Probe sequence max represents the maximum number of probes in a single access attempt.
Probe sequence max is sent in the Configuration Request message (see TAP/ETAP Data Connection Call Flow ).
Probe sequence max is a "Configurable Attribute" that is configured during the Session Negotiate State . Its value can not be changed when a session is open and Call Limit Mode is on. If probe sequence max is changed when a connection is open, the connection will be closed. You will have to re-open the connection.
GPIB Command: CALL[:CELL]:APARameter:PROBe:SEQuence[:MAXimum]
Manual Operation: How Do I Change Access Parameters?