within the psip generator 102 do not necessarily correspond to discrete hardware units rather the units 102 and 104 can represent functional units corresponding to program segments of the software that can embody the invention the interface unit 104 can generate a graphical user interface gui that operates to receive at least one issuance parameter for like psip tables e g etts or eits that do not all have an issue interval assigned by the a 65 standard such an interface will be described in more detail below with regard to fig2 the non uniform interval calculation unit 106 is operable to determine non uniform issuance intervals for ones of the like psip tables that do not have an assigned interval based upon the issuance parameter s received via the interface unit 104 fig2 is an example image of a dialog window 200 a gui that can be generated by the interface unit 104 according to the invention in fig2 the dialog window 200 can include a cycle time settings tab 202 a miscellaneous settings tab 204 a ftp periodic update controls tab 206 an u201c apply settings u201d button 226 a u201c defaults u201d button 228 a u201c refresh u201d button 230 and a u201c close u201d button 232 the position of the cursor can be indicated via the reverse highlighting 234 the cycle time settings tab 202 can include a u201c cycle times in seconds for eits u201d region 208 a u201c cycle times in seconds for psip tables u201d region 210 a u201c cycle times in.