4.3 Basic instrument
The basic instrument consists of the spectrometer unit with the interferometer, the lamp unit with two
lamp modules, the laser unit and electronic boards. The Instrument Software (embedded software)
controls the spectrometer and communicates with the PC running NIRWare and with the measuring
cell. It controls all actors (stepper motor, heating, etc.) and sensors (light barrier, temperature sensor,
etc.) in the measuring cell. The sensor is part of the measuring cell.
4
a
b
c
e
f
g
a Main switch
b Primary fuses
c Power supply socket
d Type plate with serial number
e Ethernet connection
f Interfaces for service intervals (USB 1, USB 2, KBD, MS,
VGA, COM)
g Ventilation filter
4.3.1 Lamp unit
The lamp unit comprises two lamp modules:
• A primary lamp module, which is normally in use.
• A secondary lamp module, which is only in use during failure of the primary lamp module.
When the NIRWare software detects a lamp failure, it automatically switches to the secondary lamp
module. Until the primary lamp module has been exchanged the spectrometer measures spectra with
the secondary lamp module.
The operator will be reminded to exchange the primary lamp module, which he can easily do by
himself, see section 7.4. The secondary lamp module can only be exchanged by service personnel.
The hours of operation are logged separately for each lamp module. The lifetime of the lamps is about
6000 h each.
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