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Summary of Contents for Promax OS-782
- Page 1 OS-782 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 TestEquipmentDepot.com DIGITAL OSCILLOSCOPE & MULTIMETER - 0 MI1737 -...
- Page 2 SAFETY NOTES Read the user’s manual before using the equipment, mainly " SAFETY RULES " paragraph. The symbol on the equipment means "SEE USER’S MANUAL". In this manual may also appear as a Caution or Warning symbol. Warning and Caution statements may appear in this manual to avoid injury hazard or damage to this product or other property.
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Page 3: Table Of Contents
User’s Manual . OS-782 T A B L E C O N T E N T S GENERAL........................1 Description ......................1 Specifications Oscilloscope................. 2 Specifications Multimeter ..................5 SAFETY RULES......................7 General........................ 7 Descriptive Examples of Over-Voltage Categories ..........9 DESCRIPTION FOR FRONT PANEL AND KEYS .......... - Page 4 User’s Manual . OS-782 USING THE MULTIMETER..................49 About this chapter ..................... 49 Making Meter Connections................49 Multimeter Operation Window ................49 Making Multimeter Measurements ..............51 5.4.1 Measuring Resistance Values ..............51 5.4.2 Making a Diode Measurement..............51 5.4.3...
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Page 5: General
OS-782 1 GENERAL Description The OS-782 poliscope has two measurement instruments built-in: one digital oscilloscope and one multimeter. Its rugged construction, small size, lightweight and battery-powered, lead it to be a handheld instrument ideal to carry out multiple external measurements, where to work with conventional equipments it is very uncomfortable. It... -
Page 6: Specifications Oscilloscope
USER’S MANUAL. OS-782 Specifications Oscilloscope Only if another instructions are provided, are all technical specifications applicable to the probe with the 10X attenuation switch setting and the HDS series digital type oscilloscope. In order to be up to these specifications, the oscilloscope should meet the following requirement. - Page 7 USER’S MANUAL. OS-782 VERTICAL Analog digital converter (A/D) With the resolution of 8 bits, make sampling on both channels synchronously. Sensitivity range (V/div) 5mV/div~5V/div at the input BNC. Displacement range ±50 V(500 mV~5 V), ±2 V(5 mV~200 mV). Analog bandwidth 20 M.
- Page 8 USER’S MANUAL. OS-782 GENERAL SPECIFICATIONS Display Display type 3.8’’ color LCD display. Display resolution 320 (horizontal) x 240 (vertical) pixels. Power consumption 4096 colors. Mechanical features 180 (W) × 115 (H) × 40 (D) mm. Dimensions Weight 0.645 kg. Power supply Internal 7.4 V Li-Ion Built-in Rechargeable battery.
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Page 9: Specifications Multimeter
USER’S MANUAL. OS-782 Specifications Multimeter Maximum tension of the points of measure to land 400V CAT II Voltage (VDC) Input Impedance: 10MΩ Range Accuracy Resolution 100 µV 400 mV 4.000 V 1 mV ± 1% ± 1 digit 40.00 V 10 mV 400.0 V... - Page 10 USER’S MANUAL. OS-782 Resistance Range Accuracy Resolution 400.0 Ω 0.1 Ω ± 1% ± 3 digits 4.000k Ω 1 Ω 40.00k Ω 10 Ω ± 1% ± 1 digit 400.0k Ω 100 Ω 4.000M Ω 1 KΩ 40.00M Ω ± 1.5% ± 3 digits 10 KΩ...
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Page 11: Safety Rules
USER’S MANUAL. OS-782 2 SAFETY RULES General Only use this equipment as OSCILLOSCOPE in systems with their negative of measurement connected to no-dangerous voltages with respect to the ground potential. Only use the equipment as MULTIMETER in points with a maximum potential of 400 V with respect to the ground potential and over voltage category CAT II. - Page 12 USER’S MANUAL. OS-782 Symbols related with safety: DIRECT CURRENT ALTERNATING CURRENT DIRECT AND ALTERNATING GROUND TERMINAL PROTECTIVE CONDUCTOR FRAME TERMINAL EQUIPOTENTIALITY ON (Supply) OFF (Supply) DOUBLE INSULATION (Class II Protection) CAUTION (Risk of electric shock) CAUTION REFER TO MANUAL FUSE...
