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often undesirable in scale models, and for such applications we offer an alternative
switch in the shape of the MagSensor. However, please note that the SensorSwitch
is required for the programming procedure - unless you are using a PowerBox or
Jeti RC radio system - and for this reason it should always be available for use. The
SensorSwitch is plugged into the socket marked Switch on the side of the Power-
Box.
b) Receivers
Once you have installed the PowerBox Mercury SR2, the screen and the switch, it is
time to connect the receivers. In principle all SRS PowerBox systems are totally reli-
able when used with a single receiver. However, in view of the low cost of a second
receiver compared with the value of the model, we always recommend installing a
second receiver.
Ideally the receivers should be spaced well apart inside the model, as this increa-
ses the likelihood that at least one receiver will have good reception at all times
- even under difcult reception conditions. It is permissible to extend the serial bus
connection between receiver and backer to any length, as the signal is digital, and
therefore extremely resistant to external inuences.
The PowerBox Mercury SR2 can be used with a wide range of radio control sys-
tems: PowerBox CORE P²BUS, Futaba S.BUS2, Jeti EX-BUS, Spektrum SRXL2,
Multiplex M-Link, JR DMSS and Graupner Hott. The rst four systems share one
common feature: servo signals and telemetry data are carried on a bus system, and
this allows the receivers to be connected to the Mercury SR2 using a single patch
lead each. Multiplex and Hott systems require an additional connection between
the TELE- output of the PowerBox and the receiver’s telemetry input.
The PowerBox Mercury SR2 automatically detects the system to which it is
connected. However, when the radio is rst switched on it may take a few seconds
before the system is unambiguously recognised. Once detected, the unit stores the
system type, and it will start immediately next time it is switched on.
• PowerBox ATOM/CORE
Connect one or two receivers to RX1 and RX2 at the P²BUS output. If only one
receiver is to be used, it must be connected to RX1 to provide telemetry transmis-
sion. If a GPS III or a PBS-TAV is connected to the FastTrack input, the Mercury
also delivers this ight data to the transmitter.
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