Kepco Power Supply 



1. POWER SWTICH - to OFF position 



2. VOLTAGE CONTROL - to maximum counterclockwise position 



Function Generator 



1. LINE SWITCH - to OFF position 



2. DC OFFSET LEVEL - to position 



3. FUNCTION SWITCH - to SINE position 



4. OUTPUT LEVEL control - to maximum counterclockwise position 



5. RANGE SWTICH - to 0.001 position 



6. FREQUENCY DIAL - to any setting desired 

 The following turn-on procedures are recommeded. 



1. Make sure all connections between the control unit and the depressor control 

 housing are correct. Refer to DTNSRDC Drawing C-588-2. 



2. If the system is being checked out with the towcable in line, make sure the 

 voltage control lead is connected to 5, 6, and 7 of the Kepco rear terminal board as 

 shown on C-588-1. 



CAUTION 



The voltage control lead connected to 5, 6, and 7 of the terminal 

 board at the rear of the Kepco power supply must be disconnected 

 whenever the system is operated without the towcable. Operating 

 the control electronics out of water for an extended period (45 

 min or more) will cause overheating of the depressor control 

 housing if the control flap remains stationary. 



Note: When the towcable is not used in checking the system and the servo- 

 motor is running, the Kepco power supply voltage will increase by 

 30 V to 60 V at the instrument housing in the depressor which may 

 cause destruction of the two positive 12 V regulators in the housing 

 if the voltage lead is not disconnected from the terminal board as 

 mentioned in the above CAUTION. 



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