Hitachi 902 Service Manual page 54

No. Data Alarm
4 ≤ Number of
photometric
points in reaction
limit level range ≤
8
Standard 1
absorbance
abnormal
Duplicate error
Printer S. I/F
(2) When 4 ≤ N ≤ 8
LIN. 8 F
Note that linearity check is
not carried out in the
following cases.
• The number of
•
•
S1ABS? H (Photometry assay) (Note 1)
In calibration, the mean value
of two measured absorbance
values of STD (1) is not
within the specified standard
1 absorbance range (input
value).
Value is absorbance with
End-point Assay, in the case
of late assay, is main wave O
length first absorbance.
DUP U (Photometry assay)
In calibration, this error is
indicated if the difference in
absorbance (or absorbance
change rate) between the first
and second measurements of
STD (i) is larger than the
DUPLICATE LIMIT (input
value).
(i = 1 to N: N indicates the
number of standards.)
Description
Linearity limit value LIN.
LIMIT
∆E f
∆E
photometric points in the
reaction limit level range
is three or less.
∆E ≤ 60
| |
(× 10e - 4ABS/min)
∆Ef - ∆E ≤ 60
| |
b
(× 10e - 4ABS/min)
2 - 42
Remedy
b
• Prepare the standard
properly.
• Set the standard
properly.
• Unless check is desired,
input a value within
- 32000 to 32000 for
"standard 1 absorbance
range" on the parameter
registration menu 1
screen.
• Replace the seal piece
of pipettor.
• Check fastening of
joints.
• Unless check is desired,
input 32000 for
"duplicate limit
absorbance" on the
parameter registration
menu 1 screen.
(cont d)
'