Unipulse F320 - ZERO Key Valid; Invalid

6.SETTING OF FUNCTIONS
60
6-13. ZERO Key Valid / Invalid
This function validates/invalidates the operation of the ZERO key.
1) Select setting mode 3.
2)
Select zero key valid / invalid.
Use and keys to set the zero key valid / invalid,
then use key to validate the setting.
To return to the indicated value display, press key.
FNC
＋ －
ZERO ZERO
Press three times.
HOLD
CAL
GAIN
CAL
HOLD
FNC
＋ －
ZERO Key Valid / Invalid
Zero Key Operation
1 : Invalid
0 : Valid