How can I get spare parts for my Altimaster?
There are three ways to get spare Altimaster parts, including Neptune battery covers, Galaxy mounting screws, and more: If you have a mechanical Altimaster (Altimaster II, Altimaster III, or Altimaster III Galaxy), yes, this is normal. Most altimeters do NOT directly measure altitude, they measure barometric pressure. As you go higher in altitude the air pressure drops, and the altimeter mechanism reacts to the change in pressure by rotating the pointer.The aircraft vertical position was determined using the navigational positioning equipment on the aircraft, which were radar altimeter and barometric altimeter. Radar altimeters are estimated to have an error of 2-5% of the altitude (Richard Hansen, PRJ, Inc.
What type of altitude input is required for TAWS?
Most TAWS installations require only uncorrected barometric pressure altitude information from an existing encoding altimeter. This altitude information is combined together with the altitude dervied from the connected GPS to provide accurate altitude information. This combination of pressure altitude and GPS altitude is called "Geometric Altitude" which is less susceptible to errors or malfunctions from normal altimeter systems.Most TAWS installations require only uncorrected barometric pressure altitude information from an existing encoding altimeter. This altitude information is combined together with the altitude dervied from the connected GPS to provide accurate altitude information. This combination of pressure altitude and GPS altitude is called "Geometric Altitude" which is less susceptible to errors or malfunctions from normal altimeter systems.
How much power do the TX-units use?
Depending on the mAh rating of the batteries you use, and the update frequency you select you will get different run times. As well, the radio can be put into 'serial sleep' mode which lowers its power consumption when not transmitting down to 5 ma. Setting the Radio to 'serial sleep' does help conserve battery power for applications where the update time is 10 seconds or more. The following examples assume and update frequency of 1 second.Quite simply, the primary reason you would want a barometric altimeter in a handheld GPS is for more accurate elevation readings. This is especially useful for bikers, hikers and atheletes in training. You can use the resulting data to track your progress and maintain an accurate record of your trips. A barometric altimeter can also help you accurately place your location on a topo map.
When starting FsXPand, I am unable to taxi away. What is happening?
There was a bug in version 4.3 causing the parking brakes to lock. If this behaviour is still present in version 5.1, please check if you have assigned brakes to a analog channel and wired it up reversely (a common error). You should be able to taxi when the brakes are fully down. Reverse the wiring in that case.
How much power do the TX-units use?
Depending on the mAh rating of the batteries you use, and the update frequency you select you will get different run times. As well, the radio can be put into 'serial sleep' mode which lowers its power consumption when not transmitting down to 5 ma. Setting the Radio to 'serial sleep' does help conserve battery power for applications where the update time is 10 seconds or more.
How is the altitude reported by the pressure sensor calculated?
The altitude calculated from the pressure sensor readings is based on the U.S. Standard Atmosphere (1976). A lookup table contained within the AFC-877's onboard firmware is used to find the calculated altitude based on the pressure value read. When the altimeter reports the peak barometric altitude, or when a low altitude event occurs, the altitude value used is based on this standard. The on the mAh rating of the batteries you use, and the update frequency you select you will get different run times.
There are three ways to get spare Altimaster parts, including Neptune battery covers, Galaxy mounting screws, and more: If you have a mechanical Altimaster (Altimaster II, Altimaster III, or Altimaster III Galaxy), yes, this is normal. Most altimeters do NOT directly measure altitude, they measure barometric pressure. As you go higher in altitude the air pressure drops, and the altimeter mechanism reacts to the change in pressure by rotating the pointer.The aircraft vertical position was determined using the navigational positioning equipment on the aircraft, which were radar altimeter and barometric altimeter. Radar altimeters are estimated to have an error of 2-5% of the altitude (Richard Hansen, PRJ, Inc.
What type of altitude input is required for TAWS?
Most TAWS installations require only uncorrected barometric pressure altitude information from an existing encoding altimeter. This altitude information is combined together with the altitude dervied from the connected GPS to provide accurate altitude information. This combination of pressure altitude and GPS altitude is called "Geometric Altitude" which is less susceptible to errors or malfunctions from normal altimeter systems.Most TAWS installations require only uncorrected barometric pressure altitude information from an existing encoding altimeter. This altitude information is combined together with the altitude dervied from the connected GPS to provide accurate altitude information. This combination of pressure altitude and GPS altitude is called "Geometric Altitude" which is less susceptible to errors or malfunctions from normal altimeter systems.
How much power do the TX-units use?
Depending on the mAh rating of the batteries you use, and the update frequency you select you will get different run times. As well, the radio can be put into 'serial sleep' mode which lowers its power consumption when not transmitting down to 5 ma. Setting the Radio to 'serial sleep' does help conserve battery power for applications where the update time is 10 seconds or more. The following examples assume and update frequency of 1 second.Quite simply, the primary reason you would want a barometric altimeter in a handheld GPS is for more accurate elevation readings. This is especially useful for bikers, hikers and atheletes in training. You can use the resulting data to track your progress and maintain an accurate record of your trips. A barometric altimeter can also help you accurately place your location on a topo map.
When starting FsXPand, I am unable to taxi away. What is happening?
There was a bug in version 4.3 causing the parking brakes to lock. If this behaviour is still present in version 5.1, please check if you have assigned brakes to a analog channel and wired it up reversely (a common error). You should be able to taxi when the brakes are fully down. Reverse the wiring in that case.
How much power do the TX-units use?
Depending on the mAh rating of the batteries you use, and the update frequency you select you will get different run times. As well, the radio can be put into 'serial sleep' mode which lowers its power consumption when not transmitting down to 5 ma. Setting the Radio to 'serial sleep' does help conserve battery power for applications where the update time is 10 seconds or more.
How is the altitude reported by the pressure sensor calculated?
The altitude calculated from the pressure sensor readings is based on the U.S. Standard Atmosphere (1976). A lookup table contained within the AFC-877's onboard firmware is used to find the calculated altitude based on the pressure value read. When the altimeter reports the peak barometric altitude, or when a low altitude event occurs, the altitude value used is based on this standard. The on the mAh rating of the batteries you use, and the update frequency you select you will get different run times.
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