T701 Update: V12 from V111



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       *                                                                   *
       *       T V S 7 0 1 B   P R O G R A M M I N G   U P D A T E         *
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       *              Changes in Version 13 from Version 11                *
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       1.  _N_e_w__C_o_m_m_a_n_d_s


       Several changes have been made to the functionality and pro-
       gramming of the TVS701B with revision 12. These include the
       ability to disable the link timer independently of the main
       timer, and the ability to perform 71/72 (temporary link
       access) and 05/06 (timer on/off) functions on downward tran-
       sitions of input bits 0 and 1 respectively.

       All new commands require control priviledges (level 1).


       1.1  _8_1_0_,__8_2_0__-__C_o_n_t_r_o_l__L_i_n_k__T_i_m_e_r_s

       Normally the 701 will ignore Link COR after 3 minutes of
       continuous signal present. It will also cease exerting Link
       PTT after 3 minutes of continuously exerting it. The 810
       command disables those timeouts.  The 820 command cancels
       the effect of the 810 command, enabling the link timers.


       1.2  _8_1_1_,__8_2_1__-__A_u_t_o__T_e_m_p_o_r_a_r_y__O_n_-_L_i_n_k

       If "811" is issued, inputs 0 and 1 acquire additional func-
       tionality, controlling the "temporary link enabled" state of
       the system. If input 0 goes low, the system will change
       modes as if the "71" command had been issued. If input 1
       goes low, the system will change modes as if the "72" com-
       mand has been issued. This feature is intended to allow an
       auxiliary device, such as a CTCSS decode, to controltem-
       porary link access. If "812" is issued, this feature is dis-
       abled.
















                        T701 Update: V12 from V112



       1.3  _8_1_2_,__8_2_2__-__A_u_t_o__T_i_m_e_r_s

       If the "812" command is given, inputs 0 and 1 acquire addi-
       tional functionality, controlling the state of the timers.
       If input 0 goes low, the timers will be disabled, as if com-
       mand "06" had been issued (although it may or may not be
       saved in EEPROM).  If input 1 goes low, the timers will be
       enabled, as if command "05" had been issued (although it may
       or may not be saved in EEPROM). This feature may be used
       even if command "811" has been issued. If the "822" command
       is given, it reverses the effect of "812".