85 Details on Commander flashoperation and shooting procedures5 Setting a channel number on the Commander unit.Set the communication channel through which theCommander and remote flash units exchangedata.• Select one of the four available channels. The samechannel number is set to all groups A, B and C.• Press the [SEL](FUNC.) button to display the channelnumber (blinking). Press the [] or [] button tochange the channel number. Press the [SEL](FUNC.)button once again and the channel number will stopblinking. The last channel number to blink is the onethat has been set automatically.• The channel number blinks during adjustment andstops after blinking six times unless an adjustment ismade. The last channel number to blink is the one thathas been automatically set.6 Setting a channel number on the remote flashunit(s)Select one of the four available channels. Be sureto set the same channel number as set on theSU-800.• Be sure to set the channel number of the remote flashunit(s) to 3 when using a Nikon D70-Series camera,otherwise the remote flash unit(s) will not fire.• With the SB-R200, rotate the [CHANNEL] select dial toset the channel number.• With the SB-800 or SB-600, read the instructionmanual for each model.7 Setting a group on the remote flash unit(s)Set the group of remote flash unit(s) to A, B or C.Once set, the remote flash units will operateaccording to the controls for each group as set onthe Commander.• Set the group of the remote unit(s) to group A whenusing a Nikon D70-Series camera, otherwise the flashunit(s) will not fire.• With the SB-R200, rotate the [GROUP] select dial toset the group name.• With the SB-800 or SB-600, read the instructionmanual for each model.CHANNEL23 41GROUPABC