4.2. Changing Chosen Wavelengths (metallic type only)
1. Select “Laser” and enter.
2. Select the wavelength you wish to use and enter. If you wish to save
this wavelength as the startup default, press save before exiting.
3. If you wish to modify one of the wavelengths, select the closest
wavelength, press the right navigation key.
4. Now, using the up/down keys to change the numbers and the right/left
keys to move to the next number, modify to the wavelength you want.
5. When finished, press “save” and exit. If you only want a temporary
change, exit without “save”.
4.3. To Set Type of Laser Being Used
From main measurement screen, select “Laser” and enter. Choose the
desired laser type or wavelength. If you want this one to be the startup
wavelength, press save before exiting.
4.4. Setting Startup Configuration
1. Turn on the Nova II with the sensor connected, select “Menu” and
enter. Select “Configure”.
2. Now, with the navigation keys select “Startup Mode”, select “power”
or “energy” as the startup mode. Press enter to exit.
3. Now, with the navigation keys select “Display Mode”. Press the enter
key and select the type of screen you wish to start up with. Press
save and exit. If you do not want to save this as the startup mode but
only change for now, exit without save. (This choice is saved in the
instrument and not the sensor so the Nova II will start up from the
screen selected for all sensors).
4. Now select “Energy Range”, press enter and choose the manual energy
range you wish to be the default.
5. Now select “Average” to select what period you wish to average power
over or select the default, “none”.
6. If the sensor is a diffuser sensor, now select diffuser in or out.
7. Now select “Max Pulse Len” and choose the shortest pulse length
setting longer than your laser’s pulse length.
Warning:
Incorrect readings will result if pulse length is not set up correctly.
8. Select “Laser” and select the laser type you wish to be the default.
9. Press “save” to save all present settings then “exit” to get back to the
main measurement screen.
Note:
Some sensors have only the long pulse setting for all pulse lengths. In
that case N/A appears. For further details on configuration see Sections 6.2
and 6.3 of the manual.
4.5. Energy or Average Power Measurement
Warning:
Do not exceed maximum sensor limits for power, energy, power density and
energy density as listed in tables 5 and 6 section 10.2 of the manual, Sensor
Specifications. Otherwise, there is a risk of damaging the absorber.
With the pyroelectric sensor, you have been supplied a test slide with the
same coating as on your pyroelectric detector. You can also obtain this slide
from your dealer. You should use this slide to test the damage threshold
with your laser pulses. If the slide is damaged, then either enlarge your
beam or lower the laser energy until damage is no longer seen.
4.6. To choose Energy or Average Power Measurement
To switch from the main energy measurement screen to power
measurement, press “power”. To switch from the main power measurement
screen to energy measurement, press “energy”.
Nova II Quick Refer
ence
NOVA II
Quick Reference
Ophir Optronics Solutions LTD.
Science Based Industry Park P.O.B. 45021, Jerusalem 9145001, Israel
Phone +972-2-5484444
https://www.ophiropt.com/photonics
rev 1.45-5/17.Feb.19/be Ophir P/N 1J06036
1
Getting Started
The Nova II is equipped with “soft keys”. That is, the functions
of the keys change as indicated by the legend above each key.
It is also equipped with 4 navigation keys and a round enter key
in the center.
To connect sensor to the Nova II meter:
Insert the 15 pin D type connector of the measuring sensor
cable into the socket marked “Head Input“ on the rear panel of
the Nova II meter.
To switch the Nova II on:
To switch on, briefly press the on/off/backlight switch (leftmost
key). The unit will switch on, and the display will appear. Note
that the sensor must be plugged in before the unit is switched
on. To switch the backlight on or off, press the on/off/backlight
switch briefly again. To switch the Nova II off, press the on/off/
backlight switch and hold it for ~ 3 seconds until the display
blanks.
If you wish to save the current Nova II configuration, use the
“configure” function. (See section 2.3.2.).
To set the display modes:
1. Disconnect the sensor and switch off then on again. “Head
Disconnected” will appear.
2. Select “Display Mode” and enter. Choose the desired mode,
press save. The Nova II will now be in this display mode for
all sensors.
3. Select “Date” and press the enter button. Using the
navigation keys set to the correct date. Press save.
4. Select “Time” and enter. Using the navigation keys, set to
the correct time. Press save.
5. For adjusting RS232 baud rate and An. Output voltage see
the main manual.
