Installation
and Configuration
Version 1.41, June 2017
Page 46 of 69
If the unit is to be configured for pneumatic TE compensation using a TE tube, then the
connections are:
TE/P
static
= TE tube
P
static
= Static
P
total
= Pitot or Total pressure
If the P
total
and Static are connected the wrong way around there will be no vario
integrator reading (average climb) during the flight.
The main display unit is connected to 12 Volt power via the 15-pin SUB-D connector. The
main display unit, vario unit and other vario indicators are connected via the RS485 bus and
the connectors are labelled with “
RS485
” at each end.
Please ensure that both units are connected correctly before the first power on. The power
wires (red and blue) should be connected to the main display unit.
It is VERY IMPORTANT to use an external fuse (max. 3A). Power supply cables
should use a minimum of 0.5 mm² wires.
5.2.1.4
Audio
The Audio speaker is plugged into the vario unit’s Audio port. The Audio port has a
standard 3.5mm phono-jack (mono).
If an old vario is being upgraded, the user must exchange the main vario cable
otherwise the audio will not work. You ALSO must connect the vario’s Audio port
directly to a speaker...
5.2.1.5
Inputs
V9, V8, V80 and V5 variometers have 6 programmable digital inputs. They are labelled with
SC, VP, IN1, IN2, IN3 and IN4 on V5/V9 cable-set. Currently digital input can represent the
state of the following actions:
SC
Vario priority
Gear down and lock
Airbrakes open
Water ballast open
Mute vario sound
