Promax OS-782 User Manual
OS-782
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
DIGITAL OSCILLOSCOPE & MULTIMETER
- 0 MI1737 -
SAFETY NOTES
Read
the user’s manual before using the equipment, mainly " SAFETY
RULES " paragraph.
The symbol
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.
on the equipment means "SEE USER’S MANUAL". In
User’s Manual. OS-782
TABLE OF CONTENTS
1 GENERAL.................................................................................................................. 1
Description .......................................................................................................... 1
1.1
1.2
Specifications Oscilloscope.................................................................................2
1.3
Specifications Multimeter .................................................................................... 5
SAFETY RULES........................................................................................................ 7
2
2.1
General................................................................................................................7
2.2
Descriptive Examples of Over-Voltage Categories.............................................9
DESCRIPTION FOR FRONT PANEL AND KEYS ..................................................11
3
4
USING THE OSCILLOSCOPE ................................................................................ 13
4.1
Power-Up the oscilloscope................................................................................ 13
4.2
Charging the oscilloscope.................................................................................13
4.3
Oscilloscope Operation Window ....................................................................... 14
Navigating a Menu ............................................................................................ 16
4.4
4.5
Manually Setting the Vertical System, Horizontal System and Trigger Position17
4.6
Resetting the Oscilloscope................................................................................ 20
4.7
Displaying an Unknown Signal with Auto Set ...................................................20
4.8
Automatic zero-returning of trigger horizontal position and trigger level position.....21
4.9
Automatic Measurements..................................................................................21
4.10
Freezing the Screen .......................................................................................... 22
4.11
Setting the Vertical CH1 and CH2.....................................................................23
4.11.1
Setting the Channel Coupling .....................................................................24
4.11.2
Make Open and Close Settings on Channel...............................................25
Adjusting the Probe Scale........................................................................... 25
4.11.3
4.11.4
4.12
4.13
4.14
4.15
4.16
4.17
4.18
4.19
4.20
4.21
4.22
4.23
4.24
Setting of Inverted Waveform ..................................................................... 26
MATH function “MATH” ..................................................................................... 26
Setting the Trigger System. TRIGGER Function............................................... 27
Triggering Control.............................................................................................. 28
4.14.1
Edge triggering............................................................................................ 29
Description..............................................................................................................29
4.14.2
Video triggering...........................................................................................30
Acquiring Mode Setting ..................................................................................... 33
Display Setting ..................................................................................................33
Settings...................................................................................................................33
4.16.1
Display Style ...............................................................................................34
4.16.2
Persistence .................................................................................................34
4.16.3
XY mode .....................................................................................................35
Waveform Saving Setups..................................................................................35
Function Setting Menu ......................................................................................36
Making Automatic Measurements.....................................................................37
Setting the Cursor Measurements..................................................................... 40
Autoscale........................................................................................................... 42
System State Menu........................................................................................... 45
Horizontal axis setting. HORIZONTAL function ................................................46
Data transmission to the PC.............................................................................. 47
English
User’s Manual. OS-782
USING THE MULTIMETER.....................................................................................49
5
5.1
About this chapter ............................................................................................. 49
5.2
Making Meter Connections................................................................................49
5.3
Multimeter Operation Window...........................................................................49
5.4
Making Multimeter Measurements.................................................................... 51
Measuring Resistance Values ....................................................................51
5.4.1
5.4.2
Making a Diode Measurement. ................................................................... 51
5.4.3
On-off test ...................................................................................................52
5.4.4
Making a Capacitance Measurement .........................................................53
5.4.5
Making a DC voltage Measurement (VDC)................................................. 54
5.4.6
Making a AC voltage Measurement (VAC)................................................. 54
5.4.7
Making a DC current Measurement (AAC) .................................................55
5.4.8
Making an AC Current Measurement .........................................................57
5.5
Freezing the Readings. .....................................................................................58
5.6
Taking a relative measurement .........................................................................59
Selecting automatic/manual range adjustment ................................................. 60
5.7
TROUBLE SHOOTING............................................................................................ 61
6
MAINTENANCE AND CLEANING........................................................................... 63
7
7.1
Basic maintenance ............................................................................................63
Cleaning ............................................................................................................63
7.2
7.3
Storage of oscilloscope .....................................................................................63
7.4
Substitution of the battery of lithium. .................................................................63
USER’S MANUAL. OS-782
Oscilloscope & Multimeter
Digital Storage
OS-782
1 GENERAL
1.1 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
is very useful to measure the electrical magnitudes and to repair electronic equipments
given its large diversity of functions, which causes that it become an useful tool in
laboratories, as well as for R&D and training activities.
