Modulated Scan Mode Type Attribute
| Tag | (300A,0309) |
|---|---|
| Type | Conditionally Required (1C) |
| Keyword | ModulatedScanModeType |
| Value Multiplicity | 1 |
| Value Representation | Code String (CS) |
Defines the specialization of a modulated scan mode.
Defined Terms:
- STATIONARY
-
The Meterset is delivered while the beam spot is at the specified position. The beam is always turned off when the position changes.
- LEAPING
-
The Meterset is mainly delivered at the specified spot position, while some of the Meterset is delivered while the spot is moved from the prior spot position. This mode also supports turning off the beam between spot positions.
- LINEAR
-
The Meterset is delivered uniformly while the beam spot position changes. This mode also supports turning off the beam between line segments.
Note
The Defined Term MIXED was previously defined. It is now retired.
Required if Scan Mode (300A,0308) is MODULATED_SPEC.
See Section C.8.8.25.8.
Section C.8.8.25.8
C.8.8.25.8 Scan Spot Maps
The Scan Spot Position Map (300A,0394) and Scan Spot Meterset Weights (300A,0396) shall be used as follows.
For a Modulated Scan Mode Type (300A,0309) value of LEAPING or LINEAR, switching off the beam shall be prescribed and reported using a Meterset Weight of zero at the next Scan Spot Position.
The following specifies for each value of Modulated Scan Mode Type (300A,0309) the definition of the map which is included in the Control Point 1 having Cumulative Meterset Weight (300A,0134) = 20, followed by a Control Point 2 having Cumulative Meterset Weight (300A,0134) = 40.
If Modulated Scan Mode Type (300A,0309) is STATIONARY:
|
Position (X,Y) |
(1.0, 2.0) |
(6.0, 2.0) |
(6.0, 3.0) |
(2.0, 3.0) |
(2.0, 5.0) |
(7.0, 5.0) |
|---|---|---|---|---|---|---|
|
Meterset Weights |
2 |
6 |
1 |
5 |
3 |
3 |
Delivery Description:
-
The beam is positioned at Scan Spot Position (1.0, 2.0).
-
The beam is delivered with a Meterset Weight of 2.
-
The beam is switched off and positioned at Scan Spot Position (6.0, 2.0).
-
The beam is delivered with a Meterset Weight of 6.
-
The beam is switched off and positioned at Scan Spot Position (6.0, 3.0).
-
The beam is delivered with a Meterset Weight of 1.
-
The beam is switched off and positioned at Scan Spot Position (2.0, 3.0).
-
The beam is delivered with a Meterset Weight of 5.
-
The beam is switched off and positioned at Scan Spot Position (2.0, 5.0).
-
The beam is delivered with a Meterset Weight of 3.
-
The beam is switched off and positioned at Scan Spot Position (7.0, 5.0).
-
The beam is delivered with a Meterset Weight of 3.
If Modulated Scan Mode Type (300A,0309) is LEAPING:
|
Position (X,Y) |
(1.0, 2.0) |
(6.0, 2.0) |
(6.0, 3.0) |
(2.0, 3.0) |
(7.0, 5.0) |
(7.0, 5.0) |
|---|---|---|---|---|---|---|
|
Meterset Weights |
1 |
5 |
4 |
6 |
0 |
4 |
Delivery Description:
-
The beam is positioned at Scan Spot Position (1.0, 2.0).
-
The beam is delivered with a Meterset Weight of 1.
-
The beam is moved and positioned at Scan Spot Position (6.0, 2.0).
-
The beam is delivered until a Meterset Weight of 5 is reached (including the Meterset delivered when the beam position changes).
-
The beam is moved and positioned at Scan Spot Position (6.0, 3.0).
-
The beam is delivered until a Meterset Weight of 4 is reached (including the Meterset delivered when the beam position changes).
-
The beam is moved and positioned at Scan Spot Position (2.0, 3.0).
-
The beam is delivered until a Meterset Weight of 6 is reached (including the Meterset delivered when the beam position changes).
-
The beam is switched off and positioned at Scan Spot Position (7.0, 5.0).
-
The beam is delivered with a Meterset Weight of 4.
If Modulated Scan Mode Type (300A,0309) is LINEAR:
|
Position (X,Y) |
(1.0, 2.0) |
(6.0, 2.0) |
(6.0, 3.0) |
(2.0, 3.0) |
(7.0, 5.0) |
(7.0, 5.0) |
|---|---|---|---|---|---|---|
|
Meterset Weights |
0 |
6 |
4 |
6 |
0 |
4 |
Delivery Description:
-
The beam is positioned at Scan Spot Position (1,.0 2.0).
-
The beam is continuously delivered with a Meterset Weight of 6, while being moved from Scan Spot Position (1.0, 2.0) to Scan Spot Position (6.0, 2.0).
-
The beam is continuously delivered with a Meterset Weight of 4, while being moved from Scan Spot Position (6.0, 2.0) to Scan Spot Position (6.0, 3.0).
-
The beam is continuously delivered with a Meterset Weight of 6, while being moved from Scan Spot Position (6.0, 3.0) to Scan Spot Position (2.0, 3.0).
-
The beam is switched off and positioned at Scan Spot Position (7.0, 5.0).
-
The beam is delivered without moving from Scan Spot Position (7.0, 5.0) with Meterset Weight of 4.