Community College of Allegheny County OCS Security Camera System Pittsburgh, PA
2) Up/Left arrow button : This button shall move the cursor up or left, or increase the value displayed when changing parameters. This button shall also be used to scroll up for navigating the screens. 3) Down/Right arrow button : This button shall move the cursor down or right, or decrease the value displayed when changing parameters. This button shall also be used to scroll down for navigating the screens. 4) Enter button : This button shall enter the next level menu or confirm the parameter changes. b. Display Menu Structure: The UPS display shall have the following menu structure with the following status and configuration screens. 1) UPS Flow Screen (Default screen): The UPS flow screen shall be the default screen after system start-up. It shall display an overview screen showing status information, the active (green) power path, and non-working power path (gray). Details in this default screen include operating mode, the input voltage and frequency; output voltage and frequency; battery capacity and estimated battery time remaining; loading percentage. To prolong display life, the UPS LCD display will dim and display a screen saver after two minutes of no user interaction if there is no active alarm. Pressing the ENTER shall wake up the display and this action shall not perform any operation. If an alarm or fault occurs, the display shall also wake up the display. 2) Main Menu: The main menu shall list 6 submenu selections, from left to right, then top to bottom:
Status Settings Control
Log
About
Maintenance
3) Status: The UPS status screens shall provide the following information:
Input
L-N voltage (V) L-N current (A) Frequency (Hz) Power Factor Energy (kWh)
Input black count (count of input voltage lost) Input brown count (count of PFC overload to battery)
Bypass
L-N voltage (V)
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