Rigol DP711 Programmable Linear DC Power Supply User Manual

1. Introduction

The Rigol DP711 is a single-channel programmable linear DC power supply designed for various applications requiring a stable and reliable power source. This device provides a maximum output of 30 V and 5 A, with a total power output of up to 150 W. Key features include low ripple and noise, excellent load and line regulation, and comprehensive protection functions.

This manual provides essential information for the safe and efficient operation, setup, maintenance, and troubleshooting of your DP711 power supply.

2. Safety Information

Before operating the Rigol DP711, please read and understand all safety instructions to prevent personal injury or damage to the instrument or connected equipment.

• Power Source: Connect the instrument only to a power source that provides the specified voltage and frequency. Ensure the power cord is properly grounded.
• Environment: Operate the device in a dry, well-ventilated area. Avoid exposure to moisture, dust, or corrosive gases.
• Ventilation: Do not block the ventilation openings on the instrument. Ensure adequate airflow to prevent overheating.
• Overvoltage/Overcurrent: Do not exceed the specified voltage and current limits of the device or the connected load. The DP711 includes overvoltage, overcurrent, and overtemperature protection.
• Power-On Transients: Be aware that some users have reported voltage transients on the output terminals during power-on. It is recommended to connect sensitive loads only after the power supply has stabilized and the output is enabled.
• Servicing: Refer all servicing to qualified service personnel. Do not attempt to open or repair the instrument yourself.

3. Setup

3.1 Unpacking and Inspection

Carefully unpack the instrument and check for any signs of damage during transit. If any damage is found, contact your dealer immediately.

Verify that all items listed below are included in the package:

• 1 x Rigol DP711 Programmable Linear DC Power Supply
• 1 x Power Cord
• 1 x Fuses
• 1 x Quality Certificate
• 1 x Certificate Of Calibration

3.2 Product Overview

Familiarize yourself with the front and rear panels of the DP711 power supply.

Figure 1: Front Panel of the Rigol DP711. Shows the 3.5-inch TFT-LCD display, control buttons (System, Memory, Timer, On/Off, Number pad, Navigation, OK), rotary knob, and output terminals.

The front panel features a 3.5-inch TFT-LCD display for clear readings and settings, a rotary knob for precise adjustments, and various buttons for system control, memory functions, timer settings, and output control. The output terminals are located at the bottom front for easy access.

Figure 2: Rear Panel of the Rigol DP711. Displays the AC input, fuse holder, AC selector switch, RS-232 port, and cooling fan.

The rear panel includes the AC power input, fuse holder, an AC selector switch for different input voltages (100V, 120V, 220V, 240V), an RS232 interface for remote communication, and a cooling fan.

3.3 Initial Power-Up

1. Voltage Selection: Before connecting the power cord, ensure the AC selector switch on the rear panel is set to match your local mains voltage (100V, 120V, 220V, or 240V).
2. Fuse Check: Verify that the correct fuse is installed in the fuse holder on the rear panel, corresponding to the selected AC voltage.
3. Power Connection: Connect the supplied power cord to the AC input on the rear panel and then to a grounded AC power outlet.
4. Power On: Press the 'POWER' switch located on the front panel to turn on the instrument. The display will illuminate, and the system will perform a self-test.

4. Operating Instructions

4.1 Setting Voltage and Current

1. Select Parameter: On the front panel display, use the navigation keys (up/down/left/right arrows) to select the voltage (V) or current (A) parameter you wish to adjust. The selected parameter will be highlighted.
2. Adjust Value: Use the rotary knob to adjust the value. Turning the knob clockwise increases the value, and counter-clockwise decreases it. For fine adjustments, press the 'Number' button and use the numeric keypad to enter a precise value, then press 'OK'.
3. Confirm Setting: Once the desired voltage or current limit is set, press the 'OK' button to confirm.

4.2 Enabling/Disabling Output

To enable or disable the power output to the terminals, press the 'On/Off' button on the front panel. When the output is enabled, the 'Output ON' indicator will illuminate on the display. When disabled, the output terminals are disconnected from the power supply circuitry.

4.3 Using Memory Functions

The DP711 allows you to save and recall frequently used voltage and current settings.

• Save: Set the desired voltage and current. Press the 'Memory' button, then use the navigation keys to select a memory location (e.g., M1-M9). Press 'OK' to save.
• Recall: Press the 'Memory' button, use the navigation keys to select the desired memory location, then press 'OK' to recall the saved settings.

4.4 Timer Function

The 'Timer' button allows you to set a timed output operation. Refer to the on-screen menu after pressing 'Timer' for specific settings and options.

4.5 Front Panel Locking

To prevent accidental changes to settings, the front panel can be locked. Press and hold the 'System' button for a few seconds to toggle the lock function. A lock icon will appear on the display when activated.

5. Maintenance

5.1 Cleaning

To clean the instrument, disconnect the power cord and use a soft, damp cloth. Do not use abrasive cleaners or solvents that could damage the casing or display. Ensure no liquid enters the instrument.

5.2 Fuse Replacement

If the instrument does not power on, the fuse may need replacement. Disconnect the power cord. Locate the fuse holder on the rear panel, twist to open, and replace the fuse with one of the same type and rating (e.g., 100V/120V: T5A 250Vac; 220V/240V: T2.5A 250Vac). Ensure the new fuse matches the selected AC voltage.

5.3 Ventilation

Regularly check the ventilation openings on the sides and rear of the unit for dust accumulation. Keep these areas clear to ensure proper cooling and prevent overheating.

Figure 3: Side view of the Rigol DP711, highlighting the ventilation grilles for cooling.

6. Troubleshooting

• No Power:
  • Check if the power cord is securely connected.
  • Verify the AC selector switch on the rear panel matches the local mains voltage.
  • Inspect and replace the fuse if blown (refer to Section 5.2).
• No Output:
  • Ensure the 'On/Off' button is pressed and the output is enabled (indicator light on).
  • Check if the voltage or current limits are set too low.
  • Verify that the overvoltage (OVP) or overcurrent (OCP) protection has not been triggered. Adjust settings if necessary.
• Incorrect Readings:
  • Ensure proper connection of the load to the output terminals.
  • Verify the measurement equipment is calibrated and functioning correctly.
• Unstable Output / Transients:
  • As noted in Section 2, the unit may exhibit brief voltage transients during power-on. Allow the unit to stabilize before connecting sensitive loads.
  • Ensure the load is appropriate for the power supply's specifications.

7. Specifications

The following table outlines the key technical specifications for the Rigol DP711 Programmable Linear DC Power Supply.

8. Warranty and Support

The Rigol DP711 Programmable Linear DC Power Supply comes with a Quality Certificate and a Certificate of Calibration, ensuring its performance and reliability. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact Rigol customer support.

For technical assistance, service, or inquiries regarding your product, please visit the official Rigol website or contact their authorized service centers. Always provide your model number (DP711) and serial number when seeking support.