Jenway Genova Nano German - Manual (Page 48)

To change the maximum absorbance or % transmittance
value press the key adjacent to the maximum y-axis value
and this opens a number entry screen. Use the keys
adjacent to the arrow icons to increase or decrease the
number. To change the sign press the key below the + or -
icon. Repeat presses will cycle between + and –. Once the
required absorbance or % transmittance has been entered
press the key adjacent to the tick icon.
9.2.1.2 Setting Lag Time or Start on Level
In this measurement mode starting the kinetics measurements can be delayed by setting a lag time or
a start on level. The lag time is the amount of time that the instrument will wait before starting the
kinetics measurements. The start on level is the absorbance level that must be reached before starting
the kinetics measurements. Both options can be set using the set lag time/start on menu. This function is
accessed by pressing the key below the start time pause icon on the far left side of the x-axis. This opens
the lag time/start on level menu.
To set the lag time press the key adjacent to the clock icon.
Use the keys at the bottom of the screen to select the digit
to be changed and the keys adjacent to the arrow icons to
increase or decrease the number. The lag time can be reset
to zero by pressing the key adjacent to the 000 icon.
Once the required lag time has been entered in seconds press the key adjacent to the tick icon to save
and return to the settings menu.
To set the start on level press the key adjacent to the
Abs/%T icon. Use the keys at the bottom of the screen
to select the digit to be changed and the keys adjacent to
the arrow icons to increase or decrease the number. The
positive sign can be changed to a negative sign by pressing
the key below the symbol + icon.
On the left hand side of the screen the symbol can be changed to read greater than (>) or less than (<)
the absorbance level that has been entered. The start on level can also be turned off (</>). Once the
required absorbance or % transmittance level (depending on the operating mode selected) has been
entered press the key adjacent to the tick icon to save and return to the settings menu.
9.2.1.3 Selecting Absorbance or % Transmittance
The operating mode is displayed on the left hand side of the screen. The default parameter is absorbance
and pressing the key adjacent to the ABS icon cycles the operating mode between the absorbance and
% transmittance.
9.2.1.4 Changing the Resolution
The resolution of the concentration can be selected from 1, 0.1, 0.01 or 0.001 by repeat presses of the
key below the resolution icon.
46