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Page 13: Descriptive Examples Of Over-Voltage Categories
USER’S MANUAL. OS-782 Descriptive Examples of Over-Voltage Categories Cat I Low voltage installations isolated from the mains Cat II Portable domestic installations Cat III Fixed domestic installations Cat IV Industrial installations Page 9 02-2010... - Page 14 USER’S MANUAL. OS-782 02-2010 Page 10...
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Page 15: Description For Front Panel And Keys
USER’S MANUAL. OS-782 3 DESCRIPTION FOR FRONT PANEL AND KEYS See the following Figure 1 : Figure 1.- Front Pannel. Description: Power adapter jack. USB port. Backlight switch. : Power switch. A: Multimeter current measurement key. Page 11 02-2010... - Page 16 USER’S MANUAL. OS-782 V: Multimeter voltage measurement key. R: Multimeter resistance, triode, On/Off and capacitance measurement key. OSC ◄: Oscilloscope left-direction adjustment key. OSC ►: Oscilloscope right-direction adjustment key. 10. OSC OPTION: Oscilloscope setting key. With the combination application of the four keys “OSC ◄”, “OSC ►”, “OSC ▲”...
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Page 17: Using The Oscilloscope
USER’S MANUAL. OS-782 4 USING THE OSCILLOSCOPE Power-Up the oscilloscope Connect oscilloscope to AC power via a power adapter as shown in Figure 1. (The oscilloscope may still work with built-in Li-ion battery even without AC power supply). Turn the oscilloscope on by pressing down the power on/off key “... -
Page 18: Oscilloscope Operation Window
USER’S MANUAL. OS-782 Oscilloscope Operation Window See the following figure 2 : Figure 2.- Oscilloscope Operation Window. Description Battery electric quantity indicating symbols, including: , , Measurement indicators 1 and 2. Diverse parameters can be shown: Frequency “f”, peak value (Up), V (average value) etc…... - Page 19 USER’S MANUAL. OS-782 This reading gives the Time Difference between the horizontal triggering position and the screen centerline. It reads zero when the pointer is in the center of the screen. The trigger state indicates the following information. Auto: The oscilloscope is working in the automatic mode and displaying the waveform under the non-trigger state.
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Page 20: Navigating A Menu
USER’S MANUAL. OS-782 OSC OPTION indications: Whenever you press the OSC OPTION they are shown parameters to be modified by means of the cursor keys: The red indicator shows the CH1 zero position. If channel CH1 is deactivated, this indicator disappears. -
Page 21: Manually Setting The Vertical System, Horizontal System And Trigger Position17
USER’S MANUAL. OS-782 Manually Setting the Vertical System, Horizontal System and Trigger Position With the combination application of the four keys “OSC ◄”, “OSC ►”, “OSC ▲” and “OSC ▼”, the users can make the following settings circularly by pressing OSC OPTION. - Page 22 USER’S MANUAL. OS-782 Figure 5.- Voltage Unit Scale of Channel 2. Press the “OSC ” or “OSC ” key to adjust the vertical scale of Channel 2 and press the “OSC ◄” or “OSC ►” key to adjust the horizontal time scale.
- Page 23 USER’S MANUAL. OS-782 ◄/► — Time — CH2 Zero Figure 7.- Zero point position of channel 2. Press the “OSC ” or “OSC ” key to adjust the zero position of Channel 2 in the vertical direction and press “OSC ◄” or “OSC ►” key to adjust the horizontal position.
