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IntuVue RDR-4000 Weather Radar Pilot's Guide
SECTION 3: EXPANDED OPERATING INSTRUCTIONS
TURN ON AND TEST
The on-ground system test may be performed by
the flight crew or by maintenance personnel. This
test will provide a comprehensive check of system
performance.
1. Select weather (WXR) on at least one display.
2. Set the radar system controls as follows:
a. System Control: TEST.
b. Gain: CAL.
c. Range Selection: any range.
The system initiates Built-In Test (BIT) when TEST mode is selected for
at least five seconds. While in TEST mode, a test pattern is transmitted
to the active displays. The following table indicates the timing sequence
of visual and aural alerts.
Time
TEST Selected
PWS FAIL/INOP
PWS VISUAL
ALERTS
PWS AURAL
ALERTS
DISPLAY
"Whoop, Whoop," or "Monitor Radar Display" is selected at installation.
3. Check the displays:
a. Confirm the presence of test bands. See examples on page 7.
b. Confirm that the alphanumeric legends are displayed.
c. It may take up to 20 seconds after test completion for fault
messages to appear. If no fault appears, the test is successful.
d. If the test bands are missing and the name of a line replaceable
unit (LRU) appears on the display, there is a fault in that unit.
Refer to FAULT ANNUNCIATIONS on page 36.
4. For dual systems, repeat the test sequence on the other side.
The antenna will remain parked except for a brief test where a box-
shaped scan pattern is performed once. This test does not pose a
hazard to personnel on the ground. Test mode will complete in
approximately 50 seconds. Some electronic displays may display test
information differently. Refer to the Airplane Flight Manual or
Supplement for specific annunciations related to the weather radar.
060-4492-000
Rev 7, February 2015
Approx.
Approx.
2 Sec.
4 Sec.
On
OFF (ON if failure is detected)
Amber
Off
(WINDSHEAR)
Tone "Whoop, Whoop"
None
or "Monitor Radar
Display"
Normal Test Pattern (No PWS Icon)
Approx.
6 Sec.
Red
(WINDSHEAR)
"Go Around, Windshear
Ahead, ... Windshear
Ahead, Windshear Ahead"
Expanded Operating Instructions
11
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