PSM-SERIES PROGRAMMABLE POWER SUPPLY 
USER MANUAL 
 
   
 
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This manual contains proprietary information, which is protected by 
copyrights. All rights are reserved. No part of this manual may be 
photocopied, reproduced or translated to another language without prior 
written consent of Good Will company.   
The information in this manual was correct at the time of printing. 
However, Good Will continues to improve products and reserves the rights 
to change specification, equipment, and maintenance procedures at any 
time without notice. 
 
Good Will Instrument Co., Ltd. 
No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan. 
1 
1-1. DESCRIPTION.....................................................................................1 
1-2. FEATURE............................................................................................2 
2. TECHNICAL SPECIFICATIONS......................................................3 
3. PRECAUTIONS BEFORE OPERATION.........................................6 
3-1. UNPACKING THE INSTRUMENT ..........................................................6 
3-2. CHECKING THE LINE VOLTAGE .........................................................6 
3-3. ENVIRONMENT ..................................................................................7 
4. PANEL INTRODUCTION...................................................................8 
PSM-SERIES PROGRAMMABLE POWER SUPPLY 
USER MANUAL 
 
   
 
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4-1.
 FRONT PANEL....................................................................................8 
4-2. REAR PANEL BRIEF..........................................................................10 
4-3. DISPLAY BRIEF ................................................................................11 
5. OPERATION INSTRUCTION .........................................................15 
5-1. BASIC OPERATION...........................................................................15 
5-2. FUNCTION KEY DESCRIPTION .........................................................16 
5-3. OPERATION METHOD ......................................................................31 
5-4. THE MAXIMUM VALUE OF THE OUTPUT SETTING.............................41 
5-5. TEST LEAD ......................................................................................42