0N800907A.pdf

APPLICATION REVISIONS

NEXT ASSY USED ON LTR DESCRIPTION DATE APPROVED

GENERAL USE AIRTERM

A INITIAL RELEASE PER ECN 6036:01 10/1/27

SOURCE CONTROL DRAWING

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REV A A A A A A A A A A A A A A A A A A A A REV STATUS

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UNLESS OTHERWISE SPECIFIED DRAWN BY: DATE

DIMENSIONS ARE IN INCHES: DEPARTMENT OF DEFENSE

TOLERANCES ON CHECKED BY:

FRACTIONS TWO PLACE DECIMALS

+ + CONTRACTOR VERIFICATION:

ANGLES THREE PLACE DECIMALS

DISPLAY, OPTOELECTRONIC ‐ LCD

DESIGN APPROVAL: SIZE CODE IDENT DWG NO. REMOVE ALL BURRS AND SHARP EDGES.

DIMENSIONS AND TOLERANCES SHALL BE

HELD AFTER PLATING.

MACHINE SURFACES TO BE √ RMS.

A 98230 0N800907

MATERIAL DOCUMENTATION APPROVAL: SCALE CONTRACT NO. SHEET

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All drawings to be interpreted in accordance with NSA DS‐61. Not releasable to Defense Technical Information Center (DTIC) per DOD directive 3200.12.

Distribution of copies of this drawing (0N800907) is limited to the United States of America ONLY.

DISTRIBUTION LIMITED TO U.S. GOVERNMENT

AGENCIES ONLY. THIS DOCUMENT CONTAINS

NSA INFORMATION. DATE 94‐12‐07. REQUEST

FOR THIS DOCUMENT MUST BE REFERRED TO

THE DIRECTOR, NSA

REV LVL

A

SIZE CODE IDENT DWG NO.

A 98230 0N800907

SCALE CONTRACT NO. SHEET

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1. SCOPE

1.1 Scope. This specification contains the detail requirements for a high reliability, negative image, liquid crystal display module that is compliant with the night vision lighting specification MIL‐L‐85762.

1.2 Absolute maximum ratings. Exceeding the absolute maximum ratings listed below may cause permanent damage to the display.

Logic supply voltage ‐0.3 to +7VDC

Heater supply voltage 0 to +30 VDC

Backlighting voltage 5 VDC

Voltage at any input ‐0.3 V to VDD + 0.3V

DC current drain per input pin 10mA

Heater Power dissipation 7 Watts

Operating temperature range ‐46°C to +75°C

Operating altitude 45,000 feet

Storage temperature range ‐57° to +95°C

Storage altitude 50,000 feet

2. APPLICABLE DOCUMENTS.

2.1 Applicable Documents. The following documents of the issue in effect on the date of invitation for bids, or request for proposal form a part of this specification to the extent specified herein.

STANDARDS

Military

MIL‐STD‐198 Capacitors, Selection and Use of

MIL‐STD‐199 Resistors, Selection and Use of

MIL‐STD‐202 Test methods for Electronic and Electrical Component parts.

MIL‐STD‐454 Standard General Requirements for Electronic Equipment.

MIL‐STD‐461 Electromagnetic Emission and Susceptibility Requirements for Control of Electromagnetic Interference.

MIL‐STD‐462 Electromagnetic Interference Characteristics, Measurement of

MIL‐STD‐810 Environmental Test Methods and Engineering Guidelines

MIL‐STD‐883 Test methods and procedures for microcircuits

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MIL‐STD‐1285 Marking of Electrical and Electronic Parts

MIL‐STD‐1286 Electrostatic discharge control program protection of electronic and electrical parts

MIL‐STD‐105 Sampling Procedures and Tables for Inspection by Attributes

MS24367 Lamp, Incandescent ‐ Miniature, Integral Lighting

MS90451 Lamp, Incandescent, T‐1 Bulb, Short, Integral Lighting

MS90452 Lamp, Incandescent, T‐3/4 Bulb, Integral Lighting

SPECIFICATIONS

Military

MIL‐L‐85762 Lighting, Aircraft, Interior, Night Vision Imaging System (NVIS) compatible

MIL‐C‐5541 Chemical Conversion Coating on Aluminum and Aluminum Alloys

MIL‐F‐14072 Finishes for Ground Electronic Equipment: General Specifications for

MIL‐C‐14806 Coating, Reflection Reducing for Instrument Cover Glasses and Lighting Wedges

