User`s guide

Description
This command sets the LAN keepalive timeout which specifies a number of
seconds to keep a LAN socket active. If there has been no activity on the
connection after the specified timeout, the instrument will send keepalive
probes to the client to determine if it is still available. After the specified
timeout, the connection will be marked as "down" or "dropped".
If you specify a timeout value, it is recommended that you use the
largest value that still meets the application's need for unreachable
client detection. Smaller timeout values will generate more
keepalive probes thus using more of the available network
bandwidth.