[INSTRM-2145] update dither axis software limit Created: 18/Jan/24  Updated: 20/Jan/24

Status: Open
Project: Instrument control development
Component/s: pfs_instdata
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Normal
Reporter: fmadec Assignee: fmadec
Resolution: Unresolved Votes: 0
Labels: SPS, near-term
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Sprint: PreEngRun15Mar

 Description   

there is a request to increase the current software limit for the hexapod Z axis which corresponds to the dither axis.
a verification on site will be done, but that should be possible.
one point to verify is the cable routing for temperature sensors

 Comments   
Comment by arnaud.lefur [ 18/Jan/24 ]

In the context on the drift flats with engineering fibers, to cover all the pixels, we should be already close to what we need.
There are 16 engineering fibers, so 4176/16 = 261 pixels, so +- 130 pixels ( +- 4.5 mm)
But the slit needs to be at constant speed on that range, we need to add margin to account for the acceleration / deceleration phase.

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