Good Will Instrument instek GOS-6200 User manual

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200MHz Readout Oscilloscope
GOS-6200
User Manual
Good Will Instrument Co., Ltd.
G W Part No. 820s-62HOOMB
Printed
in Taiwan September 200
1
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All Rights Reserved
This manual contains proprietary information, which is protected by
copyrights. All rights are reserved. No part of this manual may be
photocopied, reproduced or translated to another language without
prior written consent of Good Will company.
The information in this manual was correct at the time of printing.
However, Good Will continues to improve products and reserves the
rights to change specification, equipment, and maintenance
procedures at any time without notice.
Good Will Instrument Co., Ltd
No.
95- 1 1, Pao-Chung Road, Hsin-Tien City, Taipei Hsien, Taiwan
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GOS-6200 OSCILLOSCOPE
USER
MANUAL
CONTENTS PAGE
1
. PRODUCTINTRODUCTION ................................................. 1
1.1.Description
....................................................... 1
1.2.Feature
............................................................. 2
2
. TECHNICALSPECIFICATIONS .......................... 4
3
. PRECAUTIONS BEFORE OPERATION ...................... 8
3.1.Unpacking theinstrument......................................
8
3.2.Checking theLine Voltage ..................................... 8
3.3.Environment
..................................................... 9
......................
3-IEquipment Installation and Operation 9
....................................................
3.5.CRT Intensity 9
.................. 3.6.Withstanding Voltageof Input Terminals
9
4 .
PANELLNTRODUCTION ......................................... 10
4.l.Front Panel
....................................................... 12
4.2.Rear Panel
........................................................34
5. OPERATION METHOD...........................................36
5.l.Readout Display
.................................................. 36
5.2.Connecting Input Signals
...................................... 38
5.3. Adjustment and Checks
.................................. 39
5.4. Function Check
..................................................41
5.5.Basic Operation
................................................... 43
5d.Measurement Application ..................................... 52
...................................................
6. MAINTENANCE 56
6.l.Fuse Replacement
............................................... 56
......................................................
6.2.Line Voltage 56
6.3.Cleaning ..........................................................57
7
. BLOCK DIAGRAM
................................................ 58
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GOS-6200 OSCILLOSCOPE
USER
MANUAL
SAFETY TERMS AND SYMBOLS
n
Theseterms may appear inthis manualor onthe product:
WARNING. Warning statements identify condition or
practicesthat could resultininjuryor lossof life.
CAUTION. Caution statements identify conditions or
practicesthat could result indamage tothis productor
other property.
The followingsymbolsmay appear inthis manualor onthe product:
DANGER AlTENTlON Protective Earth(ground)
HighVoltage referto ~anual
Conductor Terminal
Terminal
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GOS-6200 OSCILLOSCOPE
USER
MANUAL
-
FOR UNITED KINGDOM ONLY
NOTE: This leadlappliance must only be wired by competent persons
WARNING:
THIS APPLIANCE MUST BE EARTHED
IMPORTANT: Thewires in this lead are coloured in accordance with
the followingcode:
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
@
orcoloured Green orGreen & Yellow.
The wire which is coloured Blue must be connected to the terminal
which is marked with the letter
N or coloured BlueorBlack.
The wire which is coloured Brown must be connected to the terminal
marked with the letter
L orP or coloured Brown orRed.
If in doubt, consult the instructions provided with the equipment or
contact the supplier.
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GOS-6200 OSCILLOSCOPE
USER MANUAL
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
0.75mmzshould 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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GOS-6200OSClLLOSCOPE
USER
MANUAL
- - -
EC Declaration of Conformity
We
GOOD WILL INSTRUMENT CO., LTD.
(1) No. 95-1 1,Pao-Chung Rd., Hsin-Tien City, Taipei Hsien, Taiwan
(2)Plot 522, Lorong Perusaham
Baru 3, Prai Industrial Estate, 13600Prai, Penang, Malaysia
declaresthat the below mentioned product
GOS-6200
is 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
(891366/EEC, 92/31/EEC, 93168EEC) and Low Voltage Equipment
Directive
(73123lEEC).