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Page 24: Resetting The Oscilloscope
USER’S MANUAL. OS-782 Press the “OSC ” or “OSC ” key to adjust the trigger position of Channel 2 and press “OSC ◄” or “OSC ►” key to adjust the horizontal position. Press the “OSC OPTION” key again and return back to step 1. -
Page 25: Automatic Zero-Returning Of Trigger Horizontal Position And Trigger Level Position
USER’S MANUAL. OS-782 To enable the Auto-Set feature, do the following: Connect the test probe to the tested signals. Press the AUTO SET key and the Oscilloscope is under the automatic measurement condition. The tested signals appear on the screen. -
Page 26: Freezing The Screen
USER’S MANUAL. OS-782 To choose a Peak-Peak measurement for Input CH2, do the following: Press MENU, key and the function menu is displayed on the right side of the screen. Press “MENU ” or “MENU ” key and select Measurement 2, with 5 items selectable displayed at the bottom of the screen. -
Page 27: Setting The Vertical Ch1 And Ch2
USER’S MANUAL. OS-782 Figure 11.- Freezing the screen. 4.11 Setting the Vertical CH1 and CH2 Each channel has its own independent vertical menu and each item can be set respectively based on the specific channel. Open the vertical menu of functions and select to CHANNEL 1 or CHANNEL 2 functions. -
Page 28: Setting The Channel Coupling
USER’S MANUAL. OS-782 The following Table describes the Vertical Channel menu: Function Description Setting menu Coupling The DC component in the input signal is blocked. The AC and dc components of the input signal are allowed. Ground Channel Close Close the channel. -
Page 29: Make Open And Close Settings On Channel
USER’S MANUAL. OS-782 Figure 14.- DC coupling. 4.11.2 Make Open and Close Settings on Channel With CH1 taken for example: Press F2 Channel first, then Close to make a Close setting on CH1. Press F2 Channel key first, then Open to make an Open setting on CH1. -
Page 30: Setting Of Inverted Waveform
USER’S MANUAL. OS-782 4.11.4 Setting of Inverted Waveform Inverted waveform: The displayed signal reverses 180 degrees relatively to the ground potential. Press F4 Invert to start Invert; again press F4 Invert to close Invert. 4.12 MATH function “MATH” The MATH functions in showing the result of adding, subtracting, multiplying or dividing calculation on CH1 and CH2 channel waveforms. -
Page 31: Setting The Trigger System. Trigger Function
USER’S MANUAL. OS-782 Again, press the OSD OPTION key twice and the screen shows the following: ◄ ► Time - CHM Zero Press the “OSC ” or “OSC ” key to adjust the position of the waveform Math. Now, look at the display and you will find a screen that looks like the following Figure 15. -
Page 32: Triggering Control
USER’S MANUAL. OS-782 Select and press one from F1 through F5 key to make a different setting. Press the OSD OPTION key and the following is shown on the screen: ◄ ► — Time — Trig Press the “OSC ” or “OSC ”... -
Page 33: Edge Triggering
USER’S MANUAL. OS-782 4.14.1 Edge triggering The Edge triggering menu is described in the following table. Function menu Settings Description Slope Rise Triggering on the rise edge of the signal. Fall Triggering on the fall edge of the signal. CH1 is used as the trigger source. -
Page 34: Video Triggering
USER’S MANUAL. OS-782 1. Automatic trigger mode: The oscilloscope can acquire the waveform without any triggering condition detected in this mode, in which it will be triggered compulsively when waiting for a specified period of time without any triggering condition ignited When an invalid trigger is enforced the oscilloscope can not keep the waveform in phase. - Page 35 USER’S MANUAL. OS-782 Figure 18.- Video line trigger. The Video triggering menu is described in the following table: Function Settings Description menu Polarity Normal Applicable to the video signal in which the black level is of low level. Applicable to the video signal of which the black level Invert is of high level.
- Page 36 USER’S MANUAL. OS-782 When the sync is Designed Line,the second page menu is shown as below. NTSC Format Video format setting PAL/SECAM Increase Set the line value to increase Line Decrease Set the line value to decrease Set and Show the line valve Line No.
