Source Select Shutters

Table of Contents:

NOTE: this page was written for the case of all shutters controlled by a Galil RIO. We have since returned to running the spectrometer shutters off the Archons (to simplify timing coordination), but this page hasn’t been updated to match that yet.

Relevant Devices

Description	Qty	Source	Part Number
Shutter Computer Interface	2	Galil	Galil RIO-47142
Power Supply	2	Galil	PS-2.50-24
Timed Shutter Driver	2	Uniblitz	VED24
Source Select Shutter	2	Uniblitz	RS20B
Source Select Shutter Power Supply	2	Digikey	102-3595-ND
adapter	2	Digikey	839-1145-ND
Calibration Unit Timed Shutter	1	Uniblitz	DSS25
Scrambler Timed Shutter	1	Uniblitz	NS65B
Timed Shutter Cable (custom)	2	Uniblitz	to be added
Source Select Shutter Cable (custom)	2	KPF	KPF-
custom cables, winchesters, DB44

Relevant Functional Block Diagram

Software Actions

Action

Notes

1

Open shutter

All shutters are bi-stable

2

Close shutter

All shutters are bi-stable

3

Required Adjustable Settings

Setting	When Needed			Notes
	Build	Observing	Maintenance

Required Telemetry

	Parameter	Report Frequency	Purpose
1	Science Select Shutter state	On state change	Knowledge of shutter being open or closed
2	Sky Select Shutter state	On state change	Knowledge of shutter being open or closed
3	Spectrometer Shutter state	On state change	Knowledge of shutter being open or closed
4	Calibration Shutter state	On state change	Knowledge of shutter being open or closed
5	Ca HK Shutter state	On state change	Knowledge of shutter being open or closed

Required Alarms

	Parameter	Threshold	Notes
1
2

Relevant Datasheets & Manuals

	Description	Source
1	Uniblitz VED24 Datasheet	https://www.uniblitz.com/products/ved24-shutter-driver/
2	Uniblitz VED24 Manual	https://www.uniblitz.com/products/ved24-shutter-driver/
3	Uniblitz RS20B shutter datasheet	https://www.uniblitz.com/products/rs20b/
4	Galil RIO 471xxx datasheet	http://www.galilmc.com/plcs/remote-io/rio-471xx
5	Uniblitz NS65B shutter datasheet	https://www.uniblitz.com/products/ns65b/