1、MIL-T- 240 15A(AS) 9 June 1967 MIL I TARY SPEC IF ICATION h TRAhTSMITING SET, TELEMETRY DATA m/AKT-21 This Military Specification has been approved by the Naval Air Sys tem Command, Department of the Navy . 1. SCOPE 1.1 Scope.- This specification establishes the general design and performance requir
2、ements for a telemetry transmitting set intended for use in QT-33 or BMQ-34A 6 E targets in order to provide data facilitating remote control of these targets. mitting set shall be of the FM/FM type and shall contain 10 channels. The telemetry trans- 1.2 Classification.- The telemetry transmitting s
3、et shall consist of the following: I tem Applicable Paragraph Telemetry Trans- mitting Set 3.4.1 2. APPLICABLE Doms 2.1 General.- The following documents of the issue in effect on the date of invitation for bids form a part of this specification to the extent specified herein: SPEC IF ICAT IONS Mil
4、i taiy MIL- C - 17 2 Cases; Bases, Mounting, and Mounts MIL -11- 50 8 8 Wiring; Aircraft, Installation of hl1 L - E - 5 40 O Electronic Equipment, Aircraft, General Specification for IIIL- T - 5 42 2 Testing Environmental Aircraft Electronic Equipment FSC-5821 /- - 1 THIS DOCUMENT CONTAINS 302 PAGES
5、c . . i . .t . -,- .,_. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIGXS Mi li tary $4i.L-I-6181 MIL-E-17555 MI L-D- 18 30 O MIL-T-18303 MIL-N-18307 MIL- R- 2 29 7 3 MI L - T- 2 3 33 6 MIL-STD-422 MIL - STD - 4 7 O FIIL-STD- 471 blIL
6、-STD- 704 blIL- STD- 7 S1 bIIL - STD- 7s 5 bIIL - STD-130 4 In ter fer ence Control Rcqu ircnicnts Aircraft Equipment Preparation for Delivery of Electronic, Miscellaneous Electrical (Except Rotating Electrical Equipment), and Associated Repair Parts Design Data Requirements for Avionics Equipment T
7、est Procedures, Preproduction and Inspection, for Aircraft and Electronic Equipment, Format for Nomenclature and Nameplates for Airborne Electronic and Associated Equipment Reliability Index Determination for Avionic Equipment Models, General Specification for Technical Directives (Letter Type), Pre
8、paration of Telemetry Standards for Missiles and Aircraft Ma in ta inab i 1 i ty Pro gram Requirements blain tainab i 1 i ty Demons trat ion Electric Power, Ai-rcraft, Charac- teristics and Utilization of Re1 iab il ity Tests Requirements for Reliability Programs Re1 iabi 1 i ty Reporting 2 Provided
9、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.2 Availability of Docuxents . - When recues ting specifications, standards, drawings, and pu3lications , refer to bo- however, the external mating connectors shall be supplied as part of the equipment. Extern
10、al 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.5.3 Input Power Connection. - Input power connections shall be in accordaxe with MS 25245. 3.2.6 Interchangeability.- Electrical, mechanical and functional interchangeability is required betwee
11、n assembled units delivered under the pertinent contract and previously produced units. All parts, subassemblies, assemblies and units produced under the pertinent contract shall be electrically, mechanically and functionally interchangeable with like items delivered under the pertinent contract. in
12、terference by the equipment and the vulnerability of the equipment to radio interference shall be controlled within the limits of specification NIL-1-6181. requirements of MIL-STT -470 as concerns corrective maintenance only, and shall be based on the replaceable assembly concept. (N max CT) shall b
13、e less than one hour. 5.2.7 Interference Control.- The generation of radio 3.2.8 Maintainability Provisions.- Shall conform to the 3.2.9 Nomenclature and Nameplates. - Nomenclature assignment and nameplate approval for equipment identification shall be in accordance with specification MIL-N-18307. (
14、See 6.6.6) 3.2.10 Standard Conditions.- The following conditions shall be used to establish normal performance characteristics under standard conditions and for making laboratory bench tests: Temperature Al ti tude Room Ambient (300 +lOC) Normal Ground Vibration None midi ty Room Ambient up to 90 Pe
15、r Cent Relative Humidity Input Power Vol tage Service Conditions.- The equipment shall operate 28.0 +lo% vdc 3.2.11 satisfactorily under any of the environmental service conditions or reasonable combination of these conditions as specified in Specifica- tion MIL-E-5400 for Class 2 equipment as follo
16、ws: 3.2.11.1 Operating Temperature.- Per Table I, Column I 5.2.11.2 Nonoperating Temperature.- Per Table I, Column IX except that the lowest nonoperating temperature is -54OC instead of -62OC. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-T-2
17、4015 (AS) 3.2.11.3 Altitude.- Per Table I, Co1i;mn VIII. 3.2.11.4 Temperature-Altitude Combination.- Per Table I, Colurrin IV. 3.2.11.5 Vibration.- Per Curve I of Figure 2 with no vibration isolators 3.2.11.6 Humidity.- Per paragraph 3.2.24.4. Note that proof testing in accordance with MIL=:T-5422 s
18、hall be for 5 cycles instead of 10 cycles. 3.2.11.7 Shock.- Per paragraph 3.2.24i6.1. 3.2.11.8 Explosive Conditions.- Per paragraph 3.2.24.10 3.2.11.9 Other Requirements.- Sand and dust per paragraph 3.2.24.7, Fungus per paragraph 3.2.24.8 and salt atmosphere per paragraph 3.2.24.9. Sand and dust, f
19、ungus and salt spray testing are not required. 3.2.12 Warmup Time.- The time required for the equipment to warmup prior to operations shall be kept to a minimum, and shall not exceed 1 minute under standard conditions, 5 minutes after 2 bours non- operating at -2OoC, and 20 minutes after non-operati
20、ng at -54 C. 3.2.13 Input Power Requirement Transducer Power Supply, Calibration Network, Multiplexing Network and Inter- connecting Wiring. An Isolator may be required to meet the antenna system mismatch requirements of this specification. Heaters may be required to meet the low temgerature specifi
21、cation performance FG Power Amplifier, requirements. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. -. - _- _ MIL-T-20LSB 58 W 9999906 0352793 3 MIL -T- 2401 53 (AS) 3.4.1.5 Controls anC Displays.- All contr.ols and lights must be externally acces
22、sible ana located on the same surface as the external connectors. The following shall be provided: W Power Switch A switch permitting control of the power supply for the RF transmitter and power amplifier. Provisions shall be incorporated to permit safety wiring of the R.F. power switch in the “on“
23、posit ion. Calibration Switch A pushbutton switch to control the three-point calibration of the subcarrier oscillators. Indicator Lights A light to display the status of the calibration network. 3.4.1.6 Electrical Connections.- Connections to external circuits shall be provlded as tollows: Reference
24、 Receptacle Pin No. and Function ks ignation me 5101 UG - 10 9 4/U RF Output 5102 (input) MS3114E-14-18P or A-Channel 11 Signal 18P or equivalent. B-Channel 12 Signal Bendix PT07E-14- Input Input C-Channel 13 SLgnal Input D-Channel 14 Signai Input E-Channel 5 Signal Input F-Channel 6 Signal Input G-
25、Channel 7 Signal Input H-Channel 8 Signal Input 5-Channel 9 Signal Input K-Channel 10 Signal Input 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-ZqOLSB 58 W 7777706 OL5277q 5 W Reference Designation 5102 (Input) Receptacle me or Bendix or
26、equivalent MS3114E-14-18P FTO7E-14-18P 5103 (Test) MS3114E-14-18S KT07E-14-18S or Bendix or equivalent J1 through J10 Cannon DE-9s or equivalent NIL-T-24015B (AS) Pin So. and Function L- Ground M-Ground N-Ground P-28 vdc Input S -Spar e T- Calibrate Command U-28 vdc Input R-5 Vdc Output A-Channel 5
27、Signal Output B-Channel 6 Signal Output C-Channel 7 Signal Output D-Channel 8 Signal uitput E-Channel 9 Signal Output F-Channel 10 Signal Output G-Channel 11 Signal Output H-Channel 12 Signal Output J-Channel 13 Signal Output K-Channel 14 Signal Output L-28 vdc M-5 vdc N- Spare P-Spare R-Multiplexed
28、 Signal S-Calibrator Output T- Spare U- Ground Subcarrier Oscillator Power Signal Receptacles (see figure 2 for mechanical specifications) 1-Signal Input 2 -Ground 3-Spare 4 - ui tput Monitor 5-Signai Output 6-Chassis Ground 8 - Spare 9 -Spare 7-+28 Vdc 11 Provided by IHSNot for ResaleNo reproductio
29、n or networking permitted without license from IHS-,-,-MI L- T - 2 40 15B (AS) 3.4.2 RF Power Anplifier. - The power amplifier unit shall be Function.- The FF power amplifier increases the amount Contents of Unit.- The power amplifier shall contain fully solid state design and mset the following req
30、uirements. of radio frequency energy available to the transmitting antenna. the circuitry necessary to meet the following requirements. 5.3.3.1 3.4.2.2 Power Output Sufficient to provide a system output of 25 watts minimum under standard conditions and shall remain within 51.5 db kder environmental
31、conditions set forth in 3.2.11, and with input power conditions of +28 vdc 210%. See paragraph 3.3.2 for load mismatch requirements. Output Impedance 50 ohms Input Impedance 50 ohms Frequency Range Driving Power 2 watts minimum Bandwidth 300 KC minkun Controls.- The power amplifier shall contain scr
32、ew- 225 to 260 MC, field tuneable 3.4.2.3 driver adjustments for input and output tuning. 3.4i2.4 Electrical Connections.- Connections to external circuits shall be provided. 3.4.3 RF Transmitter.- The RF transmitter unit shall Function.- ?he RF transmitter is the radio frequency Contents of Unit.-
33、The transmitter shall contain the be fully solid state design and meet the following requirements. generating unit and is frequency-modulated by subcarrier oscillators. circuitry necessary to meet the following requirements. 3.4.3.1 5.4.3.2 Power Output 2 watts minimum and shall remain within kl.Odb
