SonoAlti 4V
Frequently Asked Questions
Q: How does SonoAlti 4V compare to other audible altimeters that beep?
A: SonoAlti 4V is a speaking audible, so it provides more constant altitude awareness than other types of audibles. In freefall, SonoAlti 4V does actually also has the ability to beep or produce sirens if one requires a more dramatic altitude indicator at a specific altitude. Specifically, see "Alarm 1," "Alarm 2," and "Alarm 3" in the List of Spoken Notifications and Sounds in the freefall settings or "Alarm 4" through "Alarm 8" under canopy settings.
A: SonoAlti 4V is a speaking audible, so it provides more constant altitude awareness than other types of audibles. In freefall, SonoAlti 4V does actually also has the ability to beep or produce sirens if one requires a more dramatic altitude indicator at a specific altitude. Specifically, see "Alarm 1," "Alarm 2," and "Alarm 3" in the List of Spoken Notifications and Sounds in the freefall settings or "Alarm 4" through "Alarm 8" under canopy settings.
Q: How do SonoAlti 3V and SonoAlti 4V differ?
A: SonoAlti 4V has USB C, unlike the SonoAlti 3V, which has USB Micro B. However, the 4V does not have an external audio port like the 2.5 mm port on the 3V. The 4V is also smaller in every dimension than its predecessor and gets slightly longer battery life. Other than this, the altimeters function very similarly.
A: SonoAlti 4V has USB C, unlike the SonoAlti 3V, which has USB Micro B. However, the 4V does not have an external audio port like the 2.5 mm port on the 3V. The 4V is also smaller in every dimension than its predecessor and gets slightly longer battery life. Other than this, the altimeters function very similarly.
Q: Can I create my own sounds for SonoAlti 4V?
A: Yes, refer to the manual for detailed instructions.
A: Yes, refer to the manual for detailed instructions.
Q: Does SonoAlti 4V have a piezo loudspeaker like other audibles?
A: No, the speaker is electromagnetic, but it has the capability of beeping and produce sirens very similar to those of a piezo speaker when in freefall or under canopy. See, for example, "Alarm 1," "Alarm 2," and "Alarm 3" in the List of Spoken Notifications and Sounds under freefall settings or "Alarm 4" through "Alarm 8" under canopy settings.
A: No, the speaker is electromagnetic, but it has the capability of beeping and produce sirens very similar to those of a piezo speaker when in freefall or under canopy. See, for example, "Alarm 1," "Alarm 2," and "Alarm 3" in the List of Spoken Notifications and Sounds under freefall settings or "Alarm 4" through "Alarm 8" under canopy settings.
Q: I hear my audible going off and reading information on the ground. Why is this?
A: SonoAlti 4V is a sensitive barometric pressure device. Driving in a car can be similar to the takeoff in an aircraft. If you do not want to hear the altimeter on the ground at all, it is recommended to turn off the pre-jump briefs by creating user presets using the SonoAlti 4V WebUSB App. You an also change the Ascent settings: Do you have it from 0 to 30,000 ft? That is why it is reading at 0 feet; change the 0 to 100 feet or higher.
A: SonoAlti 4V is a sensitive barometric pressure device. Driving in a car can be similar to the takeoff in an aircraft. If you do not want to hear the altimeter on the ground at all, it is recommended to turn off the pre-jump briefs by creating user presets using the SonoAlti 4V WebUSB App. You an also change the Ascent settings: Do you have it from 0 to 30,000 ft? That is why it is reading at 0 feet; change the 0 to 100 feet or higher.
Q: Does SonoAlti 4V come with any external speakers or earphones?
A: No, the built-in speaker provides voice notifications, but if one wants to use external speakers and the 2.5 mm audio jack (which overrides the built-in speaker) they must be purchased separately. For the vast majority of applications, external speakers should not be necessary, as the altimeter is sufficiently loud for most helmets and skydiving applications. UClear Digital Pulse speakers are recommended as external speakers as they are slightly louder than the built-in speaker; note, however, that these speakers would require a 2.5 mm to 3.5 mm adapter to be used.
A: No, the built-in speaker provides voice notifications, but if one wants to use external speakers and the 2.5 mm audio jack (which overrides the built-in speaker) they must be purchased separately. For the vast majority of applications, external speakers should not be necessary, as the altimeter is sufficiently loud for most helmets and skydiving applications. UClear Digital Pulse speakers are recommended as external speakers as they are slightly louder than the built-in speaker; note, however, that these speakers would require a 2.5 mm to 3.5 mm adapter to be used.
Q: How exactly does the audio work on SonoAlti 4V?
A: The best way to understand how SonoAlti 4V works is to watch the demonstration video XXX.
A: The best way to understand how SonoAlti 4V works is to watch the demonstration video XXX.
Q: What is the advantage of this type of altimeter?
A: These devices are excellent for building general altitude awareness skills. Hearing a spoken altitude while simultaneously associating it with an altitude picture trains your eyes as well as your timing. Sometimes we are very unaware of how fast we are actually lose altitude on a skydive.
