OSCILLOSCOPE INSTRUCTION MANUAL For Series Models: 20MHz Oscilloscope 25MHz Oscilloscope 40MHz Oscilloscope 5 0MHz Oscilloscope 60MHz Oscilloscope 100MHz Oscilloscope
Table Of Contents: Test Instrument Safety General Description Features 20MHz Specifications 25MHz Specifications 40MHz Specifications 50MHz Specifications 60MHz Specifications 100MHz Specifications Notice Before Operation Controls and Indicators Operating Instructions Safety precautions Equipment protection precautions Operating tips Initial starting procedure Single trace display Dual trace display Triggering Time base control X-Y Operation Component test Application DC Voltage measurements Measurement of
Test Instru ment Safety OSCILLOSCOPE INSTRUCTION MANUAL WARNIN G Normal use of test equipment exposes you to a certain amount of danger from electrical shock because testing must often be performed where exposed high voltage is present. An electrical shock causing 10 milliamps of current to pass through the heart will stop most human heartbeats. Voltage as low as 35 volts DC or AC rms should be considered dangerous and hazardous since it can produce a lethal current under certain conditions.
TEST INSTRUMENT SAFETY 7. Some equipment with a two-wire ac power cord, including some with polarized power plugs, is the "hot chassis" type. This includes most recent television receivers and audio equipment. A plastic or wooden cabinet insulates the chassis to protect the customer. When the cabinet is removed for servicing, a serious shock hazard exists if the chassis is touched.
General OSCILLOSCOPE INSTRUCTION MANUAL DESCRIPTION The model PS-XX0/XX1/XX5 oscilloscope is a dual-channel oscilloscope with frequency bandwidth 20~100 MHz at -3dB; maximum sweep 10 nS/DIV; maximum sensitivity 1 mV/DIV and 150 mm rectangular CRT with internal graticule. The oscilloscope is rugged, easy to operate and highly reliable.
GENERAL (9) Z Modulation (PS-XX5 only) Input terminal is used for external intensity modulation signal. (10) Component Test (PS-XX1/XX5) Capacitor, indicator, diode, transistor and zener can be also viewed on screen. (11) Beam Finder (PS-XX1/XX5) Trace can be returned to CRT viewing area regardless of setting horizontal, vertical or intensity controls when press beam finder button. (12) Illumination Control (PS-xx1/xx5) Graticule illumination can be adjusted according to brightness of circumstance.
OSCILLOSCOPE INSTRUCTION MANUAL 20MHz Specifications CATHODE RAY TUBE 6 inch diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV=1cm), P31 phosphor, 2kV accel voltage. VERTICAL DEFLECTION Bandwidth: DC~20 MHz(-3dB) Sensitivity: 1mV/DIV~1V/DIV(5MHz, -3dB), x5 gain selected. 5mV/DIV~5V/DIV Attenuator: 1-2-5 sequence, 10 step with variable control. Input Impedance : 1MΩ ±2%, 25pF±10% Max. Input Voltage : 400V (DC+AC peak) Rise Time : About 17.
20MHZ SPECIFICATIONS MAIN TIME BASE Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Variable time Control: 5:1, un-calibrated, continuously variable between steps. Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. DELAY TIME BASE( XX5 only) Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. Delay Time Position: Variable control to locate desirable waveform for extending.
20MHZ SPECIFICATIONS COMPONENT TEST(XX1, XX5 only) Test Voltage: Max. 8.6Vrms (open circuit) Test Current: Max. 11mA (shorted) Test Frequency: Line Frequency. Components: Capacitor, Inductor, Diode, Transistor, Zener etc. CH2 OUTPUT(XX5 only) Output Level: 100mV / DIV(no load); 50mV / DIV(with 50Ω load).
OSCILLOSCOPE INSTRUCTION MANUAL 25MHz Specifications CATHODE RAY TUBE 6 inch diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV=1cm), P31 phosphor , 2kV accel voltage. VERTICAL DEFLECTION Bandwidth: DC~25 MHz(-3dB) Sensitivity: 1mV/DIV~1V/DIV(10MHz, -3dB), x5 gain selected. 5mV/DIV~5V/DIV Attenuator: 1-2-5 sequence, 10 step with variable control. Input Impedance : 1MΩ ±2%, 25pF±10% Max.
25MHZ SPECIFICATIONS MAIN TIME BASE Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Variable time Control: 5:1, un-calibrated, continuously variable between steps. Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. DELAY TIME BASE( XX5 only) Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. Delay Time Position: Variable control to locate desirable waveform for extending.
25MHZ SPECIFICATIONS COMPONENT TEST(XX1,XX5 only) Test Voltage: Max. 8.6Vrms (open circuit) Test Current: Max. 11mA (shorted) Test Frequency: Line Frequency. Components: Capacitor, Inductor, Diode, Transistor, Zener etc. CH2 OUTPUT(XX0, XX5 only) Output Level: 100mV / DIV(no load); 50mV / DIV(with 50Ω load).
OSCILLOSCOPE INSTRUCTION MANUAL 40MHz Specifications CATHODE RAY TUBE 6 inch diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV=1cm), P31 phosphor. VERTICAL DEFLECTION Bandwidth: DC~40 MHz(-3dB) Sensitivity: 1mV/DIV~1V/DIV(10MHz, -3dB), x5 gain selected. 5mV/DIV~5V/DIV Attenuator: 1-2-5 sequence, 10 step with variable control. Input Impedance : 1MΩ ±2%, 25pF±10% Max. Input Voltage : 400V (DC+AC peak) Rise Time : About 8.
40MHZ SPECIFICATIONS MAIN TIME BASE Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Variable time Control: 5:1, un-calibrated, continuously variable between steps. Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. DELAY TIME BASE( XX5 only) Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. Delay Time Position: Variable control to locate desirable waveform for extending.
40MHZ SPECIFICATIONS COMPONENT TEST( XX1, XX5 only) Test Voltage: Max. 8.6Vrms (open circuit) Test Current: Max. 11mA (shorted) Test Frequency: Line Frequency. Components: Capacitor, Inductor, Diode, Transistor, Zener etc. CH2 OUTPUT(XX5 only) Output Level: 100mV / DIV(no load); 50mV / DIV(with 50Ω load).
OSCILLOSCOPE INSTRUCTION MANUAL 50MHz Specifications CATHODE RAY TUBE 6 inch diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV=1cm), P31 phosphor. VERTICAL DEFLECTION Bandwidth: DC~50 MHz(-3dB) Sensitivity: 1mV/DIV~1V/DIV(10MHz, -3dB), x5 gain selected. 5mV/DIV~5V/DIV Attenuator: 1-2-5 sequence, 10 step with variable control. Input Impedance : 1MΩ ±2%, 25pF±10% Max. Input Voltage : 400V (DC+AC peak) Rise Time : About 7.
50MHZ SPECIFICATIONS MAIN TIME BASE Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Variable time Control: 5:1, un-calibrated, continuously variable between steps. Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. DELAY TIME BASE( XX5 only) Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. Delay Time Position: Variable control to locate desirable waveform for extending.
50MHZ SPECIFICATIONS COMPONENT TEST( XX1, XX5 only) Test Voltage: Max. 8.6Vrms (open circuit) Test Current: Max. 11mA (shorted) Test Frequency: Line Frequency. Components: Capacitor, Inductor, Diode, Transistor, Zener etc. CH2 OUTPUT(XX5 only) Output Level: 100mV / DIV(no load); 50mV / DIV(with 50Ω load).
60MHZ SPECIFICATIONS 60MHz Specifications CATHODE RAY TUBE 6 inch diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV=1cm), P31 phosphor, 12kV accel voltage. VERTICAL DEFLECTION Bandwidth: DC~60 MHz(-3dB) Sensitivity: 1mV/DIV~1V/DIV(10MHz, -3dB), x5 gain selected. 5mV/DIV~5V/DIV Attenuator: 1-2-5 sequence, 10 step with variable control. Input Impedance : 1MΩ ±2%, 25pF±10% Max. Input Voltage : 400V (DC+AC peak) Rise Time : About 5.
60MHZ SPECIFICATIONS MAIN TIME BASE Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Variable time Control: 5:1, un-calibrated, continuously variable between steps. Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. DELAY TIME BASE( XX5 only) Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. Delay Time Position: Variable control to locate desirable waveform for extending.
60MHZ SPECIFICATIONS COMPONENT TEST( XX1, XX5 only) Test Voltage: Max. 8.6Vrms (open circuit) Test Current: Max. 11mA (shorted) Test Frequency: Line Frequency. Components: Capacitor, Inductor, Diode, Transistor, Zener etc. CH2 OUTPUT(XX5 only) Output Level: 100mV / DIV(no load); 50mV / DIV(with 50Ω load).
100MHz Specifications OSCILLOSCOPE INSTRUCTION MANUAL CATHODE RAY TUBE 6 inch diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV=1cm), P31 phosphor, 14kV accel voltage. VERTICAL DEFLECTION Bandwidth: DC~100 MHz(-3dB) Sensitivity: 1mV/DIV~1V/DIV(20MHz, -3dB), x5 gain selected. 5mV/DIV~5V/DIV Attenuator: 1-2-5 sequence, 10 step with variable control. Input Impedance : 1MΩ ±2%, 25pF±10% Max. Input Voltage : 400V (DC+AC peak) Rise Time : ≦ 3.
100MHZ SPECIFICATIONS MAIN TIME BASE Sweep Speed: 0.1μS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Variable time Control: 5:1, un-calibrated, continuously variable between steps. Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. DELAY TIME BASE( XX5 only) Sweep Speed: 20nS/DIV~2.0S/DIV in 1-2-5 sequence, 23 steps. Accuracy: ±3% Sweep Magnification: X10, ±10%, extend sweep speed up to 10nS /DIV. Delay Time Position: Variable control to locate desirable waveform for extending.
100MHZ SPECIFICATIONS COMPONENT TEST( XX1, XX5 only) Test Voltage: Max. 8.6Vrms (open circuit) Test Current: Max. 11mA (shorted) Test Frequency: Line Frequency. Components: Capacitor, Inductor, Diode, Transistor, Zener etc. CH2 OUTPUT(XX5 only) Output Level: 100mV / DIV(no load); 50mV / DIV(with 50Ω load).
! Notic e Before Operatio n OSCILLOSCOPE INSTRUCTION MANUAL 1. Unpack the oscilloscope: After receipt of the instrument, immediately unpack and inspect it for any shipping damage or missing accessories. If any sign of damage or missing accessories are found, immediately notify the dealer. 2. Environmental: The instrument is designed for "Indoor Use" only.
OSCILLOSCOPE INSTRUCTION MANUAL 4. Suggestions for successful instrument operation: Never place heavy objects on the instrument. Never place a hot soldering iron on or near the instrument. Never insert wires, pins, or other metal objects into the ventilation fan. Never move or pull the instrument with the power cord or a probe cord. Never move instrument when the power cord or a signal probe is connected to a circuit.
1 32 2 4 5 31 30 29 28 8 7 9 27 26 25 24 11 10 13 23 22 21 20~60MHz Standard Type Front Panel 14 19 16 15 18 Controls and Indicators 25 OSCILLOSCOPE INSTRUCTION MANUAL
1 32 2 4 3 5 31 30 29 28 6 7 8 23 22 21 20 9 10 12 11 13 27 26 25 24 20~60MHz Delay Type Front Panel 14 19 15 16 18 17 CONTROLS AND INDICATORS 26
1 32 2 4 5 31 30 29 28 8 33 7 9 27 26 25 24 100MHz Standard Type Front Panel 11 10 13 23 22 21 14 19 16 15 18 CONTROLS AND INDICATORS 27
1 32 2 4 5 31 30 29 28 8 33 7 9 27 26 25 24 100MHz Delay Type Front Panel 11 10 13 23 22 21 14 19 15 16 18 17 CONTROLS AND INDICATORS 28
40 35 36 37 Standard Type Rea r Panel CONTROLS AND INDICATORS 29
40 35 39 36 Dela y Type Rea r Panel 37 38 CONTROLS AND INDICATORS 30
CONTROLS AND INDICATORS 1. Symbol Indicators: Power OFF Earth Ground 0 1 ! Power ON VR With Switch Vertical Up Conforms to IEC 1010. EN 61010 Vertical Down Horizontal Left Warning! Risk of Danger Complies With U.S. & Canadian Standard C .. In Spected & Incensed by TUV Product Servies Horizontal Right 2. Operating Controls, Indicators and Signal input connectors: (P.25~30) GENERAL FUNCTION CONTROLS ON Indicator(32): Lights when oscilloscope is “on”.
CONTROLS AND INDICATORS CAL Terminal(9): Terminal provides 2V p-p, 1 KHz(nominal) square wave signal. This signal is useful for checking probe compensation adjustment, as well as providing a rough check of vertical calibration. BEAN FIND Pushbutton(12): Momentary-contact pushbutton speeds setup of trace position by bringing the beam into graticule area; operates independently of other display controls. VERTICAL CONTROLS VERTICAL Mode Switch(7) Selects vertical display mode.
CONTROLS AND INDICATORS CH 1 (X) VOLTS/DIV Control(4): Vertical attenuator for channel 1. Provides step adjustment of vertical sensitivity. When channel 1 VARIABLE control is set to CAL, vertical sensitivity is calibrated in 10 steps from 5 mV/DIV TO 5 V/DIV in a 1-2-5 sequence. When the X-Y mode of operation is selected, this control provides step adjustment of X-axis sensitivity. CH 1 VARIABLE/PULL X5 MAG Control(5): VARIABLE: Rotation provides vernier adjustment of channel 1 vertical sensitivity.
CONTROLS AND INDICATORS PULL X5 MAG: When pulled out, increases vertical sensitivity by a factor of five. Effectively provides two extra sensitivity settings: 2 mV/DIV and 1 mV/DIV. In X-Y mode, increases Y-sensitivity by a factor of five. CH 2 (Y) Input Jack(13): Vertical input for channel 2. Y-axis input for X-Y operation. CH 2 AC-GND-DC Switch(14): Three-position lever switch with the following positions: AC: Channel 2 input signal is capacitively coupled; dc component is blocked.
CONTROLS AND INDICATORS MIX: The main and delayed sweep share a single trace; main sweep occupies the left portion of the display; delayed sweep occupies the right portion of the display. The DELAY TIME POSITION control determines the percentage of display that is main sweep and the percentage of display that is delayed sweep (main sweep is usually brighter than the delayed sweep). Delayed sweep speed cannot be slower than main sweep speed.
CONTROLS AND INDICATORS EXT: Signal from EXTERNAL TRIGGER jack becomes sweep trigger. Trigger COUPLING Switch(24): Selects trigger coupling. Four-position level switch with the following positions: AC: Trigger signal is capacitively coupled. TV-V: Used for triggering from television vertical sync pulses. Also serves as lopass/dc (high frequency reject) trigger coupling. TV-H: Used for triggering from television horizontal sync pulses. Also serves as hi-pass (low frequency reject) trigger coupling.
Operating Instru ctions OSCILLOSCOPE INSTRUCTION MANUAL SAFETY PRECAUTIONS WARNIN G! The following precautions must be observed to help prevent electric shock: 1. When he oscilloscope is used to make measurements in equipment that contains high voltage, there is always a certain amount of danger from electrical shock. The person using the oscilloscope in such conditions should be a qualified electronics technician or otherwise trained and qualified to work in such circumstances.
OPERATING INSTRUCTIONS 2. Do not obstruct the ventilating holes in the case, as this will increase the scope's internal temperature. 3. Excessive voltage applied to the input jacks may damage the oscilloscope. The maximum ratings of the inputs are as follows: Input Terminal Maximum Allowable Input Voltage CH1, CH2 Input 400 Vpeak (DC+AC peak) EXT TRIG Input 300 Vpeak (DC+AC peak) Probe Input (x10) 600 Vpeak (DC+AC peak) Z-Modulation Input 30 Vpeak (DC+AC peak) 4.
OPERATING INSTRUCTIONS OPERATING TIPS The following recommendations will help obtain the best performance from the oscilloscope. 1. Always use the probe ground clips for best results, attached to a circuit ground point near the point of measurement. Do not rely solely on an external ground wire in lieu of the probe ground clips as undesired signals may be introduced. 2. Avoid the following operations: (1)Direct sunlight. (2)High temperature and humidity. (3)Mechanical vibration.
OPERATING INSTRUCTIONS All POSITION controls and INTENSITY control centered(pointers facing up). Main Time Base CONTROL TO 1 mS/DIV. Sweep Mode switch to MAIN. 2. Press the red POWER pushbutton. 3. A trace should appear on the CRT. Adjust the trace brightness with the INTENSITY control, and the trace sharpness with the FOCUS control. 4. Use the BEAM Finder pushbutton to locate a trace that has been moved off the screen by the POSITION controls.
OPERATING INSTRUCTIONS 1. Connect probes to both the CH 1(X) and CH 2(Y) input jacks. 2. Connect the ground clips of the probes to the chassis or common of the equipment under test. Connect the tips of the probed to the two points in the circuit where waveforms are to be measured. 3. To view both waveforms simultaneously, set the VERTICAL MODE switch to DUAL and select either ALT (alternate) or CHOP with the PULL CHOP switch. 4.
OPERATING INSTRUCTIONS TRIGGERING The oscilloscope provides versatility in sync triggering for ability to obtain a stable, jitter-free display in single-trace, or dual-trace operation. The proper settings depend upon the type of waveforms being observed and the type of measurement desired. An explanation is given to help you select the proper setting over a wide range of conditions. AUTO or NORM Triggering 1. In the AUTO triggering mode.
OPERATING INSTRUCTIONS Trigger SOURCE Switch The trigger SOURCE switch (CH 1, CH 2, etc.) selects the signal to be used as the sync trigger. 1. If the SOURCE switch is set to CH 1 (CH 2) the channel 1 (or channel 2) signal becomes the trigger source regardless of the VERTICAL MODE selection. CH 1, or CH2 are often used as the trigger source for phase or timing comparison measurements. 2. By setting the SOURCE switch to ALT, alternation triggering mode is activated.
OPERATING INSTRUCTIONS HOLD OFF Control Controls hold-off time between sweep signals to obtain stable display when triggering a periodic signal. The control hold time ranges from 1 to 5 times time base. A complex waveform (Digital signal) Cycle Heavy parts are display (A) Sweep Waveform (B) Adjusting the HOLD OFF time Fig.3 Refer to Fig.3(A): shows a case for HOLD OFF knob at the NORM position. Various different waveforms are overlapped on the screen, making the signal observation unsuccessful.
OPERATING INSTRUCTIONS 2. Sweep Magnification When a certain position of the displayed waveform is needed to be expanded time wise, a faster sweep speed may be used. However, if the required portion is far from the starting point of the sweep, the required portion may run off the CRT screen. In such a case, pull out (set in the x10 MAG state) the POSITION switch KNOB. When this is done, the displayed waveform is expanded by 10 times to right or left with the center of screen at the center of expansion.
OPERATING INSTRUCTIONS The portion of A is main sweep which is set by the MAIN TIMEBASE. The portion of B is delay sweep witch is set by the DELAY TIME BASE. The mixed point C is continuously variable by means of the DELAY TIME POSITION switch. When turn the switch to DELAY position. A portion of Fig.5 disappears, the mixed point C replaces the position of starting point and B portion of Fig 5 display only the screen. NOTE: DELAY TIMEBASE must be faster than MAIN TIMEBASE and not exceed 10 times.
OPERATING INSTRUCTIONS WAVEFORM CHART Fig.6 0Ω(short) 1 μF ceramic capacitor 100 μF electrolytic capacitor RED B C BLK E 500Ω resistor 1 μF electrolytic capacitor Silicon diode RED B C BLK E 1000 Ω 47 10KΩ resistor 10 μF electrolytic capacitor 4.
Application OSCILLOSCOPE INSTRUCTION MANUAL DC VOLTAGE MEASUREMENTS (Refer to Fig.7) The following technique may be used to measure the instantaneous de level at any portion of a waveform, or to measure a dc voltage where no waveform is present. 1. Connect the signal to be measured to the input jack and set the CH 1/ CH 2 switch to the channel to be used. Set the COLTS/DIV and sweep TIME/DIV controls to obtain a normal display of the waveform to be measured. The VARIABLE control must be set to CAL. 2.
APPLICATION Adjust to the center vertical scale with POSITION 100 Measuring point adjusted to the center vertical scale by position 100 90 Vertical distance between two points 90 Vertical distance Points to be measured 10 10 0 0 Ground potential adjusted by POSITION (reference line) Fig.7 DC Voltage Measurement Adjust to the horizontal scale with POSITION Fig.8 Voltage Measurement MEASUREMENT OF VOLTAGE BETWEEN TWO POINT ON A WAVEFORM (Refer to Fig.
APPLICATION Fir the example shown in Fig.8, the two points are separated by 4.4 divisions vertically. If the VOLTS/DIV setting is 20 mV and a 10:1 probe is used, the voltage is calculated as follows: Voltage = 4.4 (div) x 20 (mV/DIV) x 10 = 880 mV TIME MEASUREMENTS (Refer to Fig.9) This is the procedure for Making time (period) measurements between two points on a waveform. The two point may be the beginning and ending of one complete cycle if desired. 1.
APPLICATION For the example shown in Fig.9, the horizontal distance between the two points is 5.4 divisions. If the TIME/DIV is 0.2 ms and X10 magnification is not used, the time period is calculated as follows: Time = 5.4 (div) x 0.2 (ms/div) = 1.08 ms FREQUENCY MEASUREMENTS Method No.1 (Refer to Fig.10) Frequency measurements are made by measuring the time period of one cycle of waveform and calculating the frequency, witch equals the reciprocal of the time period. 1.
APPLICATION Method No.2 (Refer to Fig.11) While the previously described method relies upon direct period measurement of one cycle, the frequency may also be measured by counting the number of cycles present in a given time period. 1. Set the oscilloscope to display several cycles of the waveform. The VAR SWEEP control must be set to CAL. 2. Count the number of cycles of waveform between a chosen set of vertical graduation lines. 3.
APPLICATION PULSE WIDTH MEASUREMENTS (Refer to Fig.12) 1. Apply the pulse signal to the input jack and set the CH 1/CH 2 switch to the channel to be used. 2. Use the VOLTS/DIV and VARIABLE controls to adjust the display so the waveform is easily observed. Use the POSITION control to position the pulse over the center horizontal graduation. 3. Measure the distance between the leading edge and trailing edge of the pulse (along the center horizontal graduation line).
APPLICATION PULSE RISE TIME AND FALL TIME MEASUREMENTS (Refer to Fig.13) For rise time and fall time measurements, the 10% and 90% amplitude point are used as starting and ending reference points. 1. Apply a signal to the input jack and set the CH 1/CH 2 switch to the channel to be used. Use the VOLTS/DIV and VARIABLE controls to adjust the waveform peak to peak height to six divisions. 2. Using the Y POSITION control, adjust the display so that the waveform is centered vertically on the display.
APPLICATION TIME DIFFERENCE MEASUREMENT (Refer to Fig.14) This procedure is useful in measurement of time difference between signals that are synchronized to one another but skewed in time. 1. Apply the two signals to the CH1 and CH 2 input jacks and select the dual-trace display mode (either the CHOP or ALT mode). CHOP is usually chosen for low frequency signals. 2.
APPLICATION PHASE DIFFERENCE MEASUREMENTS Method No.1 (Refer to Fig.15) This procedure is useful in measuring the phase difference of signals of the same frequency. 1. Apply the two signals to the CH 1 and CH 2 input jacks, selecting the dual-trace display mode (either ALT or CHOP). 2. Set the trigger SOURCE switch to the signal witch is leading in phases (or to LINE if device is line voltage operated) and use VOLTS/DIV controls to adjust the two waveforms so they are equal in amplitude. 3.
APPLICATION Method No.2 (Refer to Fig.16) The above procedure allows 45° per division, which may not give the desired accuracy for small phase differences. If greater accuracy is required, the sweep TIME/DIV setting may be changed to expand the display as shown in Fig.16, but the VAR SWEEP setting must not be to touched. If necessary, the TRIG LEVEL may be readjusted. For this type of operation, the relationship of one division to 45° no longer holds.
APPLICATION X-Y MODE APPLICATIONS (Refer to Fig.17) A dual-trace method of phase measurement was previously described. A second method of phases measurement requires calculations based on the Lissajous patterns obtained using X-Y operation. Distortion due to non-linear amplification can also be displayed. A sine wave is applied to the audio circuit being tested.
APPLICATION FREQUENCY RESPONSE MEASUREMENTS (Refer to Fig.19) 3.58 MHz 3.08 MHz 4.08 MHz 85% +15%, -20% 90%±10% VALLEY 15% MAX TILT 10% MAX 4.50MHz Fig.19 Frequency Response Measurement A sweep generator and the X-Y mode of this oscilloscope may be used to measure the audio or RF frequency response of an active or passive device up to 20 MHz, such as an amplifier, band pass filter, coupling network, etc. 1.
Maintenance OSCILLOSCOPE INSTRUCTION MANUAL WARNIN G! A following instruction are for use by qualified service personnel only. To avoid electrical shock, do not perform any servicing other contained in the operation instructions unless you are qualified to do so. High voltage up to 1,250 volts is present when cover is removed and the unit is operating. Remember that high voltage may be retained indefinitely on high voltage capacitors.
MAINTENANCE 2. Set the probe to X10 (compensation adjustment is not possible in the X1 position). 3. Touch tip of probe to CAL terminal. 4. Adjust oscilloscope controls to display 3 or 4 cycles of CAL square wave at 5 or 6 divisions amplitude. 5. Adjust compensation trimmer on probe for optimum square wave (minimum overshoot, rounding off, and tilt). Refer to Fig.20: 100 90 Correct Compensation Over Compensation Insufficient Compensation 10 0 Fig.
CH2(Y) INPUT CH1(X) INPUT EXT TRIG 62 EXT LINE TRIG PICK OFF AMP TRIG, X-AIXS PICK OFF AMP AUTO CIRCUIT FREE RUN SIGNAL TRIG SIGNAL TRIG GENERATOR X-AXIS SIGNAL CH2 OUTPUT CH B PRE AMP CH A PRE AMP TRIG INPUT AMP LINE TRIG INT(X-Y) CH B ATT CH A ATT COMP TEST FOR PS-XX5 ONLY DELAY SWEEP GENERATOR MAIN SWEEP GENERATOR INT TRIG SWITCH SWITCHING LOGIC VERT MODE SWITCH 2 Vp-p 1 kHZ SQUARE WAVE HV SUPPLY CRT CIRCUIT CRT POWER SUPPLY HORIZONTAL OUTPUT AMP TO EACH BLOCKS Z-AXIS AM
TINSE0049S4 Ver.
