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USER MANUAL

Oscilloscope

Dual Trace Oscilloscope

Members Of The Family

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Summary of Contents for 5620NF

Page 1: ...USER MANUAL Oscilloscope Dual Trace Oscilloscope Members Of The Family ⅰ ...

Page 2: ...weep Magnification 21 4 9 X Y Operation 22 4 10 Calibration of Probe 23 5 CURSOR READOUT OPERATION 24 5 1 Read Out Panel 24 5 2 Cursor measurement 25 6 MAINTENANCE 30 6 1 Fuse replacement 30 6 2 Cleaning 30 7 BLOCK DIAGRAM 31 Introduction of Rear Pane1 PAGE ⅱ SAFETY TERMS AND SYMBOLS These terms may appear in this manual or on the product Warning statements identify condition or practices that cou...

Page 3: ...scilloscope CHl can be applied as horizontal deflection X axis while CH2 provide vertical deflection Y axis ty BF 5620NF 620R 640B 650B 640BF 650BF 640R 650R 620B 620 1 2 2 TECHNICAL SPECIFICATIONS 20MHz OSCILLOSCOPE 40MHz 50MHz OSCILLOSCOPE 620B 5620NF 620BF 620R 640B 650B 640BF 650BF 640R 650R 5mV 20V DIV 12steps in 1 2 5sequence 5620NF 5mV 5V DIV 10steps in 1 2 5sequence 3 x5MAG 5 5620NF Devoid...

Page 4: ...z 3 at DC 50KHz CH1 CH2 LINE EXT CHl and CH2 can be selected only when the vertical mode is DUAL or ADD In ALT mode if the TRIG ALT switch is pushed in it can be use for alternate tiggering of two different source 2 20MHz 1 5DIV 20 40MHz2 5DIV 40 50MHz 3DIV 10 C 35 C Triggering source Coupling Slope Sensitivity Triggering modes EXT triggering signal input Input impedance Max input voltage Sweep ti...

Page 5: ...e AUTO NORM TV V TV H Others probe x1 x10 X Y V 1 T T 6 3 PRECAUTIONS BEFORE OPERATING THE OSCILLOSCOPE 3 1 Unpacking the Oscilloscope 3 2 Checking the Line voltage The oscilloscope is shipped from the factory atter being ful1y inspected and tested Upon receiving the instrument immediately unpack and inspect it for any damages that might have been sustained during transportation If any sign of dam...

Page 6: ...p 140Vrms at sine wave If an AC voltage which is superimposed on a DC voltage is applied the maximum peak value of CH l and CH 2 input voltages must not exceed or 300V So for AC voltages with a mean value of zero volt the maximum peak to peak value is 600V To avoid instrument damage do not exceed maximum input voltages Maximum input voltages must have frequencies less than 1 KH z CAUTION Input ter...

Page 7: ...K Hz 45 uS 30 0V Ⅱ CAT M AX 40 0Vp k 300V Ⅱ CAT MA X 400V pk 3 00V CATⅡ M A X 4 00V pk PULLx5MAG PU LLx5MA G VO LTS DIV VOLTS DIV 20 50 10 5 20 1 0 5 2 1 5 2 1 mV V 20 50 10 5 20 10 5 2 1 5 2 1 mV V 10 Figure 4 3 620R 640R 650R Rear Panel WARNING TO AVOID ELECTRIC SHOCK THE POWER CORD PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND FOR CONTINUED FIRE PROTECTION REPLACE ONLY WITH SPECIFI...

Page 8: ...cated value When in the CAL position sensitivity is calibrated to indicated value POSITION 11 19 Vertical positioning control of trace or spot When this knobis pulled out x5 MAG state the amplifier sensitivity is multiplied by 5 VERTMODE 14 Select operation modes of CHl and CH2 amplifiers CH1 The oscilloscope operates as a single channel instrument with CH1 alone CH2 The oscilloscope operates as a...

Page 9: ...d on the display waveform 14 LOCK 22 TIME DI click 28 by fu11y clockwise positien then triggring level is automatically maintained at optimum value irrespective Of the signal amplitude requiring no manual adjustment of triggering level TRIGGER MODE 25 Select the desired trigger mode AUTO When no triggering signal is applied or when triggering signal frequency is less than 25Hz sweep runs in the fr...

Page 10: ...re that the working voltage of the instrument is correct correspond to the AC line voltage Set the switches and controls of the intrument as shown below Item No Setting INTEN 2 Mid position FOCUS 3 Mid position VERT MODE 14 Chl ALT CHOP 12 Released ALT CH 2 INV 16 Released POSITION 11 19 Mid position VOLTS DIV 8 21 0 5V DIV VARIABLE 13 17 CAL clockwise position AC GND DC 10 18 GND SOURCE 23 CHl Af...

Page 11: ...ODE the input signals applied to CH 1and CH 2 are switched at about 250kHz independent of the sweep and at the same time appear on the screen This setting is used when the sweep time is long in 2 channel observation When in the dual channel operation DUAL or ADD mode the CH l or CH 2 signal must be selected for the triggering source signal by means of the SOURCE switch If both CH l and CH 2 signal...

Page 12: ...na1 Figure 4 6 20 Line The AC power line frequency signal is used as the triggering signal This method is effective when the measured signal has a relationship with the AC line frequency especially for measurements of low level AC noise of audio equipment thyristor circuits etc EXT The sweep is triggered with an external signal applied to the external trigger input terminal An external signal whic...

Page 13: ...nter of screen as the center of expansion The sweep time during the magnification operation is as follows Value indicated by TIME DIV switchk1 10 Thus the unmagnified maximum sweep speed lu sec DIV can be increased wi th the magnification as follows lusec DIV x1 10 100nsec DIV 4 7 TIME DIV Control 4 8 Sweep Magniftcation 10x magnification Any part can be covered by means of POSITION control Figure...

Page 14: ...ush tuning button has two functions tuning and pushbutton Push the PUSH TRACK button to select measurement cursor The selected cursor will has a accompany with it Tuning the knob to place the cursor to where you Want Horizontal vertical While in P t V mode Pushing pushbutton to change moving direction Tuning the knob to place the cursor 31 FUNCTION Function select button While in READOUT ON and P ...

Page 15: ...dash bar b Tuning PUSH TRACK knob place the cursor 1 marked by to the start point of waveform that you want to measure c Push PUSH TRACK pushbutton to select cursor 2 cursor 2 marked by this time d Tuning PUSH TRACK knob place cursor 2 to the end point of waveform read the T value displayed on CRT NOTE If the SWEEPVARY is unlocked TIME div is un calibrated it will display a before value of TIME di...

Page 16: ...ss FUNCTION pushbutton quit the menu NOTE When READOUT is OFF only have VOLTS div of CH 1 CH 2 and AC GND DC is displayed All other information is turn off 5 2 2 Menu Use Fig 5 6 5 2 2 1 Set the probe attenuation rate 5 2 2 2 READOUT ON OFF Fig 5 6 27 Fig 5 5 V1 8 000V CH 1 AUTO AC 2V 5ms Cursor 1 Cursor 2 CH2x1 10 CH1x1 10 P t V ON OFF READOUT ON OFF QUIT MENU FUNCTION SELECT f 5 2 3 P t v measur...

Page 17: ... Vertical adjusting 46 H VAR Horizontal adjusting Adjust above two potentiometers move the readout characters to the screen center These two potentiometer located on the CRT readout board frequency 2OHz 40MHz 640BF 650BF 640R 650R 30 6 MAINTENANCE The following instructions are for use by qualified personnel only To avoid electrical shock do not perform any servicing other than in the operating in...

Page 18: ...2 ATT CH 2 PREAMP SWITCHING LOGIC Z AXIS AMP CRT CIRCUIT H V SUPPLY Z AXIS INPUT CH 2 TRIG PICKUPAMP TRIG SWITCH X AXIS SIGNAL CH 1 CH 2 EXT LINE TRIGGER GENERATOR TRIGGER INPUT AMP LINE TRIG AUTO CIRCUIT A SWEEP GENERATOR FREE RUN SIGNAL HORIZONTAL SWITCHING HORIZONTAL OUTPUTAMP POWER SUPPLY TO EACH BLOCK CALIBRATOR SQUARE WAVE AC LINE VERT SIGNAL Specifications are subject to change without noti...

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