What are ways to read ir2153 output if it is oscillating

Godyreal

New member
Can someone tell me how I can use digital multimeter to test the ir2153 if it is oscillating, my smps I tried to design when I put DMM black probe on the negative power line and the positive of the DMM probe to the pin 7 of the ic it read 15 volt no fluctuations and the pin 5 read 0.45 volt question is is that how it should be? Or how do I know if it is oscillating I don't have oscilloscope or frequency meter thanks to all the genius in the house
 
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