Steren MUL-600, Instruction Manual

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d) Working cycle measuring
Working cycle ranges are: 0.1 % to 99.9%.
To measure working cycle, follow these steps:
1. Set selector switch to Frequency.
2. Press Hz% until you see the % symbol in the screen.
3. Connect the testing leads to the object. The value will be displayed in the
screen.
- If you see 000.0% in the screen, the input signal is high or the level is low.