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Digital Storage Oscilloscope

Model No. 72-9355, 72-9360 & 72-9365

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Summary of Contents for 640522695713

Page 1: ...1 Digital Storage Oscilloscope Model No 72 9355 72 9360 72 9365 ...

Page 2: ...thed using the mains power cord ground connection Do not disconnect from the mains supply and it s ground connection when any item is connected to this product for measurement Children should be supervised to ensure that they do not play with the product Always disconnect from the mains when the product is not in use or before cleaning Do not use the product for any purpose other than that for whi...

Page 3: ... dial on the front panel The row of 5 keys at the bottom of the display panel are menu operation keys designated as F1 to F5 from left to right With these 5 keys you can set up different options of the current menu The other keys are function keys You can use them to enter different function menus or access particular functions directly Apart from the waveform display zone the display panel also f...

Page 4: ...her menu in Channel A then set probe ratio to 10X with the jog dial Return K return Normal Invert OPERATION AUTOSET WAVEFORM DISPLAY Adjust the variable capacitor on the probe with an insulated screwdriver until a correct waveform is achieved The oscilloscope features an autoset function which automatically adjusts the vertical deflection factor scanning time base and trigger mode based on the inp...

Page 5: ...loscope you can adjust the signal to a size best suited to screen Pressing the key adjusts the position of the reference waveform so you can adjust the position on the screen display Horizontal control Pressing the key to change the horizontal time base range setup Range of horizontal scanning rate is 5ns 50s div 72 9360 in steps of 1 2 5 Pressing the key adjusts the position of the reference wave...

Page 6: ...d Turn the jog dial to make a selection then press the jog dial once to confirm The screen will then enter the next menu If you wish to change the format repeat the above steps Otherwise press the jog dial to close this menu Press F5 to return to a previous selection option and reset that page Input A On Off Channel A on Channel A off Coupling DC AC Ground AC and DC quantities of input signal is a...

Page 7: ...f the signal being tested and input to Channel A will be intercepted Only AC quantities can pass through Press F2 to select ground coupling The channel input is now set to equivalent ground The channel input level appears on screen Note In this mode although waveform is not displayed the input signal remains connected to the channel circuit Setting the channel bandwidth limit Applying a signal to ...

Page 8: ...ress F5 Select Others and select 10X probe ratio with the jog dial as shown Next press the jog dial once to confirm then press the jog dial again to close the menu The screen shows the setup and vertical range display when the probe is set at 10 1 Setting the waveform polarity Inverted waveform This indicates the signal is 180 inverted in relation to the channel ground level The example below show...

Page 9: ...er Mode Auto Normal Single Waveform is acquired even when no trigger condition is detected Acquisition takes place only when trigger condition is met One waveform is acquired when one trigger is detected Acquisition then stops Trigger Coupling AC DC H F Suppression L F Suppression Allow AC and DC quantities of the input signal to pass Intercept DC quantities of the input signal Reject low frequenc...

Page 10: ...type Trigger source A B Alternate Set Channel A as the signal source trigger signal Set Channel B as the signal source trigger signal A and B trigger their individual signals alternately Trigger setup Trigger mode Auto Normal Single Set to acquire waveform only if no trigger is detected Set to acquire waveform only if trigger condition is satisfied Set to acquire one waveform when one trigger is d...

Page 11: ...s when there is no trigger signal When the trigger signal is generated trigger scan occurs Single Trigger In this mode you only have to press the Run button once and the oscilloscope will wait for trigger One sampling will occur and the acquired waveform will be displayed when the oscilloscope detects a trigger Then trigger will stop 3 Trigger coupling Trigger coupling determines which quantities ...

Page 12: ...mised All parameters OFF The screen displays only user defined parameters All 27 parameters are displayed Close the automatic measurement function Customised parameters Parameter 1 Parameter 2 Parameter 3 Up to 3 parameters can be displayed simultaneously on screen No of parameters Total 27 Select with the jog dial Channel A B OFF Display measurement value of Channel A Display measurement value of...

Page 13: ...fresh rate Refresh rate is the number of times the digital storage oscilloscope refreshes the waveform display per second The refreshing speed affects the capability to observe signal movements speedily 3 X Y Mode This mode can be activated only when Channel A and Channel B are both on After selecting the X Y display mode the horizontal axis will display the A signal while the vertical axis will d...

Page 14: ...lue from top to ground GND Base value Vbase The voltage value from base to ground GND Middle value Vmid Half of the amplitude value Peak to peak value Vpp The voltage value from the highest point to lowest point Amplitude value Vamp The voltage value from top to base Overshoot The ratio value of the difference between maximum value and top value to the amplitude value Preshoot The ratio value of t...

Page 15: ...ally Save the waveform document on the USB device Position 1 10 Set and select the storage position with the jog dial Run Run the previously selected operation Return Go back to previous menu Functions Menu Setup Notes Save Setup Reference waveform Recall a saved setup Recall and display a saved waveform Source Internal USB Position 1 10 Set and select the storage position with the jog dial Run Ru...

Page 16: ... press F4 to access the record and save menu Press F2 to activate the USB document option then select 3 with the jog dial Press F4 The waveform is successfully recorded on the USB device when the Saving progress bar disappears Functions Menu Setup Notes Waveform record ON OFF Recall a saved setup Recall and display a saved waveform Playback Screen Single screen Playback Return The number of screen...

Page 17: ... off at the set interval to save battery power if the unit remains idle If DC power adaptor is connected this energy save mode is disabled Language Simplified Chinese Traditional Chinese English Select the interface language Interface design Classic Traditional Modern Set the interface design Help ON OFF Turn the help function on off Auto calibration Cancel OK Cancel auto system calibration Run au...

Page 18: ... div of the current horizontal axis Vertical range 5mV 50V Display the current FFT range and adjust with the jog dial Shift You can shift the math waveform with the jog dial Press MATH then F1 select FFT as the math type FFT spectrum analysis By using the FFT Fast Fourier Transform algorithm you can convert time domain signals YT into frequency domain signals With FFT you can conveniently observe ...

Page 19: ...t means the quotient of the sampling and math points When math point value is fixed the sampling rate should be as low as possible Nyquist frequency To rebuild the original waveform at least 2f sampling rate should be used for waveform with a maximum frequency of f This is known as Nyquist stability criterion where f is the Nyquist frequency and 2f is the Nyquist sampling rate Window Extension Win...

Page 20: ...lied to B it will be set to B Trigger slew rate Rising Trigger type Auto Multimeter Measurement Operation instructions Open the multimeter function menu by pressing METER Functions Menu Setup Notes Type DC voltage AC voltage Resistance ON OFF Diode Capacitance DC current AC current Select the DC voltage measurement mode Select the AC voltage measurement mode Select the resistance measurement mode ...

Page 21: ...tery is out Check the power cable connection Restart the unit after performing the above checks If the unit still fails to power on contact UNI T to request service 2 If no waveform is displayed after you have acquired a signal follow the steps below to find the cause Check whether the probe is properly connected to the signal lead Check whether the signal lead is properly connected to the BNC cha...

Page 22: ...the unit go to the system information sub menu under the user menu The software upgrade pack that corresponds with the model and hardware version of the oscilloscope requiring upgrade is available online from our website or from our marketing department The software version should be higher than the one currently installed Prepare a USB device disk format FAT After decompressing the program upgrad...

Page 23: ... div 50s div 200MHz 5ns div 50s div 100MHz 60MHz Accuracy of sampling rate and delay time 50ppm any time interval 1ms Time interval rT measurement accuracy full bandwidth Single 1 sampling time interval 50ppm X reading 0 6ns 16 average values 1 sampling time interval 50ppm x reading 0 4ns Vertical Model 72 9365 72 9360 72 9355 Analogue bandwidth 200MHz 100MHz 60MHz Single bandwidth 200MHz 100MHz 6...

Page 24: ... waveform after the average of 16 waveforms acquired waveforms is taken 3 x reading 0 05 div Trigger Trigger sensitivity 1 div Trigger level range 5 div from the centre of the screen Trigger level accuracy Typical applied on signals of 20ns rise or fall time 0 3 div x V div within 4 div from the centre of the screen Pre trigger capability Normal mode scanning mode pre trigger delayed trigger Pre t...

Page 25: ...issajous figure Phase difference 3 degrees Display Display type 145mm 5 7 diagonal liquid crystal Display resolution 320 horizontal by 240 vertical pixels Waveform display zone Lateral 12 div 25 dot div Longitudinal 8 div 25 dot div Display Adjustable Backlit intensity Typical 300nit Display languages Simplified Chinese Traditional Chinese English Interface Functions Standard setup 1xUSB Host Opti...

Page 26: ...dically wipe the case with damp cloth and mild detergent Do not use abrasives or solvents for cleaning Disconnect from the mains first Clean the measurement probe tips occasionally as dirt on the probes can affect reading accuracy Take care to avoid scratching the glass display when cleaning the LCD Do not leave the oscilloscope where the LCD screen will be exposed to strong direct sunlight for lo...

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Page 28: ...ife it must be treated as Waste Electrical Electronic Equipment WEEE Any WEEE marked products must not be mixed with general household waste but kept separate for the treatment recovery and recycling of the materials used Contact your local authority for details of recycling schemes in your area Made in China PR2 9PP Man Rev 1 0 ...

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