IFR T-1401, Operation

Page 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...

Page 2: ...OPERATION eee deshantine f i i 2 10200 West York Street Wichita Kansas 67215 U S A 316 522 498 1 TWX910 741 6952 1002 7101 000...

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Page 4: ...acing deviation The T 1401 weighs 17 5 pounds 7 95 kg and is 16 7 8 inches 42 86 cm wide 16 inches 40 64 cm deep less handles and 3 1 4 inches 8 25 cm high See figure 1 Removal of the op cover gives a...

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Page 6: ...9 9 degrees in 0 1 degree increments Accuracy G A Mode 135 Hz 0 05 degrees G A Mode 15 Hz 0 10 degrees A A Mode 15 Hz 0 10 degrees INV Mode 15 Hz 40 30 degrees 2 Bearing Rate Range 0 to 39 degree s pe...

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Page 8: ...iliary Reference Burst Length 6 pulse pairs in G A X Mode 13 single pulses nominal in G A Y mode Adjustable 1 2 1 or 2 Spacing 24 0 ps in G A X mode 15 0 ps in G A Y mode Adjustable 3 9 ws in 0 1 ps i...

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Page 10: ...edge of the reply Range 25 0 to 89 9 ps in 0 1 ws steps Accuracy 0 1 ws Decoder Window position X Channel centered at 62 0 us Y Channel centered at 74 0 us Accept t0 5 ps Reject 1 0 ps If the reply de...

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Page 12: ...uxiliary Reference Burst 3 0 ps before the first pulse of each A A Interrogation pulse pair Leading Edge is coincident with negative going zero crossing of the 15 Hz sine wave with 180 degrees bearing...

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Page 14: ...ESCUE OF SHOCK VICTIMS DO NOT ATTEMPT TO PULL OR GRAB THE VICTIM 2 IF POSSIBLE TURN OFF THE ELECTRICAL POWER 3 IF YOU CANNOT TURN OFF ELECTRICAL POWER PUSH PULL OR LIFT THE VICTIM TO SAFETY USING A WO...

Page 15: ...DED 4 DEVICES MUST NEVER BE INSERTED INTO NOR REMOVED FROM CIRCUITS WITH POWER ON 5 PG BOARDS WHEN TAKEN OUT OF THE SET MUST BE LAID ON A GROUNDED CONDUCTIVE MAT OR STORED IN A CONDUCTIVE STORAGE BAG...

Page 16: ...i OPERATION MAINTENANCE MANUAL y W ILLUSTRATED PARTS LIST TACAN TEST SYSTEM _ RECORD OF REVISIONS ol REV ISSUE DATE BY REV ISSUE DATE BY NO DATE INSR NO DATE INSR...

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Page 18: ...9 10 thru 12 Blank 1 21 thru 24 Blank 29 thru 30 31 thru 32 33 thru 34 40 41 thru 44 Blank 45 thru 46 Blank Date Jun 30 89 Jun 30 89 Dec 15 89 Nov 16 87 Dec 15 89 Dec 15 89 Nov 16 87 Nov 16 87 Nov 16...

Page 19: ...thru 27 Nov 16 87 28 thru 29 Dec 15 89 30 Nov 16 87 31 thru 32 Blank Jun 30 89 2 2 2 1 thru 7 Nov 16 87 8 thru 9 Blank Dec 15 89 10 thru 13 Nov 16 87 14 Dec 15 89 2 2 3 1 Nov 16 87 2 thru 3 Jun 30 89...

Page 20: ...mulates all the parameters of a TACAN modulation signal necessary to test TACAN receiver transmitters It is designed to be used with an ATC 1400A The T 1401 can be operated as a bench top unit or it c...

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Page 22: ...2 1 1 Installation 1 2 1 1 A Safety Precaution 1 2 1 1 B Equipment Inspection 1 2 1 2 C Power Requirements 1 2 1 3 D Installation Equipment 1 2 1 3 E Installation Procedure 1 2 1 3 F Power Up Procedu...

