Looks like what I was looking for is in the manual:
4.0 Location and Operation
4.1 Location of the flash
The communication between master flash and remote flash is by infra-red light (IR).
The location between master flash and remote flash is critical to establishing good
communication. Make sure there is a good light path between master flash and
remote flash.
Indoor Use: In small rooms, bounce light is often enough to send signals from the
master flash to Qnexus and Qflash. A test flash from the master flash to all remote
flashes will prove this. In larger indoor spaces, such as reception halls, churches, or
arenas, direct line-of-sight between master flash and remotes will be necessary as
is usual for infra-red wireless systems. See Outdoor Use below for tips.
Outdoor Use: Aim the sensor of Qnexus directly towards the master flash. The diagrams
below show how to rotate the Qflash lower body and head to achieve line-ofsight
orientation to the master flash.
4.1 Location of the flash
The communication between master flash and remote flash is by infra-red light (IR).
The location between master flash and remote flash is critical to establishing good
communication. Make sure there is a good light path between master flash and
remote flash.
Indoor Use: In small rooms, bounce light is often enough to send signals from the
master flash to Qnexus and Qflash. A test flash from the master flash to all remote
flashes will prove this. In larger indoor spaces, such as reception halls, churches, or
arenas, direct line-of-sight between master flash and remotes will be necessary as
is usual for infra-red wireless systems. See Outdoor Use below for tips.
Outdoor Use: Aim the sensor of Qnexus directly towards the master flash. The diagrams
below show how to rotate the Qflash lower body and head to achieve line-ofsight
orientation to the master flash.
I wish it wasn't so..
