GW Instek GOS-620FG User manual

[phone] | [email protected] | artisantg.com
-~
ARTISAN
®
~I
TECHNOLOGY
GROUP
Your definitive source
for
quality
pre-owned
equipment.
Artisan Technology
Group
Full-service,
independent
repair
center
with
experienced
engineers
and
technicians
on staff.
We
buy
your
excess,
underutilized,
and
idle
equipment
along
with
credit
for
buybacks
and
trade-ins
.
Custom
engineering
so
your
equipment
works
exactly as
you
specify.
•
Critical
and
expedited
services
•
Leasing
/
Rentals/
Demos
• In
stock/
Ready-to-ship
•
!TAR-certified
secure
asset
solutions
Expert
team
ITrust
guarantee
I
100%
satisfaction
All
tr
ademarks,
br
a
nd
names, a
nd
br
a
nd
s a
pp
earing here
in
are
th
e property of
th
e
ir
r
es
pecti
ve
ow
ner
s.
Find the Instek GTP-060A-4 at our website: Click HERE

20MHzDual TraceOscilloscope
with Function Generator
MODEL: GOS-620FG
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

CONTENTS PAGE
............................................................................................... 1 . PRODUCT INTRODUCTION
1-1.Description ................................................................................................................
1-2.Feature ......................................................................................................................
....................................................................
2 . TECHNICAL SPECIFICATION
......................................................... 3 . PRECAUTIONS BEFORE OPERATION
...............................................................................................
3-1.Unpacking the instrument
.............................................................................................. 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 ...........................................................................
4 . PANEL INTRODUCTION ..........................................................................
4.1.Front Panel .................................................................................................................
4-2.Rear Panel ..................................................................................................................
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

CONTENTS PAGE
OPERATION METHOD
.............................................................................. 17
S.1.Basic Operation ............................................................................................................ 17
................................................................................................. 5.2.Dual.channel Operation 19
5.3.ADD Operation
............................................................................................................ 20
5.4.Triggering
.................................................................................................................. 22
5.S.TIM EIDIV Control
....................................................................................................... 23
5.6.Sweep Magnification
..................................................................................................... 23
5.7.X.Y Operation
............................................................................................................ 24
5.8.Calibration
................................................................................................................. 25
5.9.DC BALAdjustment
..................................................................................................... 25
5.IO.Function Generator
..................................................................................................... 25
MAINTENANCE ..................................................................................... 26
6.1.Fuse Replacement ........................................................................................................ 26
6.2.Line Voltage
............................................................................................................... 26
6.3.Cleaning
.................................................................................................................. 27
BLOCK DIAGRAM ................................................................................... 28
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

SAFETY TERMS AND SYMBOLS
Theseterms may appear inthis manual or on the product:
WARNING. Warning statements identify condition or practicesthat
could result ininjury or lossof life.
CAUTION. Caution statements identify conditions or practices that
could result indamage to this productor other property.
The following symbols may appear inthis manualor on the product:
DANGER ATTENTION Protective Frameorchassis
HighVoltage refer to Manual Conductor Terminal
Terminal
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

FOR UNITED KINGDOM ONLY
NOTE
This leadlappliance 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:
Green1
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 plugiappliance, 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.
This cable/appliance should be protected by a suitably rated and approved HBC mains
fuse
: refer to the rating information on the equipment andlor user instructions for
details. As a guide, cable of 0.75mmz should be protected by a 3A or 5A hse. 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 hse
& fuse carrier and disposed 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.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

EC Declaration of Conformity
We
GOOD WILL INSTRUMENT CO.,LTD.
(1) NO. 95 - I I, Pao Chung Rd., Hsin-Tien City, Taipei Hsien, Taiwan
(2) Plot 522, Lorong Perusahaan Baru 3, Prai Industrial Estate, 13600 Prai, Penang, Malaysia
declare, that the below mentioned product
GOS-620FG
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,92/3 l/E~C,93168/EEC)and Low Voltage
Equipment ~irective(73/231E~C).
For the evaluation regarding the Electromagnetic Compatibility and Low Voltage
Equipment
Directive, the following standards were applied:
EN50081-2: Electromagneticcompatibility -
(1993) Genericemission standard I Low Voltage Equipment Directive 73/23/EEC I
Part 2: industrial Environment
Conducted Emission
EN 5501 1 class B Low Voltage Directive EN 61010-1 : (1993)+A2:(1995)
Radiated Emiss~on (1991) I
I
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

