Kenwood DCS-8200 User manual

PROGRAMMABLEDIGITAL
STORAGEOSCILLOSCOPE
DCS-8200
INSTRUCTION MANUAL
KENWOODCORPORATION
KENWOOD
©PRINTEDINJAPAN B63-0059-10(N)
16312

SAFETY
Simbol inThis Manual
A This symbol indicates where applicable cautionaryorotherinformationistobefound.
Power Source
This equipment operates from a power source that does notapply more than250V rms between thesupply
conductorsor between either supplyconductorand ground. A protective ground connectionbywayofthe
groundingconductorinthe power cordis essential for safe operation.
Grounding the Product
This equipment is grounded throughthegroundingconductorofthe power cord.Toavoid electrical shock,
plugthe power cord into a properlywired receptacle beforeconnectingtothe equipment inputoroutput
terminals.
Usethe Proper Power Cord
Useonlythe power cordandconnector specified for your product.
Usethe Proper Fuse
Toavoid fire hazard,usea fuseofthe correct type.
Donot Operate inExplosive Atmospheres
Toavoidexplosion,donotoperate this productinan explosive atmosphere.
Donot Remove Cover or Panel
Toavoidpersonal injury, donot remove thecoverorpanel.Refer servicing to qualified personnel.
Voltage Conversion
If the power sourceisnotappliedto your product,contact your dealer. Toavoid electrical shock,do
notperformthevoltageconversion.
* There are items in this manual thatareindicatedbya A mark.
This mark is used toindicate items with which caution must be used toprotectthesafetyofthe customer
using this instrument, andto prevent damage ordestructionofthe instrument.
Please read the manual carefully. anduse this instrument correctly.

CONTENTS
1. OUTLINE AND FEATURES i
2. SPECIFICATIONS • 2
3. PRECAUTIONS • 7
4. PANEL EXPLANATION 9
4-1FrontPanel • ••• 9
4-2RearPanel • • • 23
4-3Readouts • • 25
5. OPERATING PROCEDURES 28
Preparations BeforeOperation•••• ••• 29
[A] Normal Oscilloscope Operation • 29
1 Normal sweep display • • • • • 29
2 Sweep magnification ••31
3 X-Y operation • 32
4Video signal observation • ••32
5 Single sweep • • • 32
[B] Readout Display • • • • • 32
1 Readout ofset information • 32
2Cursor measurements • • 33
[C] Digital Storage Oscilloscope Operation • 34
1 NORMAL sampling • • • 34
2Pre- and post-trigger • • 35
3 Equivalent sampling ••• • 35
4 ROLL sweep 35
5 Peak detector mode• 36
6Averaging • • • 36
7 Interpolation functions •••• 37
8Reference memory operation • 37
9Operation functions • • 38
10Others • • « 38
[D] Programmable Oscilloscope Operation 39
1 Programmable WRITE • 39
2 Program Readout • • 39
[E] Pen Recorder and Plotter Output Methods • • 40
1Analog pen recorderoutput • 40
2 Digital plotter output • • 40
[F] AUTOSET (Automatic Range Setting) Operation 40
1 AUTOSET (Auto Range setting) 40

