Lucent Technologies 7820-0802-003 Configuring the Thermal Profile for Fan Tray Operations APX

Configuring the Thermal Profile for Fan	3
Tray Operations (APX 8000)

Overview of the Thermal profile for fan tray operations . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Thermal status reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Overview of the Thermal profile for fan tray operations

On the APX 8000, an on-board digital temperature chip on the shelf controller and a temperature device at the intake end of the fan controller are used to measure incoming ambient air temperature. The APX 8000 fan tray is capable of running at different speeds, and of adjusting as needed to dissipate system heat or reduce unnecessary fan noise.

You control fan tray operations by configuring the Thermal profile. Following are the relevant settings, shown with default values:

[in THERMAL]

fantray-lownoise-rpm = 2500 operation-mode = full-speed-only low-temperature-trigger = 34 high-temperature-trigger = 40 alarm-temperature-trigger = 55

Parameter	Specifies
Fantray-Lownoise-RPM	Number of revolutions per minute (RPM) of the fan tray when
	the low noise speed has been selected. Valid values range from
	2000 to 3000, with a default of 2500.

APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide 3-1