The measurement carried out by the equipment appears on a hi-resolution LCD
with backlight.
Their basic characteristics in each one of their operating modes are:
• Two-channels oscilloscope with bandwidth of 20 MHz.
• Sampling rate of 100 MS/s.
• Trigger: TV and edge.
• 20 automatic measurements modes.
• Auto-scale function.
• Memory depth of 6k points by channel.
• USB port.
• Digital Multimeter of 3 ¾ for measurements of R, V, A and C.
• AC adapter and LI-ion battery.
• Display LCD colour of 3.8 " with backlight, 320x240 pixels.
• Vertical and horizontal cursors.
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USER’S MANUAL. OS-782
1.2 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.
• The instrument should operate continuously for more than 30 minutes under
be up to.
SAMPLING
Sampling modes Normal sampling.
Sampling rate 100 MSa/s.
INPUT
Input coupling DC, AC, Ground.
Input impedance 1MΩ ± 2 % connected in parallel with 20pF
Probe attenuation coefficient 1x, 10x, 100x, 1000x.
Max. Input voltage 400V (peak).
Channel delay time(typical) 150 ps.
HORIZONTAL
Sampling rate range 10S/s~100MS/s.
Waveform interpolation (sin x)/x.
Record length 6 K points on each channel.
Scanning speed range (S/div) 5ns/div~100 s/div, stepping in the “1- 2.5 - 5“.
Sampling rate and relay time
accuracy ±100ppm(any time interval which is equal to or
Time interval (T) measurement
Accuracy full bandwidth l Single: ± (1 sampling interval time+100 ppm
the specified operating temperature.
• If the operating temperature range of variation is up to or larger than 5
Celsius degrees, the system function menu must be opened to make the
system perform a “self - calibration” procedure.
Except those specifications marked with the word “Typical”, all specifications can
Peak detection.
Average value.
± 5 pF.
larger than 1ms).
reading+0.6 ns)>average 16: ±(1 sampling
interval time +100 ppm reading+0.4 ns).
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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.
Single bandwidth Ancho de banda completo.
Low frequency response ≥5Hz (at the BNC ).
(coupling, AD, -3dB
Rise time ≤17.5ns.
(typical one at the BNC)
DC gain accuracy ±5 %.
DC measurement accuracy The voltage difference (V) between any two.
(average value sampling mode) points on the waveform after averaging the
captured waveforms more than16: ±(5%
reading + 0.05 divisions).
Trigger
Trigger sensitivity (Edge triggering)
DC coupling CH1 and CH2: 1div(DC~ full bandwidth).
AC coupling Same as the DC coupling when it is equal to or
larger than 50Hz.
Triggering lever range ±6 divisions from the screen center.
Triggering level accuracy ±0.3 divisions
(typical) which is applicable to
the signal with rise and fall time
equal to or longer than 20ns
Trigger displacement 655 divisions for pre-triggering and 4 divisions
for post- triggering.
Trigger Holdoff range 100 ns~10 s.
Make a 50% level setting (Typical). Operation with the input signal frequency equal
to or larger than 50Hz.
Trigger sensitivity (Video 2 divisions of peak-to-peak value.
Triggering and typical mode)
Signal system and line/field Support the NTSC, PAL and SECAM frequency
(Video triggering mode) broadcasting systems
of any field or line frequency.
Measurement
Cursor measurement Voltage difference (∆V) and time difference
(∆T) between cursors (∆V).
Auto measurement Peak-to-peak value, average value, root mean
square value, Frequency, cycle period, Vmax,
Vmin,Vtop, Vbase, Vamp, Overshoot, Preshoot,
RiseTime, Fall Time, +Width, -Width, +Duty,
-Duty, Delay A B and Delay B A.
