UNI-T UPO2000HD Series High-Resolution Oscilloscopes

2.1. General Inspection

It is recommended to inspect the instrument following these steps before using the UPO2000HD series oscilloscopes for the first time:

1. Check for Damages caused by Transport: If the packaging carton or foam plastic cushions are severely damaged, contact the UNI-T distributor immediately.
2. Check Accessories: Check the appendix for the list of accessories. If any are missing or damaged, contact UNI-T or local distributors.
3. Machine Inspection: If the instrument appears damaged, not working properly, or fails the functionality test, contact UNI-T or local distributors. If the equipment is damaged due to shipping, keep the packaging and notify the transportation department and UNI-T distributors. UNI-T will arrange maintenance or replacement.

2.2. Before Use

To perform a quick verification of the instrument's normal operations, follow these steps:

1. Connecting to the Power Supply: Connect the power supply using the provided power line or another power line that meets local country standards. When the power switch [power-symbol] on the rear panel is not open, the power soft indicator is extinguished. When the power switch [power-symbol] is open, the power soft indicator illuminates red. Press the soft switch key to enable the oscilloscope. The voltage range and frequency requirements are as follows:

   Voltage Range	Frequency
   100 V-240 VAC (fluctuant: ±10%)	50 Hz/60 Hz
   100 V-120 VAC (fluctuant: ±10%)	400 Hz

2. Boot Check: Press the power soft switch key [power-symbol]. The indicator should change from red to green. The oscilloscope will display a boot animation and then enter the normal interface.
3. Connecting Probe: This oscilloscope provides 2 compensating signal probes. Connect the BNC of the probe to the BNC of oscilloscope's CH1. Attach the probe tip to the "probe compensating signal connection clip" and connect the ground alligator clip to the ground terminal of the compensating signal connection clip. The output of the compensating signal connection clip has an amplitude of approximately 3 Vpp with a default frequency of 1 kHz. A diagram shows the probe compensating signal connection clip and ground terminal.
4. Function Check: Press the AUTO key. A square wave (amplitude 3 Vpp, frequency 1 kHz) should appear on the screen. Repeat step 3 to check all channels.
5. Probe Compensation: When a probe is connected to any input channel for the first time, this step might be needed to match the probe and input channel. Uncompensated probes can lead to measurement errors. Follow these steps for probe compensation:
   • Set the attenuation coefficient in the probe menu to 10x and set the probe switch to 10x. Connect the oscilloscope probe to CH1. If using the probe's hook tip, ensure stable contact. Connect the probe to the "probe compensation signal connection clip" and the ground alligator clip to the ground terminal of the probe compensating signal connection clip. Open CH1 and press the AUTO key.
   • View the displayed waveform. The figure shows examples of "Excessive Compensation", "Correct Compensation", and "Insufficient Compensation".
   • If the displayed waveform resembles "Insufficient Compensation" or "Excessive Compensation", use a non-metallic screwdriver to adjust the probe's variable capacitance until the display matches the "Correct compensation" waveform.

   Warning: To avoid electric shock when measuring high voltage, ensure the probe insulation is in good condition and avoid physical contact with any metallic part of the probe.

2.3. Front Panel

The front panel of the UPO2000HD series oscilloscope features the following:

① Probe compensation signal connection terminal and ground terminal: Connect the BNC end of the probe to the BNC connector on Channel 1. Attach the probe tip to the "Probe Compensation Signal Terminal," and connect the probe's ground alligator clip to the "Ground Terminal." This setup outputs the oscilloscope's internal signal. Refer to the "Before Use - Connecting the Probe" section.

② Analog channel input terminal: Connect the oscilloscope probe or BNC cable to these BNC connectors to input a signal.

2.4. Rear Panel

The rear panel of the UPO2000HD series oscilloscope features the following:

2.5. Operation Panel

2.6. User Interface

The user interface of the UPO2000HD series oscilloscope is designed for ease of use and provides comprehensive information.

2.7. Help System

The help system provides information about function keys and menu keys on the front panel. Access the help system by:

• In the Home menu, clicking the help icon [?] to open the help menu.
• In each function menu popup, clicking the help icon [?] on the top right to open the relevant help menu.

The help screen is divided into "Help Options" (left) and "Help Display Area" (right). Selecting a help option displays content on the right.

Cursor Usage for Measurement:

• Use cursors to measure X-axis (time) and Y-axis (voltage) values of a waveform. Connect the signal and obtain a stable display before using cursors.
• Source: Select the channel to be measured.
• Time: Select the time mode.
• Voltage: Select voltage mode.
• Screen: Select the screen mode.

Time measurement method: Adjust the Multipurpose knob to move the vertical cursor AX. Press the knob to switch to cursor BX. Adjust BX similarly. The row with X indicates time; the row with the channel label indicates amplitude.

Voltage measurement method: Adjust the Multipurpose knob to move the horizontal cursor AY. Press the knob to switch to cursor BY. Adjust BY similarly.

Screen measurement method: Adjust the Multipurpose knob to move the cursor position on the screen and press the knob to switch and adjust the cursor.

(1) Multipurpose rotary knob

For time and voltage parameters, select the parameter and rotate the Multipurpose rotary knob on the front panel to enter the value.

(2) Touch screen

Once a parameter or text field is selected, double-click to open the virtual keyboard for entering parameter values, label names, or file names.

• Enter character string: Use the character keyboard to enter a string when naming files or folders.
• Text field: Input letters, numbers, and special characters (max 16 characters). Keys include Clear, Caps, Tab, Shift, Arrow keys, Space, Backspace, and Enter.

(3) Enter numeric value

When setting or editing a parameter, use the numeric keyboard:

1. Click the number or unit to enter.

After entering values and selecting units, the numeric keypad closes automatically. The user can also manually close it by clicking the confirm key. The numeric keypad allows operations like deleting values, setting max/min values, setting default values, clearing the input field, and moving the cursor.

Enter binary, hexadecimal system value: Use the numeric keypad for binary or hexadecimal values during decoding trigger for data and address settings.

After entering values and pressing "Ok", the numeric keypad closes, completing the parameter setting. Operations include moving the cursor, setting max/min values, setting default values, clearing the input field, and deleting values.

(1) Tap

Use one finger to tap an icon or word on the screen. Tap gestures can be used for:

• Tapping the menu display to set up.
• Tapping the function icon to open a function.
• Tapping the pop-up numeric keyboard to set parameters.
• Tapping the virtual keyboard to set label names and file names.
• Tapping a message to close a pop-up window.
• Tapping other windows to set up.
• Tapping a message to reveal a help key, which opens the corresponding function's help menu.

(2) Pinch

Squeeze two fingers together or apart to zoom the waveform in or out. Pinching fingers together and sliding apart zooms out; spreading fingers apart and pinching them together zooms in.

• Adjust the horizontal time base by pinching horizontally.
• Adjust the vertical time base by pinching vertically.

(3) Drag

Use one finger to press and drag a selected item to a desired position.

• Drag the waveform to change its position.
• Drag the window to change its position.
• Drag the cursor to change its position.

(4) Rectangle Drawing

Open the HOME menu and click "Rectangle Drawing" to enable the function. Drag your finger to draw a rectangle on the screen. A menu will appear allowing selection of "Region A", "Region B", "Intersection", or "Non-intersect". Drag from bottom right to top left to draw the trigger area.

Select "Zone A":

• Draw the trigger zone A.
• Open the trigger zone A.
• Open "Zone Trigger" menu.

Select "Zone B":

• Draw the trigger zone B.
• Open the trigger zone B.
• Open "Zone Trigger" menu.

Note: Click "rectangle drawing" to switch between rectangle drawing and operating waveform modes. The icon indicates "rectangle drawing" mode is enabled; the icon indicates "operating waveform" mode is enabled.

(1) Custom Programming

Perform programming control through SCPI. Refer to the "UPO2000HD Series High-Resolution Oscilloscopes-Programming Manual" for detailed descriptions.

(2) PC Software Control (Instrument manager)

Use PC software to remotely control the oscilloscope. The instrument manager displays the oscilloscope screen in real-time and allows mouse control. Download the PC software from the UNI-T official website (https://www.uni-trend.com).

Operating steps:

• Setup communication between the instrument and a PC.
• Open the instrument manager software and search for the instrument source.
• Right-click to open the oscilloscope and operate the instrument manager for remote control. Refer to "Instrument Manager-User's Manual" for details. This device supports remote control via USB, LAN, and WiFi interfaces using the SCPI command set.

(3) Web Control

Once connected to the network, access a web page via the IP address. After logging in with username and password, control the device. The Web Control feature displays the instrument's screen interface in real-time and supports web access from PCs, smartphones, and iPads for both internal and external remote control.

(1) Oscilloscope remains on a black screen without display when pressing the power soft key.

• Check if the power plug is properly connected and the power supply is normal.
• Check if the power switch is turned on. The power soft key should be green when enabled, and the oscilloscope should make an active sound with a normal relay rattle.
• If the relay sounds, press the Default key and "Yes" to reset. If the oscilloscope returns to normal, the backlight brightness might be too low.
• Restart the oscilloscope after completing the above steps.
• If the product still does not work properly, contact the UNI-T Service Center.

(2) Waveform does not appear on the screen after signal acquisition.

• Check probe and DUT connection.
• Check if the signal output channel is open.
• Check if the signal connecting line is connected to an analog channel.
• Check for DC offset in the signal source.
• Plug out the signal and check if the baseline is within the screen range. Perform self-calibration if needed.
• If the product still does not work properly, contact the UNI-T Service Center.

(3) Measured voltage amplitude is 10 times larger or smaller than actual value.

Check if the channel probe attenuation coefficient settings match the used probe attenuation rate.

(4) Waveform display is unstable.

• Check if trigger settings in the trigger menu are consistent with the actual signal input channel.
• Check the trigger type. General signals should use "Edge" trigger for stable waveform display.
• Try changing trigger coupling to HF rejection or LF rejection to filter noise that interferes with the trigger.

(5) No waveform displayed after pressing the Run/Stop key.

• Check if the trigger mode is "Normal" or "Single" and if the trigger level exceeds the waveform range.
• If the trigger mode is normal or single and the trigger level is in the center, set the trigger mode to Auto.
• Press the Autoset key to automatically complete the settings.

(6) Waveform refresh is very slow.

• Check if the acquisition method is set to "Average" with large average times.
• Check if the memory depth is maximum.
• Check if the trigger holdoff is large.
• Check if it is normal trigger with a slow time base.

These issues can lead to slow waveform refresh. Restoring factory settings is recommended for normal waveform refresh.

Headquarter

UNI-TREND TECHNOLOGY (CHINA) CO., Ltd.
Address: No.6, Industrial North 1st Road, Songshan Lake Park, Dongguan City, Guangdong Province, China
Tel: (86-769) 8572 3888

Europe

UNI-TREND TECHNOLOGY EU GmbH
Address: Affinger Str. 12
86167 Augsburg Germany
Tel: +49 (0)821 8879980

North America

UNI-TREND TECHNOLOGY US INC.
Address: 3171 Mercer Ave STE 104, Bellingham, WA 98225
Tel: +1-888-668-8648