DD+DIS150.05E
Repair and Service
Adjustments and Calibrations
DOCUMENT CONTROL NOTE:
The controlled version of this document resides on MedNet. Any printed copy of this document is uncontrolled.
2.5.6
Performing the Afssaps / EUREF Calibration Check
(1) Leave the service command session.
(2) Connect the printer network cable to the network outlet at the wall.
(3) Consult the “connectivity release document” for the modality connection to
DRYSTAR 5302 for the proper modality configuration to print the “TG18-PQC
modified 4” test image.
(4) Print the “TG18-PQC modified 4” test image from the modality.
(5) Measure the 18 density values and enter them in the Afssaps / EUREF
Calibration Check Excel sheet. See Figure 17.
EUREF/AFSSAPS GSDF check for Genrad printers
Step 3
: Check, that deviation is < 10% for all values. If 1 (or more) value > = 10% go to Step 4
Step 2
: Adjust Illumination and refected light used for printing the ima
Step 1
: Enter the measured values here
e
2500
"Illumination cd/m
2"
Laser:
10
"reflected (ambient) light"
Measured luminance value
s
DICOM 3.14 standard
testpattern
Luminance
JND
deviation compared
testpattern
Luminance
JND
dL/L
dL/L
TG18-LN12-# p-value
L
j(L)
dL/L
to DICOM (%)
TG18-LN12 p-value
L
j(L)
dL/L
+15%
-15%
Step # on TG18 image Measured OD LuminanceStep # in CFC calibration screen on printer
1
0
11,98582
233,211
1
0
11,99
233,211
1
3,1
11,98582
1 7
2
240
17,90569
272,089
0,396
2,3
2
240
17,74
271,117 0,387
0,445
0,329
2
2,5
17,905694
16
3
480
25,06399
307,434
0,333
6,5
3
480
25,43
309,023 0,356
0,410
0,303
3
2,22
25,06399
15
4
720
34,43093
343,017
0,315
5,6
4
720
35,61
346,929 0,333
0,383
0,283
4
2,01
34,430931
14
5
960
47,83903
382,004
0,326
3,3
5
960
48,95
384,835 0,316
0,363
0,268
5
1,82
47,839031
13
6
1200
67,27169
424,518
0,338
12,0
6
1200
66,33
422,741 0,301
0,347
0,256
6
1,64
67,271691
12
7
1440
90,89841
463,665
0,299
3,0
7
1440
88,83
460,648 0,290
0,334
0,247
7
1,49
90,898414
11
8
1680
121,6709
502,866
0,290
3,0
8
1680
117,87
498,554 0,281
0,323
0,239
8
1,35
121,6709
10
9
1920
157,2109
538,238
0,255
6,8
9
1920
155,23
536,460 0,274
0,315
0,233
9
1,23
157,21091
9
10
2160
199,6444
571,900
0,238
11,1
10
2160
203,16
574,366 0,268
0,308
0,227
10
1,12
199,64439
8
11
2400
260
609,777
0,263
0,0
11
2400
264,57
612,272 0,263
0,302
0,223
11
1
260
7
12
2640
339,5642
648,671
0,265
2,7
12
2640
343,13
650,179 0,259
0,297
0,220
12
0,88
339,56418
6
13
2880
454,5699
691,754
0,290
13,5
13
2880
443,52
688,085 0,255
0,294
0,217
13
0,75
454,56985
5
14
3120
582,7169
728,841
0,247
2,2
14
3120
571,73
725,991 0,253
0,290
0,215
14
0,64
582,71691
4
15
3360
731,0079
762,970
0,226
9,9
15
3360
735,41
763,897 0,250
0,288
0,213
15
0,54
731,00788
3
16
3600
938,8381
800,887
0,249
0,1
16
3600
944,32
801,803 0,249
0,286
0,211
16
0,43
938,83807
2
17
3840
1206,575
839,125
0,250
0,9
17
3840
1210,97
839,709 0,247
0,285
0,210
17
0,32
1206,5752
1
18
4080
1551,488
877,616
0,250
1,5
18
4080
1551,49
877,616
0,247
0,284
0,210
18
0,21
1551,4875
0
Result contrast response printer
lineair relation between p-value and JN
a: 0,157942
b: 233,2106
Step 4
: Enter these values in CFC* screen on print
Only required if deviation >= 10% (see step 2)
* CFC = Compliance Film Calibration
Edition 1, Revision 1
DRYSTAR 5302
Chapter 3.6 / 27
05-2009 Type
5366/100
Agfa Company Confidential
0,100
0
1000
2000
3000
4000
5000
p-values
dL
/
1,000
L
left monitor
DICOM 3.14
+/- 10%
deviation compared
to DICOM (%)
Figure 17
(6) Check column “Deviation compared to DICOM (%)”: All values have to be < 10%:
- If all values are < 10%, the procedure is finished.
- If one (or more) value(s) are
≥
10 %, proceed with next section.
(7) Repeat this step for the other film tray.