MIL‐E‐17555 Electronic and Electrical Equipment, Accessories and Repair Parts, Packaging and Packaging of

MIL‐S‐1950 General Specification for Semiconductor Devices

MIL‐I‐45208 Inspection Systems Requirements

MIL‐G‐45204 Gold Plating, electrodeposited

Federal

QQ‐A‐250 Aluminum and Aluminum Alloy, Plate and Sheet, General specification for

QQ‐A‐596 Aluminum Alloy Permanent and Semi‐Permanent, Mold Castings

QQ‐B‐750 Bronze, Phosphor, Bar, Plate, Rod, Sheet, Strip, Flat Wire and Structural and Special Shaped Sections

QQ‐W‐343 Wire, Electrical, Copper (Uninsulated)

2.2 Order of precedence. In the event of conflict between the requirements of this specification and those listed, the requirements of this specification shall govern.

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3. REQUIREMENTS.

3.1 Item requirements. The individual item requirements shall be in accordance with this specification.

3.2 Design, materials and construction. The liquid crystal display shall consist of a negative image panel with heater incandescent or LED lamps, and supporting electronics housed within an aluminum enclosure. Any materials used in the completed liquid crystal display that are not covered by a particular specification or standard shall be capable of meeting the performance and environmental requirements of this specification. No changes in the design or processing of the display will be made without prior written approval of the procuring activity.

3.2.1 Housing. The liquid crystal display housing shall be constructed with aluminum alloy in accordance with QQ‐A‐250/11, Alloy 6061, Temper T651 or QQ‐A‐596, Alloy 356, Temper T6. The housing physical dimensions shall be in accordance with figure 1 herein. The front housing surfaces shall be passivated, primed and painted in accordance with paragraph 3.9 of MIL‐F‐14072 for a P511B or a P513.1B paint system. Surfaces identified in figure 1 as not being painted shall be chem. Film coated in accordance with MIL‐C‐5541, (primer in paint not required). The areas coated with chem. Film only shall maintain electrical conductivity.

3.2.2 Display panel. The liquid crystal display panel shall display information in the form of eight 14‐segment characters, three 7‐segment characters, and eleven annunciators. The outer front surface of the display assy shall be constructed with either Borosilicate (Pyrex) or Vicor (96% Silica) glass. The display panel shall have resistive heater film or layer that is integrally attached to the rear surface of the display panel. The heater shall be transparent to the extent that it does not prohibit compliance to the lighting requirements of this specification.

32.2.1 Antireflective coating. The outer glass surface shall have an antireflective coating in accordance with MIL‐C‐14806. Reflectance shall be as follows:

Wavelength Reflectance 0° to 15° from normal

440 ‐ 460 NM 0.6 percent maximum

460 – 660 NM 0.5 percent maximum

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3.2.2.2 Character description. The display’s characters shall be physically oriented as shown in figure 2 and shall meet the following requirements:

A.Eight‐14 segment characters

1. Character height: 0.780 / .005

2. Character width: .6 x Character height, min

3. Segment width: .1 x Character height, typ

4. Character spacing: 1 segment width, min

B.Three‐7 segment characters + nine (letter) annunciators

1. Character height: 0.110 ? .005

2. Character width; .6 x Character height, min

3. Segment width: .1 x Character height, min

4. Character spacing: 1 segment width, min

C. “Key” annunciator

1. See figure 2 for relative size

D. Viewing area at plane of display: 1.68 X .58 +0.010

E. Viewing angle from normal of cell surface: 60° minimum (from any direction)

3.2.3 Back lighting. The liquid crystal display shall contain incandescent lamps in accordance with MS24367, MS90451, or MS90452. Alternatively, LED lamps may be used. The lamps shall provide the back lighting necessary to meet the requirements specified in paragraph 3.4.4 herein.

3.2.4 Electronic components. The electronic used in the display module shall be of sufficient quality and reliability to meet the requirements and tests specified herein.

3.2.4.1 ESD sensitivity. Microcircuits and discrete semiconductors used within the display shall be Class 2 sensitivity when tested in accordance with MIL‐STD‐1686. If Class 2 devices are not available, then appropriate precaution per MIL‐STD‐1686 shall be followed.

3.2.5 Connector. The display shall possess a 12 pin electrical connector in accordance with the requirements specified herein. The connector used shall be the Ulti‐Mate’s C152N0001 connector, or equivalent. The connector housing shall be polyphenylene sulfide ryton plastic.

The mating contacts shall be stamped perylium copper. The mating contacts finish shall be tin, time‐lead, or solder dipped. The mating contacts shall be connected to the wire contacts by a crimp and spot weld. Four of the connector’s mating pin cavities shall be filled with fungus inert epoxy or RTV. Excessive epoxy or RTV that affects proper mating is not allowed as well as epoxy or RTV contamination on connector pins. The epoxy or RTV shall not degrade or cause housing damage when displays are tested in accordance with the requirements specified herein. The connector shall be mounted in the display’s housing and shall be in accordance with figure 1 herein.

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3.2.5.1 Electrical signal pin assignment. The display electrical signals shall be assigned to the connector pins as follows:

Pin no. Signal Name Description 1 Lam Power Backlight Power 2 Lamp Return Backlight Return 3 Heater Power Heater Power 4 Heater Return Heater Return 5 Ground Chassis Ground 6 VDD +5.1 VDC Logic Supply 7 VSS Logic Ground 8 DIN Data In 9 CLK Clock 10 LOAD Load Data 11 T1 Test Input 1 12 T2 Test Input 2

3.3 Electrical performance characteristics. Unless specified herein, the electrical performance characteristics shall be as specified in table I herein and shall apply over the full specified operating temperature range.

3.3.1 CMOS compatibility. The display shall be capable of being driven by CMOS logic levels.

3.3.2 Circuit isolation. The display circuit, heater circuit and back lighting circuit shall be electrically isolated from each other. The non‐performance of one of the circuits shall not n any way affect the operation of the others.

3.4 Functional characteristics. All displays shall be capable of full functional operation over the full operating temperature range. Full functional operation is defined as proper display operation within the response time specified herein. Proper operation is also defined, for all of the different combinations of the segment code, as the activation of only the segments of each digit specified on (active) in the segment code message. The back lighting shall function normally without intermittent operation, obvious dark spots, or loss of color or uniformity.

Testing shall be in accordance with paragraph 4.3.12 herein.

3.4.1 Segment code message format and timing. The segment code activation information shall be transferred to the display as part of the segment code message in accordance with table II herein. The segment code message is transferred to the display as serial data NRZ format at a 40 KHz rate in accordance with the segment code message timing requirements in accordance with figure 3 herein.

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3.4.2 Display response time. Display response time shall be defined as the time for the segment contrast to change from 0% to 30% of maximum contrast or from 100% to 10% of maximum contrast. The display shall be capable of meeting a response time of .33 seconds over the full operating temperature range when tested according to paragraph 4.3.14 herein.

3.4.3 Heater function. When necessary, the display heater shall be capable of raising the temperature of the LCD glass to a level that will allow the display to perform full function operation within 2 minutes after a minimum soak of 2 hours at any temperature with the storage temperature range followed by a .5 hour soak at any temperature within the operating temperature range. The full functional operation shall be met with heater voltages from +21V +27V. In addition, the heater shall be capable of operating while sustaining no permanent damage (and with performance degradation allowed) over the voltage range of +17V to +30V.

3.4.4 Lighting requirements. The display shall meet the lighting requirements of MIL‐L‐85762, Type I. Class A for alphanumeric of primary lighting systems, and s specified herein. The display shall have an initial brightness of 1.0 + foot lamberts at the voltage specified in 4.3.13.1 herein.

Lighting shall be linearly dimmable from full brightness to 1.0 X 105 foot lamberts (visual zero) by reducing the input voltage from ‐5 VDC to 0 VDC. The lighting requirements shall be tested per paragraph 4.3.13 herein.

3.4.4.1 Lighting power supply. The lamps shall be capable of operating from any supply voltage from 0 VDC to ‐5 VD.

3.4.5 Logic supply. The 5.1 VDC logic supply shall have an initial accuracy of +1% and shall be regulated to +200 mV max under load changes. The peak to peak ripple and noise shall be +2% maximum.

3.5 Environmental requirements. Displays shall be capable of meeting the environmental test requirements specified herein. The displays shall not suffer any mechanical, electrical or functional damage or degradation in performance.

