Viavi IFR4000 Technical Manual
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Viavi IFR4000 Technical Manual

Calibration procedure for nav/comm test set
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T.O. 33K3-4-3457-1
TECHNICAL MANUAL
CALIBRATION PROCEDURE
FOR
NAV/COMM TEST SET
IFR4000
(IFR AMERICAS INC)
This publication replaces T.O. 33K3-4-3457-1 dated 30 March 2005 and all subsequent changes.
Distribution Statement C - Distribution authorized to U. S. Government agencies and their contractors for
official use or for administrative or operational purposes only, 30 March 2005. Requests for this
document shall be referred to 562 CBSG/MLLW, 813 Irving-Wick Dr W, Heath, OH 43056-1199.
Destruction Notice - For unclassified, limited documents, destroy by any method that will prevent
disclosure of the contents or reconstruction of the document.
Published under Authority of the Secretary of the Air Force
30 APRIL 2006

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  • Page 1 T.O. 33K3-4-3457-1 TECHNICAL MANUAL CALIBRATION PROCEDURE NAV/COMM TEST SET IFR4000 (IFR AMERICAS INC) This publication replaces T.O. 33K3-4-3457-1 dated 30 March 2005 and all subsequent changes. Distribution Statement C - Distribution authorized to U. S. Government agencies and their contractors for official use or for administrative or operational purposes only, 30 March 2005.

  • Page 2: List Of Effective Pages

    T.O. 33K3-4-3457-1 INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED PAGES. LIST OF EFFECTIVE PAGES NOTE: The portion of the text and illustrations affected by the changes is indicated by a vertical line in the outer margins of the page. Date of issue for original and changed pages are: Original......0 ......30 April 2006 TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 26, CONSISTING OF THE FOLLOWING: Page...
  • Page 3 T.O. 33K3-4-3457-1 NAV/COMM TEST SET IFR4000 (IFR AMERICAS INC) 1 CALIBRATION DESCRIPTION: Table 1. Test Instrument (TI) Performance Test Characteristics Specifications Method RF Signal Generator Output Frequency Range: Compared to a VOR: Frequency Standard 107 to 118 MHz; LOC: 107 to 113 MHz;...
  • Page 4 T.O. 33K3-4-3457-1 Table 1. (Cont.) Test Instrument (TI) Performance Test Characteristics Specifications Method RF Signal Generator (Cont.) Output Level (Cont.) Measured with a Power Meter, Power RF I/O Connector Sensor and Microwave Measurement System Single Carrier Range: -130 to -12 dBm Accuracy: -120 to -95 dBm, ±3 dB;...
  • Page 5 T.O. 33K3-4-3457-1 Table 1. (Cont.) Test Instrument (TI) Performance Test Characteristics Specifications Method VOR Mode (Cont.) Measured with ILS/VOR Signal Calibrator, Bearing Range: 0.0° to 359.9° Universal Counter and Audio Analyzer Accuracy: ±0.1° LOC Mode Tone Frequency Range: 90, 150 and 1020 Hz Accuracy: ±0.02% of setting Modulation Range:...
  • Page 6 T.O. 33K3-4-3457-1 Table 1. (Cont.) Test Instrument (TI) Performance Test Characteristics Specifications Method G/S Mode (Cont.) Measured with ILS/VOR Signal Calibrator, Universal Counter and Modulation Range: 40% AM; Audio Analyzer 90 and 150 Hz Accuracy: In CAL position: Modulation: ±2% AM; Distortion: <2.5% THD Range: ±0, 0.091, 0.175 or Fixed...
  • Page 7 T.O. 33K3-4-3457-1 Table 1. (Cont.) Test Instrument (TI) Performance Test Characteristics Specifications Method COMM Mode (Cont.) Measured with ILS/VOR Signal Calibrator, Modulation Range: 30% AM, 1020 Hz Universal Counter and Audio Analyzer Accuracy: In CAL position: Modulation: ±2% AM; Distortion: <2.5% THD Frequency Counter Verified during RF Signal Generator Frequency...