[G] External ControlOperation with GP-1B41
1 GP-IB control operation 41
6. EXAMPLES OFAPPLICATION• 43
[A] Examples of Applications Common to Real-time and Storage Oscilloscopes ••••• 45
1 Voltage measurements« • ...... <.-45
1) DC voltage measurementmethods• • ••.....45
a) Normal Procedures ••• • • •••• •••45
b)Cursor measurement procedures 45
2) AC voltage measurements•••••45
a) Measuring the voltage between2 points onthewaveform• • 46
b) Elimination of undesired signal components• 45
3)Voltage ratio measurements47
a) Overshoot • •••• 47
2Timemeasurements43
1) Timemeasurements••• • •••48
a) Normal procedures • 48
b)Cursor measurement procedures•••• ••• •••• 48
2) Time difference measurements• • • • 48
a) Normal procedures • • 48
b)Cursor measurement procedures • • • 48
3) Pulse width measurements49
a) Normal procedures • • •••• 49
b)Cursor measurement procedures•••• • • • 49
4) Rise time measurements49
a) Normal procedures • • 49
b)Cursor measurement procedures•••• • • 50
5) Time ratio measurements• •••50
a) Duty ratio • 50
3Frequency measurements• • ••••• •••• 51
1)Frequency measurements •••• 51
a) Normal procedures • • • • 51
b)Cursor measurement procedures •••51
2) Phase difference measurements• 51
a) Normal procedures • • • 51
b)Cursor measurement procedures 52
4 Relative measurements• • 52
1)Voltage•••• • • 52
2)Period • • • •••• 53
5 Applications ofX-Y operation • 53
1) Phase • 53
2)Frequency • •••54
[B] Examples of Storage Oscilloscope Applications • 55
1 Storage waveformmeasurement using the hold mode • 55
2Single-phenomenameasurements• 56
1) Waveform observationbefore the trigger point • 56
2) Waveform observation after the trigger point • • • 57
3) Measurements using data interpolation • 53

3 Low frequency signalobservations 59
1) Long time observastions (unattended measurements) 59
2)Roll mode 59
3) Peak detectorapplications • 59
4 Repetition phenomena measurements •••• 60
1)Extraction of signals hidden by noise • 60
2) Highspeed phenomena measurements • 61
5 Waveform data relative measurements • • • 62
1) Useof referencedata 62
6Data output • • • • ••• 63
1)Plotter output • 63
2) Pen output • 63
[C] Programmable OscilloscopeApplications • • 64
1 Applications of fixed formmeasurements • 64
1) Program functionapplicationswith a separateoscilloscope - 64
7.GP-IBINTERFACE 67
7-1 OUTLINE • • 67
7-2GP-IBSPECIFICATIONS • • • • • 67
1) Bus line configuration • 67
2)Interfacefunction • • • 68
3)Multiline interface message commands 69
4)Uniline commands • 71
7-3GP-IB HARDWARE SETTINGS • • • 72
1) Connections • • 72
2) DIP switches • •••• • • 72
7-4BASIC STRUCTURE OFCOMMAND FORMAT • • • 73
1) Command format • 73
2) Commands • • • 73
3) Command functions 74
4)Processing when errors occur 74
5)Processing when parameters are omitted • 74
6)Processing when there are field abbreviations •••75
7) GP-IBremote mode • 75
8)Servicerequests 75
9) Expansion statusbytes • • • 75
10)Statusbytes 75
7-5 LIST OFCOMMANDS• >>>77
1 Statusrequests • • 79
2 Vertical axis • 79
3Horizontal axis • 82
4TRIGGER • • 85
5 Cursor • • • 87
6Programs • 89
7 Storage • 91

8 AUTO SET• ' • 96
9 Data transfer request 97
10Data transfer • • • 98
7-6 PROGRAM EXAMPLES • • • ••99
(With the PC-98) • 99
(With the IBM-PC) ••••••••• • 104
8. MAINTENANCEANDADJUSTMENT• 109
[A] Maintenance • 110
1 Fusereplacement • • •*•HO
2 Power supply voltage changes•••• • •••• • HO
[B] Adjustments(compensation)•••• • • 110
1 Probecompensation • • • ••• • 110
2 Trace rotation compensation••••• • 110
3Calendar and time settings • • ni
OPTIONS • • • 112

