CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
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EFFECTIVITY:
INFRARED SENSORS
1. DESCRIPTION
That portion of the system that uses heat sensing devices such as infra-red scanners, infra-red image and
detection to acquire information. This includes the Enhanced Vision System.
The Enhanced Vision System (EVS) is an electro-optical system that uses a Long-Wave Infrared (IR) cam-
era to enhance situational awareness. Infrared red is particularly effective at night, smoke, haze, and smog
in addition to a broad spectrum of rain, snow, and radiation-type fog. EVS is an aid to visual acquisitions of:
• Ground vehicles and other ground-based equipment/obstacles,
• Aircraft on taxi-ways and runways,
• Other traffic during takeoff, approach, and landing,
• Runway and taxi lights,
• Runway and terrain features during climb, descent, and low altitude maneuvering.
The EVS sensor, located on the underside of the LH wing, contains a long-wave infrared camera that pro-
duces a infrared image and a low-light CMOS camera that produces a visible image. The two images are
then combined to produce a single monochrome image that is transmitted directly to the MFD. Upon
power-up the sensor requires approximately 90 seconds to produce a usable image.
28 VDC for Enhanced Vision System operation is supplied through the 5-amp EVS CAMERA circuit
breaker on Main Bus 3. Refer to the manufacturer’s approved Instructions For Continued Airworthiness.
15 Jun 2010
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EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
19 Sep 2017
2. TROUBLESHOOTING
Trouble - PFD Probable Cause Remedy
Video image not displayed. Software not configured. Perform Adjustment/Test - Per-
spective Integrated Avionics Sys-
tem Software Setup, selecting the
EVS option. (Refer to 42-20)
No power to EVS unit. Following initial power-up, listen
for series of clicks as camera
shutters open and close. If cam-
era doesn’t power on, verify secu-
rity of connectors and wire
harness.
Display not receiving image infor-
mation.
Verify security of connectors and
wire harness.
Halo Images. As sensor windows are heated,
infrared detector not able to com-
pensate for signal from window, as
compared to outside view, so a
white (hot) area may appear
around image perimeter.
Turn system on during preflight or
run-up to stabilize window and
body heaters prior to flight and
allow thermal stabilization.
Image degraded, or possibly even
displayed as solid black or solid
white.
Improper display settings. Following initial power-up, adjust
brightness and contrast settings
to obtain the best image.
Display is visible but has an X and
some bars through the image.
Anti-Tamper device not connected
properly.
Verify anti-tamper device is con-
nected to the proper pin.
Faulty wiring. Check wiring connecting anti-tam-
per device.
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
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Serials w/ Perspective Avionics
EFFECTIVITY:
3. MAINTENANCE PRACTICES
A. Enhanced Vision System (EVS) Camera - Serials w/ Perspective Avionics (See Figure 93-501)
(1) Removal - EVS Camera
(a) Set BAT 1, BAT 2, and AVIONICS switches to OFF positions.
(b) Pull EVS CAMERA circuit breaker.
(c) Remove wing access panel LW5. (Refer to 06-00)
(d) Disconnect wire harness connector from camera.
(e) Remove bolts and washers securing camera, gasket, and spacer to wing.
(f) Remove screw securing spacer and gasket to camera.
(g) Remove camera, gasket, and spacer from airplane.
(h) Remove remaining sealant from wing.
(2) Installation - EVS Camera
(a) Acquire necessary tools, equipment, and supplies.
(b) Connect wire harness connector to camera.
(c) Apply Loctite to bolt threads. (Refer to 20-40)
(d) Position spacer and gasket on camera and secure with screw through forward inboard
hole.
(e) Position spacer, gasket, and camera to wing and secure with bolts and washers.
(f) Use sealant to fillet seal spacer base. (Refer to 20-10)
(g) Install wing access panel LW5. (Refer to 06-00)
(h) Reset EVS CAMERA circuit breaker.
(i) Perform Operational Test - EVS Camera. (Refer to 93-50)
(3) Operational Test - EVS Camera
(a) Pull STARTER RELAY and FUEL PUMP RELAY circuit breakers.
(b) Set BAT 1 switch to ON position.
(c) Allow PFD and MFD to initialize for approximately one minute.
(d) On MFD, select Aux-Video
page.
(e) Verify EVS video is displayed on top section of MFD.
(f) Verify no part of aircraft, excluding propeller, is visible in displayed video field-of-view.
(g) Set BAT 1 switch to OFF position.
(h) Reset STARTER RELAY and FUEL PUMP RELAY circuit breakers.
Description P/N or Spec. Supplier Purpose
Loctite® 222 or 222MS Any Source Secure EVS cam-
era.
Caulk Sealant (Refer to 51-30) (Refer to 51-30) Weather sealant.
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Serials 22-3026 thru 22-4186 w/ Perspective Avionics,
22T-0001 thru 22T-1003
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
19 Sep 2017
Figure 93-501
EVS Camera Installation - Serials 22-3026 thru 22-4186 w/ Perspective Avionics, 22T-0001 thru 22T-1003 (1 of 2)
6
Serials 22-3026 thru 22-4186, 22T-0001 thru 22T-1003.
1
2
3
4
5
SR22_MM93_2862
LEGEND
1. EVS Camera
2. Gasket
3. Spacer
4. Bolt
5. Washer
6. Screw
LEFT WING
(REF)
B
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
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Serials 22-4187 & subs, 22T-1004 & subs
EFFECTIVITY:
Figure 93-501
EVS Camera Installation - Serials 22-4187 & subs, 22T-1004 & subs (Sheet 2 of 2)
B
DETAIL
LEGEND
1. EVS Camera
2. Gasket
3. Spacer
4. Bolt
5. Washer
1
2
3
4
5
Serials 22-4187 & subs, 22T-1004 & subs.
LEFT WING
(REF)
SR22_MM93_4682
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EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
19 Sep 2017
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