To use the Nova to measure laser energy and frequency:
1. In measurement mode, verify that the units are mJ, µJ etc. If not, press
the left most soft key.
2. Press the menu button once then press “range” then the “up” “down”
soft keys until the proper range is highlighted. The correct range is the
lowest one that is larger than the pulse energy measured. See section
6.4 of the main manual for details.
3. Press “exit” then press the menu button twice to return to the bargraph
measurement screen. If you wish to have the frequency displayed,
press the menu button only once.
To use the Nova to measure laser power:
1. Verify that the display shows power units in W, mW etc.
2. If the display shows energy units of J, mJ etc. then press “power” to
switch to the power measurement mode.
To expand the bargraph scale fivefold about the present reading:
1. From the bargraph energy or power measurement screen press the
menu button then press “zoom”, then press the menu button twice, or
just press the center button from the bargraph screen.
2. Press “zoom” again to return to full scale.
To measure total energy exposure:
1. Press the menu button until “more” appears. Press “more”.
2. Press “select” until “exposure” is highlighted. Press “go”.
3. Select parameters then press “go”. Press go again. The Nova will
start summing laser energy exposure and the legend will change to
“stop”. When you wish to stop measuring, press “stop”. If you wish to
reset reading to zero before another reading, press “reset”.
4. To return to the bargraph screen, press “exit”.
1
Getting Started
The Nova is equipped with “soft keys.” That is, the functions of
the keys change as indicated by the legend above each key.
When the Nova is first switched on with a sensor attached, the
first screen usually has a digital display with a bargraph at the
bottom. In order to access the soft keys, press the menu button,
located in the second row on the right of the panel. Pressing
the menu button again will access more functions. Pressing it
yet again will bring it back in a cyclical manner to the original
bargraph screen.
To connect sensor to the Nova meter:
1. Insert the D type connector of the measuring sensor cable
into the socket marked “Head Input” on the rear panel of the
Nova meter.
To switch the Nova on:
1. Push up the slide switch on the left side of the Nova meter.
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 Nova off:
1. Return the slide switch to its original position.
2. If you wish to save the current Nova configuration, use the
“configure” function before switching off. See below,
section 2 or refer to the main manual for details.
To set line frequency:
1. Disconnect the sensor and switch off then on again. “Head
Disconnected” will appear.
2. Press “select” until “line” is highlighted.
3. Press “go” then change to correct frequency.
4. Press “exit” and the change will be saved.
To zero instrument:
1. Disconnect sensor, turn off then on again. “Head
Disconnected” will be displayed.
2. Press “select” until “zero” is highlighted.
3. Press “go”.
4. Make sure instrument is not in an electrically noisy
environment and is undisturbed. Press “go” and wait for
message, “zeroing completed”. Press “exit”.
5. For thermal heads, zeroing with the head may also be
necessary. See section 3.5.2 in the full manual.
Nova Quick Refer
ence
NOVA
Quick Reference
Warning:
Incorrect readings will result if pulse length is not set up correctly.
Note
: Some sensors have only one time setting for all pulse lengths. In that
case “N.A.” appears.
4.2 Setting Startup Configuration
1. From the bargraph energy measurement mode, press the menu button
until “more” appears. Press “more”.
2. Press “select” until “config” is highlighted. Press “go”.
3. Press “value” to choose “power” or “energy” for the desired startup
screen.
4. Press “select” until the laser wavelength is highlighted. Now press
“value” to select the laser type you wish to be the default.
5. Press “select” and “value” to choose the pulse length you wish to be
the default.
6. Now press “select” and “value” again to choose the default energy
range.
7. Press “exit” then “all” to save. For further details on configuration see
sections 6.2 and 6.3 of the main manual.
4.3 Setting up PE-DIF Diffuser Sensors to Diffuser IN or OUT Setting
1. Press the menu button twice and press “setup”.
2. Press “select” until the diffuser setting is highlighted and select “IN”
or “OUT” as desired. Make sure the diffuser is physically installed or
not installed on the sensor. Press exit.
3. Press the menu button twice and press “laser” until the correct
wavelength is selected. Note that only wavelengths compatible with
the diffuser setting are visible. (All wavelengths for diffuser IN have a D
suffix, e.g. 106D = 1.06µm, diffuser in).
4. If you wish to save these settings as the defaults, from the main
display, press the menu button twice then press “more”. Select
“config” and press “go”. Press “exit” and “all” to save all present
settings including diffuser IN or OUT.
4.4 Energy or Average Power Measurement
Warning:
Do not exceed maximum sensor limits for power, energy, power density
and energy density as listed in tables 6 and 7 section 9.2 of the main
manual. Otherwise, there is a risk of damaging the absorber. Use the
supplied test slide to test damage if you are in doubt. If the slide is
damaged, then either enlarge your beam or lower the laser energy until
damage is no longer seen.
4.5 To Choose Energy or Average Power Measurement
1. To go from the bargraph energy measurement screen to power
measurement, press the menu button then press “power”. Alternately,
you can press the leftmost soft key directly from the bargraph screen
to go to power measurement.
2. To go from the bargraph power measurement screen to energy
measurement, press the menu button then press “energy”.
Alternately, you can press the leftmost soft key directly from the
bargraph screen to go to energy measurement.
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 3.27-3/17.Feb.19/be Ophir P/N 1J06014
