the GPS is acquired). If F2 is pressed when there is no GPS reception A1 will be set to a value that corresponds to
the default QNH pressure of 29.92 inHg (1013hPa). If other screens or functions have been accessed prior to setting
the altitude the “Mod Alt1 ↑↓” may not be present in the Information Display. To bring it up repeatedly press the F1
(Next Func.) key. Note: Once the flight has begun A1 can no longer be adjusted and the “Mod Alt1 ↑↓” cannot be
brought up with the Next Func, key.
When you adjust A1, the sea level air pressure display also changes and will be visible if the QNH is set as one of the
User Fields. The air pressure display (QNH) always refers to sea level. The user can determine the altitude of his/her
current location by setting the current sea level air pressure (QNH) obtained from a weather radio or flight service in
the Basic Settings in Menu>Basic Setting>QNH.
If A1 is set to zero for any planned landing area, then the height above this location will always be indicated after
starting. The associated air pressure (QFE) is the actual air pressure in hPa at this altitude, which deviates from
QNH, the pressure at sea level.
A3 Digital Vario and Netto Vario
The digital vario has a resolution of 10 fpm (0.1 m/s) and a very wide measuring range of +/-14,000 fpm (+/- 70 m/s),
ideal for displaying extreme vertical speeds, such as those found in skydiving and base-jumping. If desired the digital
vario display can function as an averaged vario (also called an integrated vario). If the dial display has been selected
the digital vario display is in the center of the dial. The period over which the instantaneous values are averaged can
be between 1 and 30 seconds. This is very useful for determining the actual strength of a rough thermal. The digital
vario can also serve as a netto (air-mass) vario, which shows the vertical motion of the surrounding air. It is possible
to set the digital vario to serve as an averaged vario while climbing and as a Netto vario (air mass vario) while
gliding in Menu>Basic Settings>Digital Variomode. To find out more read section E2 Netto Vario.
A4 Speed
After vertical speed and altitude, airspeed is next most significant piece of flight information. Airspeed information
increases safety can be used to increase performance during racing and distance flights. The best glide speed, the
McCready speed to fly, as well as the netto vario can only function when the airspeed is known. The 5030 displays
both digital and analog air speed and the user can choose to view airspeed as a True or Indicated in Menu>Basic
Settings>Speed mode. There are two possible speed ranges for the analog speed display ranges 12-62mph or 19-
68 mph and can be set in Menu>Basic Settings>Speed mode
The 5030 has two independent speed sensor options:
•Built-in pitot pressure sensor (5030HG), which measures the indicated airspeed (IAS) and is capable of showing
speeds of up to 94 mph (150 km/h) on the digital display and 19-68 mph on the analog speed scale. However,
this sensor only begins to work at 19 mph (30 km/h). If necessary, the pitot tube can be extended with a flexible
hose to a turbulence-free spot on the glider.
•Optional vane wheel sensor (can be used with Hg and PG versions of 5030), which measures true airspeed
(TAS) and is capable of showing speeds 1 - 94 mph (150 km/h) on the digital display and 19-68 mph on the
analog speed scale. It is also well suited in determining the wind speed at take-off.
It does not matter which sensor is used since both speeds (TAS and IAS) are always internally calculated. Should
you be unfamiliar with the difference in these concepts, please refer to section E3 -True or Indicated Airspeed in the
appendix. Both speed sensors can be adjusted with a correction factor in Menu>Basics Settings>Airspeed correct.
vane or Airspeed correct. pressure. The factory setting is 100% for both sensor options.
When flying without an airspeed sensor (5030HG with the pitot sensor turned off or the 5030PG without a vane wheel
sensor) the 5030 can display the calculated airspeed in the user field Calcairspd. This airspeed is generated
mathematically from the difference between the wind component and groundspeed. Therefore, it is necessary to fly a
few smooth circles so that the 5030 can accurately calculate the wind velocity before it can calculate the airspeed.
The calculated airspeed is always shown as true airspeed.
A5 Stall Alarm
The stall alarm threshold, the air speed below which the stall alarm will sound, can be adjusted in Menu>Basic
Settings>Stallspeed. An altitude threshold, the altitude below which the stall alarm feature will be active, can also be
set in this menu. To disable the stall alarm set the air speed value to 0 mph (km/h). The trigger point for the stall
alarm is always linked to the indicated airspeed. At greater altitudes, i.e. in thinner air, the alarm will sound earlier
(i.e. at a higher flying speed) than at sea level. For information please refer to section E1-Stall Alarm in the