3.5.1 Operating range. The displays shall maintain a full functional operation with no damage or degradation of the mechanical, electrical or functional performance over the following ranges:

A. Operating temperature range: ‐46°C to +75°C B. Operating altitude range: 0 to 40,000 feet

3.5.2 Non‐operating range. The displays shall be capable of storage for an extended period of time with no damage or degradation of the mechanical, electrical or functional performance over the following ranges:

A. Storage temperature range: ‐57°C to +95°C B. Storage altitude range: 0 to 50,000 feet

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3.6 Marking. The devices shall be marked in accordance with the following information as a minimum, in accordance with MIL‐STD‐1285.

A. Vendors name, symbol, or CAGE B. Manufacturer’s complete or abbreviated part number C. Lot identification code or date code D. ESD sensitivity identifier (may be used as index point) E. Index point

3.7 Workmanship. Display modules shall be processed in accordance with MIL‐STD‐454, requirements 9 and 12.

3.8 Touch temperature. All displays shall be capable of passing the touch temperature requirement of MIL‐STD‐454 requirement 1.

3.9 Change notification. No changes in design, materials, or processes shall be made without the prior written consent of the procuring activity.

4. QUALITY ASSURANCE PROVISIONS

4.1 Responsibility for inspection. The manufacturer is responsible for the performance of all inspections specified herein. The procuring activity reserves the right to perform any of the inspections set forth in this specification. A quality assurance program shall be conducted at the suppliers facility in accordance with the requirements of MIL‐I‐45208 or equivalent that is acceptable to the procuring activity.

4.2 Classification of examination and tests. The examinations and tests required to assure conformance to the specified product assurance levels are classified as follows:

A. Qualification (see 4.2.1 herein) B. Electronic component inspection (see 4.2.2 herein) C. Screening inspection (see 4.2.3 herein) D. Quality conformance inspection (see 4.2.4 herein)

4.2.1 Qualification inspection. Qualification inspection shall consists of the tests shown in table III and shall be performed on sample units produced with equipment and procedures used in production. Data may be used for some tests with the approval of the procuring activity.

4.2.1.1 Sample size and procedure. The qualification sample size shall be 6, and the inspection procedure shall be per table III herein. If any failure occurs, the procuring activity shall be notified for approval of corrective action and for determination of any additional qualification requirements that are deemed necessary.

4.2.2 Electronic component inspection. Electronic component inspection shall consist of certification supported by verifying data that the electrical components used in the manufacture of the displays are in accordance with paragraph 3.2.4 herein.

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4.2.3 Screening. All units applied to this specification shall be screened in accordance with the test of table IV herein in the order shown. Additional tests necessary to assure compliance to the requirements of this specification may be performed.

4.2.3.1 Display burn‐in. Completed display modules shall be subjected to the display burn‐in, consisting of applying logic, display, lamp, and heater supply voltages to the display on accordance with the display burn‐in test cycle as specified in Figure 5 herein, for a total of 24 hours, minimum.

4.2.4 Quality conformance inspection. The quality conformance inspection shall consist of Group A examinations and tests, as specified in table V herein.

4.2.4.1 Sampling plan. Statistical sampling and inspection shall be in accordance with MIL‐STD‐105 for general inspection. The acceptable quality levels (AQL) shall be as specified in table V.

4.2.4.2 Inspection lot. An inspection lot shall consist of a quality of display modules produced under essentially the same conditions and processes, and offered for inspection at one time.

4.3 Methods of examination. Displays shall be examined and tested in accordance with them methods and procedures specified herein.

4.3.1 High temperature exposure. High temperature test shall be performed in accordance with Method 501 of MIL‐STD‐810. Storage tests shall be performed per procedure I at +95°C for 48 hours. Operating tests shall be performed per procedure II at +75°C for 4 hours.

4.3.2 Low temperature exposure. Low temperature test shall be performed in accordance with Method 502 of MIL‐STD‐883. Storage tests shall be performed per procedure I at ‐57°C for 72 hours. Operating tests shall be performed per procedure II at ‐46°C for 4 hours.

4.3.3 Thermal shock. Thermal shock tests shall be performed in accordance with Method 503 of MIL‐ STD‐810. The temperature extremes shall be ‐46°C and +75°C with a soak of 1 hour minimum at each extreme.

4.3.4 Vibration. The vibration test profile shall be random vibration spectrum as specified in figure 6 herein. The duration shall be 1 hour in each of the three mutually perpendicular axes. The display shall be operational during this test.

