Zuzi UV-VIS 4481 Скачать руководство пользователя

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Page 44

User manual 5448X000 Version 1 June-06

3. Edit keys (

, Ce, Enter, Return)

3.a Cursor keys (

): Used to shift the cursor up and down while browsing data and

increase or decrease data while setting time.

3.b Cursor keys (

): Used to switch the displayed data while measuring

DNA/Protein and switch the objects while setting time.

3.c Cancel key (Ce): Used to clear off or cancel a previous operation.
3.d Enter key (Enter): Used to confirm and execute the current function, or to finish

parameter setting and quit.

3. e Return key (Return): Used to quit the current function and return to the previous

page.

4. Operation keys (Autozero, GoTo WL , Start/Stop)

4.a Autozero key: Used to set ABS to zero (transmittance 100%). In photometric mode

and quantitative mode, setting ABS to zero(Autozero) is only for current wavelength. In
spectrum mode, it performs baseline calibration in the wavelength 's adjusting range.

4.b Wavelength set key (GoTo WL): Used to set the current wavelength.
4.c Start/stop key (Start/Stop): Used to start or stop reading.

3. TECHNICAL SPECIFICATIONS

Model

4481 Simple beam

4488 Double beam

Photometric system

Simple beam ratio

Double beam ratio

monitoring system

Wavelength range

190 nm-1100 nm

Spectral bandwidth

2 nm

Wavelength display

0.1 nm

Wavelength setting

1nm increment for each scan start and end wavelength's setting
0.1nm increment for GoTo WL setting

Wavelength accuracy

±0.5 nm (with automatic wavelength correction)

Wavelength’s
repeatability

± 0.2 nm

Photometric accuracy

± 0.002 Abs (0-0.5Abs)
± 0.004 Abs (0.5 -1.0 Abs)
± 0.3 %T (0- 100%)

Photometric repeatability

±0.001 Abs (0-0.5 Abs)
±0.002 Abs (0.5- 1.0 Abs)
± 0.15%T (0-100%T)

Stray light

< 0.3 %T (220 nm)

100% T noise

< 0.3% T (at 500nm, 2nm bandwidth, for 2 minutes)

Baseline flatness

± 0.004 Abs (2nm bandwidth , middle scanning ,1100-190nm)

Stability

< 0.002 A/30min (2 hours warming up, 2nm bandwidth, at 500nm)

Version 1 June-06

User manual 5448X000 Page 69

Setting protein factor

Under the self-defining mode, press

(3)

key to display the protein factor setting page.

The system will indicate users to input Protein factor, as shown in picture 46.

At the bottom of this page, enter the

desired protein factor by pressing the
numeric keys

(0~9)

(.)

(4.2).

key (4.3c)

is used to clear off the previous entry.
The system will indicate users to input
the second factor after inputting the first
one. Press

Enter key

(4.3d) to confirm the

numeric entry. If nothing is to be ente-
red, press

Return

key (4.3e) to quit

directly. A 4-digit figure entry is allo-
wed. The range is from -9999 to 9999. If
the figure entered exceeds five digits,
the system will delete what has been
entered. You should start a new entry.

Setting background calibration at 320nm

Under the self-defining mode, press

(4)

key to set background calibration at 320nm.

Two choices are available for this item: YES and NO, which can be selected alternately
each time

(4)

key is pressed.

Setting calibration factor

Under the self-defining mode, press (5) key to display the calibration factor setting

page. The system indicate users to input the calibration factor, as shown in picture 47.

At the bottom of this page, enter the

desired calibration factor by pressing
the numeric keys

(1~9)

(.)

(4.2).

key

(4.3c) is used to clear off the previous
entry. 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. A 4-digit figure entry is
allowed. The range is from -9999 to 9999.
If the figure entered exceeds four digits,
the system will delete what has been
entered. You should start a new entry.

Quitting parameter setting of DNA/Protein

Press

Return

key (4.3e) to quit DNA/Protein parameter setting and return to the main

menu of DNA/Protein.

14:57

Input Protein Factor

(-9999 - +9999):

DNA / Protein

Parameter

Means:

Custom