front panel control will be locked.
Press UTILITY can unlock the front panel control and disable remote
control.
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BEEP ON/OFF
When the “BEEP” is displayed, turning the VARIABLE control knob to set
the beep on or off. In the “OFF” condition, the acoustic signals actuated by
the control limits are switched off.
FACTORY DEFAULT loading
When the “FACTORY DEFAULT” is displayed, pressing the VARIABLE
control knob to overwrite all panel setting memories (MEM0~MEM9), please
refer to the setting as follows:
REAL TIME mode : ON
VERTICAL : CH1: ON, CH2: ON
VOLTS/DIV: 0.5V
COUPLING: AC
HORIZONTAL : TIME/DIV: 100μs
TRIGGER : MODE: ATO
SOURCE: CH1
COUPLING: AC
SLOPE:
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4-2. Rear Panel
The rear panel provides input power and additional signal connections.
(43)Line voltage selector and input fuse holder—Select power source and
contain the primary power fuse
The fuse rating is shown in the section of 3-2 Checking the line voltage.
(44)AC power input connector
Connect the AC power cord to the power supply of instrument, the power
cord protective-ground connection is connected to the exposed metal part of
the instrument. The power cord must be connected to a proper grounded
source for electrical-shock protection.
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(45)CH1 Output—BNC socket
This output may be used to connect to a frequency counter or other
instrument.
(46)Z-Axis Input—BNC socket
Connect external signals to the Z-axis amplifier for intensity modulating the
CRT display. This terminal is DC-coupled. The intensity is lowered by a
positive signal, while it is increased by a negative signal.
(47)RS-232—Connector
Connect to other equipment with the RS-232 interface.
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5. OPERATION METHOD
This section contains basic operation information and techniques that should be
considered before proceeding any measurement. As for the location and function
of instrument controls, connectors, and indicators, refer to the “Instruction of
Front Panel and Rear Panel” of this manual.
5-1.Readout Display
The CRT readout display indicates how to set up the instrument controls. No
physical marking shown on the rotating switches indicates the control setting. A
key to the location and type of readout information display are illustrated in
figure 5-1(a) and 5-1(b):
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Figure 5-1(a) REAL TIME mode Readout Layout
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