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User Manual
D750
DC Power Supply
Chapter1 General Information
1.1 User Manual Content
This user's manual contains the operating instructions, installation instructions and
specifications of the D750 power supplies. The instructions refer to the standard power
supplies, including the built-in RS232/485/IEEE serial communication.
1.2 Introduction
1.2.1 General description
D750 high performance programmable DC power supplies. The D750 is power factor
corrected and operates from worldwide AC voltage range continuously. Output voltage and
current are continuously displayed and LED indicators show the complete operating status
of the power supply. The Front panel controls allow the user to set the output parameters,
the protection levels (Over-Voltage protection, Under-Voltage limit and Foldback) and
preview the settings. The rear panel includes the necessary connectors to control and
monitor the power supply operation by remote analog signals or by the built-in serial
communication (RS232/485). GPIB programming and Analog programming/monitoring
1.2.2 Features and options
* Constant Voltage / Constant Current with automatic crossover.
* Active Power Factor correction.
* Universal Input Voltage 85~265Vac, continuous operation.
* Embedded Microprocessor Controller.
* Built in RS232/485 Interface.
* Voltage & Current high resolution adjustment by digital encoders.
* High accuracy programming/readback-16 bit.
* Software Calibration (no internal trimmers / potentiometers).
* Last Setting Memory.
* Independent Remote ON/OFF and Remote Enable/Disable.
* Parallel operation (Master/Slave) with Active current sharing.
* Remote sensing to compensate for voltage drop of power leads.
* External Analog Programming and Monitoring standard (0-5V or 0-10V, user selectable).
* Cooling fan speed control for low noise and extended fan life.
* Zero stacking-no ventilation holes at the top and bottom surface of the power supply.
* GPIB interface (SCPI compatible).
1.2.3 Multiple output power system
D750 can be configured into a programmable power system of up to 31 units using the
built-in RS232/RS485 communication port in the power supply and the RS485 linking cable
provided with each power supply.
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