Hardware Watchdog Chassis Analysis and Review

Document #:

LIGO-T1500405-v1

Document type:

T - Technical notes

Abstract:

In response to a review of the final design of the Hardware Watchdog, and analysis and review of the hardware was conducted at Caltech. The focus of the review was to understand:

1. Issues relating to unreliable boot operation in the field
2. Mitigation for an undesirable logic level choice with respect to the safe reporting of status
3. Installed code revision verification

Files in Document:

• PDF Version (HardwareWatchdogAnalysis_v1.pdf, 297.0 kB)

Other Files:

• Word Version (HardwareWatchdogAnalysis_v1.docx, 855.9 kB)

Topics:

• System Engineering

Authors:

• Rich Abbott
• Benjamin Abbott
• Vernon Sandberg
• David Barker
• Richard McCarthy

Keywords:

HWWD watchdog

Referenced by: