Kenwood CS-1045 Instruction Manual Download Page 21

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T I M E M E A S U R E M E N T S

This is the procedure for making time measurements be-

tween two points on a waveform. The combination of the

SWEEP TIME/DIV and the horizontal distance in divisions

between the two points is used in the calculation.

Procedure:

1. Apply the signal to be measured to the INPUT jack. Set

the vertical MODE to the channel to be used. Adjust the

VOLTS/DIV and SWEEP TIME/DIV for a normal display.

Be sure that the VARIABLE control is set to C A L posi-

tion.

2. Using the • POSITION control, set one of the points to

be used as a reference to coincide with the horizontal

centerline. Use the < • POSITION control to set this

point at the intersection of any vertical graduation line.

3. Measure the horizontal distance between the two

points.

Multiply this by the setting of the SWEEP TIME/DIV con-

trol to obtain the time between the two points. If

horizontal " X 10 MAG " is used, multiply this further by

1/10.

[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. 19)

Substituting the given value:

Time = 5.4 (div) x 0.2 (ms) = 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.

Procedure:

1. Set the oscilloscope up to display one cycle of

waveform (one period).

2. The frequency is the reciprocal of the period measured.

Using the formula:

Freq =

period

Adjust to horizontal

center line with

A POSITION

Using the formula:

Time = Horizontal distance (div) x (SWEEP TIME/DIV set-

t i n g ) x " x 1 0 M A G " v a l u e

(1/10)

[EXAMPLE]

A period of 4 0 /*s is observed and measured. (See Fig. 20)

Substituting the given value:

F r e q = 1 / [ 4 0 x 1 0 "

] = 2 . 5 x 1 0

= 2 5 kHz

While the above method relies on the measurement directly

of the period of one cycle, the frequency may also be

measured by counting the number of cycles present in a

given time period.

1. Apply the signal to the INPUT jack. Set the vertical

MODE to the channel to be used and adjusting the

various controls for a normal display. Set the VARIABLE

control to C A L position.

2 1

Signal without undesired component

Fig.

Adjust to the vertical scale

with POSITION

Horizontal distance

Fig. 19

1 cycle = 40/ts (5/ts/div. x 8 div.)

Fig. 20

Summary of Contents for CS-1045

Page 1: ...60MHz TRIPLE TRACE OSCILLOSCOPE C S 1 0 6 5 40MHz TRIPLE TRACE OSCILLOSCOPE C S 1 0 4 5 INSTRUCTION MANUAL ...

Page 2: ...ltage conversion SAFETY 2 FEATURES 3 SPECIFICATIONS 4 PREPARATION F O B U S E 7 C O N T R O L S A N D INDICATORS 9 FRONT PANEL 9 REAR PANEL 13 OPERATION 14 INITIAL STARTING PROCEDURE 14 1 NORMAL SWEEP DISPLAY OPERATION 14 2 MAGNIFIED SWEEP OPERATION 17 3 DELAYED SWEEP OPERATION 17 4 ALTERNATING SWEEP OPERATION 17 5 X Y OPERATION 18 6 VIDEO SIGNAL OBSERVATION 18 7 SINGLE SWEEP OPERATION 18 APPLICAT...

Page 3: ...ol the waveform is easy observed in darkened area and the photograph of the waveform is easy provided a single photograph of the waveform superimposed on the graticule scale 10 Delay sweep modes are available in not only Con tinuous Delay AFTER DELAY and trigger Delay TRIG but also both A and B zero Delay DELAY 0 allowing to observe the whole extent of any com plicated pulse train with magnifictio...

Page 4: ... V div 23 4 nsec or less 1 mV div 2 mV div Signal Delay Time Approx 20 nsec on the CRT screen Crosstalk 40 dB minimum Operating Modes CH1 single trace CH2 single trace DUAL CH1 and CH2 dual trace ADD CH1 CH2 added as a single trace TRIPLE C H 1 CH2 and CH3 triple trace Chop Frequency Approx 250 kHz Channel Polarity Normal or inverted channel 2 only inverted Maximum Input voltage 500 Vp p or 250 V ...

Page 5: ...t x 10 MAG Holdoff Continuously variable from NORM to more than ten times MAX Trace Separation B sweep can be separated from A sweep up to 4 divisions downward continuous ly adjustable Delay Method Continuous delay AFTER DELAY Trigger delay TRIG Trigger delay TV LINE Zero delay DELAY 0 Delay Time From 500 nsec to 0 5sec Available delay time is 0 2 to 10 times the A sweep time setting continuously ...

Page 6: ...nto 50 0 100 Hz to 40 MHz 3 dB into 50 0 1 mV div 2 mV div 100 Hz to 20 MHz 3 dB into 50 Q 100 Hz to 15 MHz 3 dB into 50 0 POWER REQUIREMENT Power Supply 100 V 120 V 220 V 240 V A C 1 0 Line Frequency 50 60 Hz Power Consumption Approx 61 W DIMENSIONS W x H x D 319 359 x 132 145 x 380 455 mm dimensions include protrusion from basic outline dimensions WEIGHT Approx 9 2 kg ENVIRONMENTAL Within Specif...

Page 7: ...ctric 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 7 Probe compensation adjustment matches the probe to the input of the scope For best results compensation of probe should be adjusted initially then the same pro be always used with the input of scope Probe compen s...

Page 8: ...50 Hz Rated 16 amp 0 63 A 250 V T lag 5 x 20 mm None U K 240 volt 50 Hz Rated 13 amp 0 7 A 250 V Fast blow 6 x 30 mm 0 7 A Type C Australian 240 volt 50 Hz Rated 10 amp 0 7 A 250 V Fast blow 6 x 30 mm None North American 240 volt 60 Hz Rated 15 amp 12 amp max NEC 0 7 A 250 V Fast blow 6 x 30 mm None Switzerland 240 volt 50 Hz Rated 10 amp 0 7 A 250 V Fast blow 6 x 30 mm None Fig 1 Power Input Volt...

Page 9: ...tch which operates as follows AC Blocks dc component of channel 1 input signal GND Opens signal path and grounds input to vertical amplifier This provides a zero signal base line the position of which can be used as a reference when performing dc measurements DC Direct input of ac and dc component of channel 1 input signal 5 INPUT Jack Vertical input for channel 1 trace Vertical input for X Y oper...

Page 10: ...the channel 1 waveform and the difference is displayed as a single trace TRI Displays channel 1 2 and 3 signals on the screen POWER SCALE ILLUM Fully counterclockwise rotation of this control OFF posi tion turns off oscilloscope Clockwise rotation turns on oscilloscope Further clockwise rotation of the control in creases the illumination level of scale TRACE ROTATION Electrically rotates trace to ...

Page 11: ...cted for triggering TV LINE Horizontal sync pulses of a composite video signal are selected for triggering CH3 or EXT TRIG Input terminal of channel 3 signal or external trigger signal When vertical MODE is set at TRI not only channel 1 and channel 2 input signals but channel 3 signal is observable simultaneously When the SOURCE switch is set to EXT CH3 this signal triggers sweep HORIZ MODE Used t...

Page 12: ...T DELAY 0 Hereafter DELAY 0 is described as DELAY TIME ZERO A and B sweeps are triggered simultaneously regardless of DELAY TIME MULT setting This mode is used to observe the first portion of complicated period of pulse trains with magnification A SWEEP TIME DIV Horizontal coarse A sweep time selector Selects calibrated sweep times of 0 05 ts div to 0 5 s div in 22 steps for CS 1065 0 1 ts div to ...

Page 13: ...weep up to 4 divisions Fig 5 REAR PANEL Z AXIS INPUT Jack External intensity modulation input terminal Positive voltage decreases brightness negative voltage in creases brightness CH1 OUTPUT Jack CH1 vertical output signal connector AC coupled output connector This connector is used to measure the frequency by connecting the frequency counter When the VOLTS DIV control 2 is at 1 mV fre quency meas...

Page 14: ...ference of the two waveforms CH1 CH2 is displayed If both channels are set to the same VOLTS DIV the sum or difference can be read directly in VOLTS DIV from the CRT The DUAL mode allows simultaneous observation of channel 1 and channel 2 waveforms The TRI mode allows simultaneous viewing of channel 1 thru channel 3 input signals In the TRI mode either the CHOP or ALT mode applies and must be sele...

Page 15: ...signal at the EXT TRIG INPUT jack becomes the trig ger This signal must have a time or frequency relationship to the signal being observed to synchronize the display Ex ternal sync is prefered for waveform observation in many applications For example Fig 7 shows that the sweep cir cuit is driven by the gate signal when the gate signal in the burst signal is applied to the EXT TRIG INPUT jack Fig 7...

Page 16: ...ardless of the position of LEVEL control as shown in Fig 10 c When the input signal is suddenly changed from a square waveform to a pulse waveform the trigger point is shifted extremely toward the side of the waveform unless the triggering level is readjusted as shown in Fig 11 a See Fig 11 a 2 Also if the trigger point has been set to the of squarewave Fig 11 b 1 and the input signal is changed t...

Page 17: ... x A SWEEP TIME DIV setting 5 For Starts AFTER DELAY operation apparent jitter in creases as magnification increases To obtain a jitter free display set the B TRIG MODE to TRIG In this Triggerable After Delay mode the A trigger signal selected by the SOURCE switch fj becomes the B trig ger source Fig 13 Magnified view of intensified zone above Note that for this type of operation both the DELAY TI...

Page 18: ...is case use SLOPE 6 SINGLE S W E E P OPERATION This mode of display is useful for looking at non synchronous or one time events Procedure 1 Set the A TRIG MODE to either AUTO or NORM Apply a signal of approximately the same amplitude and frequency as the signal that is to be observed as the trig ger signal and set the trigger level 2 Set A TRIG MODE to RESET observe that the READY indicator LED li...

Page 19: ...D DC switch again to GND Multiply the distance measured above by the VOLTS DIV setting and the probe attenuation ratio as well Voltages above and below the reference level are positive and negative values respectively Using the formula DC level Vertical distance in divisions x VOLTS DIV set ting x probe attenuation ratio TRACE ROTATION COMPENSATION Rotation from a horizontal trace position can be ...

Page 20: ...ts are separated by 4 4 divi sions vertically Set the VOLTS DIV setting be 0 2 V div and the probe attenuation be 10 1 See Fig 17 ELIMINATION OF UNDESIRED SIGNAL COMPONENTS The ADD feature can be conveniently used to cancel out the effect of an undesired signal component which may be superimposed on the signal you wish to observe See Fig 18 Procedure 1 Apply the signal containing an undesired comp...

Page 21: ...s 0 2 ms div we calculate See Fig 19 Substituting the given value Time 5 4 div x 0 2 ms 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 Procedure 1 Set the oscilloscope up to display one cycle of waveform one period 2 The frequency is the reciprocal of the period measured U...

Page 22: ... Horizontal distance div x SWEEP TIME DIV setting x x MAG 10 value 1 1 10 Adjust to the vertical scale with POSITION EXAMPLE For the example the distance width at the center horizon tal line is 4 6 divisions and the SWEEP TIME DIV is 0 2 ms See Fig 22 Substituting the given value Pulse width 4 6 div x 0 2 ms 0 92 ms PULSE RISETIME AND FALLTIME MEASUREMENTS For risetime and falltime measurements th...

Page 23: ... MEASUREMENTS This procedure is useful in measurement of time dif ferences between two signals that are synchronized to one another but skewed in time Procedure 1 Apply the two signals to CH1 and CH2 INPUT jacks Set the vertical MODE to DUAL choosing either ALT or CHOP mode Generally for low frequency signals CHOP is chosen with ALT used for high frequency signals 2 Select the faster of the two si...

Page 24: ...touching the VARIABLE control and if necessary the trigger level can be readjusted In this case the phase difference can be obtained from the SWEEP TIME DIV setting for 8 divisions cycle and the new SWEEP TIME DIV setting changed for higher accuracy by useing the following formula Phase difference Horizontal distance of new sweep range div x45 div New SWEEP TIME DIV setting x Original SWEEP TIME D...

