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Extech Instruments 382275 User Manual

Extech Instruments 382275
14 pages
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User's Guide
Model 382275 and 382276
Single Output Laboratory Grade
Switching DC Power Supply
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Extech Instruments 382275 Specifications

General IconGeneral
Output Voltage0-30V
Output Current0-5A
Input Voltage110V/220V AC
Power150W
Voltage Regulation≤0.01% + 3mV
Current Regulation≤0.2% + 3mA
Ripple and Noise≤1mVrms
Operating Temperature0°C to 40°C
PolarityPositive and Negative

Summary

Introduction and Safety

Product Introduction

General introduction to the Extech 382275/382276 power supply, highlighting features and applications.

Safety Warnings

Critical safety notices for operating the power supply, including avoiding water and wet hands.

Operational Cautions

Important cautions regarding grounding, environment, heat, ventilation, and cable specifications.

Power Supply Description

Front Panel Components

Identification and description of the controls, displays, and indicators on the front panel.

Rear Panel Description

Rear Panel Components

Identification and description of the connectors, switches, and fan on the rear panel.

Mode Selection and Presets

Operating Modes

Explanation of the four operating modes: Normal, Preset, Set, and Remote Control.

Preset Mode Details

Details on factory-set voltage and current values for presets P1, P2, and P3.

Operation and Setup

Power Up Checks

Procedure for verifying the power supply status and functionality upon initial power-on.

Using Control Knobs

Instructions for using the rotary encoder knobs for precise voltage and current adjustments.

Connecting to Unit Under Test

Steps for safely connecting the power supply to the device being tested (UUT).

Remote Control Operations

Remote Voltage Control (Voltage Source)

Method to remotely adjust output voltage using a 0-5V external voltage source.

Remote Voltage Control (Resistor)

Method to remotely adjust output voltage using a 5Kohm variable resistor.

Remote Current Control (Voltage Source)

Method to remotely adjust output current using a 0-5V external voltage source.

Remote Current Control (Resistor)

Method to remotely adjust output current using a 5Kohm variable resistor.

Output Enable/Disable

Instructions for remotely enabling and disabling the power supply output via specific ports.

Troubleshooting and Faults

Over Voltage Protection (OUP)

Explanation of OVP, its warning display, and reset procedure.

Over Temperature Protection (OTP)

Details on OTP, its warning, and troubleshooting steps for overheating.

Over Load Protection (OLP)

Information on OLP, its function, and how to reset the warning.

Specifications

Output and Regulation Specs

Key output parameters including voltage, current, load/line regulation, and ripple.

Meter Accuracy and Protections

Specifications for meter accuracy and the unit's built-in protection features.

Input and Environmental Data

Details on input voltage, efficiency, switching frequency, and operating conditions.

Maintenance and Services

Cleaning Instructions

Guidelines for safely cleaning the exterior housing of the power supply.

Repair and Calibration

Information on Extech's services for repair, calibration, and NIST certification.

Warranty Information

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