4.3.5 Mechanical shock. Mechanical shock tests shall be performed in accordance with method 213 of MIL‐STD‐202, test condition C, 100g half sine pulse, and 6 milliseconds duration.

4.3.6 Seal. The seal test shall be performed in accordance with MIL‐STD‐202, Method 112, test condition B or C with a maximum leak rate of 5 X 105 ATM CC/SEC.

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4.3.7 Operating endurance. The operating endurance test shall consist of subjecting the displays to temperature cycling and vibration. The temperature cycle shall be specified in figure 8 herein and shall be repeated for 1500 hours of test cycle time. The vibration shall be as specified in figure 7 herein and shall have a direction perpendicular to the mounting plane. Vibration shall be applied to the test units for the entire 1500 hours.

4.3.8 Solar radiation. The solar radiation test shall be performed in accordance with Method 505 of MIL‐STD‐810, procedure II, repeated cycles of 20 hours at 1120 W/m2 and 4 hours of “lights off”. Display power, as a minimum, shall be applied during the test. The duration of the test shall be 10 cycles.

4.3.9 Fungus. The fungus test shall be performed in accordance with Method 508 of MIL‐STD‐810, procedure I. Certification may be used in lieu of testing if accepted by the procuring activity.

4.3.10 Electromagnetic interference. The displays shall meet the radiated requirements of MIL‐STD‐ 461 and MIL‐STD‐462 for class A1 equipment. Applicable test methods are RE01; RE02 curve 1, RS01, RS02 spikes 1 and 2, and RS03 at 20 V/M.

4.3.11 Electrical characteristics. Displays shall be tested at the specified temperature in accordance with test conditions, as specified in table I herein.

4.3.12 Functional characteristics. Displays shall be tested under the test conditions following, and in accordance with a test method which will test for the proper operation of the display as defined herein. Testing shall include all the combinations of the segment code. Displays shall also be tested in accordance with one of the two test procedures detailed below:

Test conditions Test procedure A test to the following:

Test procedure B test to the following :

VDD = 5V + .25V 1. TA = 25°C + 5° C 1. TA = 46°C + 2° C

HTR HI = 24V + 10% 2. TA = 25°C + 5° C

Lamp supply = ‐5 VDC 3. TA = 75°C + 2° C

4.3.13 Lighting characteristics. The lighting characteristics of chromaticity, brightness, contrast and spectral radiance shall be tested in accordance with MIL‐L‐85762 as modified herein. For brightness, the values to be reported shall be an average of the individual brightness measurements for each character or annunciator, except that no single measurement may be more than 20 percent above or below the specification limits for brightness. A minimum of two segments for each character and two points within each annunciator (if annunciator size permits) shall be measured. For spectral radiance, the backlighting shall not be obstructed during the test.

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4.3.13.1 Lighting test voltages. Backlighting test voltages for all lighting tests shall be ‐5 VDC. For qualification ‐5 VDC shall be used. For quality conformance inspection, only ‐5V shall be used.

4.3.14 Display response time. The display response time shall be measured at temperature of ‐46°C, +25°C, and +75°C after a minimum soak of 2 hours at the specified soak temperature. The soak temperature shall be the same as the measurement temperatures except for ‐46°C which shall be soaked at ‐57°C and +75°C which shall be soaked at +95°C. The displays shall be allowed to stabilize for 30 minutes maximum at measurement temperature before testing. Display response time shall be measured within 2 minutes (maximum warm‐up time) after application of the HTR HI voltage of 21V. The display response time shall be measured at 25°C with equipment capable of measuring the display response. The display response at ‐46°C and +75°C may be verified by resolving with the unaided eye messages that are being updated at a frequency of approximately .33 seconds minimum.

4.3.15 Extended voltage test. The extended voltage test shall consist of applying HTR HI voltages of +17V and +27V to the module for a period of 1 minute minimum. The temperature shall be ‐ 46°C and the logic, display and lamp voltages shall be applied. After application of the voltages, the module shall be tested for full functional operation.

4.3.16 Visual examination. Display modules shall be examined to verify that the materials, design, construction, marking, color and workmanship are in accordance with the applicable requirements.

4.3.17 Mechanical examination. The displays shall be examined to verify that the physical dimensions of Figure 1 herein have been met.

4.3.18 Rain. The rain test shall be performed in accordance with MIL‐STD‐810, method 506, procedure I. the rate shall be 4 inches/hour minimum. The wind velocity shall be 40 miles/hour minimum. The test shall be performed for thirty minutes minimum with the display operational during the last 10 minutes.