34、 under the environmental conditions set forth in 3.2.11 arid with input power conditions of 28 vdc 210%. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Output Impedance 50 ohms Frequency Range 225 to 260 MC, field tuneable with crystal change Freque
35、ncy Stability kO.01 per cent Mo du1 at ion True FM Deviation Can be deviated to +150KC maxim Modulation 20 cps to 100 KC, 23 db Frequency Range response Spurious Incidental FM less than Modulation 55 KC Modulation 0.01 rms per 1 KC Sensitivity devia tion Modulation 2 per cent maximum for 30 KC Disto
36、rtion deviation at any subcarrier frequency As necessary to comply with Radio Frequency Interference specification MIL-1-6181 3.4.3.3 Controls.- The RF transmitter shall contain the necessary screwdriver adjustments for transmitter tuning. 3.4.3.4 Electrical Connectors.- Connections to external circ
37、uits shall be provided. 3.4.4 Subcarrier Oscillator.- Each subcarrier oscillator shall be solid state and shall meet the following requirements: 3.4.4.1 Functions.- The subcarrier oscillator takes a D.C. voltage input and transfornis it into an A.C. voltage output. exceed tlie size and mounting dime
38、nsions shown in figure 3. 3.4.4.2 Form Factori- The subcarrier oscillator shall not 3.4.4.3 Contents of Unit, - The subcarrier oscillator shall contain the circuitry necessary to meet the following requirements. 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
39、from IHS-,-,-NIL-T-24015B 58 977770b 0352777 O MIL-T-240153 (AS) Input, Instrumentation O to 5 volts D.C. Input Impedance 500K ohms minimum Linearity Drift Output Impedance Output Vo 1 tage Dis tortion Amplitude Modulation Stab i li ty Phasing Center Frequency Stability Input Vol tage 20.3 per cent
40、DBW deviation from the straight line drawn between the upper and lower limits of the oscillator (IRIG Band edges) After 10 minute operation, drift for the next 8-hour period at 25 degrees C is to be less than 0.5 per cent DBW 50K 20% 75 MV to 850 MV P-P into a 10K load Less than 1.0 per cent Less th
41、an +5 per cent Less than I1 per cent DBW shift in frequency for a 110 per cent change in supply voltage Increasing input voltage produces increasing output , frequency I2 per cent DBW from that measured at 25 degrees C over the environmental conditions set forth in 3.2.11 28 210% volts D.C. Provided
42、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-TS.240153 (AS 3.4.4.4 Controls.- The subcarrier oscillator shall contain the necessary ccrewlriver adjustments for setting the frequency limits and the output voltage level. bandedge adjustments to within 1
43、32 DBW of the ideal shall be provided. Note that in the initial system setup, 3.4.4.5 Electrical Connections.- Connections to external circuits shall be provided as follows: Receptacle Pin No. and Function Type Cannon DE-9P 1. or equivalent 2. 3. 4. 5. 6. 7. . 8. 9. Signal Input Ground Spare Output
44、Monitor Signal Output Chassis Ground +28 vdc Spare Spare 3.4.5 Transducer Power Supply. - The transducer power supply shall be solid state design and meet the following requirements: 3.4.5.1 Function.- The transducer power supply converts Contents of Unit.- The transducer power supply the 28 vdc sup
45、ply voltage into a 5-volt D.C. regulated voltage. shall contain the solid state circuitry necessary to meet the following requirements. 3.4.5.2 Output Vol tage 5.0 vdc adjustable 1.2 volts with a tolerance of kO.01 volt Load Current 50 milliamperes maximum Regulation 50.5 per cent for any changes in
46、 load, line voltage or environ- mental conditions required by this specification Ripple Voltage 10 millivolts peak-to-peak Short Circuit Protection As necessary to prevent damage due to short circuit of output terminals Input Voltage 28 vdc +lo per cent 15 Provided by IHSNot for ResaleNo reproductio
47、n or networking permitted without license from IHS-,-,-MIL-T-24015B 58 7777706 0152777 = 3.4.5.3 Controls. - The transducer power suppiy shall Contain a screwdriver adjustment for the output voltage. 3.4.5.4 shall be provided. Electrical Connections.- Connections to external circuits 3.4.6 Calibrati
48、cm Network.- The calibration network shall meet the following requirements: Calibration Steps Three accurate voltage levels applied to the subcarrier oscillator inputs. The calibration voltage shall be obtained from the transducer Power Supply. Calibration Accuracy Calibration Durat ion Calibration
49、Tri gger Calibration Channels Calibration Modes +0,3 per cent of full scale. Wlration of each calibra- tion voltage level to be indefinite . Each calibra- tion level to be stepped upon remote and manual cormnands . 22-32 vdc pulse to be required to step each calibration level. 1 to 10 subcarrier oscil- lators may be calibrated s imul taneou