A: These devices are excellent for building general altitude awareness skills. Hearing a spoken altitude while simultaneously associating it with an altitude picture trains your eyes as well as your timing. Sometimes we are very unaware of how fast we are actually lose altitude on a skydive.
Q: Can I set the altimeter on the way to altitude?
A: Yes, one can select presets by holding the top or bottom button in the aircraft. However, Freefall Data Systems always recommends doing any setting of altimeters on the ground before a skydive as to minimize distractions. Jumpers should be focused on safety and their jump in the aircraft.
A: Yes, one can select presets by holding the top or bottom button in the aircraft. However, Freefall Data Systems always recommends doing any setting of altimeters on the ground before a skydive as to minimize distractions. Jumpers should be focused on safety and their jump in the aircraft.
Q: Is SonoAlti 4V a logging device?
A: SonoAlti 4V was not conceived to interface with our online logging system FDS Logbook. For this purpose we recommend another type of altimeter such as our wrist-mounted DigiAlti.
A: SonoAlti 4V was not conceived to interface with our online logging system FDS Logbook. For this purpose we recommend another type of altimeter such as our wrist-mounted DigiAlti.
Q: Does SonoAlti 4V have GPS?
A: SonoAlti 4V does not have GPS as that would reduce the battery life greatly and compromise dependability. Altitude measurements are based on barometric pressure changes.
A: SonoAlti 4V does not have GPS as that would reduce the battery life greatly and compromise dependability. Altitude measurements are based on barometric pressure changes.
Q: What helmets does it fit?
A: SonoAlti 4V fits and can be heard well in most skydiving helmets that have an audible port or pocket. Kiss helmets are not particularly good for audible altimeters because the audible mounts on the sides of the helmet often do not line up well with the jumper's ears. Check to see if your ear lines up well with your audible ports on your helmet. SonoAlti 4V is loud, but speaking audibles are by their nature not as loud as traditional audibles when the wind noise is extreme such as in freefall.
A: SonoAlti 4V fits and can be heard well in most skydiving helmets that have an audible port or pocket. Kiss helmets are not particularly good for audible altimeters because the audible mounts on the sides of the helmet often do not line up well with the jumper's ears. Check to see if your ear lines up well with your audible ports on your helmet. SonoAlti 4V is loud, but speaking audibles are by their nature not as loud as traditional audibles when the wind noise is extreme such as in freefall.
Q: Is SonoAlti 4V suitable for student use?
A: SonoAlti 4V can be very useful in enhancing a student's altitude awareness and provide cues, but should only be used with the permission and under the supervision of a current instructor officially rated by a national parachuting organization such as the United States Parachute Association.
A: SonoAlti 4V can be very useful in enhancing a student's altitude awareness and provide cues, but should only be used with the permission and under the supervision of a current instructor officially rated by a national parachuting organization such as the United States Parachute Association.
Q: Is SonoAlti 4V waterproof?
A: SonoAlti 4V is only lightly water resistant. It is not recommended for water landings nor does the warranty cover water damage.
A: SonoAlti 4V is only lightly water resistant. It is not recommended for water landings nor does the warranty cover water damage.
Q: Is there a differentiation between ascent, canopy and freefall alarms?
A: Yes. SonoAlti 4V differentiates between the three types of announcements and notifications: ascent, freefall, and canopy.
A: Yes. SonoAlti 4V differentiates between the three types of announcements and notifications: ascent, freefall, and canopy.
Q: I notice some deviation between my wrist-mounted altimeter and my SonoAlti 4V. Is this normal? Which is correct?
A: Yes. Because barometric altimeters are subject to wakes and burbles, their placement can affect their readings. Which is closer in accuracy will depend on the type of jump you are doing and how you have the altimeters mounted. In most cases, the deviation is not larger than a couple hundred feet at the very most. If the deviation is more, see whether the altimeters are at least synchronized during ascent in the plane and go from there. If they are synchronized in the plane or under canopy but not in freefall, then the placement of the altimeters is certainly affecting their synchronization in freefall. Altimeters placed in a wake will read higher than those in clean air. So if you are, for example, sit-flying or doing a tandem, it isn't an unlikely possibility that your altimeter is being subjected to a significant burble.
A: Yes. Because barometric altimeters are subject to wakes and burbles, their placement can affect their readings. Which is closer in accuracy will depend on the type of jump you are doing and how you have the altimeters mounted. In most cases, the deviation is not larger than a couple hundred feet at the very most. If the deviation is more, see whether the altimeters are at least synchronized during ascent in the plane and go from there. If they are synchronized in the plane or under canopy but not in freefall, then the placement of the altimeters is certainly affecting their synchronization in freefall. Altimeters placed in a wake will read higher than those in clean air. So if you are, for example, sit-flying or doing a tandem, it isn't an unlikely possibility that your altimeter is being subjected to a significant burble.
Q: What happens if the altimeter is reading an altitude or something else and I pass through the next announcement it should read?
A: The previous reading will be cut off, with altitude always being the first thing read if it is selected to be read.
A: The previous reading will be cut off, with altitude always being the first thing read if it is selected to be read.