HF2 errors

HF2 is the generic term for a class of errors that are caused by a communication failure between the NION processor and CobraNet CM-1 module. This type of error may appear as one of the following in a NION error log:

cm1 not detected : /dev/pion/cm10: timeout waiting for HF2 to go high
peek aborted after 5 tries: /dev/pion/cm10: timeout waiting for HF2 to go high
poke/peek driver exception : /dev/pion/cm10: timeout waiting for HF2 to go high

A hardware handshake line between the NION and CM-1 has failed to operate correctly, i.e. the CM-1 has become unresponsive.

In this section

The causes of HF2 errors

See also

Cannot access NION using IP address or IP address is unknown

Front panel LED indicators

Including debug messages in the log

Low voltage warning

NION locking up or rebooting spuriously