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Kenwood MS-1660 Instruction Manual
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Kenwood MS-1660 Instruction Manual

Kenwood MS-1660 Instruction Manual

Digital memory scope
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M S - 1 6 6 0
(DIGITAL M E M O R Y
S C O P E )
INSTRUCTION MANUAL

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Summary of Contents for Kenwood MS-1660

  • Page 1 M S - 1 6 6 0 (DIGITAL M E M O R Y S C O P E ) INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    S A F E T Y Symbol Manual U s e the Proper P o w e r Cord in T h i s Use only the power cord and connector specified for your T h i s symbol indicates where applicable cautionary or other information is to be found.

  • Page 3: F E A T U R E S

    F E A T U R E S The digital memory scope MS-1660 consists of a DC-20MHz The contents of the memory can be read out or written bandwidth, dual-trace oscilloscope with a built-in digital via G P - I B so that external data can be monitored on the memory.

  • Page 4: S P E C I F I C A T I O N S

    S P E C I F I C A T I O N S S W E E P C R T Sweep: N O R M ; Trigger sweep Model: 150 F T M 3 1 : Rectangular, with A U T O ;...
  • Page 5 G A T E O U T P U T D A T A O U T P U T Output waveform: Positive pulse triggered to D/A converter: 8-bit resolution sweep Output level: M E M O R Y O U T : 1.6Vp-p ± 3 % Output voltage: T T L level relative to input full scale...

  • Page 6: Preparation For U S E

    P U L L position, the waveform may be disturb- power receptacle only after this confirmation is made. ed by noise. 2. T h e MS-1660 should be installed at a place meeting the 8. Never cover the ventilating holes in the top of the scope, following conditions: as this will increase the operating temperature inside the o The MS-1660 is not exposed to direct sunlight.

  • Page 7: C O N T R O L S A N D I N D I C A T O R S

    C O N T R O L S A N D I N D I C A T O R S Fig. 1 FRONT PANEL © POWER, S C A L E I L L U M Control A S T I G : Astigmatism adjustment provides optimum Turns power on/off and varies graticule brightness.
  • Page 8 Fig. 2 y M E M O R Y POSITION Control V O L T S / D S V Control Adjusts the vertical position of the stored waveform. Vertical attenuator for channel 1 . Provides step adjust- With selection of the S A M P L I N G C L O C K A Control, ment of vertical sensitivity in 1-2-5 sequence.
  • Page 9 ^ POSITION Control the difference between C H 1 and C H 2 signals when C H 2 I N V is selected). For C H 2 , the control provides the same function as T h e screen provides a dual trace display the P O S I T I O N Control @ for C H 1 .
  • Page 10 Fig. 3 N O R M : Normal triggered sweep operation. No trace A C : T h e trigger signal is capacitively coupled with will be presented when a proper trigger signal the trigger circuit. is absent. The D C component of input signal is blocked. While the stored waveform is displayed on the H F R E J : Trigger signal is D C coupled with the trigger screen, only the stored waveform is displayed...
  • Page 11 (32) D I S P L A Y MODE Switches next push of the start button. ( P U L L D I S - The MS-1660 operates as a dual-trace oscilloscope by P L A Y T I M E 6| must be O F F . )
  • Page 12 C U R S O R Switch N O T E : Displays the bright spot (cursor point) on the main The proper waveform may not be obtained if this switch is channel side according the combinations of settings of changed to the F R E E R U N mode while the memory con- M O D E (20) and D I S P L A Y M O D E (32) .
  • Page 13 Fig. (40) PEN S P E E D Selector execute the next write upon receipt o f a trigger signal. With P E N / S C O P E @ selector set to the P E N position, this switch becomes effective to select a read speed of P R E T R I G : A write to memory is started not by manual the P E N output in 3 steps: 10, 2 0 , and 50 ms/word.

  • Page 14: Rear Panel

    Fig. 5 REAR PANEL N O T E : S W E E P G A T E J a c k It is impossible to set a P E N S P E E D value and O N / O F F The positive-pulse gate waveform synchronized with state for either jack independently of the other.
  • Page 15 ( S T ) GND Terminal (55) Power Connector The ground terminals for G P - I B connection. When the The power cord provided is plugged here. short bar (metal fitting) is connected between these (56) Voltage Selector terminals, the G N D line in the G P - I B connector will be grounded to the case.

  • Page 16: O P E R A T I O N

    O P E R A T I O N When using a probe, refer to its instruction manual, as well Before turning on the scope, set the front panel controls paragraph " P R O B E C O M P E N S A T I O N " under shown below.
  • Page 17 I N T E R N A L T R I G G E R I N G level becomes attenuated, resulting in difficulty By setting S O U R C E selector @ to C H 1 , C H 2 , or L I N E , triggering.

  • Page 18: [2] Magnified Sweep Operation

    [2] MAGNIFIED SWEEP OPERATION A U T O T R I G G E R . Since merely shortening the sweep time to magnify a por- With the T R I G G E R I N G M O D E selector (27) set to A U T O , tion of the waveform on the screen can result in the desired the sweep circuit is set in the free run mode while the portion disappearing off the screen, such magnified dis-...

