TEL T-48 Operating And Maintenance Manual Download Page 1

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T-48/T-48A

MOD 3

50-400 HZ, SINGLE PHASE

120/220 VAC, 25 WATTS

120 VAC- 0.25 FTT, 220 VAC-0.125 FTT

T-48

MODE S/ATCRBS

TRANSPONDER RAMP

TEST SET

TEL-INSTRUMENT ELEC. CORP

TYPE                        WATTS
PART NO.
SERIAL NO.
     INPUT 115/230 VAC    50-400HZ
           CAGE CODE 92606 USA
MOD 1        2        3        4        5        6

TEST

INTERROGATE

ACCESSORIES

REPEAT

OFF

STORE

ANTENNA

LIGHTS

OFF

Transponder Test Set

Operating and Maintenance Manual

P/N-90000026

REVISION

Tel-Instrument Electronics Corp

728 Garden Street

Carlstadt, NJ 07072

(201) 933-1600

www.telinst.com

Leading the AVIONICS TEST industry into the 21

Century!

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

Summary of Contents for T-48

Page 1: ...5 230 VAC 50 400HZ CAGE CODE 92606 USA MOD 1 2 3 4 5 6 TEST INTERROGATE ACCESSORIES REPEAT OFF STORE ANTENNA LIGHTS OFF Transponder Test Set Operating and Maintenance Manual P N 90000026 REVISION Tel...

Page 2: ...ible by including the page figure table number and send the information to Tel Instrument Electronics Corp Attention Technical Publications We will make every effort to resolve the issue in a timely a...

Page 3: ...Revision A T 48 90 008 026 i T 48 MOD 3 TABLE OF CHANGES Date REV ECO Page Description 7 26 2002 A Initial Release...

Page 4: ...Regulatory Responsibilities 1 2 1 4 Warranty 1 2 1 5 Safety Considerations 1 3 Section B Equipment Description 1 6 Specifications 1 4 1 7 Abbreviations Acronyms and Glossary of Terms 1 5 II Preparatio...

Page 5: ...Automatic Sequence of Transponder Tests 2 11 2 11 2 Mode 3A C Manual Sequence of Transponder Tests 2 12 2 11 3 Mode S Automatic Sequence of Transponder Tests 2 13 2 11 4 Mode S Manual Sequence of Tes...

Page 6: ...eceiver Local Oscillator Test 4 6 4 3 5 Omni Directional Antenna Transponder Test 4 6 4 3 6 TAP 135 Antenna Coupler Test 4 7 4 3 7 TAP 141 Direct Connect Antenna 4 8 Section C Annual Calibration and A...

Page 7: ...nge to Digital 6 10 Cable Assembly Digital Range to RF 6 11 Cable Assembly LCD to Digital 6 12 Cable Assembly RF ANT Front Panel 6 13 TAP 135 Sub Assembly 6 14 TAP 141 Direct Connect Coupler Assembly...

Page 8: ...Panel Interconnect Diagram Schematic 5 4 5 4 RF PCB Assembly 5 Pages Total Schematic 5 5 5 5 Digital PCB Assembly 4 Pages Total Schematic 5 10 5 6 Digital Range PCB Assembly Schematic 5 14 6 1 T 48 Ca...

Page 9: ...Revision A T 48 90 008 026 vii List of Tables Table Title Page 2 1 T 48 MOD 3 Accessories 2 2 2 2 Controls Indicators and Connectors 2 3 2 3 Pulse Width and Spacing Criteria 2 21...

Page 10: ...2 3 4 5 6 TEST INTERROGATE ACCESSORIES REPEAT OFF STORE ANTENNA LIGHTS OFF Figure 1 1 T 48 T 48A MOD 3 Transponder Ramp Test Set 1 2 Purpose and Function of the Equipment The T 48 T 48A MOD 3 Test Set...

Page 11: ...n Tel s judgment that it is thus defective This warranty does not include batteries NiCad batteries have a 90 day warranty This warranty does not extend to any of Tel products which have been subject...

Page 12: ...ies greatly improves the time it takes to complete the tests 4 Pay particular attention to NOTES and WARNINGS that may accompany some test procedures NOTE 5 Observe all standard safety procedures when...

Page 13: ...ty 15 dBm Transponder Tests Receiver Sensitivity Range 65 to 88 dBm accuracy 3 dB Radiated Power 40 57 dBm 2 dB 10 500 watts Frequency 5 MHz 100KHz Reply Efficiency 0 to 99 1 Measurements made utilizi...

Page 14: ...displayed when the transponder is determined to be a MODE S CW Continuous Wave D A Digital to Analog dB Decibel dBm Decibels above 1 milliwatt dc or DC Direct Current DME Distance Measuring Equipment...

