User's Manual
Page 24
RadioPopper P1 Radio Wireless System
start to die. You will start seeing increased numbers of mis-res when either unit begins to run low. As the drain is
similar on both units, it’s a good idea to always replace batteries in all units at the same time. Also note the battery in
your Master Flash or IR Commander may be getting low.
8. Mis-res will increase with greater range. In normal shooting situations, activation and operation should be pretty
reliable. As you begin to put objects, walls, buildings, and city streets between P1 units, you will at some point notice an
increase in the number of mis-res.
9. Some mis-res are unavoidable. Due to the extreme speed at which the P1 system must operate, there is no error
checking or repeating of the radio signal as with other radio based ash triggering products. Unfortunately, the ash
manufacturers chose to time the visual pulses of light impossibly close together. The P1 system reads these pulses of
light and does it’s best to relay them. The message is sent, and generally it’s received and operates the slave ash cor-
rectly. See the Release Notes for a more detailed discussion.
The source of most mis-res attributable to the P1 System is background radio interference. We have built a nearly
perfectly tuned radio system into the RadioPopper P1 and it uses a frequency not shared by many other devices (it’s
nowhere near the frequency used by wireless phones for example). However, other electronic devices present in most
environments emit a certain amount of unintentional radio waves. This background radiation will foul a certain number
of shots, but the actual number should be fairly minimal and overall, you should nd performance quite reliable.
No Flash at All
The second mis-re event you may observe is the Slave ash not emitting any light at all. This is likely caused by
incorrect conguration of the ash system itself (aside from the RadioPopper P1 system) or a problem with system
installation.
1. Uncover the infrared sensor on your Slave ash (if you’ve used an adhesive cover or tape to attach the P1 Receiver
optic over the sensor). Power o the P1 Transmitter and Receiver and attempt to re the Slave ash at short range using
the normal line of sight system. It must operate correctly using the line of sight system at short range before it will
operate using the P1 System as the P1 is simply repeating the visible signal.
See the owner’s manual that came with your ash and camera body to insure you’ve congured your existing hardware
correctly. You may want to double check the Master and Slave units are set to the same ETTL channels, that the ash on
the hot-shoe is set to “Master” and the remote ash is set to “Slave” and so on.
Once your ashes are operating correctly using the line of sight system, power up your P1 Transmitter and P1 Receivers
and continue....
2. When the radio is activated on the P1 Transmitter (see Operating Instructions earlier in this manual), observe the Link
LED (orange) is lit on the P1 Transmitter. This should also cause the Link LED to light on the P1 Receiver indicating there
is a good radio link established between the two units.
If the Link LED is lit on your P1 Transmitter, but the Link LED does not light on your P1 Receiver(s), the receiver(s) may be