Gentec-EO UNO - Manual (Page 7)

UNO User’s Manual Revision – 6.1 6
Gentec Electro – Optics, Inc. All rights reserved
Fig. 1-1 UNO Front Panel
2.3 Front Panel Description
1- control key.
UNO on and off.
2- Zero / dBm control key.
Cancels electronic offset, detector offset and ambient light on the detector. This key
should be pressed before taking measurements. Refer to p.7 adjusting the zero (steps 8
and 9). The hidden dBm function is available by pressing more than 2 seconds on the
Zero control key.The Uno will convert the displayed number in dBm (dB referenced to
1mW)
and will display “dBm” unit. To get back to the previous display in Watt, press again
more than 2 seconds on the Zero control key.
3- Att control key.
Photodetectors can be calibrated with and without attenuator. This key allows the user to
select the proper configuration and wavelength. The ATT LCD annunciate indicates
whether the attenuator sensitivity is activated.
4- Save λ control key.
After selecting the proper wavelength using the λ up and λ down control keys, pressing
the Save λ control key stores the wavelength in non-volatile memory and returns to the
measurements with the corresponding sensitivity.
5- λ up and λ down control keys.
Allows the user to select the appropriate wavelength.
6- Fast and Slow control keys.
These keys are only useful with thermal detector heads. The fast mode enables
anticipation, which shortens the natural response time of the detector. The slow mode
disables anticipation. By default, the monitor is in Fast mode. This setting is not stored
in non-volatile memory and therefore returns to Fast mode on every power-up.