Page 23: ...nd Table i Explanation of Command Codes Ron TVonrmv ooewvop r es w e ew e w ew 6 Error Codes Section 3 Specifications and Capabilities i 1 TACAN Test System Specifications A Mode Characteristics B Pow...

Page 24: ...Chart 1 2 4 13 T 1401 and ATC 1400A Front and Rear Panel Controls Connectors and Indicators Used in Inverse G A Test Operation 1 2 4 14 Inverse G A Test Function Hook up Diagram 1 2 4 15 Inverse G A...

Page 25: ...OPERATION MAINTENANCE MANUAL Li W ILLUSTRATED PARTS LIST TACAN TEST SYSTEM CHAPTER 1 LIST OF TABLES Chapter Section Title Subject Page 1 Initial Control Settings 1 2 3 2 1 Contents Page 4 Nov 16 87...

Page 26: ...e T 1401 weighs 17 5 pounds 7 95 kg and is 16 7 8 inches 42 86 cm wide 16 inches 40 64 cm deep less handles and 3 1 4 inches 8 25 cm high See figure 1 Removal of the op cover gives access to three PC...

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Page 30: ...must be observed during all phases of system installation and operation IFR Systems Inc assumes no Tlability for customer s failure to comply with any of the safety pre cautions outlined in this manua...

Page 31: ...d when performing any operations preceded by a CAUTION or WARNING label CAUTION labels appear where possibility of damage to equipment exists while WARNING notes are used to denote a condition where a...

Page 32: ...VOLTAGE Fl AC IN FUSE F2 AC OUT VOLTAGE 105 to 120 VAC 3 0A 250V Fast Blo 0 5A 250V Med Blo 220 to 250 VAC 3 0A 250V Fast Blo 0 25A 250V Med Blo Installation Equipment All electrical connections requi...

Page 33: ...installed in either Systems Inc test plastic feet install Installation Kit Rack Mount Bench Stack Mount CAUTION a bench top or rack mount fashion All IFR sets are normally shipped from factory with ed...

Page 34: ...able from T 1401 shipping con tainer and connect female end to POWER RECEPTACLE 32 on rear panel of T 1401 Connect 3 pin grounded plug on oppo site end of AC power cable to standard 3 pin grounded rec...

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Page 36: ...nnector J10003 J10011 MRB SYNC Connector 17 LOAD RATE Pushbutton 29 EXT Connector 310004 43 ARB LENGTH Switch 135 Hz SYNC Connector 18 CLEAR RATE Pushbutton 30 AUX Connector J10002 44 TRIGGER INPUT Co...

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Page 38: ...lays either bearing or reply delay based upon the position of this switch BEARING RATE Thumbwheels Desired value of bearing and bearing rate is set in degrees for bearing and degrees per second for be...

Page 39: ...pulse pair is output at this connector INV TACAN SYNC Connector J15010 A positive going North Reference Trigger pulse is output at this connector The 15 Hz bearing in INV Mode is determined by the tim...

Page 40: ...egrees per second as selected on the BEARING RATE Thumbwheels 6 NOTE The Delta F and Bearing Rate functions are mutually exclusive Selecting a Bearing Rate in the presence of a non zero Delta F will r...

Page 41: ...VEL Adjust R21013 Calibration adjustment for the level of the 135 Hz component of the composite modulation output voltage 15 Hz LEVEL Adjust R21012 Calibration adjustment for the level of the 15 Hz co...

Page 42: ...plying either 115 VAC or 230 VAC single phase power to the T 1401 LINE SELECT Switch 35 must be set to the correct position before applying power LINE SELECT Switch Selects the line voltage that will...

Page 43: ...Reference bursts when active ARB LENGTH Switch Controls the number of pulse pairs in G A X mode or single pulses in G A Y Mode in the Auxiliary Reference Burst One or two pulse pairs single pulses ma...

Page 44: ...manual Any other equipment meeting the specifications listed in the appendix may be substituted for the recommended models NOTE For certain procedures in this manual the equipment listed in Appendix B...

Page 45: ...s 22 00 15 Hz MODULATION Thumbwheels 23 00 MRB LENGTH Switch 43 Fig 14 NOM Chapter 1 Section 2 ARB LENGTH Switch 41 NOM MISSING ARB Switch 39 NORM ATC 1400A Initial Control Settings Table 1 T 1401 Per...

