Prerequisites
Table 1. Personnel requirements Required persons
Preliminary requirements
Procedure
Finalization
1
Not Applicable
30 minutes
Not Applicable
Overview
This module explains how to run the “HHS Scans” procedure,
which runs an automated scan sequence and measures the kV and mA at times
during the scan to ensure that the system is properly calibrated.
Last Revised:
November, 2004
Procedure Launch the GENERATOR TOOL from the Service Desktop. Launch the HHS SCANS tool. Run the sequence. The scan data will be stored on the system and can be viewed using the “HHS Reports” tool. Record results in the appropriate GE e4879 Certified Component Verification form or GE Data Report Planned Maintenance Schedule form, and identify the results by below tables.
Table 2. Small Focal Spot Protocol Parameters and Limits Technique
mA @5ms
mA
kV
Time
kV
mA
Time (sec)
LSL
USL
LSL
USL
LSL 2.0%
USL 2.0%
LSL 1.0%
USL 2.0%
80
10
1.00
8.0
12.0
9.2
10.8
78.4
81.6
0.99
1.02
80
50
1.00
42.0
58.0
48.0
52.0
78.4
81.6
0.99
1.02
80
100
1.00
84.5
115.5
96.5
103.5
78.4
81.6
0.99
1.02
80
200
1.00
169.5
230.5
193.5
206.5
78.4
81.6
0.99
1.02
80
300
1.00
254.5
345.5
290.5
309.5
78.4
81.6
0.99
1.02
100
10
1.00
8.0
12.0
9.2
10.8
98
102
0.99
1.02
100
50
1.00
42.0
58.0
48.0
52.0
98
102
0.99
1.02
100
100
1.00
84.5
115.5
96.5
103.5
98
102
0.99
1.02
100
200
1.00
169.5
230.5
193.5
206.5
98
102
0.99
1.02
100
310
1.00
263.0
357.0
300.2
319.8
98
102
0.99
1.02
120
10
1.00
8.0
12.0
9.2
10.8
117.6
122.4
0.99
1.02
120
50
1.00
42.0
58.0
48.0
52.0
117.6
122.4
0.99
1.02
120
100
1.00
84.5
115.5
96.5
103.5
117.6
122.4
0.99
1.02
120
200
1.00
169.5
230.5
193.5
206.5
117.6
122.4
0.99
1.02
120
335
1.00
284.25
385.75
324.5
345.6
117.6
122.4
0.99
1.02
140
10
1.00
8.0
12.0
9.2
10.8
137.2
142.8
0.99
1.02
140
50
1.00
42.0
58.0
48.0
52.0
137.2
142.8
0.99
1.02
140
100
1.00
84.5
115.5
96.5
103.5
137.2
142.8
0.99
1.02
140
200
1.00
169.5
230.5
193.5
206.5
137.2
142.8
0.99
1.02
140
335
1.00
284.25
385.75
324.5
345.6
137.2
142.8
0.99
1.02
Table 3. Large Focal Spot Protocol Parameters and Limits Technique
mA @5ms
mA
kV
Time
kV
mA
Time (sec)
LSL
USL
LSL
USL
LSL 2.0%
USL 2.0%
LSL 1.0%
USL 2.0%
80
100
1.00
84.5
115.5
96.5
103.5
78.4
81.6
0.99
1.02
80
200
1.00
169.5
230.5
193.5
206.5
78.4
81.6
0.99
1.02
80
400
1.00
339.5
460.5
387.5
412.5
78.4
81.6
0.99
1.02
80
600
1.00
509.5
690.5
581.5
618.5
78.4
81.6
0.99
1.02
80
675
1.00
573.25
776.75
654.30
695.80
78.4
81.6
0.99
1.02
100
100
1.00
84.5
115.5
96.5
103.5
98
102
0.99
1.02
100
200
1.00
169.5
230.5
193.5
206.5
98
102
0.99
1.02
100
400
1.00
339.5
460.5
387.5
412.5
98
102
0.99
1.02
100
600
1.00
509.5
690.5
581.5
618.5
98
102
0.99
1.02
100
770
1.00
654.0
886.0
746.4
793.6
98
102
0.99
1.02
120
100
1.00
84.5
115.5
96.5
103.5
117.6
122.4
0.99
1.02
120
200
1.00
169.5
230.5
193.5
206.5
117.6
122.4
0.99
1.02
120
400
1.00
339.5
460.5
387.5
412.5
117.6
122.4
0.99
1.02
120
600
1.00
509.5
690.5
581.5
618.5
117.6
122.4
0.99
1.02
120
750
1.00
637.0
863.0
727.0
773.0
117.6
122.4
0.99
1.02
140
100
1.00
84.5
115.5
96.5
103.5
137.2
142.8
0.99
1.02
140
200
1.00
169.5
230.5
193.5
206.5
137.2
142.8
0.99
1.02
140
400
1.00
339.5
460.5
387.5
412.5
137.2
142.8
0.99
1.02
140
550
1.00
467.0
633.0
533.0
567.0
137.2
142.8
0.99
1.02
140
650
1.00
552.0
748.0
630.0
670.0
137.2
142.8
0.99
1.02
Ensure all measurement results in HHS Report are within the specified limits. For failed results, isolate root cause by running the following procedures in order shown below and perform appropriate corrective action. Meter Verification (Pro, RT, VCT) HV Tank Feedback Resistor Verification (Pro, RT, VCT) Filament Calibration
Finalization
Store data form with system history records.