4.4 Data requirements. An attributes summary of all screening and quality conformance test data shall be on file at the vendors facilities for at least 5 years from the date of test. This data shall available for review by procuring activity.

5. PREPARATION FOR DELIVERY

5.1 Packaging. The device shall be packaged in accordance with Mil‐E‐17555, Level C. In addition, the display shall be electrostatic protected in accordance with MIL‐STD‐1686.

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6. NOTES

6.1 Approved supplier source(s) of supply. Only the item described on this drawing when procured from the vendor(s) listed heron is approved by the procuring activity for use in the application(s) specified heron. A substitute item shall not be used without prior approval of the procuring activity. Identification of the approved source(s) of supply hereon is not to be construed as a guarantee of present or continued availability as a source of supply for the item(s).

(A) Canadian Marconi Co (B) Aerospace Display Systems, Inc.

600 Dr. Frederik Philips Blvd. 2321 Topaz Drive Ville Saint‐Lauren, Quebec Hatfield, PA 19440 Canada H4M 2S9

CAGE: 90073 CAGE: 65007

(C) Grayhill, Inc. (D) 561 Hillgrove Ave.

P.O. Box 10373 La Grange, IL 60525

CAGE: 81073

A B C IDENTIFYING

PART NO.

CONTRACTOR’S

REFERENCE PART NO.

VENDOR

PART NO.

VENDOR

PART NO.

VENDOR

PART NO.

0N616802‐1 1525839‐1 622‐960991‐000 DNM‐100‐163 93YY5199‐1

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TABLE I. Electrical performance characteristics

Unless otherwise specified, VDD=5.1V+5%, TA=46°C to +75°C.

PARAMETER SYMBOL CONDITIONS MIN MAX UNITS

Operating Voltage

VDD 4.75 5.25 V

Supply Current IDD 5 Ma

Input Low Voltage

VIL 0 .6 v

Input High Voltage

VIH 2 VDD v

Input Current IIN VDD=0 TO 5V 5 ocA

Input Capacitance

CI 100 pF

Heater Current

IHR VHR=24V 185 mA

Lamp Current ILamp VLamp= 330 mA

Clock Period tCL 1200 nS

Clock Pulse Width tCW 520 nS

Data‐in Setup tCW 300 nS

Data‐in Hold tDS 400 nS

Load Setup to Clock tDH 500 nS

Load Pulse Width tLW 500 nS

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TABLE II. Segment code message format

BIT # TITLE BIT # TITLE BIT # TITLE BIT # TITLE BIT # TITLE

1 F11 36 1/ 71 B4 106 C10 141 L7

2 G11 37 1/ 72 J4 107 D10 142 KEY

3 B10 38 1/ 73 H4 108 E10 143 M7 4 A10 39 1/ 74 A4 109 C9 144 N7 5 F10 40 1/ 75 G4 110 D9 145 E7 6 G10 41 B8 76 F4 111 E9 146 P7 7 H1 42 J8 77 A1 112 1/ 147 C6 8 J1 43 H8 78 G1 113 1/ 148 L6

9 B10 44 "EB' 79 F1 114 1/ 149 D6

10 K1 45 A8 80 P1 115 1/ 150 M6

11 C1 46 G8 81 "TX" 116 1/ 151 N6

12 P2 47 F8 82 E1 117 1/ 152 E6 13 F2 48 B7 83 N1 118 1/ 153 P6 14 G2 49 J7 84 M1 119 1/ 154 "D_ 15 A2 50 H7 85 A11 120 1/ 155 C5 16 H2 51 A7 86 D1 121 1/ 156 L5 17 J2 52 G7 87 B11 122 1/ 157 D5 18 B2 53 F7 88 C11 123 G9 158 M5

19 "RX" 54 "NB" 89 D11 124 F9 159 N5

20 P3 55 K6 90 E11 125 A9 160 E5 21 F3 56 B6 91 "." 126 B9 161 P5 22 G3 57 J6 92 L1 127 1/ 162 L4 23 A3 58 H6 93 "K" 128 1/ 163 C4

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TABLE II. Segment code message format (continued)

