Related Manuals for Kenwood CS-3035
Summary of Contents for Kenwood CS-3035
- Page 1 20MHz COMPACT OSCILLOSCOPE CS-3035 INSTRUCTION MANUAL KENWOOD CORPORATION ©PRINTED IN JAPAN B50-7681-00(T) 90/12 1110 9 8 7 6 5 4 3 2 1 89/12 11 10 9 8 7 6...
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Page 2: Safety
SAFETY Symbol in This Manual fi\ This symbol indicates where applicable cautionary or other imformation is to be found. Power Source This equipment operates from a power source that does not apply more than 250 V rms between the supply conductors or between either supply conductor and ground. A pro- tective ground connection by way of the grounding conductor in the power cord is essen- tial for safe operation. -
Page 3: Table Of Contents
CONTENTS S A F E T Y OVERVIEW AND CONFIGURATION SPECIFICATIONS / j ^ PREPARATION FOR USE CONTROLS AND INDICATORS FRONT PANEL SIDE PANEL REAR PANEL TOP CASE SURFACE OPERATION INSTAL STARTING PROCEDURE [1] NORMAL S W E E P DISPLAY OPERATION [2] MAGNIFIED S W E E P OPERATION [3] X - Y OPERATION APPLICATION... -
Page 4: Overview And Configuration
OVERVIEW AND CONFIGURATION Overview This unit is a compact, light-weight, high performance portable oscilloscope equipped with rectangular CRT with internal graticule. The frequency bandwidth of 20 MHz and selectable sweep time of 0.2 /is/div to 1 s/div for the vertical axis allows use for a wide range of applications. It is also equipped with magnification functions for the vertical and horizontal axis, function allowing sta- H F R E J... -
Page 5: Specifications
SPECIFICATIONS Type Rectangular high luminance CRT (with internal graticule) Acceleration Voltage Approx. 1.8 kV Display Area 8 x 10 div flat-face (1 div = 6.35 mm) VERTICAL AXIS Operating Modes C H 1 , CH2, ALT, CHOP, ADD Sensitivity 5 mV/div to 5 V/div, +1-3% Sensitivity Magnification ...5 times + / - 5 % ( x 5 MAG used) Attenuator... - Page 6 SWEEP Sweep Type NORM: Triggering sweep AUTO: Sweep free runs in absence of trigger SINGLE: Single sweep Sweep Time to 1 s/div + / - 3 % in 21 ranges, 1-2-5 se- /xs/d'w quence, adjustable between ranges Sweep Magnification 5 times + / - 5 % ( x 5 MAG used) TRIGGERING Internal Sync...
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Page 7: J ^ Preparation For Use
PREPARATION FOR USE SAFETY Before connecting the instrument to a power source, carefully read the following infor- mation, then verify that the proper power cord is used and the proper line fuse is installed for power source. The specified voltage is shown at the left side of the power cord on the rear panel. - Page 8 6. Operation adjacent to equipment which produces strong AC magnetic fields should be avoided where possible. This includes such devices as large power supplies, transformers, electric motors, etc., that are often found in an industrial environment. Strong magnetic shields can exceed the practical CRT magnetic shielding limits and result interference and distortion.
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Page 9: Controls And Indicators
CONTROLS AND INDICATORS FRONT PANEL Fig. 2 - 1 © POWER Power switch for the oscilloscope. Pressing this control once turns the power on and pressing it again turns the power off. (D Pilot Lamp Lamp lights when the oscilloscope is on. (3) CAL Terminal Voltage terminal for calibration of probes. - Page 10 Fig. 2 - 2 (7) AC-GND-DC This lever selects the coupling method used for the CH1 vertical axis input signal. Input signal is AC coupled, and DC component is blocked. GND: Input signal and vertical amplifier are separated and input to vertical amplifier is grounded.
- Page 11 © C H 2 Inverts the polarity of the channel 2 signal. © $ POSITION/PULL x 5 MAG Performs the same function for channel 2 as the channel 1 y POSITION control. Serves as the Y position adjustment control during X-Y operation. ©...
- Page 12 © TRIGGERING MODE (TRIG MODE) Knob for selecting the triggering mode. AUTO: Triggered sweep operation when trigger signal is present, automatically gener- ates sweep (free run) in absence of trigger signal. NORM: Normal triggered sweep operation. Unlike AUTO, no sweep appears when the proper trigger signal is not applied.
