Telemetry Specs - (Developer Guidelines)

Specification for Spektrum X-Bus Telemetry Sensors
Page 8 Rev L
9 ELECTRONIC SPEED CONTROL
The AirWare-based transmitters include support for a generic Electronic Speed Control (ESC) device.
Spektrum does not sell a device which conforms to this telemetry standard, but is instead providing a
common interface which may be supported by ESC manufacturers.
The ESC configuration screen provides the same functions available to other devices, that is, whether
the status is actively monitored on the display. Alarms are available for the following conditions:
• Input Voltage too low
• Motor current too high
• FET temperature too high
The units and ranges for each of the fields in the telemetry message are found in the appendix in the
definition for the ESC structure. The transmitter does not provide any filtering of data for any ESC
fields.
10 FUEL FLOW METER
The AirWare-based transmitters may include support for a generic fuel flow and capacity metering
device. Spektrum does not sell a device which conforms to this telemetry standard, but is instead
providing a common interface which may be supported by third-party manufacturers.
The “Fuel” configuration screen provides the same functions available to other devices, that is, whether
the status is actively monitored on the display. Alarms may be available for some of the following
conditions:
• Tank 1 capacity consumed > user-defined value
• Tank 2 capacity consumed > user-defined value
• Fuel flow 1 too low
• Fuel flow 1 too high
• Fuel flow 2 too low
• Fuel flow 2 too high
• Temperature 1 too low
• Temperature 1 too high
• Temperature 2 too low
• Temperature 2 too high
The units and ranges for each of the fields in the telemetry message are found in the appendix in the
definition for the FUEL structure. The transmitter does not provide any filtering of data for any fields.
11 HIGH-CURRENT BATTERY CAPACITY
The AirWare-based transmitters include support for a generic battery current and capacity metering
device. Spektrum SPMA9605 provides this function, alarming and reporting only the first set of
message data (address 0x34) at this time. SPMA9604 provides similar capabilities for low-current
applications using address 0x18. PowerSafe receivers use both channels of reporting in the low-current