Page 46: ...trol 1 to A A Oscilloscope shall indicate 0 00 volts Set TACAN Control 1 to INV A A Oscilloscope shall indicate 0 00 volts Set TACAN Control 1 to G A Connect oscilloscope channel A to 135 Hz SYNC Conn...

Page 47: ...00 Connect oscilloscope channel A to MRB SYNC Connector 9 Remove the cable interconnecting T 1401 AUXILIARY Connector 30 and ATC 1400A J6 Connect oscilloscope channel B to AUXILIARY Connector 30 pin...

Page 48: ...eels 21 to 1000 Oscilloscope shall indicate no A A interrogations on channel B Set TACAN Control 1 to A A Set REFERENCE DEV MRB Thumbwheels 7 to 0 0 OFF Oscilloscope shall indicate A A SYNC signals ev...

Page 49: ...nel A to AUXILIARY Connector 30 pin 5 Connect oscilloscope channel B to AUXILIARY Connector 30 pin 7 Connect oscilloscope external trigger input to MRB SYNC Con nector 9 Set TACAN Control 1 to G A Osc...

Page 50: ...s listed below Paragraph Test Function Page No 2 4 A Ground to Air G A Test Function 2 2 4 B Inverse Ground to Air G A Test 14 Function 2 4 C Air to Air A A Test Function 26 2 4 D Inverse Air to Air A...

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Page 52: ...G A Test Function is described in Paragraph 2 4 A 2 In the G A Test Mode which is the primary mode o2f operation the T 1401 provides the 15 Hz Modulation 135 Hz Modulation Main Reference Bursts and Au...

Page 53: ...ts an error condition or the operator has selected an incompatible parameter value an appropriate message will be displayed in place of the current value until the problem is resolved Refer to Section...

Page 54: ...ing edge occurs immediately prior to the Tirst pulse of the Main Reference Burst is out put at this connector 135 HZ SYNC Connector A negative going oscilloscope sync pulse whose leading edge occurs a...

Page 55: ...single pulses that make up the Auxiliary Reference Burst Adjustment is from 3 9 HS to 3 9 US from the nominal value NOMINAL SETTING 0 0 Position LOAD RATE Pushbutton Programs a bearing rate from 39 0...

Page 56: ...is connected to the AC OUT 33 convenience outlet on the rear of the T 1401 COMP MOD Connector 15 135 Hz Composite modulation output from the T 1401 to the ATC 1400A x Oo 0 Input for external frequency...

Page 57: ...the AC OUT Connector Refer to Paragraph 1 2 1C for appropriate rating 37 JER BUS Connector Connects the T 1401 to the ATC 1400A so that information may be exchanged between the two units 41 M ARB Swi...

Page 58: ...Switch DME CAL Position P2 pulse remains in nominal position DME DEV P2 CAL Thumbwheels 47 have no effect on deviating Po pulses NOMINAL SETTING CAL Position PRF SQTR ON OFF Switch Two position toggle...

Page 59: ...rated at a mean squitter rate as selected by thumbwheel setting NOMINAL SETTING 2700 Hz Position AS FREQ FUNCTION SELECT Thumbwheels Select function of operation and frequency of test set Numbers in M...

Page 60: ...d on thumbwheel switches in microseconds NOTE Controls P2 pulse deviation for the reference burst as well as squitter and range replies AF _Thumbwheels Deviates generator frequency from 9 99 MHz to 9...

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Page 63: ...FREQ FUNCTION SELECT Thumbwheels 28 COMP MOD Connector 35 LINE Switch Thumbwheels 7 REFERENCE DEV MRB 29 g10003 t 31004 37 TACAN ON OFF Switch 47 DME P2 DEV Thumbwheels umbwheels onnector 39 DME REPL...

Page 64: ...Function is described in Paragraph 2 4 B 2 In the Inverse G A Test Mode the Airborne TACAN Beacon is equipped with a rotating antenna to provide both bearing and distance information The DME reply in...