Page 15: ...ansmissions made by a MODE S transponder not in reply to an interrogation for the use of the collision avoidance system Surveillance Altitude An interrogation that causes only the addressed MODE S tra...

Page 16: ...cation for shipping or extended storage Examine the unit for obvious signs of damage Check all displays switches and connectors before utilizing the Test Set If any damage is found DO NOT use the Test...

Page 17: ...mbly AC Line Cord 75010025 1 3 TAP 135 Antenna Coupler 10 ft 89000145 1 4 Direct Connect Coupler TAP 141 89000147 OPTIONAL 5 TSP 1A Omni Antenna 40030011 1 6 Foam Insert Case 31000007 1 8 Operators Ma...

Page 18: ...AC POWER Indicator Green LED indicates battery charging and AC power connected When the battery alone is being used the LED will not illuminate 5 VOLTAGE CHANGE FUSE CARTRIDGE Contains 2 250V amp remo...

Page 19: ...AC 0 125 FTT T 48 MODE S ATCRBS TRANSPONDER RAMP TEST SET TEL INSTRUMENT ELEC CORP TYPE WATTS PART NO SERIAL NO INPUT 115 230 VAC 50 400HZ CAGE CODE 92606 USA MOD 1 2 3 4 5 6 TEST INTERROGATE ACCESSOR...

Page 20: ...continue testing By observing a duty cycle of 50 the Test Set batteries will begin regaining their charge while testing is in progress It is strongly recommended that the batteries are charged for a...

Page 21: ...the T 48 Test Set This is useful to determine and troubleshoot problems by separating the aircraft antennas and cables from the rest of the system The TAP 141 also provides the means to accurately me...

Page 22: ...nsponder equipped ensure the correct antenna and transponder is selected 6 If unfavorable results occur when utilizing the Omni Antenna move closer to the transponder antenna and re test Aircraft exte...

Page 23: ...wer frequency sensitivity and diversity measurements 2 The TAP 141 supplies an attenuated path protecting the Test Set from the high RF power associated with transponders 1 Ensure power to the transpo...

Page 24: ...1 Transponder Test Sequence The T 48 is capable of testing ATCRBS Mode A Mode C and Mode S transponders The operator may select an Automatic sequence of tests ending in the Power Receiver Sensitivity...

Page 25: ...EST MODE S SURV SHORT TEST MODE S COMM IDENTITY TEST UNDESIRED REPLIES TEST MODE S COMM ALTITUDE TEST SQUITTER TEST DIVERISTY TEST MAX TRUE AIRSPEED TEST VERTICAL STATUS BIT TEST POWER RCVR FREQ TEST...

Page 26: ...he operator is alerted to continued and potential failures if testing is resumed Once the sequence is stopped due to a failure the operator may override and continue testing by depressing the INTERROG...

Page 27: ...RE REPEAT switch on the T 48 The MODE 3A test will commence and the display will indicate IDENT verifying the SPI pulse was received IDENT signal received The TEST switch must then be pushed once more...

Page 28: ...selecting the Automatic sequence of tests the results of the tests will not be displayed until the final test is completed At that point the POWER RCVR FREQ display will be shown and testing will end...

Page 29: ...nless a failure was detected Mode 3A test complete Display indicates the transponders 4096 Octal code 1234 and receiver efficiency 100 as a percentage To test the transponder IDENT function press the...

Page 30: ...MODE S transponder will not reply to an ATCRBS Only All Call A PASS displayed indicates that the Mode S transponder did not reply TEST button pressed to advance to next test MODE 3C ONLY test initial...

Page 31: ...Hexadecimal aircraft altitude and flight status is displayed TEST button pressed to advance to next test MODE S COMM A Identity test initialized The Test Set transmits a COMM A B ABCD transmission ut...

Page 32: ...Test Set will transmit no interrogations but receives and processes DF 11 and extended DF 17 replies After detection of the replies is received two alternating pages will be shown displaying the time...

Page 33: ...pressed to advance to next test The VERTICAL STATUS BIT test is not performed during the auto sequence of Mode S tests Test Set receives the Vertical Status as part of the UF 0 format A display of ONE...

Page 34: ...progressing The final test in the manual sequence will end with an alternating display of transponder RF power output 54dBm receiver sensitivity 75dBm and transponder frequency 1090 0 MHz The second...

Page 35: ...g between F1 and F2 and Pulse width of F2 DP Signifies a Data Pulse Failure F1 Pulse Width F1 F2 Spacing F2 Pulse Width A FAIL signifies a F1 F2 Width failure or a Framing Pulse Spacing Failure F1 out...

Page 36: ...Set also performs Framing Pulse Width and Data Pulse Tests With 1234 entered the T 48 will measure Framing Pulses their width and their spacing The Test Set will also measure each Data Pulse in their...

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