3.4 Operation Using Computer Workstation"
1.
Although the following instructions specify Lumencor’s SPECTRA GUI, operations using third-party image
acquisition control software that provide co-ordinated operation of the light engine with cameras and other
peripherals are generally similar.
2.
Operation and installation of the SPECTRA GUI requires a computer running the Windows operating system
with a free USB port.
3.
Download the zip file for the SPECTRA GUI INSTALLER from http://lumencor.com/resources/documentation-
software/.
4.
Unzip the file and run setup.exe to install the SPECTRA GUI.
5.
Connect the USB A-to-RS-232 cable between the computer and the RS-232 serial port on the SOLA (Figure
5).
6.
Successful installation is indicated by the appearance of “USB Serial Port (COM #)” under the “Ports (COM
&LPT)” tab in the Windows Device Manager. If the virtual COM port (VCP) is not registered by the operating
system, download and install the VCP driver from http://lumencor.com/resources/documentation-software/.
7.
Connect the DC power supply to the SPECTRA.
8.
Check that the liquid light guide or optical fiber is securely connected to the output adapter on the front panel
and that the output end is safely directed into an enclosed optical path (e.g. microscope input collimator or a
beam dump).
9.
Toggle the power switch on the rear panel to the ON position. The green LED next to the switch (Figure 5)
indicates that power to the light engine is ON.
10.
Run the GUI by going to the Program Menu and selecting LLE 7CH GUI.
11.
In the COM pulldown menu (GUI window, upper right), select COM # assigned to USB-Serial port.
12.
Press the “INIT” button in the GUI.
13.
The computer should now have control of the SPECTRA. In the GUI window, a graduated slider controls the
output intensity for each component light source [1,2]. The ON-OFF button below each intensity slider turns
light output from the selected source on or off.
14.
The G/Y button selects green or yellow light output from SPECTRA light engines. Green output is the default
selection on start up. For SPECTRA X light engines, this control is inactive and green/yelllow output selection is
accomplished by manual interchange of filters (Figure 3).
15.
There is no warm-up time; the light engine output stabilizes less than 1 second after the light output is switched
on. Light output can be switched off during intervals when it is not required for active viewing or data
collection. After light output is switched off, the cooling fan will continue to run for 5 minutes, after which it will
automatically stop until light output is turned back on.
Notes
[1] Output intensity can be set from 0–100%; however operation in the range 0–5% is not recommended.
[2] Setting the intensity slider to zero is not functionally equivalent to turning light output off using the ON-OFF button. In
this condition, the fan will continue to run as the light sources are still energized, even though their output may not be
detectable.
3.5 TTL Interface"
The TTL interface provides users with a faster method of switching color channel outputs on and off. Individual TTL lines
are provided for each color channel (Figure 5). These can be conveniently addressed using an accessory BNC breakout
cable (Lumencor part number 29-10015 or 29-10080) connected to the rear panel DB15 TTL port. Note that TTL and
serial on/off commands have a logical OR relationship. Therefore source on/off controls on the light engine control pod,
in the SPECTRA GUI or in third-party image acquisition control software must be set in the “OFF” state when using TTL
control. The TTL interface does not control source output intensity, which remains under serial (RS-232) control. TTL
polarity (ACTIVE = HIGH or ACTIVE = LOW) is factory set according to order specifications.