Page 65: ...inal value in 0 1 steps NOMINAL SETTING 0 0 Position BEARING REPLY DELAY Display Normally displays the currently simulated bearing or reply delay output If the T 1401 detects an error condition or the...

Page 66: ...cilloscope sync pulse whose leading edge occurs at the positive going zero crossing of the 15 Hz modulation signal is out put at this connector 15 HZ MOD Connector A sample of the 15 Hz modulation sig...

Page 67: ...ring from 000 0 degrees to 359 9 degrees as selected on the BEARING RATE Thumbwheels 6 15 135 6B SHIFT Thumbwheels Programs the phase shift between the 15 Hz and 135 Hz modulating signals from 39 degr...

Page 68: ...Fuses the power to the AC OUT connector Refer to Paragraph 1 2 1C for appropriate rating 33 OUT Co ct Convenience outlet normally used to power the ATC 1400A 34 nector Power receptacle for applying e...

Page 69: ...0A so that information may be exchanged between the two units 45 MRB LENGTH Switch Controls the number of pulse pairs in G A X mode or single pulses in G A Y mode A A X mode and A A Y mode in the Main...

Page 70: ...tion 35 LINE Switch Applies external AC Power to ATC 1400A Test Set 36 IDENT TONE OFF CODE Switch DME OFF Position Inhibits both continuous and code tones NOMINAL SETTING OFF Position 37 TACAN ON OFF...

Page 71: ...isted as follows WINDOW OPE RATION RANGE THUMBWHEEL DI SPLAY FUNCTION RANGE XPOR TRAN SP ONDER 962 MHz 1213 MHz 0962 1213 TAC Y DME Y Ch Channel 1 Channel 126 0001 0126 TAC X DME X Ch Channel 1 Channe...

Page 72: ...ESCRIPTION 48 AF Thumbwheels Deviates generator frequency from 9 99 MHz to 9 99 MHz Frequency range is increased from 952 01 MHz to 1222 99 MHz The AF switch has no effect on X or Y channel selection...

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Page 74: ...TACAN TEST SYSTEM Sv CROSSING pont NEGATIVE GOING ZERO oe i i 18S a i 28yS INVTACAN SYNC J15010 BEARING 180 0 DEC LT NOTE ALL TIMING IS REFERENCED TO FALLING EDGE OF PULSES 15Hz MOD J15004 15 Hz SYNC...

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Page 76: ...2 In the A A Test Mode the bearing information consists only of 15 Hz modulation and Main Reference Bursts MRB The MRB consists of 10 signal pulses spaced at 30 HS apart in both X and Y Modes Range re...

Page 77: ...SETTING 0 0 Position 4 8B G REPLY i a Normally displays the currently simulated bearing or reply delay output If the T 1401 detects an error condition or the operator has selected an incompatible par...

Page 78: ...ng oscilloscope syne pulse whose leading edge occurs immediately prior to the first pulse of the Main Reference Burst is out put at this connector 11 A A INTERR SYNC Connector A negative going oscillo...

Page 79: ...hbutton tt eS Programs a bearing from 000 0 degrees to 359 9 degrees as selected on the BEARING RATE Thumbwheels 6 A A INTERR Thumbwheels Programs an A A interrogation rate from 0000 interrogations pe...

Page 80: ...nterconnect 31 A A RATE SELECT Switch Selects between Random and Fixed Rate interrogations This selection is not GPIB controlled 32 US Fuses power to the AC OUT connector Refer to Paragraph 1 2 1C for...

Page 81: ...A X mode A A Y mode in the Main Reference Burst One or two pulse pairs Single pulses may be added or subtracted from the nominal value ATC 1400A Description of Controls Connectors and Indicators Used...

Page 82: ...36 US for A A Y Mode Selection of any position of this control selects ATC 1400A reply efficiency rate i e SO position equals 50 reply rate and 100 position equals 100 reply rate NOMINAL SETTING 70 P...

Page 83: ...liary and OFF is displayed in the T 1401 BEARING Display 4 NOTE A A RF Frequency pairs always use Y Mode pair EXAMPLE Channel 0001X uses channel O001Y frequency pair but pulse spacing remains the same...

Page 84: ...A A INTERR PULSE J10002 10 A A INTERR PRIORITY J10002 7 REF IDENT PRIORITY J19002 7 MRB REF IDENT PULSE J10002 5 bone T4ps 15 Hz SYNC J15008 F t J4 4 y a rr 7 ape KO e n INVIACAN SYNC J15010 O 5pS WI...

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Page 86: ...A A Test Mode the Airborne TACAN Beacon may determine the bearing to an airborne TACAN receiver transmittter In this case a single pulse squitter generates timing between the negative going zero cross...

Page 87: ...ng rate SELECTION RANGE THUMBWHEEL SETTING Bearing 000 0 to 359 9 0000 to 3599 Bearing Rate 39 0 to 39 0 39X to 39X A A_INTERR SYNC Connector A negative going oscilloscope sync pulse whose leading edg...

Page 88: ...nd CLEAR BRG Pushbutton Clears the previously loaded bearing information to 000 0 degrees LOAD BRG Pushbutton Programs a bearing from 000 0 degrees to 359 3 degrees as selected on the BEARING RATE Thu...

Page 89: ...ch Selects between Random and Fixed Rate interrogations This selection is not GPIB controlled F2 Fuse Fuses the power to the AC OUT Connector Refer to Paragraph 1 2 1C for appropriate rating AC OUT Co...

Page 90: ...ulses NOMINAL SETTING CAL Position PRF SQTR ON OFF Switch Two position toggle switch which when placed in OFF position will inhibit squitter LINE Switch Applies external AC Power to ATC 1400A Test Set...

Page 91: ...ON RAN GE XPDR TRANSPONDER 962 MHz 1213 MHz 0962 1213 TAC Y DME Y Ch Channel 1 Channel 126 0001 0126 TAC X DME X Ch Channel 1 Channel 126 0001 0126 5 VOR PAIR DME Y Ch 108 05 MHz 117 95 MHz 1080 1179...

Page 92: ...nterroga tion pulse pairs NOMINAL SETTING 0 0 Position AF Thumbwheels Deviates generator frequency from 9 99 MHz to 49 99 MHz Frequency range is increased from 952 01 MHz to 1222 99 MHz The AF switch...

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Page 94: ..._ A CROSSING pont NEGATIV E GOING ZERO e t 15 Hz SYNC J15008 1 KA INTERR uu L L UU T A A INTERR PRIORITY J10002 7 t O l INVTACAN SYNC J15010 T t Lun an 7OpS 1 A A INTERR SYNC 315009 P To B PU SE SPACI...

Page 95: ...OGRE NE OF abeg b 2 1 ANV1a 1g ATYWNOLTLNGLNI F9Vd STHL WALSAS LSAL NVOVL YM J IST SLY d OILVYLSNTIL M TWANVH JONVNSLNIVH NOLLVY RdO...

Page 96: ...ngs via the ATC 1400A GPIB hardware That is the T 1401 does not have the actual GPIB bus hardware and relies on the ATC 1400A to do the job T 1401 GPIB commands are passed to the ATC 1400A which in tu...

Page 97: ...GPIB talker These commands usually occur when the GPIB bus requests in hardware special functions Device clear and go to local DCL and GTL commands are examples of such requests GPIB ASCII Command Sy...

Page 98: ...ed with the delimiter in the order requested If a syntax error occurred in the received GPIB command string the T 1401 will place in the buffer After data is placed in this buffer a flag is set to ind...

Page 99: ...to omit the colon terminator after or commands These commands are assumed to be complete by the interpreter and will be processed accordingly An example is illustrated as follows Valid transmit reques...

Page 100: ...ta that not enclosed in parentheses is output data and a dash is used for commands having no input output data 4 A brief description of the commands are listed under the instruction column COMMAND DAT...

Page 101: ...A TACAN Mode INVAA Select Inverse A A TACAN Mode M X X Set MRB deviation 3 9 to 3 9 Mo Turn Main Reference Bursts OFF M1 Turn Main Reference Bursts ON MDP X Set MRB delta pulse 2 to 2 MOD15 XX Set per...

