RadioPopper P1 Owner's Manual - Installation
10) It is okay to bend the optic tube, but try to avoid a bend radius any tighter than the radius of a standard #2 pencil.
Even if a “kink” is formed in the outer tubing, the inner fibers are not easily damaged. The fibers are made of super
flexible plastic, not glass. The tube tends to hold its shape a bit.
NOTE: The large red transparent piece on the front of your flash is NOT the infrared sensor. In fact this area has
nothing to do with the wireless communication system - it is simply a focus assist light. The correct sensor is a shiny
dark black window on the outside of your slave flash unit.
11) Attach the nylon bead over the infrared sensor on your flash using firm mounting tape. We recommend a square
of gaffer’s tape, commonly available in formulas that won’t leave a residue on your flash unit. It is recommended to
completely cover the optic and sensor to allow freedom of working outdoors in direct sunlight as there’s no longer a
concern of the sun “blinding” the sensor. This also results in the most secure mounting of the optic.
As an alternative, you may tape the black optic tube to the flash below the IR sensor, while allowing the white bead
(as well as the sensor behind the bead) to remain uncovered. This will allow another photographer or assistant to also
trigger this slave flash using the normal “line of sight” system if they are close to the slave, while at the same time, you
may trigger this slave using the RadioPopper P1 system.
NOTE: It is okay if the slave flash “sees” the visible signal from the master flash on your camera and the signal from the
RadioPopper system at the same time.
12) When mounting the P1 Receiver in the future by pressing the Velcro pads together - a much greater bond may be
achieved between the Velcro hook and latch sides by pressing firmly, then applying a slight rotational force between
the Slave flash unit and the P1 Receiver. This tends to “set” the Velcro pads together.
13) Take another deep breath. We’re almost there. I know the excitement is killing you. We’ve all been there. Please
take a few minutes and read the rest of the manual no matter how eager you are to go play.
Transmitter Mounting on Other Hardware
For mounting the P1 Transmitter on other hardware such as the Canon ST-E2 and Nikon SU-800 IR Commanders,
the mounting is essentially the same. Mount the P1 Transmitter to the very top of the Master device, about
centered with the magnetic pickup sensor facing forward and the antenna pointed upward.
For additional images of product mounting, please see the Support section of our website.
Canon ST-E2: We suggest mounting Velcro to the front side of the battery cover.
Nikon SU-800: Mount directly on the top edge, which is a bit rounded but with proper placement and pressure
on the Velcro pads, a good anchor should be achievable.
Nikon “Pop-Up Flash”: Your P1 Transmitter was never intended to be used with a Nikon “pop-up” flash (used
as a master CLS commander on some camera bodies) but it does work. Though placement is somewhat ‘impro-
vised’, note that you should only mount your P1 transmitter behind the flash with the magenetic pickup sensor
nearest the back side of the flash. You should not mount it in front of the flash where the flash is firing directly
at the unit.
RadioPopper P1 Radio Wireless System
Page 12
SPEEDLITE
580EX
Transmitter Mounting on Master Flash
Top View (looking down from top)
Transmmitter should be just about centered on
top of the master flash. The pickup sensor should
point forward toward the end of the flash that
emitts light. The rear edge of the Transmitter should
just begin to cover the text printed on the top of
your flash.
Mount in a similar location for all models of Master
flash (Canon 550EX, 580EX, 580EX II, and Nikon
hardware SB-800 and the like).
Installation
Page 13
Fig 2-1
Master Flash Light Output