1. OUTLINE AND FEATURES
Because the DCS-8200 hasa largecapacity memoryfor each channel, even atthe very low sampling time of
500s per division, continuous measurements ontwo channelssimultaneo usly canbe performed for11 hours.
980-divisionpre-triggeringthat utilizes the advantages ofthe largecapacity memoryand 10,000-division
post-triggering(delaytriggering) are possible.Also, the values are converted into time units and
displayed.
9 Ithasan Auto Set function in which a knob onthe panel isset automatically bya single button
operation.
9 With this machine alone, a program with asmanyas20 steps canbe executed, and full remote control
is possiblewith the GP-IB.
9 Video signals can also be storedwith memoryto spare, and with the largecapacity memory,the before
andafterrelations ofthe signals canbe analyzed over a wide range.
#The waveforms ofCHIandCH2canbe displayed asa direct waveform bythe 4-arithmetic operations
( + , -,x and -5-).Also, by saving theCHIandCH2 waveforms inthe reference memory,the
original waveform andthe calculated waveform canbe displayed onthe screen atthe same time.
9 Itis equipped with waveform processing functions such as averaging, envelope, sineinterpolation,
linear interpolation, etc.
9After the single sweep hold, there isa time stamp functionthat can record the sweep time.
9Besides, of course, data transmission, the GP-IB interface and RS-232C plotterinterface,that canbe
operated from the panel, are standard equipment.
9X-axis/Y-axis output that canbe used with your pen recorder is provided.
9 For very small portionsthat are difficult to observe with the digital oscilloscope, this instrument can
be used asa real-time ora programmable oscilloscope.
§ Because ofthe newly developed original gate array used inthe readout section and logicsection of
the A/D converter unit, the reliability is increased, and miniaturization is achieved.
1

2. SPECIFICATIONS
2
[ReaI-Time section]
CRT
Type : 150mm rectangulerwith internal graticule
Acceleration voltage : 12kV
Effective Surface : 8x10div(1div= 10mm)
Vertical Axis (CMandCH2)
Sensitivity : 1 to5 mV/div ±3%
Attenuator : 1 to5 mV/div 1-2-5 step, 5 ranges
Input impedance : 1 MQ+ 1 %, 22pF ± 3pF
Freq. responce : DC:DCto50MHz-3dB(5mVto 5V/div)
DCto5 MHz-3dB(1to 2mV/div)
AC:5 Hzto50MHz-3dB(5mVto 5V/div)
5 Hzto5 MHz-3dB(1to 2mV/div)
Rise time : 7 nsor less (50MHz)
Operation modes: CHI.CH2,ALT, CHOP, ADD (CH1+CH2)
CHOP frequency : Approx. 250kHz
Channel polarity : Possibleonlywith CH2
AMax. inputvoltage : 800Vp-p, or 400V (DC+AC peak)
Horizontal axis (CH2 input, except forX10 magnification)
Operation modes: Switchable toX-Y mode withhorizontal mode,
CHI:Y-axis CH2: X-axis
Sensitivity : Sameas vertical axis (CH2)
Input impedance : Sameas vertical axis (CH2)
Freq. responce : DC:DCto1 MHz (-3dB)
AC:ACto1MHz (-3dB)
X-Y phase difference : 3° or less at100kHz
AMax. inputvoltage : Sameas vertical axis (CH2)
Sweep
Sweep system : NORM, AUTO, SINGLE
Sweep time : 0.5s/div to 0.l^s/div ±3%,1-2-5 step, 21 ranges
Sweep magnification : 10 times ±5% (real-time only)
Linearity : ±3X (xlOMAG : ±5X)
Triggering
Internal trigger : CHI,CH2, LINE
External trigger : EXT
External trigger input impedance : 1 MQ
AMax. external trigger inputvoltage : 800Vp-p, or 400V (DC+AC peak)
Triggercoupling : AC, HFHEJ., DC,TV-FRAME, TV-LINE

