LXI LX7007 - Manual (Page 59)

LX 7007 pro IGC V1.0 Apr.2005
Page 59
4 Installation
The LX 7007 PRO IGC main unit (LX 7000 DU) needs one standard 80mm cut-out. The Vario sensor unit (LX 7007
AU) and any additional vario indicators need a standard 57mm cut-out each.
Three pressure connectors are fitted to the back of the LX 7007 AU. A label shows their functions.
• Ptot = Pitot or Total pressure
• TE = TE probe
• Pst = Static
If the unit is to be configured for electronic TE compensation, then the connections are as follows:
• TE/Pst Static
• Pst Static
• Ptot Pitot or Total pressure
If the unit is to be configured for pneumatic TE compensation using a TE tube, then the connections are:
• TE/Pst TE tube
• Pst Static
• Ptot Pitot or Total pressure
Note!
If the Ptot and Static are connected the wrong way around, there will be no integrator reading (average climb) during the
flight. The LX 7007 DU is connected to 12 volt power via the 15 SUB D connector. Both units are connected via the
485 bus and the connectors are marked like 1-1. It is not possible to connect the DU and AU incorrectly as some pins
are removed and some sockets blanked off.
Note!
There is no fuse in the instrument so it is VERY IMPORTANT to use an external fuse (max. 3A). Power supply
cables should use a minimum of 0.5mm² wires (20 awg).
To prevent damages on LX 7000 80mm unit after a short on 485 bus, a fuse of blade type (the same fuses are used in
modern cars and therefore available on petrol stations) is built on the rear side of the unit. After a short happened 57 mm
unit will not work any more, but the reason is not the defect of 57mm unit, but the bowled fuse. Use 3 A fast acting
blade type fuse (violet).
instrument panel
selector axis
press-in cover
special type screw
rotary knob
LX5000 LX7007