ALTER
User manual
How to switch on
Press and hold the button. While holding the
button you will observe all the display indicators
lighting up for you to have visual control of their
operation. Also this process includes device
self-test and setting of reference pressure.
After that the display shows ‘0’ (or your pre-set
elevation). Here release the button – the
altimeter is ready for a jump.
How to switch off
An altimeter may be switched off only in ‘on
ground’ mode. After the device is switched it
turns off automatically after 14 hours (if it is in
‘on ground’ mode).
In order to switch the device off manually press
and hold the button to browse through the
menu. When the “OFF” option appears, release
the button. Here the accidental shutdown
sequence begins: like in an AAD you will see
digits ‘3333’, ‘2222’, ‘1111’ – shortly press the
button each time you see the digits.
Parachuting is a hazardous activity that can result in injury or death. An altimeter is a mechanical device and may
malfunction, even when properly designed, built, assembled, maintained and used. Do not rely upon an altimeter for your
safety. Your altimeter must only be considered as an aid when checking your altitude. The needle can stick during both
ascent and descent – a visual cross reference with the ground should be used in combination with the altimeter.
If you have ANY problems or question, please call or e-mail us.
We will do our best to help you get the most out of your Alter.
How to check battery
charge
How to switch on/off
backlight
Logbook
In order to check battery charge press the
button the hold until you see the bars
representing the charge. If you continue holding
the button, other options of menu will follow.
In order to switch the backlight on press the
button and hold. When ‘led’ option appears
release the button. The same procedure for
switching off.
In order to look through the logbook press the
button and hold. When ‘log’ option appears
release the button (this option is available only
in ‘on ground’ mode). You jumping statistics
follows:
JMPS – total number of jumps
SPD – maximum speed during previous jump
FFT – Freefall time
Alt – Deploy altitude
After that the device switches to ‘on ground’
altitude display.
Parachuting is a hazardous activity that can result in injury or death. An altimeter is a mechanical device and may
malfunction, even when properly designed, built, assembled, maintained and used. Do not rely upon an altimeter for your
safety. Your altimeter must only be considered as an aid when checking your altitude. The needle can stick during both
ascent and descent – a visual cross reference with the ground should be used in combination with the altimeter.
If you have ANY problems or question, please call or e-mail us.
We will do our best to help you get the most out of your Alter.
Jump counter editing
In order to look through the logbook press the
button and hold. When ‘log’ option appears
release the button (this option is available only
in ‘on ground’ mode).
Then when you see «JMPS» again press and
hold the button.
If you want to increase the number of jumps release the button when «Add» option appears.
Current number of jumps on the display starts
to blink. Pressing / holding the button, set the
required number of jumps. After setting the
desired value do not touch the button, the
counter will stop flashing and the altimeter will
enter "on the ground" mode
If you want to decrease the number of jumps release the button when «Sub» option appears.
Current number of jumps on the display starts
to blink. Pressing / holding the button, set the
required number of jumps. After setting the
desired value do not touch the button, the
counter will stop flashing and the altimeter will
enter "on the ground" mode
Parachuting is a hazardous activity that can result in injury or death. An altimeter is a mechanical device and may
malfunction, even when properly designed, built, assembled, maintained and used. Do not rely upon an altimeter for your
safety. Your altimeter must only be considered as an aid when checking your altitude. The needle can stick during both
ascent and descent – a visual cross reference with the ground should be used in combination with the altimeter.
If you have ANY problems or question, please call or e-mail us.
We will do our best to help you get the most out of your Alter.
Elevation offset
Elevation may be set within -300m to 300m
range. In order to set elevation press the button
and hold until ‘SET0’ appears, then release.
Zero (or current elevation of grounding area) on
the display starts to blink.
To increase the elevation by 5m shortly press
the button. Upon long hold of button the value
of elevation starts to change fast.
When the value reaches 300m one more button
press changes the value to -300m and all the
following presses allow you to set necessary
negative elevation.
After the value reaches needed level release the
button and wait until the light stops blinking.
The altimeter goes to ‘on ground’ mode and the
display will show current elevation of grounding
area.
Parachuting is a hazardous activity that can result in injury or death. An altimeter is a mechanical device and may
malfunction, even when properly designed, built, assembled, maintained and used. Do not rely upon an altimeter for your
safety. Your altimeter must only be considered as an aid when checking your altitude. The needle can stick during both
ascent and descent – a visual cross reference with the ground should be used in combination with the altimeter.
If you have ANY problems or question, please call or e-mail us.
We will do our best to help you get the most out of your Alter.
Indicator of low battery
charge
When the battery charge reaches 40% the
display shows ‘LB’ indicator (Low Battery). If
possible, recharge the device in order the
battery lasts longer. Before plugging the
charger switch the altimeter on.
Firmware update
For firmware update switch on your altimeter and connect it to a
computer via USB.
Then press and hold the button until the indicator of battery charge goes
off. Release the button. Your computer will show a USB flash named
ALTER_FLASH.
Windows
Delete old firmware firmware.bin, then copy new firmware file instead of
it.
Mac
Download and run mac_updater from the website.
Or
Open Finder.
Open catalog /Applications/Utilities and launch Terminal
Write following commands:
«rm /Volumes/ALTER_FLASH/firmware.bin»
«cd ~/Downloads»
«cp alter_firmware_2_6.bin /Volumes/ALTER_FLASH»
After the process of copying is over, disconnect the altimeter from a
computer and press the button to complete update. After that the
altimeter goes off and is ready for use.
Parachuting is a hazardous activity that can result in injury or death. An altimeter is a mechanical device and may
malfunction, even when properly designed, built, assembled, maintained and used. Do not rely upon an altimeter for your
safety. Your altimeter must only be considered as an aid when checking your altitude. The needle can stick during both
ascent and descent – a visual cross reference with the ground should be used in combination with the altimeter.
If you have ANY problems or question, please call or e-mail us.
We will do our best to help you get the most out of your Alter.
Work modes of altimeter
«On ground»
In the ‘on ground’ stand-by mode the altimeter displays ‘0’ (or current
elevation of grounding area) and automatically calibrates for zero
pressure waiting for take-off. After 5 minutes in this mode the display
switches off for energy economy (at take-off it turns on automatically).
Take-off is registered when average speed of climb in 8 seconds exceeds
2m/sec. At this the altimeter takes for zero the value of pressure which
was recorded 30 seconds before – when the device was certainly on
ground.
«Climb»
In climb mode the altitude is updated by 5m. Menu does not offer ‘log’,
‘OFF’ and ‘SET0’ options anymore, the device can be switched off only in
‘on ground’ mode. The altimeter goes to ‘on ground’ mode upon following
conditions:
- Altitude is less than 200m
- Average speed of descent 0 m/sec during a minute.
During long flight at the same altitude over 200m the device does not
reset to zero.
«Freefall »
During free fall altitude is updated by 50m for easy altitude read. In this
mode the button is not active and produces no effect.
«Parachuting»
After the canopy is deployed the altitude is updated by 5m. In this mode
the button is not active and produces no effect.
Parachuting is a hazardous activity that can result in injury or death. An altimeter is a mechanical device and may
malfunction, even when properly designed, built, assembled, maintained and used. Do not rely upon an altimeter for your
safety. Your altimeter must only be considered as an aid when checking your altitude. The needle can stick during both
ascent and descent – a visual cross reference with the ground should be used in combination with the altimeter.
If you have ANY problems or question, please call or e-mail us.
We will do our best to help you get the most out of your Alter.