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5
PM-100 Series
5.2 Turning the instrument on and off
1)
Press the "ON/OFF" key briefly. The instrument powers on, and backlighting switches on with the short
beeper of the buzzer. Please check the battery capacity and the connection of the battery in the battery
plate if it fails.
2)
Press the "ON/OFF" key briefly again. The instrument powers off and backlighting switches off with the
short beeper of the buzzer. When the battery capacity indicator flashes on the LCD, please recharge the
battery or change new batteries. Otherwise, the instrument will be damaged by the shortage of the power.
3)
Turn on/off the auto-off function the instrument powers off automatically if no key press in 10 minutes.
Press the "ON/OFF" key for about 2 seconds to deactivate the auto-off function and the indicator will
disappear on the LCD. The instrument will be power off if the battery capacity is too low to support the
operation.
5.3 Setting the wavelength
Press the "A" key repeatedly until the desired wavelength is displayed. You can select from six possible
wavelengths: 850nm, 1300nm, 1310nm, 1490nm, 1550nm and 1625nm. The instrument defaults to the
wavelength of 1550nm.
5.4 Setting and checking reference level
Setting the reference level
Press and hold the "REF" key over 2 seconds to store the presently measured value as the new reference level for
the current wavelength. Once the new reference level is set, the LCD displays 0.00dB with the beeper of the
buzzer and the PRO-100 Series switches to the dB measurement mode.
Checking the reference level
Press the "REF" key to display the stored reference level for the current wavelength and a sign of "REF" will be
displayed on the LCD to indicate that it is a reference value. The displayed value only lasts 1 second. The
instrument switches to the dB measurement mode.