For the evaluation regarding the Electromagnetic Compatibility and Low Voltage
;
Zonducted and Radiated Emissions I Electrostatic Discharge
EN 55011 class B: 1998
EN 61000-4-2. 1995-
Current Harmonic Radiated Immunity
EN 61000-3-2. 1995 EN 61000-4-3 : 1996
Voltage Fluctuation Electrical Fast Transients
EN 61000-3-3: 1995
EN 61000-4-4: 1995
Surge Immunity
EN
61000-4-5: 1995
----------------
Conducted Susceptib~lity
EN 61000-4-6: 1996
----------------
Power Frequency Magnetic field
EN 61000-4-8: 1993
----------------
Voltage Dips/ Interrupts
EN 61000-4-11 : 1994
M- *'u8 %Rage &uipmentD&kfi+e ?5R9/EE3' &amended by 93168AZE1~
Safety Requirements
EN
61010-1: 1993+A2: 1995
IEC 610 10- 1 : 1 99O+A I : l992+A2: 1995
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GOS-6200 OSCILLOSCOPE
USER MANUAL
1.PRODUCT INTRODUCTION
1-1. Description
The GOS-6200 is a 200MHz, two-channel, dual-sweep, portable oscilloscope
for general purpose use.
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, frequency and phase measurement provide extraordinary
operational convenience. It also has the function of TV Line select for
triggering setting, auto measurement for frequency, period, pulse width and
duty cycle and auto setting function. Ten different user defined instrument
settings can be saved and recalled without restriction.
The vertical deflection system has two input channels. Each channel has
11
basic deflection factors from 2mV to 5V per division. The horizontal
deflection system provides single, dual or delayed sweeps from 0.5s to 20ns
per division (delayed sweep, 50ms to 20ns per division). The trigger system
provides stable triggering over the full bandwidth of the vertical deflection
system.
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GOS-6200 OSCILLOSCOPE
USER
MANUAL
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 retangular 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) Temperature compensation
The oscilloscope uses a temperature compensation circuit to reduce the
drift of base line and
DC balance.
3) 20MHz bandwidth limit
When it is hard to observe or trigger a signal because a high-frequency
component is superimposed on the signal, use the
20MHz BWL
function to reduce the bandwidth of the vertical deflection system and
trigger system to
20MHz.
4) Auto-setting
At a press of the AUTOSET button, an optimum time base range is
automatically set to a corresponding change in input signal period.
A
signal period from 1.6 to 4 cycles, signal amplitude from 1-7 div
approx. is displayed.
5) TV triggering
Exclusive TV sync separator circuit technology provides stable TV
signal measurements on fields, frames and lines.
6) Z-axis intensity modulation
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.
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GOS-6200 OSCILLOSCOPE
USER MANUAL
7) Trigger signal output
The signai selected by the TRIGGER
SOURCE is available. This
output may be used to connect to a frequency counter or other
instrument.
8) Panel setups lock
To avoid unintentional touch of the setting, the feature is extremely
useful for long term and repetitive measurements that used to be
performed under the same test condition of the oscilloscope setting.
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.
1O)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.
1 1)Auto Measurement
A built-in
6 digits universal counter is accurate within the range of
10.0
1 % and can measure frequency between 50Hz and 200MHz.
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GOS-6200 OSCILLOSCOPE
USER MANUAL
2.TECHNICAL SPECIFICATIONS
DEFLECTION
SYSTEM
'RIGGER
YSTEM
Trigger Sensitivity
TV-Line
election
Standard Field 1 Field 2
TV Sync NTSC(525H) 1H-263H 1 H-262H
PAL (625H) ]H-3 13H
SECAM(625H) 1H-3 12H
vlax. External Input Voltage 400V (DC
+ AC peak) at IkHz
3xternal Input Impedance IMR*
5% // 25pF approx.
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GOS-6200 OSCILLOSCOPE
USER MANUAL
HORIZONTAL
DEFLECTION
SYSTEM
Y-Y
Horizontal Modes
A (main) Sweep Time
B (delay) SweepTime
Accuracy
SweepMagnification
Hold Off time
Delay Time
Delay Jitter
Alternate Separation
Sensitivity Accuracy
MAIN(A), ALT, DELAY(B)
20ns-O.SsDIV, continuously variable
(UNCAL)
2011s-5OmsDIV
&3%(&5%at
x 10 MAG)
x 10 (maximum sweep time 2nSlDIV)
Variable
1us-5s
1120000 or less
Variable
X-axis, Y-axis selectable
X-axis: CHI, CH2+ 2mV-5VIDIV
* 3%
EXT + O.1VlDIV * 3%
EXTI10
+ 1VIDIV * 5%
DPERAT1ON
CURSOR
READOUT
FUNCTION
AUTO
MEASUREMENT
FUNCTION
X-axis Bandwidth
Phase Error
Cursor Measurement Function
Cursor Resolution
Effective Cursor Range
Panel setting
Parameter Function
Display Digits
Frequency Range
Accuracy
Measuring Sensitivity
Y-axis: CHl,CH2+ 2mV-5VlDIV
.t 3%
DC-5OOkHz (-3dB)
3" or less at DC-5OkHz
A V, A V%,
A VdB,A T,11AT,AT%,A 8.