Page 25: ... the INPUT jack using the VOLTS DIV and VARIABLE to obtain an easily observed waveform display Using the SWEEP TIME DIV and SWEEP VARIABLE ad just one cycle of the reference signal to occupy a fixed number of scale divisions accurately After this is done be sure not to disturb the setting of the VARIABLE con trol 2 The Sweep horizontal calibration coefficient is then the period of the reference si...

Page 26: ...e delayed sweep is deter mined by the values set by the A and B SWEEP TIME DIV controls 1 Apply a signal to the INPUT jack and set the vertical MODE to the channel to be used adjusting VOLTS DIV for an easily observed display of the waveform and the other controls if necessary 2 Set the A SWEEP TIME DIV so that several cycles of the waveform are displayed Set the B TRIG MODE to AFTER DELAY When th...

Page 27: ...us the first dial reading multiplied by the A SWEEP TIME DIV setting Using the formula Period 2nd dial reading 1 s t dial reading x Delayed sweep time A SWEEP TIME DIV setting Delay time EXAMPLE For the example the first dial setting is 1 01 and the second is 6 04 The setting of A SWEEP TIME DIV is 2 ms See Fig 33 Substituting the given value Period 6 04 1 0 1 x 2 ms 10 06 ms PULSE WIDTH MEASUREME...

Page 28: ...possible 3 Using the DELAY TIME MULT adjust the intensified por tion to coincide with the first pulse Set the HORIZ MODE to ALT and use TRACE SEPARA TION to adjust the waveforms for easy viewing 4 Using the DELAY TIME MULT set the pulse to coincide with one of the vertical graduation lines and record the dial setting at this point 5 Again using the DELAY TIME MULT adjust the second pulse in the sa...

Page 29: ...to the CH1 and CH2 INPUT jacks setting the vertical MODE to DUAL and selecting either ALT or CHOP display 2 Set the SOURCE to the signal that is leading in phase and adjust VOLTS DIV and SWEEP TIME DIV for easy waveform observation Set the SWEEP VARIABLE control to CAL position 3 Set the B TRIG MODE to initiate the AFTER DELAY mode of operation Set the HORIZ MODE to INT and ad just the B SWEEP TIM...

Page 30: ...de with the DELAY TIME ZERO Procedure 1 Apply the signal to INPUT jack and set the vertical MODE to the channel to be used and adjusting the various controls for a normal display 2 Use the A SWEEP TIME DIV and HOLDOFF controls to adjust the display such that a number of cycles of waveform is observed Next set the B TRIG MODE to DELAY 0 3 Set the HORIZ MODE to ALT or B and use the POSI TION and TRA...

Page 31: ...loscope inputs may be reserved 6 Adjust the channel 1 and 2 gain controls for a suitable viewing size 7 Some typical results are shown in Fig 43 If the two signals are in phase the oscilloscope trace is a straight diagonal line If the vertical and horizontal gain are properly adjusted this line is at a 4 5 angle A 90 phase shift produces a circular oscilloscope pattern Phase shift of less or more ...

Page 32: ...s soft vinyl pouch attaches to the top side oscilloscope housing and provides storage space for two probes and the operators manual Install the probe pouch as follow 1 Unsnap the probe pouch from the retainer plate 2 Align the retainer plate with 4 holes on the top side of the case with 4 snaps at the top 3 Attach the 4 corners of the retainer plate to the oscilloscope case with the 4 nylon rivets...

Page 33: ...he blown fuse and in its place insert a new fuse 4 Set the label of your line voltage to the mark then plug the fuse holder containing the new fuse into the rear panel CHANGING THE SUPPLY V O L T A G E Remove the fuse holder in the rear panel using a standard screwdriver Then set the label of your line voltage to the mark and plug the fuse holder back into place When changing the supply setting fr...

Page 34: ...MEMO 3 4 ...

Page 35: ...A product of KENWOOD CORPORATION 17 5 2 chome Shibuya Shibuya ku Tokyo 150 Japan PRINTED IN JAPAN B50 7588 30 T 89 121110987654321 88 12111098 ...

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