Technical data

SightLine Applications Command and Control

0 = don't

1 = do

Start Tracking (0x08) (Deprecated)

See Modify Tracking (0x05)

Command the system to start a track. Column and Row coordinates correspond to the pixel coordinate

within a 640x480 frame of video in display (stabilized) coordinates. The origin is in the upper left

corner of the image with values increasing down and to the right. Up to 5 tracks may be

simultaneously engaged.

Byte offset Description

2 Packet length = 7

3 Packet type = 0x08

4 0..639: Column coordinate, LSB

5 Column coordinate, MSB

6 0..479: Row coordinate, LSB

7 Row coordinate, MSB

8 Track Modifier

Bit 0: 0: cursor only

1: initiate tracking

Bit 1: 0 – Default

1 – Rotate and zoom coordinates with

display

Bit 2: 0 – Default

1 – Replace all tracks with one track at

designated coordinates (SLA-2000 only)

Bit 3: 0 – Default

1 – Add New (SLA-2000 only)

Bit 4: 0 – Default

1 – Replace Near (SLA-2000 only)

Bit 5: 0 – Default

1 – Designate Moving Target Near as

Primary (SLA-2000 only)

Bit 6 0 – Default

1 – Kill Near (SLA-2000 only)

Modify Tracking (0x05)

Command the system to modify tracking: start a track, stop a track, designate a track as primary, nudge