Page 5–24   
UPLC-II™ System Manual
Figure 5–10. Example of the Inputs on the I/O Tab on the Settings Page (ON/OFF Mode)
                      ON/OFF  FSK
Directional Comparison    Phase Comparison  Unblocking-2F     Phase Comparison  POTT/DTT-2F          3-Freq.               4-Freq.
Carrier Start                           Carrier Start             UB Key                    PC Key                Trip Key               LR Key                A Key
Carrier Stop                           Carrier Stop        (TX) Power Off          Boost (52B)       (TX) Power Off        DTT Key              B Key
Low Level Key                     Low Level Key           Trip Test               SOE Event 1            Trip Test        (TX) Power Off  (TX) Power Off
Checkback Alarm Reset  Checkback Alm Reset  Disable Trip Test          SOE Event 2 Disable Trip Test         Trip Test          Boost (52B)
Checkback Initiate            Checkback Initiate     Boost (52B)            SOE Event 3         Boost (52B)  
Disable Trip Test    SOE Event 1
SOE Event 1                         SOE Event 1        SOE Event 1                                        SOE Event 1       Boost (52B)      SOE Event 2
SOE Event 2                         SOE Event 2        SOE Event 2                                        SOE Event 2      SOE Event 1     SOE Event 3
SOE Event 3                         SOE Event 3        SOE Event 3                                        SOE Event 3      SOE Event 2  
Loopback Test Initiate  Loopback Test Initiate                                                                               SOE Event 3  
Table 5–12. Input Selection Choices
LR = Line Relaying (POTT or UB)   UB = Unblock  PC = Phase Comparison