  • Page 19: Memory Scope Operation

    MEMORY SCOPE OPERATION Write operation can also be started repeatedly at regular time intervals by using the P U L L D I S P L A Y T I M E control. [ 1 ] WAVEFORM OBSERVATION If the signal applied to the unit is not a continuous wave Set each control to display the waveform as in the case of but is sporadic, the trace develops a flickering bright spot an ordinary oscilloscope.
  • Page 20 ( 4 ) D I S P L A Y M O D E : P R E T R I G - D E L A Y M O D E : A D D M O D E : C H 1 or C H 2 2 0 4 8 W W a v e f o r m o f C H 1 o r C H 2 2048W...

  • Page 21: Reading To Pen Recorder

    [3] CONTROL BY GP-IB f) R E N (Remote enable) The MS-1660 has G P - I B communication capabilities to send signal from the controller, for switching each out data from the memory or receive data from outside device into remote or local control mode.
  • Page 22 The local mode is restored simply by turning S A M P L I N G A S C I I representation. C L O C K B @ off the G P - I B position, unless the MS-1660 W 2 : Transfers 2 K bytes of data (binary) from the is in local lockout state.
  • Page 23 APPLICATION APPLICATIONS AS OSCILLOSCOPE 3. Set the A C - G N D - D C switch to D C to observe the wave- form including its d c component. If an inappropriate PROBE COMPENSATION reference level position or an inappropriate V O L T S / For accurate measurement, the probe should be compensat- D I V setting was made, the wave form...
  • Page 24 MEASUREMENT OF V O L T A G E ELIMINATION OF UNDESIRED SIGNAL BETWEEN TWO POINTS ON A WAVEFORM COMPONENTS This procedure may be used to measure the peak-to peak The A D D feature can be conveniently used to cancel out voltages, or the voltage difference between any two points, the effect of an undesired signal component.
  • Page 25 A d j u s t t o t h e v e r t i c a l s c a l e w i t h : < > P O S I T I O N . A d j u s t t o h o r i z o n t a l c e n t e r S i g n a l w i t h o u t u n d e s i r e d c o m p o n e n t H o r i z o n t a l d i s t a n c e...
  • Page 26 [ E X A M P L E ] PULSE WIDTH MEASUREMENTS For the example shown in F i g . 18, suppose that a period of Pulse width can be measured as follows: 4 0 jus was observed and measured. Then the frequency is: Procedure: F r e q = 1 / [ 4 0 x 1 0 "...

  • Page 27: A P P L I C A T I O

    The total horizontal distance is then D plus D . Multi- Use the V O L T S / D I V and V A R I A B L E controls to adjust ply the total distance by the S W E E P T I M E / D I V setting the waveform peak-to-peak height to six divisions.
  • Page 28 Time = Horizontal distance (div) x ( S W E E P T I M E / D I V 1 c y c l e = 8 d i v . setting) x " x 10 M A G " value" (1/10) - R e f e r e n c e s i g n a l C o m p a r i s o n signal...
  • Page 29 3. Remove the reference signal and apply the unknown signal to I N P U T jack. Set the V O L T S / D I V control to for eacy observation. Measure the amplitude of the dis- played waveform, and use the following relationship to calculate the voltage of the unknown waveform.
  • Page 30 R e f e r e n c e s i g n a l A d j u s t e d r e f e r e n c e signal • Period Setting the relative sweep coefficient with respect to a re- ference frequency signal: 1.
  • Page 31 U n k n o w n f r e q u e n c y t o S i n e 0 = R a t i o o f u n k n o w n w h e r e <t> = p h a s e a n g l e v e r t i c a l I n p u t , s t a n d a r d t o s t a n d a r d f r e q u e n c y t o h o r i z o n t a l I n p u t...

  • Page 32: A P P L I C A T I O N A S A D I G I T A L M E M O R Y Scope

    MS-1660 memory scope provides the capability D I S P L A Y M O D E : P R E T R I G - D E L A Y of easier waveform observation and data processing, allow- C U R S O R : Center ing applications in a wider range.
  • Page 33 (3) Observing different waveforms using dual-channel and dual-clock functons 2 0 4 8 W P a r t s m o u n t e d D e v i c e u n d e r W a v e f o r m o f C H 1 i n p u t s i g n a l t e s t C o n t r o l l e d b y S A M P L I N G C L O C K A ( 5 0 M s / w o r d ) -...

  • Page 34: Power Input Voltage Configuration

    F a c t o r y i n s t a l l e d P l u g c o n f i g u r a t i o n P o w e r c o r d a n d p l u g t y p e L i n e c o r d t>lug fuse i n s t r u m e n t f u s e N o r t h A m e r i c a n...
  • Page 35 MEMO...
  • Page 36 A product of TRIO-KENWOOD CORPORATION 17-5, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan © 65704 P R I N T E D IN J A P A N B50-7559-10 ( N )

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