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Page 13: Side Panel ;13
SIDE PANEL Fig. 3 @ GND Terminal Chassis ground terminal used for establishing a common ground with other equipment. @ EXT. TRIG Jack Input terminal for external trigger signal. When the TRIG SOURCE (§) control is set to NORM and © is set to EXT, the signal input to this terminal becomes the trigger signal. (28) SOURCE (TRIG SOURCE) Selects the trigger source (sync signal source). -
Page 14: Rear Panel
REAR PANEL Fig. 4 (§) Fuse Holder Contains the line fuse. Verify that the proper glass fuse is installed when replacing the line fuse. 100 V to 120 V 0.5A 200 V to 240 V 0.3A © Power Connector This is the connector for applying AC power. Use the supplied AC cord. -
Page 15: Top Case Surface
TOP C A S E SURFACE Fig. 5 (§) Connector Cover Used when option BP-70 (DC power supply) is used; This cover protects the connec- tor for supplying power. Loosen the screws on the front panel, remove the rear panel screws, rotate 180 degrees, and tighten the screws again to hold the cover in place. -
Page 16: Operation
OPERATION INITIAL STARTING PROCEDURE Until you familiarize yourself with the use of all controls, the following procedure may be used to standarize the initial setting of controls as a reference point and to obtain trace on the CRT in preparation for waveform observation. When using the probe(s), refer to probe's instructions and "PROBE COMPENSATION"... - Page 17 In the CHOP mode, the sweep is chopped at an approximate 50 kHz rate and switched between CH1 and CH2. Note that in the CHOP mode of operation with the SOURCE switch set to INT, TRIG © switch set to CH1 or CH2, the trigger source becomes the chopping signal itself, making waveform observation impossible.
- Page 18 T r i g g e r s i g n a l ( G a t e s i g n a l ) C H 1 ( I n p u t s i g n a l t o a m p l i f i e r , e t c .
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Page 19: Magnified Sweep Operation
(2) MAGNIFIED SWEEP OPERATION Since merely shortening the sweep time to magnify a portion of an observed waveform can result in the desired portion disappearing off the screen, such magnified display should be performed using the MAGNIFIED SWEEP. Using the POSITION control, adjust the desired portion of waveform to the CRT. -
Page 20: Application 2
APPLICATION PROBE COMPENSATION To obtain an accurate measurement result, the probe must be adjusted correctly before measurement. 1. Connect the probe to the INPUT terminal and set the control for a normal sweep display. 2. Connect the probe to the CAL terminal on the front panel, and adjust the SWEEP TIME/DIV control to display a few cycles of the signal output from it. -
Page 21: Measurement Of The Voltage Between Two Points On Awaveform
3. Set the AC-GND-DC switch to the DC position to observe the input waveform, includ- ing its DC component. If an appropriate reference level or VOLTS/DIV setting was not made, the waveform may not be visible on the CRT screen at this point. If so, reset VOLTS/DIV and/or the $ POSITION control. -
Page 22: Elimination Of Undesired Signal Components
3. Using the ^ • POSITION control, adjust the second point to coincide with the center vertical graduation line. 4. Measure the vertical distance between the two points and multiply this by the setting of the VOLTS/DIV control. If a probe is used, further multiply this by the attenuation ratio. Using the formula: Volts Peak-to-Peak = Vertical distance (div) x (VOLTS/DIV setting) x (probe attenuation ratio) -
Page 23: Time Measurements
S i g n a l c o n t a i n i n g u n d e s i r e d c o m p o n e n t 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 ( B r o k e n l i n e s u n d e s i r e d c o m p o n e n t e n v e l o p e ) A d j u s t t o t h e v e r t i c a l... -
Page 24: Frequency Measurements
[EXAMPLE] For the example, the horizontal distance between the two points is 5.4 divisions. If the SWEEP TIME/DIV is 0.2 ms/div we calculate. (See Fig. 13) Substituting the given value: Time = 5.4 (div) x 0.2 (ms/div) = 1.08 ms FREQUENCY MEASUREMENTS Frequency measurements are made by measuring the period of one cycle of waveform and taking the reciprocal of this time value as the frequency. -
Page 25: Application Of X-Y Operation
2. Count the number of cycles of waveform between a chosen set of vertical graduation lines. Using the horizontal distance between the vertical lines used above and the SWEEP TIME/DIV, the time span may be calculated. Multiply the reciprocal of this value by the number of cycles present in the given time span. - Page 26 2. Set the signal generator output for the normal operating level of the circuit being test- ed. If desired, the circuit's output may be observed on the oscilloscope. If the test cir- cuit is overdriven, the sine wave display on the oscilloscope is clipped and the signal level must be reduced.
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Page 27: Maintenance
MAINTENANCE A\ Caution : Read this page carefully to keep your safety. For Electric Shock Protection: Be sure to disconnect the power cable from the socket before conducting the following operation. MAINTENANCE There is high voltage used inside this unit. Never open the case. REPLACEMENT OF FUSES This oscilloscope will not function if the fuse has blown. - Page 28 A p r o d u c t of K E N W O O D C O R P O R A T I O N 17-5, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan...