72-9355 72-9360 72-9365 User Manual 1
72-9355 / 72-9360 / 72-9365 / User Manual Introduction Dear valued customer, Thank you for purchasing this Tenma instrument. To use your new product correctly, read this User Manual carefully and completely before operation, and pay particular attention to “Safety Instructions”. Please keep this User Manual in a safe place after reading it carefully. For easy reference during future operation, we recommend putting it alongside your TENMA product or in an easily accessible place.
72-9355 / 72-9360 / 72-9365 / User Manual This warranty does not apply to any defect, malfunction or damage caused by accident, normal wear and tear of mechanical parts, any form of application other than the stated ones, improper use, improper maintenance or poor maintenance.
72-9355 / 72-9360 / 72-9365 / User Manual Do not operate the unit with the chassis cover open or removed: Do not operate this unit when the outer cover or front panel is open. Use suitable fuses: Only use specified fuse types and rated specifications. Avoid exposing circuitry: When power is on, never make contact with exposed adaptor or components. When any fault is suspected, stop operation: If you suspect a fault, ask a qualified maintenance professional to carry out inspection. Maintain good ventilation.
72-9355 / 72-9360 / 72-9365 / User Manual Table of Contents Introduction : 72-93xx Series Digital Storage Oscilloscopes Chapter 1 User Guide 1. Getting to know your Digital Storage Oscilloscope 2. General Inspection 3. Functional Check 4. Probe Compensation 5. Automatic Setups 6. Getting to Know the Operation Panel Chapter 2 Instrument Setups 1. Resetting the Instrument 2. Using the Jog Dial Function 3. Vertical System Setup 4. Horizontal System Setup 5. Trigger System Setup 6.
72-9355 / 72-9360 / 72-9365 / User Manual Chapter 3 Chapter 4 Chapter 5 Chapter 6 12. Hiding the Menus 13. Using the Run Button 14.
2-9355 / 72-9360 / 72-9365 / User Manual Introduction : 72-93xx Series Digital Storage Oscilloscopes 72-93xx oscilloscopes offer user-friendliness, outstanding technical indicators and a host of advanced features. They are your perfect tools to complete testing tasks swiftly and efficiently.
72-9355 / 72-9360 / 72-9365 / User Manual z z z z z z Multiple waveform math functions (including add, subtract, multiply and divide) Edge, video, pulse width, and alternate trigger functions Multimeter function USB drive system software upgrade Multilingual menu displays Help messages in English and Chinese Included accessories: z 2 x 1.
72-9355 / 72-9360 / 72-9365 / User Manual 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. Figure 1-1 Front panel of Oscilloscopes Figure 1-2 Schematic diagram for the display interface Display Zone: Apart from the waveform display zone, the display panel also features other details about the waveform and the unit’s control setup.
72-9355 / 72-9360 / 72-9365 / User Manual DC trigger coupling mode, i.e. allowing both AC and DC quantities of the trigger signal to pass through to the trigger circuit. This mode is suitable for observing ultra-low frequency signals. __ High frequency suppression mode, i.e. rejecting high frequency AC quantities above 80 kHz of the trigger signal. This mode is suitable for observing low frequency signals. --- Low frequency suppression mode, i.e.
72-9355 / 72-9360 / 72-9365 / User Manual 1. Check the unit for possible shipping damages If the package carton or foam plastic protective lining is seriously damaged, please contact your Tenma dealer. 2. Check the accessories A checklist of accessories that come with your oscilloscope is provided in the section “Accessories” of this user manual. Please check any missing items against this list. If any item is missing or damaged, please contact your Tenma dealer. 3.
72-9355 / 72-9360 / 72-9365 / User Manual d You have to set the probe attenuation factor of the oscilloscope. This factor changes the vertical range multiple to ensure the measurement result correctly reflects the amplitude of the signal being tested. Set the attenuation factor of the probe as follows: Select other menu in Channel A then set probe ratio to 10X with the jog dial.
72-9355 / 72-9360 / 72-9365 / User Manual 2. Turn Channel A on then press [AUTO]. 3. Observe the shape of the displayed waveform. Overcompensation Correct Compensation Undercompensation Figure 1-6 Probe compensation calibration If you see an “Undercompensation” or “Overcompensation” waveform display, adjust the adjustable tab of the probe with screwdriver with non-metal handle in the probe accessory pack, until a “Correct Compensation” waveform shown in the above figure is displayed.
72-9355 / 72-9360 / 72-9365 / User Manual The Vertical System : By pressing the ( ) key to adjust the vertical range (V/div) of the oscilloscope, you can adjust the signal to a size best suited to screen display. By pressing the ( ) key to adjust the position of the reference waveform reference point, you can adjust the signal to the position best suited to screen display. The Horizontal System : Press the (sns) key to change the horizontal time base range setup.
72-9355 / 72-9360 / 72-9365 / User Manual Display, acquisition mode and automatic measurement (SCOPE) Storage setup and screen backup (SAVE) Cursor measurement ([CURSOR]) Utility setup ([USER]) Math function ([MATH]) Zoom function ([ZOOM]) Hiding the menu ([CLEAR]/[MENU]) Operation buttons ([AUTO], [RUN/STOP]) It is recommended that you read this chapter carefully to understand the various measurement functions and system operation steps of your oscilloscope. 1.
72-9355 / 72-9360 / 72-9365 / User Manual Parameter measurement Frequency counter Off Figure 2-2 Making menu selection with the jog dial b. Press [F3] to select display. Enter the display menu shown in the figure below.
72-9355 / 72-9360 / 72-9365 / User Manual Note : When operating the menu as shown in Figure 2-4, if the menu selection indicator is at “continuous”, you can press the return key [F5] to go back to the previous type menu to reset that page. 2. Controlling bias voltage with the jog dial (See the “Vertical System Setup” section for details) 3. Shifting trigger level with the jog dial (See the “Trigger System Setup” section on P.16 for details) 4.
72-9355 / 72-9360 / 72-9365 / User Manual 1. Setting channel coupling Take the example of applying a signal to Channel A. The signal being tested is a sine signal that contains DC quantities. Press [A] to select Channel A. Then press [F1] to set A input to “ON”. Next press [F2] to select DC coupling. Both DC and AC quantities of the signal being tested and input to Channel A can pass through.
72-9355 / 72-9360 / 72-9365 / User Manual (Note : In this mode, although waveform is not displayed, the input signal remains connected to the channel circuit) Input A On Coupling Ground Ground coupling setup Bandwidth limit Full bandwidth Bias Voltage Others Figure 2-8 Screen display for the ground mode 2. Setting the channel bandwidth limit Take the example of applying a signal to Channel B. The signal being tested is a signal stacked with high frequency quantities. Press [B] to turn Channel B on.
72-9355 / 72-9360 / 72-9365 / User Manual 4. Setting the probe rate To match the probe attenuation factor setup, it is necessary to set up the probe attenuation factor in the channel operation menu accordingly. For example, when the probe attenuation factor is 10:1, set the probe attenuation factor at 10X in the menu. Apply this principle to other values to ensure the voltage reading is correct. The figure below shows the setup and vertical range display when the probe is set at 10:1.
72-9355 / 72-9360 / 72-9365 / User Manual Return K-return Others Normal Figure 2-13 Inversion setup Press the jog dial once to confirm, then press the jog dial again to close the menu. Signal display is as shown below. Input A On Coupling DC Bandwidth limit Full bandwidth Bias Voltage Others Figure 2-14 Channel polarity setup (normal) Input A On Coupling DC Bandwidth limit Full bandwidth Bias Voltage Others Figure 2-15 Channel polarity setup (inverted) 4.
72-9355 / 72-9360 / 72-9365 / User Manual 5. Trigger System Setup Triggering decides when the oscilloscope collects data and display waveforms. Once the trigger is correctly set up, it can transform unstable displays into meaningful waveforms. When beginning to acquire data, the digital storage oscilloscope first collects sufficient data required for drawing a waveform on the left side of the trigger point.
72-9355 / 72-9360 / 72-9365 / User Manual Adjusting Hold-off Time You can adjust the hold-off time to observe complicated waveforms (e.g. pulse string series). Hold-off time means adjusting the data acquisition cycle of the digital storage oscilloscope. It is an exact multiple of the cycle of the complicated waveform being tested, thus synchronization is possible. For example, if the signals being tested are a group of wave signals, apply them to Channel A then press [TRIGGER] to select edge trigger mode.
******* 72-9355 / 72-9360 / 72-9365 / User Manual Table 2-3 (Con’t) Function Menu Trigger Trigger setup coupling Setup Explanatory Note Intercept AC and DC quantities of the input signal. Intercept DC quantities of the input signal. Suppress low frequency quantities below 80kHz of the signal. Suppress high frequency quantities above 80kHz of the signal. Set pulse width with the jog dial. Trigger occurs when pulse width equals to the set value.
72-9355 / 72-9360 / 72-9365 / User Manual When PAL is selected for standard format and synchronization mode is “specified line”, you will see a screen display as shown in Figure 2-17. When synchronization mode is “odd field”, you will see a screen display as shown in Figure 2-18.
72-9355 / 72-9360 / 72-9365 / User Manual 2) Trigger mode: Determine the action of your oscilloscope at trigger by selecting the mode. This oscilloscope offers three trigger modes for selection: auto, normal and single. Auto Trigger: The system will acquire waveform data automatically when there is no trigger signal input. The scan baseline is shown on the display. When the trigger signal is generated, it automatically turns to trigger scan for signal synchronization.
72-9355 / 72-9360 / 72-9365 / User Manual Table 2-6 Acquisition mode menu Function Menu Setup Acquisition mode Sampling Peak detect Average Average number of times (when average sampling is selected) Sampling mode 2~256 Real time Equivalent Explanatory Note Set to standard sampling mode. Set to peak detect mode. Set to average sampling and display the average number of times. Set the average number of times in multiples of 2, i.e. 2, 4, 8, 16, 32, 64, 128, 256.
72-9355 / 72-9360 / 72-9365 / User Manual Note : 1. Use Real time sampling to observe single signals. 2. Use Equivalent sampling to observe high frequency cyclical signals. 3. To avoid mixed envelop, select Peak Detect. 4. To reduce random noise of the displayed signal, select average sampling and increase the average number of times in multiples of 2, i.e selecting from 2 to 256.
72-9355 / 72-9360 / 72-9365 / User Manual 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 display the B signal. Caution: In the normal X-Y mode, you can adjust waveform amplitude with VOLTS/DIV of the two channels. Adjusting the s/DIV time base will result in a lissajous figure of better display quality.
72-9355 / 72-9360 / 72-9365 / User Manual Example 1: To display the measurement peak-to-peak value of Channel A, follow the steps below: 1. Press [A] to turn on Channel A. 2. Press [SCOPE] to enter the frequently used function menu. 3. Press [F2] to enter the parameter measurement options. 4. Press [F1] to select customized parameter for parameter measurement. 5. Press [F2] to select parameter 1 as the customized parameter. 6.
72-9355 / 72-9360 / 72-9365 / User Manual Your oscilloscope can automatically measure the following time parameters: Rise Time: The time taken by the waveform to rise from 10% to 90%. Fall Time: The time taken by the waveform to fall from 90% to 10%. Positive Pulse Width (+Width): The pulse width when positive pulse is at 50% amplitude. Negative Pulse Width (-Width): The pulse width when negative pulse is at 50% amplitude. Rising delay (Rise): Delayed time of the rising edge from A to B.
72-9355 / 72-9360 / 72-9365 / User Manual 7. Storage Setups and Screen Copy As shown in Figure 2-25, press [SAVE] to access the storage menu. Save Recall Record Off Figure 2-25 Storage menu You can save and recall waveforms and setup documents on the oscilloscope’s internal memory and any USB device. You can also save and recall waveform documents and setup documents on a USB device. For setup see the table below.
72-9355 / 72-9360 / 72-9365 / User Manual To store the waveform on a USB device, repeat the above steps but select USB as the save medium. The save menu is as follows: Save Waveform A Position Run Return Figure 2-26 Waveform save menu Screen copy With this function, you can save the display interface on the USB device. Example 2 : To request saving the display interface on the USB device. 1. Press [A] to turn on Channel A. 2. Insert the USB device into the USB jack. 3.
72-9355 / 72-9360 / 72-9365 / User Manual Table 2-12 Record menu Function Menu Waveform record Playback Import Save Setup ON OFF See Table2-13 USB document (1-10) USB document (1-10) Return Explanatory Note Turn the waveform recording function on and off. Playback the recorded waveform on the screen. Import the recorded waveform document on the USB device to the oscilloscope. Save the recorded waveform on the USB device. Go back to the previous menu.
72-9355 / 72-9360 / 72-9365 / User Manual Example 5: To request recalling a recorded waveform document saved on the USB device from Example 4 to the oscilloscope and playback. 1. Insert the USB device and press [SAVE] to access the storage menu. Press [F3] to select the recording function. 2. Press [F3] to select “import”, then press [F2] to activate the “USB document” option. Select “3” with the jog dial and press [F4]. The playback waveform will appear on screen when the “Loading.......
72-9355 / 72-9360 / 72-9365 / User Manual Table 2-14 Utility menu Setup Function Menu Option Energy-save OFF mode 5 min 10 min 15 min 20 min Explanatory Note When operating with battery, the oscilloscope will power off at the set time to save battery power if the unit remains idle for a specified period of time. If DC power adaptor is connected, this energy-save mode is disabled.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 2-15 Math function menu Function Menu Setup Math + × ÷ OFF Signal source 1 A B Signal source 2 A B Vertical range 5mV-50V Shift ⎯ Explanatory Note Signal source 1 + Signal source 2 Signal source 1 - Signal source 2 Signal source 1 x Signal source 2 Signal source 1 ÷ Signal source 2 Close the math function Set signal source 1 as Channel A waveform Set signal source 1 as Channel B waveform Set signal source 2 as Channel A waveform Set signal source 2 as Chann
72-9355 / 72-9360 / 72-9365 / User Manual How to operate FFT functions Signals with DC quantities or offset signals will cause error or offset of FFT waveform quantities. To reduce DC quantities, select “AC” coupling. To reduce random noise and frequency aliasing resulted by repeated or single pulse event, set the acquiring mode of your oscilloscope to “Average” acquisition.
72-9355 / 72-9360 / 72-9365 / User Manual Definition: FFT recognition rate: It 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. 11.
72-9355 / 72-9360 / 72-9365 / User Manual Auto Setup: Auto Setup can simplify operation. Press [AUTO] and the oscilloscope can automatically adjust the vertical deflection factor and horizontal time base range according to the amplitude and frequency of the waveform, so as to ensure stable waveform display.
72-9355 / 72-9360 / 72-9365 / User Manual Chapter 3 ⎯ Practical Example Illustrations Illustration 1: Measuring simple signals To observe and measure an unknown signal in the circuit, and to quickly display and measure the signal’s frequency and peak-to-peak value. 1. c To quickly display this signal, follow the steps below : In the probe menu, set the attenuation factor to 10X and set the switch on the probe to 10X. d Connect the Channel A probe to the circuitry point to be measured. e Press [AUTO].
72-9355 / 72-9360 / 72-9365 / User Manual Illustration 2: Observing the delay caused by a sine wave signal passes through the circuit As in the previous scenario, set the probe attenuation factor of the probe and oscilloscope channel to 10X. Connect Channel A to the circuit signal input terminal. Connect Channel B to the output terminal. Steps: 1. To display Channel A and Channel B signals: c Press [AUTO]. d Continue to adjust the horizontal and vertical range until you get the desired waveform display.
72-9355 / 72-9360 / 72-9365 / User Manual Steps: 1. As in the previous illustration, set the attenuation factor of the probe and Channel A. 2. Carry out trigger setup. c Press [TRIGGER] to display the trigger setup menu. d In this menu, use [F1]~[F5] and the jog dial to set the trigger type to edge, set trigger source to A, set trigger coupling to AC, set trigger type to single and set edge polarity to rising. e Adjust horizontal time base and vertical range to an appropriate range.
72-9355 / 72-9360 / 72-9365 / User Manual Steps : 1. As in the previous illustration, set the attenuation factor of the probe and Channel A. 2. Connect the signal to ensure stable display of waveform. See the previous illustration for operation instruction. See the previous chapter for guidance on adjusting the horizontal time base and vertical range. 3. Improving trigger by setting trigger coupling. c Press [TRIGGER] to display the trigger setup menu.
72-9355 / 72-9360 / 72-9365 / User Manual Measuring the width of a single pulse within the pulse signals To measure the width of a single pulse within the pulse signals, follow the steps below : 1. Press [CURSOR] to display the cursor measurement menu. 2. Press [F1] to set cursor type to time. 3. Move cursor 1 to the rising edge of the single pulse with the jog dial. 4. Press the jog dial to select cursor 2, then turn the jog dial to move cursor 2 to the 2nd peak value of the single pulse.
72-9355 / 72-9360 / 72-9365 / User Manual 9. Using the elliptic oscilloscope display graph to observe, measure and calculate the phase difference. (See the figure below) The signal must be horizontally center Figure 3-7 Lissajous figure If sin θ = A or C B D, θ is the angle of disparity between the channels. For definitions of A, B, C, D see the above figure. Calculating with this formula, the angle of disparity is θ = ±arcsin (A ) or θ = ±arcsin (C ).
72-9355 / 72-9360 / 72-9365 / User Manual Trigger Video Trigger source A Standard PAL Synchronization Odd field Figure 3-9 Video odd field triggering Video line triggering To trigger on the video line, follow the steps below: 1. Press [TRIGGER] to display the trigger menu. 2. Press [F1] to set the type to video. 3. Press [F2] to set trigger source to A. 4. Press [F3] select PAL as the video standard. 5. Press [F4] to select defined line synchronization. 6.
72-9355 / 72-9360 / 72-9365 / User Manual Chapter 4 ⎯ System Prompts and Trouble-shooting 1. Definitions of System Prompts Adjustment at Ultimate Limit: This informs you that the multifunction control knob has reached its adjustment limit in the current status. No further adjust is possible. When the vertical deflection factor switch, time base switch, X shift, vertical shift and trigger level adjustments have reached their ultimate limits, this prompt will appear.
72-9355 / 72-9360 / 72-9365 / User Manual 5. 6. 7. d Check the trigger type: Use edge trigger for ordinary signals and video trigger for video signals. Stable waveform display is achieved only when the correct trigger mode is selected. e Try changing the coupling display to high frequency suppression or low frequency suppression to filter any high or low frequency noise that is interfering with triggering.
72-9355 / 72-9360 / 72-9365 / User Manual 2. The hardware version of the program upgrade pack must be the same with the oscilloscope to be upgraded. 3. The software version of the program upgrade pack must be higher than or same as the software version of the oscilloscope to be upgraded. 4. The FLASH type of the program upgrade pack must be the same as the oscilloscope to be upgraded. Program upgrade 1.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 5-3 3. On the screen shown in Figure 5-3, press [F5] to confirm you require to upgrade the program. The screen shown in Figure 5-4 will appear with the following prompt: “System upgrade is in progress. This process will take 3 to 5 minutes. To avoid unforeseeable error, do not disconnect power during system upgrade. Current upgrade progress is ......%.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 5-5 Caution: When you restart the oscilloscope after successful upgrade, the system will initiate itself. It will take 30 seconds to 1 minute for the operation screen to appear. Abnormality prompts: Program upgrade may fail due to various reasons. Below are some common causes for upgrade failure and the prompts that help users to upgrade the software program successfully. If upgrade fails, remove the USB device and restart the oscilloscope.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 5-7 3. During upgrade, if the system cannot find the upgrade document in the USB root directory, the message in Figure 5-8 will appear: “Cannot find the valid update file! Please ensure the update file is in the USB root directory. Remove the USB device and reboot.” Figure 5-8 4. During upgrade, if the document in the USB root directory has been damaged and cannot be read, you will see the prompt shown in Figure 5-9: “Sorry, reading has failed.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 5-9 5. During upgrade, if the FLASH of the program upgrade document you copy or select is different from that of the oscilloscope, the prompt in Figure 5-10 will appear: “FLASH of the upgrade document is incompatible with the oscilloscope. Please read the user manual, access system information in the utility menu and contact us. Remove the USB device and reboot.” Figure 5-10 6.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 5-11 7. If the model of the program upgrade pack is incompatible with the oscilloscope, the prompt in Figure 5-12 will appear: “Program upgrade pack and product model incompatible. Please read the user manual and check the oscilloscope model in system information under the utility menu. You should download an upgrade pack which corresponds with your oscilloscope model. Remove the USB device and reboot.” Figure 5-12 8.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 5-13 9. If the software version of the upgrade document is lower than that of the oscilloscope, the prompt in Figure 5-14 will appear “Software version of program upgrade pack is lower than that of the oscilloscope. Please read the user manual and check the software version in system information under the utility menu. You should download a version of upgrade pack which is higher than or same as your oscilloscope software. Remove the USB device and reboot.
72-9355 / 72-9360 / 72-9365 / User Manual Figure 5-15 11. If an unknown error occurs when the user is updating the program, the prompt in Figure 5-16 will appear: “Sorry, program upgrade has failed. Please read the user manual and contact us. Remove the USB device and reboot.” Figure 5-16 Caution: If this error message appears during upgrade, download a new program upgrade pack and start upgrade all over again. Your oscilloscope has to be successfully upgraded to resume normal operation.
72-9355 / 72-9360 / 72-9365 / User Manual 2. Warranty Tenma warrants that product produced and marketed by it will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment by the authorized dealer. If any such product proves defective during this warranty period, Tenma will repair the defective product or provide a replacement in exchange according to detailed provisions of the warranty.
72-9355 / 72-9360 / 72-9365 / User Manual Chapter 6 ⎯ Appendixes Appendix A: Performance Indicators Unless otherwise specified, all technical specifications apply to probes with an attenuation setting of 10X and the 72-93xx Series Digital Oscilloscopes. To verify that your oscilloscope meets specifications, it must first meet the following conditions: The oscilloscope must have been operating continuously for thirty minutes within the specified operating temperature.
72-9355 / 72-9360 / 72-9365 / User Manual Horizontal Waveform interpolation Recording length Storage depth Scanning range (s/div) Accuracy of sampling rate and delay time Time interval (∆T) measurement accuracy (full bandwidth) Linear 2 x 512K sampling point 7.5k 2ns/div-50s/div (200MHz); 5ns/div-50s/div (100MHz, 60MHz); At 1-2-5 increment. ±50ppm (any time interval ≥1ms) Single : ± (1 sampling time interval + 50ppm x reading + 0.6ns); > 16 average values: ± (1 sampling time interval + 50ppm x reading + 0.
72-9355 / 72-9360 / 72-9365 / User Manual Vertical Model 72-9365, 72-9360, 72-9355 A/D converter (A/D) 8-bit resolution Deflection factor (V/div) 5mV/div ~ 50 V/div at input BNC Range (V/div) Displacement range ± 10 div Analog bandwidth 200MHz, 100MHz, 60MHz Single bandwidth 200MHz, 100MHz, 60MHz Selectable analog bandwidth 20MHz limit (Typical) Low frequency response ≤ 10Hz at BNC (AC coupling, -3dB) Rise time ≤1.8ns, ≤2.3ns, ≤3.5ns, ≤4.3ns, ≤5.8ns, ≤8.
72-9355 / 72-9360 / 72-9365 / User Manual Trigger Trigger sensitivity ≤ 1 div Trigger level range ± 5 div from the centre of the screen Trigger level accuracy ± (0.3 div x V/div) (within ± 4 div from the centre of the (Typical) applied on signals screen) of ≥20ns rise or fall time Pre-trigger capability Normal mode/scanning mode, pre-trigger/delayed trigger. Pre-trigger depth is adjustable. Hold-off range 40ns – 1.
72-9355 / 72-9360 / 72-9365 / User Manual Measurement Cursor Automatic measurement Manual mode Voltage difference (∆V) between cursors, time difference (∆T) between cursors. Cursor display is allowed during auto measurement. Total 27 measurements : peak-to-peak, amplitude, maximum, minimum, top, bottom, mean, average, root mean square, overshoot, pre-shoot, frequency, cycle, rising time, falling time, positive pulse, negative pulse, positive duty ratio, negative duty ratio, rise delay, fall delay.
72-9355 / 72-9360 / 72-9365 / User Manual Digital Multimeter Resistance measurement DC voltage measurement AC voltage measurement DC current measurement (external module) AC current measurement (external module) Capacitance measurement ON/OFF measurement Diode measurement Measurement modes Maximum display number Range : 600Ω, 6kΩ, 60kΩ, 600kΩ, 6MΩ, 60MΩ Precision : 60MΩ ± (1.5% + 3 quantization words) Others : ± (1.
72-9355 / 72-9360 / 72-9365 / User Manual Power Source Source Voltage Power Consumption DC power supply Environmental Temperature 100 - 240VACRMS, 45-440Hz, CAT II Less than 20VA. 72-9355 / 72-9360 : 3h 72-9365 : 2h Cooling Method Operating : 0°C~+40°C Non-operating : -20 °C~+60°C Natural cooling. Humidity ＜+ 35°C : ≤ 90% RH; +35°C~+40°C : ≤ 60% RH; Altitude Operating : 3,000m. Non-operating : 15,000m.
72-9355 / 72-9360 / 72-9365 / User Manual z z DC adaptor One multimeter pen Appendix C : Maintenance and Cleaning General Care Do not store or leave the oscilloscope where the LCD display will be exposed to direct sunlight for long periods of time. Caution: To avoid damage to the oscilloscope or probes, do not expose them to sprays, liquids, or solvents. Cleaning Inspect the oscilloscope and probes as often as operating conditions require. To clean the exterior surface, perform the following steps : 1.
72-9355 / 72-9360 / 72-9365 / User Manual C Copyright 2011 Tenma All rights reserved. Manufacturer: Tenma 405 S. Pioneer Blvd, Springboro, Ohio 45066-3001 Phone: 1-888-655-5409 This user manual may be revised without prior notice.
