Kenwood CS-8010 Instruction Manual

ample. Fig. 8 shows that the sweep circuit is drivenby the gate signal when the gate signal in the burstsignal is applied to the EXT. TRIG INPUT jack.Shows the input/output signals, where the burstsignal generated from the signal is applied to the in-strument under test. Thus, accurate triggering canbe achieved without regard to the input signal fed tothe INPUT (6) or @ jack so that no further trigger-ing is required even when the input signal is varied.Output signal fromamplifier, etc.NOTE: Since the EXT input is DC-coupled, if a DCvoltage of more than 1.5 V is superimposed,sync will not be engaged. In this case, con-nect a capacitor of about 0.047/iF in seriesand use AC coupling.(2) After the SOURCE has been set, the trigger pointcan be set by rotating LEVEL/SLOPE control(3) Setting of coupling switchAC:The trigger signal is capacitively coupled, so its DCcomponent is cut, giving a stable trigger which isnot affected by the DC component. With this ad-vantage, this position of the coupling switch is con-veniently selected for ordinary applications.However, if the trigger signal is lower than 10 Hz,the trigger signal level becomes attenuated,resulting in difficulty in triggering.HF R E J :The trigger signal is supplied through a low-passfilter to eliminate the high-frequency component(higher than 10 kHz), giving a stable triggering withlow-frequency component. When high-frequencynoise is superimposed over the trigger signal asshown in Fig. 9, the high-frequency noise is cut toprovide a stable trigger.W a v e f o r m w i t h high frequency noiseTrigger signal by H F rejection• Triggering LevelTrigger point on waveform is adjusted by theLEVEL/PULL SLOPE ® control. Shows the rela-tionship between the SLOPE and LEVEL of the trig-ger point. Triggering level can be adjusted asnecessary.S L O P E " - " R A N G ES L O P E " + " R A N G EL E V E L* Auto TriggerWhen the TRIG MODE @ selection is in AUTO, thesweep circuit becomes free-running as long as thereis no trigger signal, permitting a check of GND level.When a trigger signal is present, the trigger pointcan be determined by the LEVEL control for obser-vation as in the normal trigger signal. When the trig-ger level exceeds the limit, the trigger circuitbecomes free-running where the waveform startsrunning.NOTE: If, with the TRIG MODE switch set toNORM, no trigger signal is input or the trig-ger signal exceeds the triggering range,sweeping is stopped and trace will not bedisplayed.5. Adjust the SWEEP TIME/DIV control @ to obtain anappropriate display. Now a normal sweep display is ob-tained.(2) Sweep magnification operationSince merely shortening the sweep time to magnify a por-tion of an observed waveform can result in the desired por-tion disappearing off the screen, such magnified displayshould be performed if the sweep magnification feature isused (refer to "Sweep Magnification" or page 4.).Using the < • POSITION control, adjust the desired por-tion of waveform to the CRT. Pull out the PULLx 10 MAGcontrol to magnify the display 10 times. For this type ofdisplay the sweep time is the SWEEP TIME/DIV settingdivided by 10.(3) X-Y operationX-Y operation permits the oscilloscope to perform manymeasurements not possible with conventional sweepoperation.Set the TRIGGER MODE switch to the X-Y position. Inthis mode, channel 1 becomes the Y axis input and channel2 becomes the X axis input.The X and Y positions are now adjusted using the < •POSITION @ and CH1 r POSITION controls respectively.X and Y sensitivity are set by using the channel 2 and chan-nel 1 VARIABLE VOLTS/DIV controls respectively.Fig. 9E X T . T R I GTrigger signal(Gate signal)Input signai toamplifier, etc.Fig. 8Fig. 1016