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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
Dimensions 180 (W) × 115 (H) × 40 (D) mm.
Weight 0.645 kg.
Power supply
Internal 7.4 V Li-Ion Built-in Rechargeable battery.
External Means network adapter included. For Europe
and other countries.
Input 100-240 VAC 50 Hz / 6W.
Working environment
Temperature Operation 0 to 50 °C.
Power adapter 0 to 40 °C.
Storage Temperature -20 to +60 °C.
Humidity in operation
0 to 10 °C no condensation.
10 to 30 °C 95 %
30 to 40 °C 75 %
40 to 50 °C 45 %
Humidity in storage
0 to 10 °C no condensation
ACCESSORIES
Two 1:1 (10:1) passive oscilloscope probes of 1.2 meters long SA016 x1 x10.
A pair of test leads of multimeter PP013.
One communication cable for USB port.
A measuring extension module for small current
A measuring extension module for small capacitance.
One AC power adapter for Europe and other countries (AL782)
A User Manual.0 MI1452
An operational optical disk.
A software CD.
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USER’S MANUAL. OS-782
1.3 Specifications Multimeter
Maximum tension of the points of measure to land 400V CAT II
Voltage (VDC)
Input Impedance: 10MΩ
Range Accuracy Resolution
400 mV
4.000 V 1 mV
40.00 V 10 mV
400.0 V
Input protection 1000 VDC or peak AC
Voltage (VAC)
Input Impedance: 10M Ω.
Frequency range: from 40 Hz to 400 Hz.
Display: Virtual value of the sine wave.
Range Accuracy Resolution
4.000 V 1 mV
40.00 V 10 mV
400.0 V
Input protection 750 VDC or peak AC
Direct Current (ADC)(1)
Range Accuracy Resolution
40.00 mA ± 1% ± 1 digit 10 uA
400.0 mA ± 1.5% ± 1 dígito 100uA
20A(2)
± 1% ± 1 digit
± 1% ± 3 digits
± 3% ± 3 dígitos 10 mA
100 µV
100 mV
100 mV
Alternating Current (AAC) (1)
Range Accuracy Resolution
40.00 mA ± 1.5% ± 3 digits 10 uA
400.0 mA ± 2% ± 1 digit 100 uA
20A(2)
(1) ATENTION: Not to overcome in any case 400mA or 20A respectively.
(2) With the extension module of measure of current.
± 5% ± 3 digits 10 mA
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USER’S MANUAL. OS-782
Resistance
Range Accuracy Resolution
400.0 Ω ± 1% ± 3 digits 0.1 Ω
4.000k Ω 1 Ω
40.00k Ω 10 Ω
400.0k Ω 100 Ω
4.000M Ω
40.00M Ω ± 1.5% ± 3 digits 10 KΩ
± 1% ± 1 digit
1 KΩ
Capacitance
Range Accuracy Resolution
51.20 nF 10pF
512.0 nF 100pF
5.120 uF 1nF
51.20 uF 10nF
100 uF
± 3% ± 3 digits
100nF
Diode
Voltage reading: 0 V ~ 1.5 V
On-off Test
You can a beep sound when the on-resistance is less than 50Ω.
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USER’S MANUAL. OS-782
2 SAFETY RULES
2.1 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.
* This equipment can be used in Overvoltage Category II installations and Pollution
Degree 2 environments.
The adapter of net can be used only in interiors.
* When using some of the following accessories use only the specified ones to
ensure safety
Power adapter.
Test leads (Multimeter)
Measurement probes (Oscilloscope)
* The negative of measurement like Osciloscope is common to the negative
potential of the conector of input / output of information.
* El negative of measurement of the channels of the osciloscopio is common.
* On having effected measurements to disconnect the cables that are not in use.
* Revise the condition of test leads before the utilization.
* Observe all specified ratings both of supply and measurement.
* Remember that voltages higher than 70 V DC or 33 V AC rms are dangerous.
* Use this instrument under the specified environmental conditions.
* The user not authorized to carry out the following maintenance operations.
Any change on the equipment should be carrier out byqualified personnel.
* Do not obstruct the ventilation system.
* Follow the cleaning instructions described in the Maintenance paragraph.
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USER’S MANUAL. OS-782
* Symbols related with safety:
DIRECT CURRENT
ALTERNATING CURRENT
DIRECT AND ALTERNATING
(Class II Protection)
(Risk of electric shock)
GROUND TERMINAL
PROTECTIVE CONDUCTOR
FRAME TERMINAL
EQUIPOTENTIALITY
ON (Supply)
OFF (Supply)
DOUBLE INSULATION
CAUTION
CAUTION REFER TO MANUAL
FUSE
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2.2 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
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USER’S MANUAL. OS-782
3 DESCRIPTION FOR FRONT PANEL AND KEYS
See the following Figure 1 :
English
Description:
1. Power adapter jack.
2. USB port.
3. Backlight switch.
4.
5. A: Multimeter current measurement key.
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: Power switch.
Figure 1.- Front Pannel.
USER’S MANUAL. OS-782
6. V: Multimeter voltage measurement key.
7. R: Multimeter resistance, triode, On/Off and capacitance measurement key.
8. OSC ◄: Oscilloscope left-direction adjustment key.
9. OSC ►: Oscilloscope right-direction adjustment key.
10. OSC OPTION: Oscilloscope setting key.
With the combination application of the four keys “OSC ◄”, “OSC ►”, “OSC
▲” y “OSC ▼”, the users can make the following settings circularly by
pressing OSC OPTION. The settings include: Voltage Unit Scale of Channel 1
(CH1 VOL); Voltage Unit Scale of Channel 2 (CH2 VOL); Primary Timebase
(TIME BASE), zero point position of channel 1(CH1 ZERO), zero point
position of channel 2(CH2 ZERO), trigger horizontal position (TIME) and
trigger level position (TRIG).
• When performing Waveform Calculation, the users can also adjust and
calculate the Display Multiplying Factor of waveform (CHM VOL) and
the vertical display position (CHM ZERO).
• In cursor measurement mode, the users can adjust the positions of
Cursor 1 (V1 or T1) and Cursor 2 (V2 or T2).
11. OSC ▼: Oscilloscope display downward adjustment key.
12. OSC ▲: Oscilloscope display upward adjustment key.
13. OSC/DMM: Operation mode switching key between oscilloscope and
multimeter.
14. AUTOSET: Oscilloscope “AUTOSET” setting key.
• Under the Multimeter Mode, when performing the current or voltage
measurement, you can make a measurement switch between AC and
DC with this key pressed; when performing the resistance
measurement, you can select resistance, diode, On/Off or capacitance
measurement circularly with this key.
• While this key is used for auto setting under the oscilloscope operation
mode.
15. RUN/STOP: key for running or stopping the operation.
16. MENU ▼: Choose the lower item on the menu list.
17. MENU: Show / Hide the menu.
18. MENU ▲: Choose the upper item on the menu list.
19. F1~F5: Switch or Adjust options for each menu.
20. BCN input connectors for oscilloscope channels: CH1 and CH2.
21. Multimeter input terminals: Three
terminals banana-type; Ma/A, COM, V/Ω/C
and two socket terminals for capacitance measurement.
22. Probe compensation output. Test signal of 5 Vpp and 1 kHz frequency.
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USER’S MANUAL. OS-782
4 USING THE OSCILLOSCOPE
4.1 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 “
The instrument then performs Selfchecking after power on. A greeting window
and a sentence “press any key to continue” will display on the screen when the system
finishes selfchecking.
The users can press any key to enter the measuring function.
The oscilloscope is powered up in its last setup configuration.
“.
4.2 Charging the oscilloscope
The lithium battery is possibly not charged when delivery. To make the battery
with enough electric quantity, it must be charged for 4 hours (the test tool must be
turned off during charging). The battery can supply power for 4 hours after being
charged completely.
When supplying power by using the battery, a battery indicator is displayed on the
top of the screen to show the consumption condition of electric quantity. The symbols
that are possibly appear include
only be used for about 5 minutes. To charge the battery and power the instrument,
connect the oscilloscope using a power adapter according to Figure 1 to charge the
battery. The charging speed can be increased by turning off the test tool.
To avoid superheat of battery during charging, the environment temperature is
NOTE
not allowed to exceed the permissible value given in technical specification.
NOTE:
No hazard will occur even connecting the charger for a long time, e.g. during a
whole weekend. The instrument can automatically switch to slowly charging
status.
, , and , where shows that the battery can
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USER’S MANUAL. OS-782
4.3 Oscilloscope Operation Window
See the following figure 2 :
Figure 2.- Oscilloscope Operation Window.
Description
1. Battery electric quantity indicating symbols, including:
, , y .
2,3 Measurement indicators 1 and 2. Diverse parameters can be shown:
Frequency “f”, peak value (Up), V (average value) etc…
Two parameters from one channel or one parameter from each channel can
be shown.
4. The pointer indicates the horizontal triggering position.
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USER’S MANUAL. OS-782
5. This reading gives the Time Difference between the horizontal triggering
6. The trigger state indicates the following information.
position and the screen centerline. It reads zero when the pointer is in the
center of the screen.
Auto: The oscilloscope is working in the automatic mode and displaying
the waveform under the non-trigger state.
Trig’d: The oscilloscope has detected a trigger and collecting the
information generated after the trigger.
Ready: All pre-triggered data have been captured and the oscilloscope has
been ready to receive trigger signals.
Scan: The oscilloscope can gather and display the waveform data
continuously in scanning mode.
Stop: The oscilloscope has stopped collecting the waveform data.
7. The green pointer shows the trigger voltage level.
8. Oscilloscope main menu. Pressing the “MENU button this menu will be
visualised/hide.
9. Menu setting options: There are different setting options for different menus.
10. It reads the value of trigger voltage level.
11. The display shows the trigger signal source.
12. The reading gives the value of primary time base.
13. These graphics present the coupling modes of channel CH2. The graphic “∼”
indicates AC, the graphic “—” indicates DC.
14. It shows the vertical V/div value for channel CH2.
15. These graphics show the coupling mode of CH1, among which the graphic “∼”
express indicates AC, the graphic “—” indicates DC.
16. It shows the vertical V/div value for channel CH1.
17. The blue indicator shows the CH2 zero position. If channel CH2 is
deactivated, this indicator disappears
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USER’S MANUAL. OS-782
18. OSC OPTION indications: Whenever you press the OSC OPTION they are
shown parameters to be modified by means of the cursor keys: W, X, S and
T.
19. The red indicator shows the CH1 zero position. If channel CH1 is deactivated,
this indicator disappears.
20. Waveform display area. Red waveform represent CH1, blue waveform
represent CH2.
4.4 Navigating a Menu
The following example shows how to use the tool’s menus to select a function, as
shown in the following figure.
1. Press the MENU key to show the Functions Menu in the right side of the display
and the corresponding parameters or options in the lower part of the display. In
order to hide the Functions Menu press the MENU key again.
2. Press the MENU S or MENU T key to select different function menus.
3. Press a key from F1 to F5 to modify the diverse parameters of each function.
Figure 3.- The tool’s menus.
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4.5 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. The settings include: Voltage Unit Scale of Channel 1 (CH1 VOL); Voltage
Unit Scale of Channel 2 (CH2 VOL); Primary Timebase (TIME BASE), zero point
position of channel 1(CH1 ZERO), zero point position of channel 2(CH2 ZERO), trigger
horizontal position (TIME) and trigger level position (TRIG).
The following example shows how to use “OSC OPTION” key to make a setting.
1. Press once the “OSC OPTION” key; the following is displayed at the bottom
left side of the screen, as shown in the figure below.
◄/► — Time Base
S/T — CH1 Vol
English
Figure 4.- Voltage Unit Scale of Channel 1.
2. Press the key “OSC S” or “OSC T” to adjust the vertical scale of Channel 1
and press , y “OSC ◄” “OSC ►” to adjust the horizontal time scale.
3. Press “OSC OPTION” once again, the following display is visible at bottom
left side of the screen, as shown in the following figure:
◄/► — Time Base
S/T — CH2 Vol
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