4.Spectral Output
SPECTRA light engines can have 3–7 discrete spectral outputs, depending on their customer-
specified configuration. SPECTRA X light engines have 7 discrete outputs (Figure 8) derived from an
array of 6 solid state light sources. The SPECTRA X teal source can optionally be replaced by a
near-infrared (nIR) source providing output from 710–750 nm (depending on the associated filter
bandpass).#
Figure 7. Rear panel of a SPECTRA X light engine equipped with metered dosage option. 1. Indicator LED. Illuminates
when DC power supply (3) is connected and power switch (2) is ON. 2. ON (I)/OFF (O) electrical power switch. 3. Input
connection from DC power supply. 4. Serial port for control from Lumencor GUI or third-party software. Requires virtual
serial port (VSP) driver installation on host computer. 5. Provides independent on/off control of each component light
source via TTL pulses delivered via BNC breakout cable (Lumencor part number 29-10080 or 29-10015). 6. Outputs
analog signals synchronized to light dose on and off time points. 7. Outputs 0–5V square wave with frequency
proportional to light flux detected by the reference photodiode for external display or processing.
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