1. PRODUCT INTRODUCTION
1.1 Description
The GOS-620FG oscilloscope + Function Generator is a portable-type, dual-channel oscilloscope with function generator.
Its bandwidth of DC is up to 20MHz, and its maximum sensitivity is ImVIDIV. The time base provides a maximum
sweep time of 0.2uSIDIV. The sweep speed becomes 100nSIDIV after magnifying 10 times. The oscilloscope uses a
6-inch rectangular type cathode-ray tube with red internal graticule. The Function Generator generates triangle wave, sine
wave, and square wave with the frequency range from 0.1Hz to IMHz.
The product is sturdy, easy to operate and exhibits high operational reliability.
1.2Features
1)High intensity CRT with high acceleration voltage:
The CRT is a high beam transmission and high intensity type with
a high acceleration voltage of 2kV. It displays readable
traces clearly even at high sweep speeds.
2) Wide bandwidth and sensitivity:
In addition to wide bandwidth, DC-20MHz (-3dB), the instrument provides high sensitivity of 5mVIDIV (ImVIDIV at
X 5 MAG). A 20MHz frequency is obtained with improved triggering synchronization.
3) Alternate triggering:
Even with an observation of two different frequency waveforms, each waveform can be triggered stably
4) TV sync triggering:
The oscilloscope has a sync separator circuit for TV-V and TV-H signals triggering.
5)CHI Output:
A signal from 50Q output terminal of CHI located on rear panel can be applied to frequency counteror other instruments.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

6) Z-Axis Input:
Intensity modulation capability permits time or frequency markers to be added. Trace blank with positive signal, TTL
compatible.
7) X-Y operation:
Set the switch to X-Y to operate the instrument as an X-Y oscilloscope. CHI can be applied as a horizontal deflection (X-axis)
while
CH2 provides vertical deflection (Y-axis).
8) Built-in Function Generator with BNC output of 50 '2.
9) Three kinds of waveforms are available with 50R output.
10)Waveform frequency
is up to I MHz.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

PECIFICATIONS
GOS-620FG20MHz OSCILLOSCOPE + FUNCTION GENERATOR
,OSCILLOSCOPE
lsensitivitv 15m~ - 5VIDIV. 10stem in 1-2-5 seauence
- -~~- - ~
Sensitivity Accuracy 53%
( x 5 MAG : 55%).
Vernier Vertical sensitivity To 112.5or less of panel-indicated value.
DC-20MHz
( x 5MAG: DC-7MHz).
'ERTICAL
AXIS
Frequency bandwidth AC coupling: Low limit frequency of 10Hz.
(With reference to IOOkHz, 8DIV. Frequency response at -3dB).
Rise time Approx. 17.5nS(x5 MAG: Approx. 50nS).
Input impedance Approx. 1M ohm 11 Approx. 25pF.
SquareWave Overshoot
: 5 5% ( At IOmVIDIV range).
Characteristics Other distortions and other ranges: 5% added to the above value.
DC Balance Shift Panel adjustable.
Linearity <iO.lDIV of amplitude change when waveform of 2 DIV at graticule center is moved vertically.
CHI
: CHI single channel.
CH2
: CH2 single channel.
Vertical modes DUAL
: CHI and CH2 are displayed. ALT or CHOP selectable at any sweep rate.
ADD
: CHI + CH2 algebraic addition.
Approx, 2jOkHHz,
Frequency
Input Coupling AC, GND, DC.
300Vpeak (AC: frequency IkHz or lower).
. .
Maximum Input Voltage Set probe switch at
1: 1, the maximum effective readout is 4Wpp(14Vrms at Sine wave).
set probe switch at
10: 1, the maximum effective readout is 400Vpp(140Vrms at Sine wave).
common Mode
50:l br better at 56wzsinusoidal wave. (When sensitivities of CHI and CH2 are set equally).
Ratio
Isolation between channels >1000:
1
at 50kHz.
(At 5mVIDIV range) >30:
1 at 20MHz.
CHI signal output At least 20 mvldiv into a 50Rterminal. Bandwidth is 50Hz to 5MHz at least.
CH2 TNV BAL. Balanced point variation: 51 DIV (Reference at center graticule).
-3-
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com