JC Systems 620A Reference Manual page 22

Section 1-4 Config-Tune-Calibrate
From the Main Menu select Item 4
Push <4>.
Section 4 - CONFIG-TUNE CALIBRATE
4-1 CONFIGURE PROGRAMMER
4-2 CONFIGURE CONTROLLERS
4-3 CALIBRATE INPUTS
4-4 CALIBRATE OUTPUTS
Push <1> for CONFIG.PROGRAMMER
<2> for CONFIGURE CONTROLLERS
<3> for CALIBRATE INPUTS
<4> for CALIBRATE OUTPUTS