NOTE: When using external sensors that are powered by the Nova-
Strobe vbx, e.g. Remote Optical Sensor (ROS-P), the sensor
must be plugged in before the stroboscope is turned on, or
the remote sensor may not be powered up.
The input jack (S pointing into socket) enables an external signal to
trigger the strobe. Inserting a plug into the input jack will automatically
put the strobe into the External Input Mode. When the plug is removed,
the strobe will be put back into the Internal Mode. The Internal Mode
can be forced by pressing the INPUT button. The polarity of the
input pulse can be set in the MENU options.
With no external input, the output jack (T pointing away from socket)
provides a TTL compatible pulse from the strobe’s internal oscillator.
If an external input is applied, the output pulse is in sync with the
input pulse. This output pulse may be used to trigger a second
stroboscope synchronously to illuminate larger areas. Many strobes
can be “daisy chained”. The output jack of one strobe is connected to
the input jack of the next strobe causing all the strobes to flash together
and be controlled by the first strobe in the chain. The polarity of the
output pulse can be set in the MENU options.
3.0 MENU
The strobe has a Menu, which allows the user to select settings such as
number of decimal places, backlight on or off, positive or negative edge for
input and output signal, and input blanking on or off.
To enter the MENU:
1. Press the ALT FUNCTION button and then the MENU button.
2. SETUP and the menu option will be displayed.
3. Turn the tuning knob to cycle through the main menu selections.
6
when using a delayed flash mode. The Nova-Strobe vbx has an “Input Blanking”
feature to allow it to ignore this false trigger.
Even with the Input Blanking, large delays cannot be obtained using an ROS
if the strobe’s flash is triggering the ROS. The duration of the ROS pulse in
response to the strobe’s flash is about 0.5 milliseconds to 1.1 milliseconds
depending on the flash rate. This limits the largest delay possible because
the flash swamps the signal from the ROS, and consequently it will not
provide the pulse from the reflective marker. If large delays are desired,
reposition the ROS so it is away from the strobe’s direct flash or use a
magnetic sensor. Moving the ROS 6 to 12 inches will help.
The Input Blanking feature itself limits the maximum delay, which is
detrimental to non-optical sensors. It is possible to disable (or enable) the
blanking in the Nova-Strobe vbx. (see section 3.0 MENU).
7.0 LAMP AND FUSE REPLACEMENT
7.1 Lamp Replacement
WARNING: Before attempting to remove the lamp, make
sure the stroboscope is turned off and any
mains cord is removed from the AC outlet. Allow
the lamp to cool waiting at least 5 minutes.
The stroboscope is designed to discharge the internal high voltages
within 30 seconds. However, caution should be exercised when replacing
the lamp.
The lamp can be replaced by using just a pocket screwdriver. It is not
necessary to remove any screws to replace the lamp.
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