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Page 5-8 500 SERIES INSTALLATION MANUAL
Rev G P/N 190-00181-02
5.2.8 MAIN CDI/OBS CONFIG Page
Select the MAIN CDI/OBS CONFIG Page (see Figure 5-
9). This page allows you to verify the MAIN CDI outputs,
both lateral (LAT) and vertical (VERT), and verify and
calibrate the MAIN OBS input. Using the controls on the
500 Series unit front panel, make the selections below and
verify the interfaces as appropriate:
CDI (LAT/VERT)
Selection Verify That:
Max left/up
The CDI is “pegged” to the left/up.
Full left/up
The CDI is deflected full scale to the left/up.
Center
The CDI is centered.
Full right/down
The CDI is deflected full scale to the right/down.
Max right/down
The CDI is “pegged” to the right/down.
NAV FLAG (LAT/VERT)
Selection Verify That:
Hidden
The LAT/VERT flag is hidden.
In view
The LAT/VERT flag is in view.
TO-FROM
Selection Verify That:
FROM
The FROM flag is in view.
Hidden
The TO/FROM flag is hidden.
TO
The TO flag is in view.
SELECTED COURSE
Select 150° on the CDI/HSI that is connected to the 500 Series unit’s MAIN OBS inputs. The
SELECTED COURSE field should indicate near to 150° and a Calibrate to 150°? field appears.
Selecting this field calibrates the 500 Series unit to match the input source. Verify OBS operation by
checking that the course displayed on the 500 Series unit is within 2° of the selected course. Do this at 30°
intervals around the OBS card.
NOTE
If it is desired to ignore a selected course input (either analog resolver or ARINC 429) for GPS operation in
OBS mode, press MENU on the MAIN CDI/OBS CONFIG page and select “Ignore SEL CRS or GPS?”.
When OBS mode is selected, the selected course is entered on the controls of the 500 Series unit. If
ignoring the selected course input such that the VOR valid flag is dependent only on a valid VOR signal,
with lateral deviation calculated by another display device, press MENU on the MAIN CDI/OBS CONFIG
page and select “Ignore SEL CRS for VLOC?”.
Figure 5-9.
MAIN CDI/OBS CONFIG Page