LD 30
When invoked manually on systems, the Overlay may be used to:
• conduct a complete test, as when the program is invoked automatically,
except for switching the clocks
• conduct a test on a specific IPE shelf
• get the enable/disable status of network loops
• enable or disable network loops
• clear alarm indications and the maintenance display
• download peripheral software on superloops
• clear contents of the Controller maintenance display
• read contents of the Controller maintenance display
When invoked manually on a Small System, the program may be used to:
• conduct a complete test, as when the program is invoked automatically,
except for switching the clocks
• clear alarm indications and the maintenance display
• perform a signaling test on a specific card or unit
• perform a continuity test and signaling test on the Small System IPE
shelf