1700AS0001 TCS Spec.pdf

Doc No. SALT1700AS0001 Issue A
TCS Specification
The emergency power source shall has the following features:
• It will become active within 30s of a general power failure and will remain on until
manually turned off
• The quality of power (voltage, frequency drift, harmonics) will be no worse than the
normal electrical supply
• At least the following error conditions will also be reported to the TCS: low fuel, low oil
pressure, generator fault, low voltage, over-current, system overheating, power status
(normal, emergency, off).
If the generator fails to start after a power failure an operator warning shall be generated so
that critical software processes can be shut down.
5.5.12 Data security
a. The TCS shall allow various users to log in with different levels of security. The following level
of access are required, each with their own particular restrictions:
• SA
• SO
• Maintainer
• Administrator
• PI
• Co-Investigator
• Partner
• Guest
b. A firewall shall protect the SALT network from unauthorised access outside the site.
5.5.13 Future growth
The following potential growth areas shall be borne in mind during the design process and
accommodated where this does not have an impact on the achievement of the immediate
performance, schedule and cost requirements.
5.5.13.1 PHASING
The primary mirror array of SALT may be required to be phased in future, to make use of the
advantages of Adaptive Optics (AO).
5.5.13.2 IMPROVED OPTICAL PERFORMANCE
The optical performance of SALT may be improved by using the latest technology mirror
coatings.
5.5.13.3 IR PFIS
A near IR channel may be added to the PFIS.
5.5.13.4 REMOTE OBSERVING
The whole or parts of the SALT control room may be required to be duplicated at the SAAO in
Cape Town, to allow remote operating of SALT.
5.5.13.5 ADDITIONAL INSTRUMENTS
Specific provisions shall be made in the TCS architecture, network sizing and MMI design to
facilitate the addition of more science instruments during SALT’s life-time.
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