desired if there will only be one fall operator 172 one ergonomic track 54 must be installed 174 and one srl 60 must then be installed 176 if two tracks are desired if there will be two fall operators 167 168 two ergonomic tracks 54 must be installed 169 and two srls 60 must then be installed 170 if the working crane in place is a new crane with no need for modernization to support the fall system 152 178 the following installations must occur if the working crane is a single girder crane 180 182 two ergonomic tracks 54 must be installed 184 and self retracting lifelines srls must then be installed 186 if the working crane is a double girder crane 188 190 ergonomic tracks 54 must be installed as follows if only one track is desired if there will only be one fall operator 194 one ergonomic track 54 must be installed 196 and one srl 60 must then be installed 198 if two tracks are desired if there will be two fall operators 192 200 two ergonomic tracks 54 must be installed 202 and two srls 60 must then be installed 204 fig1 illustrates the controls setup of the fall system 2 if the working crane is new 252 254 a floor transmitter must be selected 256 there are three options for a floor transmitter a hand held version 258 two joy sticks 260 or three joy sticks 262 additionally the safety radio interface system sris must.