Adjustment Of Pc Type Light Source Mirror - Jasco V-630 Hardware Manual

5.3.2.3 Adjustment of PC type light source mirror

When the light source is replaced, if the beam from the lamp is not incident upon the entrance slit
correctly, problems will occur, such as insufficient light intensity, a non-linear baseline, and
incorrect values for measurements. Whenever the lamp is replaced, be sure to adjust the light
source mirror.
WARNINGS!
:
(1) The lamp is hot when lit. Do not touch with bare hands.
(2) Wear glasses (ordinary glasses or sunglasses) during adjustment to
protect your eyes from ultraviolet rays.
(3) Do not touch the wiring either with your hand or with a screwdriver.
Contact with the wiring may cause electric shock.
Note: Never loosen any screws other than those required for lamp replacement.
<<Adjustment of light source mirror for halogen lamp>>
(1) Turn on the instrument.
(2) Start [Abs/%T meter] from the [Spectra Manager] window and appears the [Abs/%T meter]
window.
(3) Set parameters as follows.
V-630 measurement parameters
Photometric mode
Response
Wavelength
Halogen lamp
(4) Slide the lid of the light source unit to remove it.
Note: Do not mistakenly loosen other screws instead of the adjustment screw.
(5) Turn the WI lamp stopper adjustment screw (Fig. 5.5 or Fig. 5.6) and search for a position
where the value displayed on the monitor is a maximum.
(6) Replace the lid of the light source unit.
<<Adjustment of light source mirror for deuterium lamp>>
(1) Turn on the instrument.
(2) Start [Abs/%T meter] from the [Spectra Manager] window and appears the [Abs/%T meter]
windows.
(3) Set parameters as follows.
V-630 measurement parameters
Photometric mode
Response
Wavelength
Deuterium lamp
Sample
Fast
500 nm
Turn on
Sample
Fast
250 nm
Turn on
V-650/660/670 measurement parameters
Photometric mode
Response
Band Width
Wavelength
HT Voltage
Halogen lamp
V-650/660/670 measurement parameters
Photometric mode
Response
Band Width
Wavelength
PMT Voltage
Deuterium lamp
29
Sample
Fast
2.0 nm
500 nm
200 V
Turn on
Sample
Fast
2.0 nm
250 nm
200 V
Turn on