Trigger sensitivity
Frequency Range
Internal External
DC DC
to10 MHz
DC to 50MHz
1 div
2 div
0.1 Vp-p
0. 2 Vp-p
AC
10 Hzto 10 MHz
10 Hz to 50MHz
1 div
2 div
0.1 Vp-p
0. 2 Vp-p
HFrej
Increased minimum syncamplitude for
above 10kHz.
TV
FRAME, LINE
1 div 0.1 Vp-p
Calibration voltage : Square wave, positivepolarity, 1 Vp-p ±2 %, 1 kHz ±3 %
AUTO : Same as above specification for above 50Hz.
FIX : Same as above specification for above 40Hz.
3
[Storage section]
Vertical resolution
Data length : 8-bit (25 dot/div)
Dynamic range : Approx. 10 div
Freq. responce
Effective storagefrequency : DC:DCto8 MHz, (sin interpolation)
AC: 5 Hzto8 MHz, (sin interpolation)
Equivalent sampling : DC:DCto50MHz
AC: 5Hz to 50MHz
Rise time
Effective rise time : 80nsor less
Memory capacity
NORM : Display memory (including REF memory) 2KWX 2/CH (200 dot/div)
Acquisition memory 16KW/CH
REF memory 16KW/CH
Equivalent sampling : Display memory (including REF memory) 2KWx 2/CH (200 dot/div)
Acquisition memory 2KW/CH
REF memory 2KW/CH
Roll : Display memory (including REF memory) 2KWx 2/CH (200 dot/div)
Acquisition memory 16KW/CH
REF memory 16KW/CH
Averaging : Display memory (including REF memory) 2KW/CH (200 dot/div)
Acquisition memory 5KW/CH
X-Y : Display memory (including REF memory) 2KW/CH (200 dot/div)
Acquisition memory 2KW/CH
REF memory 2KW/CH
REF memory data backup (32KW) :
System : Capacitance system
Life : 7 days or more
Sweep time
Equivalent sampling : 20 ns/div to 5/^s/div
NORM : 0.1 ^s/div to 100 ms/div (0.1 jus/div to 5,"s/div is magnificationrange).
Roll : 0.2s/div to 500s/div
* Max. sampling speed is 20 MS/s, 2-channel sync.
Storage system
NORM : Data updated for every trigger input
SINGLE : Single sweep write
AVERAGE : 2 to 256 times, average of adding (2, 4,8... 256)

PEAK DETECTOR: 100ns glitch detection
Effective sweep range (500s/div to 0. lms/div)
ROLL : Data is recorded on screencontinuously and updated.
Equivalent sampling : Sequential sampling system
Magnification and reduction
Magnification and reduction are performed centered ontheCRT with SWEEP TIME/DIV control (when the
starting point issetatthe left edge ofthe screen.).
Magnification : Max.100x
Reduction : Max.xl/10
Interpolation
Systems : Linear interpolation, sin interpolation
Trigger delay
Pre-trigger : Upto-80 times ofSWEEP TIME/DIV setting (integer times setting)
Post-trigger : Upto +10,000 times ofSWEEP TIME/DIV setting (integer times setting)
X-Y
NORM : DCto800kHz
Equivalent Sampling : DCto50MHz
PENOUT
Output : CRT display and hardcopy (25KW)
Y axis Output voltage, 0.5V/div
Outputimpedance,approx. 2kQ
Readoutspeed, lOms/word and 50ms/word
X axis Output voltage, 0.5v/div
Outputimpedance,approx. 2kQ
Readoutspeed, lOms/word and 50ms/word
PEN DOWN
Output level : TTL level ("L" duringoperation)
Waveform operation
CHI + CH2,CHI- CH2,CHIX CH2,CHIH-CH2
Plotter output
Output : RS-232C, HP-GL command (made byMuto Industries, forHP-GL plotter), forCRT hardcopy,
data transmission only.
Baud rate : 9600,4800,2400 and1200bps.
Transfer system : Data length 8-bit, no parity, stop bit is 2-bit fixed, hardware-hand shake.
Signals : FG (FrameGround)
SD (SendData) -* plotter
RD (Receive data) *- plotter
RS (Request to send) -«• plotter
CS (Clear to Send) — plotter
DR (Data Set Ready)Request to sendfrom plotter *- plotter
ER (Data Terminal Ready) Permission to sendfrom plotter -» plotter
SG (Signal Ground)
Connections : (DCS-8200 side) (Plotter side)
1
Shild
2 Blue
3
Red
4
Gray
5
Brown
6 Yellow
7
Q
Black
0
20 Green
Shild 1
Red 2
SD
Blue 3
RD
Yellow 4 RS
Green 5 CS
Gray
6
DR
Black
7
0
SG
Brown
O
20 ER
4