Extech Instruments 382280 User Manual
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Extech Instruments 382280 User Manual

Programmable dc power supply 200 watt (40 volts / 5 amps)
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User's Guide
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). 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.

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Summary of Contents for Extech Instruments 382280

  • Page 1 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). Programming features include custom over-voltage/current protection with delay timer, 199-test storage, and automated testing. Careful use of this...

  • Page 2: Specifications

    Specifications Programmed Voltage and Current (after 5-minute warm-up) Range Resolution Accuracy Voltage V (C.V.) 0 to 40V 0.05% ± 9mV Current A (C.C.) 0 to 5A 0.2% ± 9mA Voltage and Current Display (Read back) Range Resolution Accuracy Voltage V (C.C.) 0.1 to 40V 0.1% ±...

  • Page 3: Front Panel Description

    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.

  • Page 4: Operation

    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.
  • 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.

  • Page 6: Automated Testing

    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.
  • Page 7 RS-232 PC Communications Interface RS-232 data format Baud rate 9600 Parity none Data bits Stop bits 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. Power Supply Pin 2 ------------------------------ Pin 2 RX Pin 3 ------------------------------ Pin 3 TX...
  • Page 8 Example of an RS-232C Program V 20.5 <cr>: program 20.5V A 1.25 <cr>: program 1.25A V 30 A 2 SEC 20 <cr>: program 30V, 2A, for 20 seconds OVP 35 <cr>: set 35V for the over voltage protection SEC 60 <cr>: enter 60 seconds OCP 0 <cr>: disable OCP (Open circuit protection)

  • Page 9: Warranty

    Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies on sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext.

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