Spektrum SPMAR9100 - Manual (Page 6)

2. Mount the switch on the side of your aircraft and insert the switch plug in the
port in the main unit marked SWITCH.
Note: The PowerSafe uses a specifically designed switch. Conventionally wired
switches are not compatible with the SmartSafe.
Spektrum AR9100 9 Spektrum AR9100 10
1. Using foam or thick double-sided foam tape and tie wraps, secure the main
PowerSafe unit in the position that you would normally mount the receiver.
Installing the PowerSafe Main Unit Installing the Batteries
Using the above guidelines select the battery system that best fits your
application and install the battery(s)/regulator(s) in your aircraft. Connect
the battery to the PowerSafe. Spektrum batteries are pre-wired with an EC3
connector and plug directly in. If using another brand of battery it will be
necessary to solder EC3 connectors (2 are included with the AR9100) to
the battery leads. If using a regulator, install it per the guidelines included
with the regulator.
Mounting the Remote Receivers
A ntenna Polarization
For optimum RF link performance it’s important that the remote antennas
be mounted in an orientation that allows for the best possible signal
reception when the aircraft is at all possible attitudes and positions. This
is known as antenna polarization. If two receivers are used, the antennas
should be oriented perpendicular to each other, typically one vertical and
one horizontal (see illustrations on pages 11–12). This allows the greatest
exposed visual cross section of the antennas from all aircraft orientations.
If three antennas are used it is recommended that one antenna be mounted
vertically, one horizontally in-line with the fuselage and one horizontally
perpendicular to the fuselage (see illustration). This covers the X,Y and Z
axis offering superb cross section visibility in all aircraft orientations. An
optional fourth antenna can be added at an intermediate angle offering even
greater RF link security and system redundancy.
Locating the Remote Receivers
While Spektrum 2.4GHz systems are far more resistant to interference
caused from internal RF generating sources, the remote receivers should
be mounted as far away as practical (typically 4” or greater if possible)
from the following:
• Ignition systems
• Ignition batteries
• Ignition switches