Go  List       PASS                                    
                            FAIL                                    
Power Good Signal (POK, or P_GOOD)         N/T                                     
                            N/A                                    
Model :                            Reference                                    
                                                                 
1.      Equipment :                                                              
               (1)    AC Source : Chroma 6530                                                          
              (2)    DC Load : Chroma 63102/63103                                                        
                (3)    Oscilloscope : Tektronix TDS 5054B                                                              
  (A)   DC Source : Agilent E3634A                                                              
 
2.      Test Condition :                                                              
  (1)    AC Input Voltage : Min. and Max. of Input Voltage                                                      
  (2)    Input Frequency : 60Hz /50Hz                                                          
  (3)    Load Condition : LD1 & LD2                                                          
  (4)    Temperature :Room Ambient Temperature                                                         
  (5)   Wavefrom Requirement  :  12V/PG                                                        
                                                                 
3.      Spec :                                                              
  The power good signal (TTL compatible) shall be provided to indicate normal operating conditions of the power supply. The power good signal will be asserted (low state) during power up until the +5VDC outputs are within the regulation range defined in Section 3.2.1 The electrical and timing characteristics of the power good signal, are shown in Table 7 and Figure1: Power Supply Timing. PWR_OK should be de-asserted to a low state when any of the +12 VDC, +5 VDC, or +3.3 VDC output voltages falls below its under voltage threshold, or when mains power has been removed for a time                                              
                                               
                                               
                                               
                                               
  The output will be an open collector/drain type. It will be capable of driving the output below 0.4V with a load of                                               
  up to 10 mA.                                                             
  The output will have an internal pull-up resistor of 1K between the output and either Standby or +5VDC.                                               
Parameter Description     Min Typ Max Units
Power Good Events            
AC Main Power Loss       Yes   Yes/No
Fan Failure         No   Yes/No
Over Temperature       No   Yes/No
                                                               
4.      Test Result : PASS                                                            
  Power Good Signal  Level Load Condition Test Result Spec                        
                         
  Hi Level 90VAC  LD1 5.089V Power Good  signal   will have an internal  pull-up resistor of 1K between the output and  Standby                        
  264VAC 5.082V                        
  Low Level 90VAC  0.303V < 0.4V                        
  264VAC 0.3V                        
  Hi Level 90VAC  LD2 5.096V Power Good  signal   will have an internal  pull-up resistor of 1K between the output and  Standby                        
  264VAC 5.095V                        
  Low Level 90VAC  0.215V < 0.4V                        
  264VAC 0.187V                        
                         
                         
  Test Item Test Result Pass/Fail Spec                            
                             
  Over Current Protection Low Pass Low Refer to OCP sheet                          
                               
  Over Voltage / Under Voltage Protection Low Pass Low Refer to OVP/UVP sheet                            
   
  DC Outputs Pre Warning Time
 (T4)
Pass Pass Power Good  signal must be driven low at least 1ms before any of the outputs go out of regulation Refer to T4 sheet
   
                                     
90V 60Hz PS_ON ON    Load1         90V 60Hz PS_ON OFF   Load1              
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264V 50Hz PS_ON ON    Load1             264V 50Hz PS_ON OFF    Load1                                          
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90V 60Hz PS_ON ON    Load2             90V 60Hz PS_ON OFF    Load2                                          
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264V 50Hz PS_ON ON    Load2             264V 50Hz PS_ON OFF    Load2                                          
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