Page 58 User manual 5448X000 Version 1 June-06
Peak-picking
On the main menu of spectrum scan-
ning, press
(F2)
key to display peak-pic-
king operating page as shown in picture 25.
At the bottom of this page, enter the
minimum height value of picked
peaks/valleys by pressing the numeric
keys
(0~9)
,
(.)
(4.2) .
Ce
key (4.3c) is used
to clear previous data. Press
Enter key
(4.3d) to confirm the numeric entry and
quit. If nothing is to be entered, press
Return
key (4.3e) to quit directly. The
program permits setting a 4-digits num-
ber. In case the number you set exceeds four digits, the system will delete what has been
entered. You should start a new entry.
After the minimum peak/valley value is entered, the system will start peak-picking cal-
culation and the calculated result will be displayed on the screen. The peaks and valleys
on the spectrum are marked. At the same time, an arrow indicates the current peak/valley
point. Below the spectrum, the wavelength and the measured value of the pointed
peak/valley are displayed. By pressing
cursor keys (4.3b), the arrow will be shifted
to look up other peak/valley points. Press
(F4)
key to print out the result. Press
Return
key
(4.3e) to return to the main menu of the spectrum scanning after all the operations are
finished.
Printing measuring results
When spectrum scanning is finished,
press
(F4)
key to print out the measured
spectrum.
(F4)
key will not be effective if
there is no spectrum stored.
Press
Enter
key (4.3d) to print the
spectrum or press
Ce
key (4.3c) to quit
printing.
Quitting spectrum scanning measurement
When spectrum scanning measurement operation is finished, press
Return
key (4.3e) to
quit spectrum scanning. The system alerts data will be lost. Users can press
Return
key
(4.3e) to return to the main menu of the instrument.
Quantitative Measurement
In this mode one-wavelength determination can be done. Both K-Factor method and
calibration curve method are used in quantitative measurement.
14:57
Input Percent:
(1 - 100): 5
PARM
(F1)
PEAK
(F2)
PRIN
(F4)
Spectrum
Abs
200
250
300
350
400
-0.010
-0.005
0.000
0.005
0.010
660.0nm
0.000
Picture 25
14:57
Print OK?
Yes: Enter , No: CLS
PARM
(F1)
PEAK
(F2)
PRIN
(F4)
Spectrum
Abs
200
250
300
350
400
-0.010
-0.005
0.000
0.005
0.010
660.0nm
0.000
Picture 26
Version 1 June-06
User manual 5448X000 Page 55
Parameter setting
On the main menu of spectrum scan-
ning, press
(F1)
key to display the para-
meter setting page, as shown in picture
19.
On this page, users can set the photo-
metric mode, scanning speed, scanning
wavelength range, ordinate full scale
range and sampling interval by pressing
the corresponding numeric keys. After
parameter setting is finished, press
Return
key (4.3e) to return to the pre-
vious page.
Setting photometric mode
Press
(1)
key to set photometric mode. Four modes are available: Abs, Er, Es and %T ,
which can be selected in turn when
(1)
key is pressed.
Es
and
Er
are the energy measuring
on the reference beam and the sample beam respectively. When measuring the energy of
the light beam, the energy gain will be asked to input first , and then the system executes
a spectrum scan.
Setting scanning speed
Press
(2)
key to set the scanning speed to fast, middle or slow in turn.
Setting sampling interval
Press
(3)
key to set sampling interval. You have 5 choices: 1nm, 2nm, 0.1nm, 0.2nm or
0.5nm, which can be selected in turn when
(3)
key is pressed.
A maximum of 1100 points can be stored for one spectrum, because the memory space
of microprocessor is limited.
If the set wavelength range is wider than 110nm and the sampling interval is set to
0.1nm, the system will change it to 0.2nm automatically. In other circumstances, the set-
ting will not be changed.
Setting wavelength range
Press
(4)
key to display the wave-
length range setting page of spectrum
scanning. The system asks the user to set
wavelength values, as shown in picture
20.
14:57
Spectrum
Parameter
1. Mode:
Abs
2. Scan Speed: Middle
3. Interval:
1.00
4. Scan WL: 400.0 200.0
5. Range:
0.010 -0.010
Select Item No.:
Check
(F5)
Picture 19
14:57
Spectrum
Parameter
1. Mode:
Abs
2. Scan Speed: Middle
3. Interval:
1.00
4. Scan WL: 400.0 200.0
5. Range:
0.010 -0.010
Input Scan Start WL:
(1100 - 190): 400
Check
(F5)
Picture 20
ENGLISH
ENGLISH
