Genesys IDU-450 8.0H, Pilot'S Manual, Page: 192 / 396

Section 5 Menu Functions and Procedures
5-32 IDU-450 EFIS Software Version 8.0H (Rotorcraft) Rev A Apr 2019
With VOR symbology enabled, the OBS function also permits the pilot to
select either
FMS, VLOC1 , or VLOC2 as the HSI source. The HSI source
selects the navigation source used to generate HSI guidance symbology.
The OBS function also permits the pilot to select between manual and
automatic RNP settings.
Upon selecting RNP.. (R2) , RNP AUTO/RNP MAN (R4) toggles between
automatic and manual RNP settings. Manual RNP is selectable between
0.10NM and 15NM as follows:
1) 0.01NM increments between RNP 0.10 and RNP 0.3
2) 0.1NM increments between RNP 0.3 and RNP 2
3) 1NM increments between RNP 2 and RNP 15
5.10.1. Omnibearing Selector (OBS) Menu (Step-By-Step)
1) Before pressing OBS (L4) to make
any OBS changes, view the
current setting to see if
FMS is
selected.
2) Press OBS (L4) and make HSI
source selection or change to
OBS MANUAL (R4). (There must
be an active waypoint selected to
use manual OBS.)
3) When the OBS is set to FMS,
VLOC1, or VLOC2, scroll

to
select new OBS course.
4) Press RNP (R2) .
5) Press RNP MANUAL (R4) .