5.3.1 Connections ............................................................................................ 5-61
5.3.2 VDR I/F kit ................................................................................................ 5-62
5.4 INSTALLATION OF SUB-OPERATION UNIT AND EXPANSION OF TRACKBALL 5-63
5.4.1 Sub Operation Unit ................................................................................. 5-63
5.4.2 Expansion of trackball ............................................................................ 5-64