BIT # TITLE BIT # TITLE BIT # TITLE BIT # TITLE BIT # TITLE

24 H3 59 A6 94 E2 129 K8 164 D4 25 J3 60 G6 95 N2 130 C8 165 M4 26 B3 61 F6 96 M2 131 L8 166 N4

27 P4 62 K5 97 D2 132 "PT" 167 E4

28 1/ 63 B5 98 L2 133 D8 168 "V" 29 1/ 64 J5 99 C2 134 M8 169 K3 30 1/ 65 H5 100 K2 135 N8 170 C3 31 1/ 66 A5 101 E3 136 E8 32 1/ 67 G5 102 N3 137 P8 33 1/ 68 F5 103 M3 138 K7

34 1/ 69 "WB" 104 D3 139 C7

35 1/ 70 K4 105 L3 140 D7

NOTES:

1/ This bit is not associated with any segments or annunciators.

2. Bit number 1 is the first bit to be shifted into the display.

3. Each message must consist of 170 bits.

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TABLE III. Qualification Inspection Procedure

Examination or test Test procedure or para. herein

Units to inspect

Group 1 6 Visual examination 4.3.16 Mechanical examination 4.3.17 Lighting characteristics 4.3.13 High temperature 4.3.1 Low temperature 4.3.2 Thermal shock 4.3.3 Vibration 4.3.4 Mechanical shock 4.3.5

Humidity

MIL‐STD‐810

method 507 procedure III

Seal 4.3.6 Electrical characteristics 4.3.11 Functional Characteristics (Test procedure B)

4.3.12

Group II 1/ 2

Resistant to solvents

MIL‐STD‐883

method 2015

Rain 4.3.18

Dust

MIL‐STD‐810

method 510 procedure I

Salt fog

MIL‐STD‐810

method 509 procedure I

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TABLE III. Qualification Inspection Procedure (continued)

Examination or test Test procedure or para. herein

Units to inspect

Fungus 4.3.9 Group III 1/ 2 3/

Operating endurance 4.3.7

Functional Characteristics (Test procedure A)

4.3.12

Group IV 2/ 2 Solar Radiation 4.3.8

Acceleration

MIL‐STD‐810

method 513 procedures I & II Electromagnetic interference 4.3.10

Explosive atmosphere 4/

MIL‐STD‐810

method 511 altitude of 45K ft.

Altitude

MIL‐STD‐810method 500procedures I, II & IIIoperation to 45K ft.

1/ Samples from Group I

2/ Samples from Group I & Group II

3/ Samples may be increased to 6 with no more than 1 failure allowed

4/ Guaranteed but not necessarily tested

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TABLE IV. 100% Screening

Examination or test Method paragraph Display Burn-in 4.2.3.1 Functional Characteristics (Test procedure A) 4.3.12 Visual Examination 4.3.16

TABLE V. Group A Inspection

Examination or test Method paragraph AQL (% Defective) Lighting Characteristics 4.3.13 1/ Seal 4.3.6 1 Extended Voltage 4.3.15 1 Display Response 4.3.14 2/ Thermal Shock 4.3.3 2/ Functional Characteristics (Test procedure B) 4.3.12 2/ Mechanical Examination 4.3.17 2/

1/ Test 2 displays per production lot, or 2 out of every 50 displays, whichever is greater, no failures.

2/ Test 1 displays per production lot, or 2 out of every 50 displays, whichever is greater, no failures.

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NOTE:

1. The exact segment shape is not mandatory.

FIGURE 2. Character description

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1. Load may also be held high by clocking. In this case the latch is transparent with the falling edge of load latching in data.

2. Power consumption increase for rise/fall times > 100nS.

3. A logic 1 shifted in corresponds to that segments output being out of phase with the backplane.

4. The shift registers load and shifts on falling edge of CLK. Data out changes on the rising edge of CLK.

FIGURE 3. Segment code timing.

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1. Display supply voltage shall be applied at all times.

2. Lamp voltage shall be applied between points A and B and at point C only.

3. Heater voltage shall be applied between points A and B and at point C only.

4. The dwell at each temperature extreme is 2 hours.

FIGURE 5. Burn in test profile.

NONE MDA904‐92‐G‐0216/5001 23 of 25

FIGURE 6. Vibration profile.

NONE MDA904‐92‐G‐0216/5001 24 of 25

FIGURE 7. Operating endurance vibration profile, NONE MDA904‐92‐G‐0216/5001 25 of 25

1. The power on requirement includes logic, display, heater and lamp supplies.

FIGURE 8. Operating endurance temperature profile.

2:

3:

4: