Scan; Scan Method - thermo spectronic Helios Gamma Benutzerhandbuch

SCAN

To select Scan highlight the SCAN option on the MENU PAGE and press ENTER. The
SCAN Methods page is displayed and from here the instrument and analysis
parameters can be set up.
Move the cursor to the required parameter using the Up/Down Arrow keys. Press
ENTER to enable a parameter to be changed.
Once the method has been set up press ZERO/BASE to perform a baseline scan
with the current method (see page 5) and then press RUN. The spectrophotometer
will perform the scan and display the result on the SCAN GRAPH page. From here
the spectrum can be manipulated and printed.
The scan speed is set to 600 nm per min., and the data interval is 0.5nm.
SCAN PARAMETERS Page
Note: The current spectrum will be lost if any of the method parameters are changed.
MODE
ID
START
STOP
PEAK TABLE
GRAPH HIGH
GRAPH LOW
AUTOPRINT
CELL PROG
REF MODE
MODE
ABS
%T
I
The current spectrum will be lost if the Scan Mode is changed.
ID
START
Selects start wavelength.
The Deuterium lamp will be switched on if a wavelength less than 325.0 nm is
selected for a Gamma. The Start wavelength must be at least 4 nm less than Stop
wavelength. The current spectrum will be lost if the Start wavelength is changed.
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SCAN
* SCAN *
: ABS
: TEST 1
: 400.0 nm
: 600.0 nm
: OFF
: 2.000
: 0.000
: OFF
: AUTO
: OFF
: Select from ABS / %T / I.
Selects Absorbance.
Selects % transmittance.
Selects Intensity mode. This will measure the intensity of the
signal in the sample beam.
: Enter a description using the TEXT ENTRY screen.
: Select a wavelength between 190.0 nm (315.0 nm
for Delta) and 1096.0 nm.
English 21