TTLENABLE to the LAN port. Input TTL signals can be
conveniently addressed using an accessory BNC breakout cable
(Lumencor part no. 29-10156 or 29-10216; Figure 6)
connected to
the front panel TTL port. The breakout cable also provides a global
shutter input (labeled “shutter”). TTL signals input to the global
shutter will synchronously toggle all currently enabled source
channels on and off
.
4. Light Output Characteristics
SPECTRA III (L) light engines may incorporate different types of
solid state light sources. Constituent light sources may include
LEDs, luminescent light pipes or lasers. The light sources installed
and the bandpass filters associated with each are shown on the
Certificate of Conformance included with the shipping documents
e-mailed by Lumencor to the customer. The certificate of
conformance also shows full (100%) power outputs for each
source measured at the terminus of the liquid light guide (LLG) or
optical fiber (Figure 1). Laser sources are listed on a label affixed to
the light engine (see page 7) together with their center wavelength
and maximum output power.
Not all sources may be turned on simultaneously. To prevent exceeding the
capacity of the DC power supply, power consumption is tracked by the onboard computer. If a set limit (see
Governor
, Figure 5) is exceeded, either by increasing intensity settings for sources that are already on, or by
turning on additional sources, commands will be rejected. To clear the error condition, reduce intensities of
sources that are on or turn off additional sources.
Light source outputs are refined by bandpass filters. The specifications of these bandpass filters are
recorded on the certificate of conformance as CWL/FWHM where CWL =center wavelength and FWHM =
full width at half-maximum transmission, both measure in nanometers (nm). Bandpass filters are not user-
exchangeable and changes require return of the light engine to Lumencor’s factory for service (see Section
7). Since changing bandpass filters will result in source output power changes, a new certificate of
conformance will be provided as part of this service.
SPECTRA III (L) Light Engine® Instruction Manual
14
Figure 6.
BNC break
out cable (p/n
29-10156). The same cable configuration
with SMB connectors instead of BNC is
also available (29-10216)