User Manual

ManualsBrandsExtech ManualsIndustrial & ScientificExtech 382280 Precision with Programmable 200 Watt Output DC Power Supply

User's Guide

Programmable DC Power Supply

200 Watt (40 Volts / 5 Amps)

Model 382280

Introduction

Congratulations on your purchase of the Extech 382280 Programmable DC Power

Supply. This 200 watt power supply offers an adjustable 5ADC / 40VDC output plus fixed

outputs (5VDC and 3.3VDC). Programming features include custom over-voltage/current

protection with delay timer, 199-test storage, and automated testing. Careful use of this

power supply will provide years of reliable service.

382280

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Back to the Extech 382280 Product Page

Summary of content (9 pages)

PAGE 1
99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com User's Guide Back to the Extech 382280 Product Page Programmable DC Power Supply 200 Watt (40 Volts / 5 Amps) Model 382280 382280 Introduction Congratulations on your purchase of the Extech 382280 Programmable DC Power Supply. This 200 watt power supply offers an adjustable 5ADC / 40VDC output plus fixed outputs (5VDC and 3.3VDC).
PAGE 2
Specifications Programmed Voltage and Current (after 5-minute warm-up) Range 0 to 40V 0 to 5A Voltage V (C.V.) Current A (C.C.) Resolution 1mV 1mA Accuracy 0.05% ± 9mV 0.2% ± 9mA Voltage and Current Display (Read back) Range 0.1 to 40V 0.05 to 5A Voltage V (C.C.) Current A (C.V.) Resolution 1mV 1mA Accuracy 0.1% ± 12mV 0.2% ± 12mA Display Backlit Dot Matrix (2-line) Display Programmable Voltage Output 0.000 to 40.000VDC Programmable Current Output 0.000 to 5.
PAGE 3
Front Panel Description 1. OPER/STBY: Operation/Standby button. Press to enable/disable the output. When the supply is in the STANDBY mode the output is 0 volts. 2. RECALL: Press to call up stored output sets or to activate Automatic Test Sequencing. 3. STORE: Press to save the present V/A output set to memory. Use the numeric keys (not the arrows) to select a storage location from 000 to 199 and then press ENTER. 4. SEC (Seconds): Press to enter time in seconds. Use the ENTER key to confirm entries. 5.
PAGE 4
Operation Preparation for use 1. Place the supply on a flat level surface. 2. Select the input voltage using the switch on the rear of the supply (see diagram above). 3. Make sure the sides and the back of the unit are not blocked. Leave at least 2” (5 cm) of space for good ventilation. Line Voltage Selector Switch Basic Test Setup Diagram Setting and Outputting Voltage and Current NOTE: The 3.3V and 5V fixed outputs are always active when power is turned on.
PAGE 5
Over Voltage Protection (OVP) Over Voltage Protection (OVP) allows the user to set a maximum permissible output voltage If the voltage limit is exceeded, the unit will display “OVP” and revert to the STBY mode. Setting the Over Voltage Protection (OVP) value 1. In the STBY mode, press the OVP key, “?_” appears in the display. 2. Enter a value from the keypad (range of 0.001 to 40V). 3. Press the ENTER key to store the value.
PAGE 6
Automated Testing Storing Test Setups 1. Set the Voltage and Current values as desired. 2. Press the SEC button and set the time in seconds. This time will be associated with the step if the automatic step output function is selected. 3. Press the STORE button to save the values. “STRxxx?” will appear in the display (where “xxx” (0 to 199) will be the memory location). 4. Press ENTER to store the value in the displayed location or enter a new location number from the keypad and press ENTER.
PAGE 7
RS-232 PC Communications Interface RS-232 data format Baud rate 9600 Parity none Data bits 8 Stop bits 1 Flow control none RS-232 Connection Connect the supplied communications cable to the rear of the power supply and to the communications port of the PC.
PAGE 8
Example of an RS-232C Program V 20.5 : program 20.5V A 1.25 : program 1.25A V 30 A 2 SEC 20 : program 30V, 2A, for 20 seconds OVP 35 : set 35V for the over voltage protection SEC 60 : enter 60 seconds OCP 0 : disable OCP (Open circuit protection) OCP 1 : enable OCP STORE 120 : store current V/A values in memory location 120. RECALL 100 : recall V and A values stored in memory location 100.
PAGE 9
TM Using Windows Terminal or HyperTerminal program for PC Communication The Terminal or the HyperTerminal program is included in all Windows Typically it is located using the following path: TM operating systems. START Menu > Programs > Accessories > Communications > Terminal or HyperTerminal When in the Terminal or HyperTerminal program, go to PROPERTIES and configure as follows: 1. In the CONNECT TO field, select COM1 or COM2 (depending on which port is being used). 2.