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V 2 > Helmet-Mounted Devices > Flashcards

Helmet-Mounted Devices Flashcards

1
Q

What two major components make up the HDU

A

helmet and DU

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2
Q

What connects the two HVI cable segments

A

QDC

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3
Q

What is the major difference between a visor used with the standard HGU-55/P and one used with JHMCS, and are they interchangeable?

A

JHMCS displays symblogy and must be fitted to te mask. no

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4
Q

What is the major difference between the iftting process of a standard 55/P and the 55A/P used for the JHMCS.

A

HMD to pupil aligning

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5
Q

How do you determine the IPD of an airctew member

A

measure the distance from the center of one pupil to another in MM

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6
Q

Where is the UHVI located

A

the upper HVi is the portion of the cabling that goes between the helmet liner and the helmet to the HRC (helmet release connector)

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7
Q

What component of the PLZT goggles provides a self check of its operation

A

PTT actuator actuator located above the left front lens on the external frame assembly

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8
Q

Explain what events must take place before the EEU-2/P goggles go into the open mode.

A

the 2 wire bails on the goggles must join with the top latch connector on the visor. Then, the correct electrical power must be applied to the PLZT wafer.

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9
Q

Once in servo mode, what happens if additional hazardous light pulses are detected?

A

closed mode is re-triggered and servo mode restarts

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10
Q

What part of the NVGs allow the intensification of the vision?

A

IIT

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11
Q

Why must you never use an AA alkaline battery instead of a lithium

A

not enough voltage

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12
Q

What will occur if you force the binocular out of the locked position?

A

It wont stay stowed and will bounce around in flight

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13
Q

What should you do if either of the compartments should fail during the battery compartment test?

A

replace mount

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14
Q

What is the maximum range of tilt for the AN/AVS-9(V)

A

10 degrees

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15
Q

What is the range of vertical travel for the AN/AVS-9(V)

A

25MM

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16
Q

What does fine tuning the focus once the diopter is adjusted do?

A
  1. assures aircrew that diopter adj. preforms satisfactory

2. allows and accurate assessment of NVG preformance

17
Q

What are the minor adjustments an aircrew will do as required?

A

vertical, tilt, eye relief adj.

18
Q

How may image intensifiers does the PNVG have

A

4

19
Q

What size are the PNVG ITTs

A

16mm

20
Q

The PNVG eyepiece lens have a fixed focus engineered at the factory of what?

A

fixed focus of -1.0 diopeter

21
Q

Why do ALEP devices have control numbers?

A

Manufacturer tracking in event of query

22
Q

How often do you inspect the ALEP spectacles?

A

on recipt and 180 days there after

23
Q

What inspection criteria do you use to inspect the lens for scratches?

A

inspection critera from AFI 11-301 V4 CH 5

24
Q

What component of the EEU-2/P goggles internal lens holder assembly is replaceable?

A

Controller

25
Q

When referring to NVG, the image produced by the IIT is focused to the?

A

diopter lens

26
Q

The AN/AVS-9 night vision goggles consist of how many major components

A

3

27
Q

What is the maximum VDC the power supply output can be djusted to on the AN/AVS-9(V) night vision goggles

A

3.0

28
Q

Which adjustment control on the AN/AVS-9(V) binocular assembly is used to adjust aircrew lign of sight?

A

tilt

29
Q

How many PSI of nitrogen do you apply to the goggle monocular during leak test?

A

3+-1/2

30
Q

Which solution is used to clean night vision goggle lense?

A

denatured alcohol

31
Q

What wattage light bulb is used for a NVG test lane?

A

7

32
Q

What degrees horizontal is the field of view for the AN/AVS-10(V) panoramic NVG

A

95

33
Q

What is the total weight in grams of the AN/AVS-10(V) PNVG

A

700g

34
Q

Aircrew Laser Eye Protection (ALEP) devices are designed to protect against

A

any laser radiation transmitted through both visible and invisible wavelengths.

35
Q

Where are ALEP assets stored

A

a locked storage container

36
Q

How often are the ALEP glasses inspected after receipt?

A

180 days

37
Q

How are ALEP devices fitted on the aircrew member

A

as close to the face as possible to maximize the area of protected vision.

V 2 (11 decks)

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