PRESIDIUM Synthetic Ruby Identifier User Handbook Manual page 16

1.2 Switching on your device
To switch on your Synthetic Ruby Identifier, press and hold the
Power button located at the front of the unit. A blue light will blink for
approximately 20 seconds to allow the product to warm up. (Fig 1.3).
Once the blue light stops blinking and remains stable, the device is
ready for use.
Low High Start Test
UV Transmittance
Fig.1.3 Switch on Synthetic Ruby Identifier
with the Power button
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