Chapter 20: Maintenance
Temperature Ranges
phn-3963_008v000
Page 20-2
Temperature Ranges
The following are the permissible unit temperature ranges for PTP 850E.
•
-33
°
C to 55
°
– Temperature range for continuous operating temperature with high reliability.
•
-45
°
C to 60
°
C
– Temperature range for exceptional temperatures, tested successfully, with limited margins.
To display the current unit temperature, see
•
The permissible IDU humidity range is 5%RH to 100%RH
Troubleshooting Tips
•
If during or right after a software upgrade the message
Your session has expired, please login again
appears
and you cannot log in, it is recommended to refresh the Web EMS page (F5) after completion of the upgrade.
If pressing F5 does not help, clear the browser’s cache by pressing Ctrl+Shift+Delete.