The AR9100 Failsafe features
In addition to Spektrum's exclusive SmartSafe™ technology, the AR9100 provides the option of using standard user preset failsafe settings.
SmartSafe Failsafe
The AR9100 PowerSafe features a SmartSafe failsafe option. SmartSafe is ideal for most types of electric aircraft and is also recommended for most types of gas and glow powered models. With SmartSafe, when signal is lost only the throttle channel is driven to its preset failsafe position (normally low throttle) while all other channels hold last command. Here’s how SmartSafe works:
Receiver power only
When the receiver only is turned on (no transmitter is present), no pulses are output to the servos so the servos are not powered and thus remain in their “at rest” position. The receiver will remain in standby mode with the blue battery LED(s) on definitely until it detects a transmitter signal. When the transmitter is turned on, the receiver locates the signal (GUID), connects, and normal control resumes. Once connected, the amber LEDs on the attached remote receivers will be on.
After connection
After the receiver connects to the transmitter once it is turned on, normal control of all channels occurs. After the system makes a connection, if loss of signal occurs SmartSafe drives the throttle servo only to its preset failsafe position (low throttle) that was set during binding. All other channels hold their last commanded position. When the signal is regained, the system immediately (less than 4ms) regains control.
• Prevents unintentional electric motor response on start-up.
• Eliminates the possibility of over-driving servos on start-up by storing preset failsafe positions.
• Establishes low-throttle failsafe and maintains last-commanded control surface position if the RF signal is lost.
Note: Failsafe positions are stored via the stick and switch positions on the transmitter during binding.
Detailed instructions of programming either types of failsafe are in the AR9100 manual. |
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Preset Failsafe
Preset Failsafe is ideal for sailplanes and is preferred by some modelers for their glow and gas powered aircraft. With Preset Failsafe, if the signal is lost all channels are driven to their preset failsafe positions. Here’s how Preset Failsafe works:
Receiver power only
When the receiver only is turned on (no transmitter is present), no pulses are output to the servos so the servos are not driven and remain in their “at rest” position. The receiver remains in standby mode with the blue battery LED(s) on definitely until the transmitter signal is present. When the transmitter is turned on, the receiver locates the signal (GUID), connects, and normal control resumes. When connected, the amber LEDs on the attached remote receivers will be on.
After connection
When the transmitter is turned on and after the receiver connects to the transmitter,normal control of all channels occurs. After the system makes a connection, if loss of signal occurs Preset Failsafe drives all servos to their preset failsafe positions that were set during binding. When the signal is regained, the system immediately (less than 4ms) regains control.
Advantages of Preset Failsafe:
• Prevents unintentional electric motor response on start-up.
• Eliminates the possibility of over-driving servos on start-up by storing preset
failsafe positions.
• Establishes preset failsafe servo positions for all channels if the signal is lost.
Note: Failsafe positions are stored via the stick and switch positions.
Flight Log
The AR9100 is also compatible with Spektrum's optional Flight Log (SPM9540) that reviews data about the overall RF link performance for post-flight review, the receiver installation as well as provide clues to the level of 2.4GHz "noise" in the flying environment. It also displays receiver voltage so starting each flight can be decided on more safely.
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