Walz MINI-PAM-II, Manual, Page: 54 / 130

Chapter 6 Hints
48
6.5 Signal Noise
Check if fluctuating light sources (fluorescent tubes, computer
screens) affect the signal.
Exclude that automatic scaling of Y axis at low Y(II) has amplified
signal noise.
6.6 System Hangs
Disconnect line power and remove batteries. Power on again.
6.7 External PAR Sensor is not Responding
Check the following:
External sensor activated (Fig. 48, page 85)?
Correct external PAR sensor selected (Fig. 52, page 89)?
Sunlight profile selected when measuring external light (Fig. 54,
page 90)?
When miniature spectrometer, make sure that the spectrometer
in the light measuring mode (not fluorescence or reflectance).
6.8 Intensity of external lamp cannot be adjusted
Repeat lamp calibration.