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Page 37: Acquiring Mode Setting
USER’S MANUAL. OS-782 NOTE: Trigger Holdoff can stabilize complex waveform, such as the pulse range. Holdoff time is the oscilloscope’s waiting period before starting a new trigger. During Holdoff, oscilloscope will not trigger until Holdoff ends. 4.15 Acquiring Mode Setting Open the vertical menu of functions and select the ACQUIRE function. -
Page 38: Display Style
USER’S MANUAL. OS-782 4.16.1 Display Style The display style includes Vector and Dot displays, shown as the following figure 20, figure 21: Figure 20.- Dot style. Figure 21.- Vector style. 4.16.2 Persistence With Persistence function selected, the displayed saved original data gradually decay in color and the new data are bright in color;... -
Page 39: Xy Mode
USER’S MANUAL. OS-782 4.16.3 XY mode This mode is only applicable to CH1 and CH2. With the XY mode selected, CH1 is displayed on the horizontal axis and CH2 is on the vertical axis; when the oscilloscope is under the sampling mode in which no trigger is found, the data appear in light spots. -
Page 40: Function Setting Menu
USER’S MANUAL. OS-782 To save a waveform on CH1 in address A, do the following: Press the MENU key and the function menu appears at the right of the screen. Press the “MENU ▲” or “MENU ▼” key to select the Waveform Saving. Four items selectable are displayed at the bottom of the screen. -
Page 41: Making Automatic Measurements
USER’S MANUAL. OS-782 Function menu Setting Description Recall Factory Resume the instrument to its factory settings. Auto Calibration Perform the self-correcting procedure. Language SPANISH Select the display language of the system. ENGLISH Self-correcting The self-correcting program can improve the accuracy of the oscilloscope under the ambient temperature to the maximum. - Page 42 USER’S MANUAL. OS-782 Function menu Settings Description Measure the Vtop of CH1 Vtop Measure the Vtop of CH2 Measure the Vbase of CH1 Vbase Measure the Vbase of CH2 Measure the Vamp of CH1 Vamp Measure the Vamp of CH2...
- Page 43 USER’S MANUAL. OS-782 Now, you can see a screen that looks like the following figure. Figure 23.- Automatic Measurements. Term interpretation Vpp: Peak-to-Peak Voltage. Vmax: The maximum amplitude. The most positive peak voltage measured over the entire waveform. Vmin: The minimum amplitude. The most negative peak voltage measured over the entire waveform.
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Page 44: Setting The Cursor Measurements
USER’S MANUAL. OS-782 +Width: The width of the first positive pulse in 50% amplitude points. -Width: The width of the first negative pulse in the 50% amplitude points. Delay 1→2 : The delay between the two channels at the rising edge. - Page 45 USER’S MANUAL. OS-782 Press and hold the OSC OPTION key till ▲ ▼ CURSOR V2 appears on the screen. Now, adjust the OSC ▲ or OSC ▼ and you can observe the dashed line V2 moving up and down while the measured voltage value of V2 relative to the zero position of CH1 is displayed on the screen.
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Page 46: Autoscale
USER’S MANUAL. OS-782 Figure 25: Use the cursor for a time measurement. 4.21 Autoscale The function is applied to follow-up signals automatically even if the signals change at any time. Autoscale enables the instrument to set up trigger mode, voltage division and time scale automatically according to the type, amplitude and frequency of the signals. - Page 47 USER’S MANUAL. OS-782 If you want to measure voltage of Channel 1, you can do as the follows: Press MENU, the function menu will appear on the right of the screen. Press MENU ▲ or MENU ▼ and choose Autoscale, three options will show at the bottom of the screen.
- Page 48 USER’S MANUAL. OS-782 Figure 28.- Only under vertical mode multi-period waveform. Figure 29.- Only under horizontal mode multi-period waveform. NOTE: Entering into Autoscale function and flicker will be on the top left corner. (flicker every 0.5 second). At the mode of Autoscale, the oscilloscope can self-estimate “Trigger mode”...
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Page 49: System State Menu
USER’S MANUAL. OS-782 At the mode of Autoscale, DSO is always in the state of DC coupling and AUTO triggering. In this case, the forbidden information will be showing when making Triggering or Coupling settings. At the mode of Autoscale, if adjust the vertical position, voltage division,... -
Page 50: Horizontal Axis Setting. Horizontal Function
USER’S MANUAL. OS-782 4.23 Horizontal axis setting. HORIZONTAL function Open the vertical menu of functions and select the HORIZONTAL function. The parameters to be modified with F1∼F5 keys will appear in the lower part of the display. The time base mode menu is explained as the following table:... -
Page 51: Data Transmission To The Pc
4.24 Data transmission to the PC The oscilloscope OS-782 has an USB port that allows to transmit the data shown and/or memorized from the instrument to the computer. With the equipment a CD with the communication program is enclosed. In order to install it you must follow these instructions. -
Page 52: User's Manual . Os
USER’S MANUAL. OS-782 Open the explorer and run the Setup.exe file and follow the installer instructions. By default the program is installed in folder: c \ Program files \ PROMAX\OS-wave. Once installed, connect the USB cable between the equipment and the PC. -
Page 53: Using The Multimeter
USER’S MANUAL. OS-782 5 USING THE MULTIMETER About this chapter This chapter provides a step-by-step introduction to the multi-meter functions of the test tool(hereafter. The introduction gives basic examples to show how to use the menus and perform basic operations. - Page 54 USER’S MANUAL. OS-782 Description Battery electric quantity indictor. MANUAL/AUTO RANGE indictors, among which the MANUAL means measuring range in manual operation mode and Auto refers to the measuring range in automatic operation mode. Measurement mode indicators: DCV: Direct voltage measurement CC.