Page 102: ...Air to Air interrogations to be fixed at XXXX PRF DATA LIST DEFINITION A maximum of four digits are output to the T 1401 with a range of 0 to 3999 PRF EXAMPLE ASCII character string AX1 AAI 2525 instr...

Page 103: ...A X X INSTRUCTION FORMAT ASCII command A Data list X X COMMAND DEFINITION Instructs the T 1401 to set Auxiliary Reference Bursts reference deviation setting to X X microseconds This command works in c...

Page 104: ...E ASCII character string AX1 A1 turns on the Auxiliary Reference bursts ERROR CONDITION N A ERROR CONDITION RESPONSE N A www ee nen n nen n es COMMAND ADP X INSTRUCTION FORMAT ASCII command ADP Data l...

Page 105: ...list None COMMAND DEFINITION Removes the first Aux Reference Burst after the Main Reference Burst DATA LIST DEFINITION No input output data EXAMPLE AX1 AMISS1 ERROR CONDITION N A ERROR CONDITION RESPO...

Page 106: ...1401 is in Delta Freq mode prior to the BR XX command the unit will leave Delta Freq mode and enter speed mode Speed mode can be stopped by programming the bearing rate to zero degrees sec DATA LIST...

Page 107: ...F 0 then the unit will leave the Delta Freq mode thus clearing any previously stored data EXAMPLE ASCII character string AX1 DF 1 0 instructs the T 1401 t select Delta Freq and alter the 15 Hz and 135...

Page 108: ...GA sets the T 1401 in Ground to Air TACAN mode ERROR CONDITION N A ERROR CONDITION RESPONSE N A anne ne eee ween COMMAND INVGA INSTRUCTION FORMAT ASCII command INVGA Data list None COMMAND DEFINITION...

Page 109: ...SPONSE N A o ne een eee COMMAND M X X INSTRUCTION FORMAT ASCII command M Data list X X COMMAND DEFINITION Instructs the T 1401 to set the Main Reference Bursts reference deviation setting to X X Micro...

Page 110: ...E ASCII character string AXl MO turns off the Main Reference Bursts ERROR CONDITION N A ERROR CONDITION RESPONSE N A COMMAND M1 INSTRUCTION FORMAT ASCII command M1 Data list None COMMAND DEFINITION In...

Page 111: ...ursts ERROR CONDITION Data value out or range ERROR CONDITION RESPONSE Defaults to zero COMMAND MOD15 XX INSTRUCTION FORMAT ASCII command MOD15 Data list XX COMMAND DEFINITION Instructs T 1401 to modi...

Page 112: ...35 _or AX1 MOD135 will turn the 135 Hz component signal OFF ERROR CONDITION Data value out of range ERROR CONDITION RESPONSE Value defaults to maximum wenn ene n eee COMMAND PH XX INSTRUCTION FORMAT A...

Page 113: ...bearing ERROR CONDITION N A ERROR CONDITION RESPONSE N A y COMMAND DISPRD INSTRUCTION FORMAT ASCII command DISPRD Data list None COMMAND DEFINITION Instructs the T 1401 to display measured reply delay...

Page 114: ...ut from the T 1401 in response to the RD command consists of up to five ASCII characters including the decimal point with a range of 0 1 to 89 9 yws EXAMPLE ASCII character string AX1 RD instructs the...

Page 115: ...OPERATION MAINTENANCE MANUAL Mh W ILLUSTRATED PARTS LIST TACAN TEST SYSTEM THIS PAGE INTENTIONALLY LEFT BLANK 1 2 5 Page 20 Dec 15 89...

Page 116: ...y deviation during a non zero bearing rate EC03 Bearing rate mode invalid The operator has selected non zero bearing rate during a non zero frequency deviation The following error code EC04 may occur...

Page 117: ...OPERATION MAINTENANCE MANUAL Mh W ILLUSTRATED PARTS LIST 4 TACAN TEST SYSTEM THIS PAGE INTENTIONALLY LEFT BLANK 1 2 6 Page 2 Dec 15 89...

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