The GPP-3610H/GPP-7250 is a series of programmable DC power supplies designed as adjustable, multifunctional workstations. These devices offer multiple outputs and operate in both constant voltage (CV) and constant current (CC) modes. They are equipped with a 4.3-inch TFT display for clear information presentation and feature digital panel control.
Function Description:
The primary function of the GPP series is to provide a regulated DC power supply with adjustable voltage and current. It can operate in three load modes: Constant Voltage (CV), Constant Current (CC), and Constant Resistance (CR). The power supply automatically transitions between CV and CC operation based on the output current and voltage reaching their set target values.
A unique feature is the Output Waveform Function, which allows users to customize V/I sequential waveform outputs under Source mode and program dynamic loads (below 1Hz) under Load mode. This enables the creation of specific voltage and current patterns for various testing scenarios.
The device also includes advanced functions such as Sequence, Delay, Monitor, and Recorder. The Sequence function allows users to edit and output different voltage waveforms, with a duration range from 1s to infinite and a resolution of 1s. The Delay function is used for outputting a series of pulses at a constant voltage, with editable waveforms and a duration range from 1s to infinite. The Monitor function helps guarantee load status by halting operation based on preset voltage, current, or power conditions, offering output disable, content notice, or audible alarm options. The Recorder function captures live output data for long-term analysis, saving files to internal memory or an external USB flash drive.
For user convenience, the GPP series supports both front and rear panel output, selectable via the panel menu or remote commands. It also offers multiple remote control interfaces, including standard RS-232 and USB, with optional GPIB and LAN connectivity. An external I/O control signal is reserved for user-defined switch control.
Important Technical Specifications:
- Output Rating:
- GPP-3610H: 0 - 36.000V, 0 - 10.0000A
- GPP-7250: 0 - 72.000V, 0 - 5.0000A
- Power Output: 0-100.00W
- Voltage Line Regulation: ≤ 0.01% + 3mV
- Voltage Load Regulation: ≤ 0.01% + 5mV
- Voltage Ripple & Noise: ≤ 1mVrms (5Hz-1MHz)
- Transient Recovery Time: ≤ 100µs (50% load change, minimum load 0.5A)
- Temperature Coefficient: ≤ 300ppm/°C
- Current Line Regulation: ≤ 0.01% + 3mA
- Current Load Regulation: ≤ 0.02% + 3mA
- Current Ripple & Noise: ≤ 2mArms
- Voltage Resolution:
- GPP-3610H: Programming 1mV, Readback 0.1mV
- GPP-7250: Programming 2mV, Readback 0.1mV
- Current Resolution:
- GPP-3610H: Programming 0.2mA, Readback 0.2mA
- GPP-7250: Programming 0.1mA, Readback 0.1mA
- Ammeter Accuracy:
- GPP-3610H: Max. 10.2A
- GPP-7250: Max. 5.2A
- Voltmeter Accuracy:
- GPP-3610H: Max. 36.5V
- GPP-7250: Max. 72.5V
- Setting Accuracy:
- Voltage: ≤ ± (0.03% of reading + 10mV)
- Current: ≤ ± (0.3% of reading + 10mA)
- Readback Accuracy:
- Voltage: ≤ ± (0.03% of reading + 10mV)
- Current: ≤ ± (0.3% of reading + 10mA)
- OVP (Overvoltage Protection): OFF, ON (0.5V-38.0V for GPP-3610H, 0.5V-75.0V for GPP-7250)
- OCP (Overcurrent Protection): OFF, ON (0.05A-10.50A for GPP-3610H, 0.05A-5.50A for GPP-7250)
- OPP (Overload Protection) in Load Mode: Fixed 100W, non-revisable
- Insulation Resistance:
- Between chassis and terminal: 20MΩ or above (DC 500V)
- Between chassis and DC power cord: 30MΩ or above (DC 500V)
- AC Input Voltage Range: 100V/120V/220V/230V ±10%
- Frequency: 50Hz/60Hz
- Fuse Type:
- 100V/120V: T12A/250V
- 220V/230V: T6.3A/250V
- Dimensions: 213 (W) x 145 (H) x 362 (D) mm
- Weight: Approx. 10kg
- Operating Environment: Indoor use, Altitude: < 2000m, Temperature: 0°C to 40°C, Relative Humidity: < 80%, Pollution degree: 2
- Storage Environment: Indoor, Temperature: -10°C to 70°C, Relative Humidity: < 70%
Usage Features:
- Display Modes: Offers up to 4 display types, including normal views with set values and waveforms, to cater to different user information needs.
- Parameter Setting: Digital voltage and current settings are available via key input and an encoder wheel. Arrow keys allow for fine-tuning of values.
- Output Control: Individual ON/OFF buttons for each channel, with the button lighting up when the output is active.
- Memory Functions: 10 groups of save/recall settings, 2 groups of power-on settings, 10 groups for Sequence, 10 for Delay, and 10 for Record.
- Key Lock Function (LOCK): Disables all panel keys except the Output key to prevent accidental changes. An F6 button press unlocks the panel.
- Remote Control: Supports RS-232, USB, GPIB (optional), and LAN (optional) for remote operation. The device automatically locks panel control when a remote connection is established.
- External I/O Control: Programmable external trigger port with 5 input/output terminals and 5 ground terminals for controlling channel ON/OFF, toggling PWR/Load modes, and switching between CC/CV/CR modes under Load.
- Beeper: An alarm buzzer can be turned ON or OFF in the system settings.
Maintenance Features:
- Firmware Upgrading: Allows for firmware upgrades via a USB flash drive (USB2.0/USB3.0, FAT32 file system, 16G MAX). This is typically performed when the system is experiencing failure or for software updates provided by GW Instek.
- Restore Factory Default Settings: Users can restore the device to its non-modifiable factory default settings, including voltage, current, OVP, OCP, display type, mode, tracking, and system settings like beeper, backlight, power on behavior, and output panel.
- Screenshot Operation: The device can capture screenshots of the display and save them as .BMP files to a USB flash drive.
- Fuse Replacement: Instructions are provided for safely replacing the fuse by disconnecting the power cord and using a small screwdriver to access the fuse housing.
- Cleaning: The power supply should be cleaned with a soft cloth dampened in a mild detergent and water solution after disconnecting the power cord. Harsh chemicals like benzene, toluene, xylene, and acetone should be avoided.
- Environmental Guidelines: Important safety guidelines are provided for operation and storage, emphasizing avoiding heavy objects, severe impact, static discharge, blocked cooling fan openings, and direct connection to mains power for measurements. The device is designed for indoor use within specified temperature and humidity ranges.
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