5Key Reference
110 N9342C/43C/44C User’s Guide
Delta Ref
Key access: [MARKER] > {More} > {Delta Ref}
Adjust the delta marker reference level manually. 
This function is exclusive when marker mode is set 
to delta.
All Off
Key access: [MARKER] > {More} > {All Off}
Turns off all of the markers, including markers 
used for signal track and demodulation. The 
marker annotation is also removed.
Logging Start/Stop
Key access: [MARKER] > {More} > {Logging Start/Stop}
Press this softkey to start recording the marker 
value, GPS information to a CSV file. The 
frequency and amplitude value of the marker will 
be continuously recorded in the file.
Press this softkey (Logging Stop) again to stop 
logging and save the CSV file immediately. With 
option GPS, you can convert the CSV file into KML 
file in HSA PC software for review the GPS 
location in Google Earth on PC.