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Page 55: Making Multimeter Measurements
USER’S MANUAL. OS-782 Making Multimeter Measurements Press DMM/OSC key, the oscilloscope will switch to the multimeter measure, the screen will display the multimeter windows, at the same time, prompt to correctly insert testing pen of the multimeter, at this time, then press any key to enter into multimeter measure. -
Page 56: On-Off Test
USER’S MANUAL. OS-782 Insert the black lead into the COM banana jack input and the red lead into the V/Ω banana jack input. Connect the red and black leads to the resistor and the diode resistor readings are displayed on the screen in V. Now, you can see a screen that looks like the following Figure 35. -
Page 57: Making A Capacitance Measurement
USER’S MANUAL. OS-782 Figure 36.- On-off test. 5.4.4 Making a Capacitance Measurement To measure a capacitance, do the following: Press the R key and R appears on the top of the screen Press the AUTO SET key four times and C appears at the top of the screen. -
Page 58: Making A Dc Voltage Measurement (Vdc)
USER’S MANUAL. OS-782 5.4.5 Making a DC voltage Measurement (VDC) To measure a DC voltage, do the following: Press the V key and DCV appears at the top of the screen. Insert the black lead into the COM banana jack input and the red lead into the V/Ω... -
Page 59: Making A Dc Current Measurement (Aac)
USER’S MANUAL. OS-782 Figure 39.- AC voltage Measurement. 5.4.7 Making a DC current Measurement (AAC) In order to carry out the measurement of current it is necessary to connect in series the meter and the circuit under test. Make sure that the circuit is disconnected before doing this connection. - Page 60 USER’S MANUAL. OS-782 Figure 40.- DC current Measurement for 400 mA. To measure a DC current which is larger than 400 mA, do the following: Press the A key and DCA appears at the top of the screen. The unit on the main reading screen is mA.
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Page 61: Making An Ac Current Measurement
USER’S MANUAL. OS-782 5.4.8 Making an AC Current Measurement In order to carry out the measurement of current it is necessary to connect in series the meter and the circuit under test. Make sure that the circuit is disconnected before doing this connection. -
Page 62: Freezing The Readings
USER’S MANUAL. OS-782 Plug current extended module in current measure jack, then plug the probe in the module. Connect the red and black leads to the measured point and the AC current value of the measured point will be displayed on the screen. -
Page 63: Taking A Relative Measurement
USER’S MANUAL. OS-782 Figure 44: Freezing the Readings. Taking a relative measurement A currently measured result relative to the defined reference value is displayed in a relative measurement. The following example shows how to take a relative measurement. At first, it is required to acquire a reference value. -
Page 64: Selecting Automatic/Manual Range Adjustment
USER’S MANUAL. OS-782 Figure 45.- Relative Measurement. Selecting automatic/manual range adjustment The defaulted range mode of the instrument is automatic range. To switch to the manual range, perform the following steps: Press F1 key and MANUAL is displayed on the top left side of the screen to enter the manual range mode. -
Page 65: Trouble Shooting
However, don’t switch on the oscilloscope till waiting for 15 minutes. If the oscilloscope still cannot start, please contact PROMAX for service. The oscilloscope stops work only after operating for several seconds. - Page 66 USER’S MANUAL. OS-782 There is no display on the screen when you push down RUN/STOP key under the oscilloscope mode. Check whether the trigger mode in the trigger mode menu is in normal or single shot and whether the trigger level is out of the waveform range.
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Page 67: Maintenance And Cleaning
Normally it is not necessary to change the battery of lithium. If it was necessary to replace her, only qualified personnel can realize this operation. For more information, put in touch with the PROMAX most nearby office or with his distributor. Page 63... - Page 68 USER’S MANUAL. OS-782 02-2010 Page 64...
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