11100DIV
Vertical:
* 3 DIV; horizontal: * 4 DIV
Vertical: VIDIV (CHI, CH2),UNCAL, ADD.
INV, P10, ACIDCIGND.
Horizontal: SIDIV (MTB, DTB), UNCAL
x IOMAG, Delay time, Hold-off.
Trigger: Source, Coupling, Slope, Level
,
TV-VITV-WTV-L.
Others: X-Y, LOCK, SAVEIRECALL
MEM 0-9.
FREQ, PERIOD,
t WIDTH, +DUTY,
(+ or - polarity selected by trigger slop.)
Max. 6-digits, decimal.
50Hz-200MHz.
1kHz-200MHz: k0.01%
5OHz-lkHz
: 0.05%
>2div(measuring source selected from CH1
and CH2 as synchronous signal source.)
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GOS-6200 OSCILLOSCOPE
USER
MANUAl
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GOS-6200 OSCILLOSCOPE
USER MANUAL
STORAGE
TEMPERATURE
& HIJMIDITY -10" to 70°C,70%RH(maximum)
--- ---
MECHANICAL
SPECIFICATION Dimensions 1310
W x 150 H x 485 D (mm)
Weight l~pprox.9.5kgs (20.9 Ibs)
ACCESSORIES
......................... Power cord.. 1
.............
Instruction manual.. 1
................. Probe (X l/X 10) 2
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GOS-6200OSCILLOSCOPE
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.
WARNZNG. 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:
WARNZNG. To avoid personal injury, disconnect the power
cord before removing the fuse holder.
Line voltage
1OOV
120V
Range
90-110V
108-132V
Fuse
1A250V
Line voltage
230V
Range
207-250V
Fuse
T 0.4A250V
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GOS-6200 OSCILLOSCOPE
USER MANUAL
3-3.Environment
The normal ambient temperature range of this instrument is from 0" to
40°C (32O to 104OF). To operate the instrument. over this specific
temperature range may cause damageto 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. DOnot apply voltages
higher than these limits.
400V (DC
+ AC peak)
CAUTION. To avoid damagingthe instrument, do not apply input
voltages of the frequency over
1 kHz to the instrument.
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GOS-6200OSCILLOSCOPE
USER
MANUAL
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.
Except the Power pushbutton (POWER), the Focus control (FOCUS), the
Scale Iilurniriation control (ILLUM) and the Trace Rotation contrbl, all
other controls are electronically selected, and their functions and settings
can therefore be stored.
The front panel is subdivided into six sections:
Display controls
Vertical controls
Horizontal controls
Trigger controls
Measurement and SAVEIRECALL controls
Input connectors
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GOS-6200 OSCILLOSCOPE
USER
MANUAL
Front panel of GOS-6200
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GOS-6200OSCILLOSCOPE
USER
MANUAL
4-1.Front Panel
Display controls
The display controls adjust the on-screen appearance of the waveform and
provide a probe compensation signal source.
(l).POWER
- Pushbutton and symbols for ON(1) and OFF(0).
When switch on the oscilloscope to have all LEDs lighted and the
software version will be displayed on the screen. After the Internal test
is completed successfully, the normal operation mode is present. Then
the last settings become activated and the LED indicates the ON
condition.
(2).INTEN-TRACEIREADOUT
& READOUT ONIOFF- Control
knob with associated pushbutton and readout display.
The control knob is used for adjusting the traces and readout
intensity. Turning the knob clockwise to increase the intensity and
turning it counterclockwise to decrease the intensity.
The TRACEIREADOUT pushbutton is for selecting the intensity
function and indicates the letter "TRACE INTEN" or "READOUT
INTEN" in the readout. Press the pushbutton briefly for the
following sequences:
"TRACE INTEN"
- "READOUT INTEN" - "TRACE INTEN"
READOUT ONlOFF
Pressing and holding the TRACEIREADOUT pushbutton switches
the readout on or off.
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