  • Page 8: Frequency Standard

    T.O. 33K3-4-3457-1 2 EQUIPMENT REQUIREMENTS: Minimum Use Calibration Sub- Noun Specifications Equipment Item 2.1 FREQUENCY Range: 10 MHz Arbiter STANDARD 1083B Accuracy: <2.5 X 10 2.2 UNIVERSAL Range: 29 Hz to 335 MHz Hewlett-Packard COUNTER 53132A OPT 124 Accuracy: ±0.005% of rdg 2.3 POWER Range: 10.0 to 16.0 dBm Agilent...

  • Page 9: Sensor Module

    T.O. 33K3-4-3457-1 Minimum Use Calibration Sub- Noun Specifications Equipment Item 2.6 SENSOR Range: 75 to 335 MHz, Hewlett-Packard MODULE 11722A Accuracy: (all % of Charted Cal Factor) 75 to 100 MHz, ±3.2%; 100 to 335 MHz, ±2.6% 2.7 SPECTRUM Range: 75 to 1.5 GHz, Hewlett-Packard ANALYZER 0 to 50 dB...

  • Page 10: Preliminary Operations

    T.O. 33K3-4-3457-1 Minimum Use Calibration Sub- Noun Specifications Equipment Item 2.12 SIGNAL Range: (CW) Hewlett-Packard GENERATOR 118 to 400 MHz, 8664A Opt H15 -5 to 0 dBm; (P/O E5504B) (AM) 30 to 90% modulation, 1 kHz rate; (FM) 1 to 13 kHz deviation, 1 kHz rate Accuracy: N/A 2.13 AUDIO...

  • Page 11: Calibration Process

    T.O. 33K3-4-3457-1 4 CALIBRATION PROCESS: NOTE Unless otherwise specified, verify the results of each test and take corrective action whenever the test requirement is not met, before proceeding. 4.1 RF SIGNAL GENERATOR OUTPUT FREQUENCY CALIBRATION: 4.1.1 Connect Frequency Standard 10 MHz REF OUT to the Universal Counter Ref In (rear panel). 4.1.2 Press the TI SETUP key, as necessary to display the SETUP menu, and press NEXT PARAM, as necessary, to select the PORT field and set to ANT.
  • Page 12 T.O. 33K3-4-3457-1 4.1.12 Repeat step 4.1.6. 4.1.13 Disconnect the TI ANT connector from the Universal Counter CHANNEL 1 input and connect the TI ANT connector to the Universal Counter CHANNEL 3 input. Set the Universal Counter 50Ω/1MΩ switch to 50Ω. 4.1.14 Press the TI MODE key, as necessary, to display the GLIDE SLOPE mode screen.
  • Page 13 T.O. 33K3-4-3457-1 4.2.11 Standardize the Measuring Receiver and Sensor Module. Ensure the Sensor Module calibration data is loaded in the Measuring Receiver. 4.2.12 Connect the Sensor Module to the TI ANT connector. 4.2.13 Set the Measuring Receiver controls for a power measurement in the dBm mode. 4.2.14 Press the TI RF LVL key and set RF LVL to the next value listed in the Level column of Table 4.
  • Page 14 T.O. 33K3-4-3457-1 4.2.21 Press the TI SETUP key and press NEXT PARAM, as necessary, to select the PORT field and set to RF I/O. Press the MODE key. 4.2.22 Connect the Sensor Module to the TI RF I/O connector. 4.2.23 Press the TI RF LVL key and set RF LVL to the first value listed in the Level column of Table 5. 4.2.24 Repeat steps 4.2.15 through 4.2.19 for the remaining corresponding values listed in Table 5.
  • Page 15 T.O. 33K3-4-3457-1 4.2.30 Repeat steps 4.2.5 through 4.2.26. 4.2.31 Press the TI MODE key, as necessary, to display the MARKER BEACON mode screen. Press FREQ and set FREQ to 75.00 MHz. 4.2.32 Repeat steps 4.2.5 through 4.2.26. 4.2.33 Press the TI MODE key, as necessary, to display the COMM VHF AM mode screen. Press SWITCH GEN/RX, as necessary, to set to GENERATING.

  • Page 16: Marker Beacon

    T.O. 33K3-4-3457-1 Table 6. (Cont.) Limits (dBc) MODE Harmonics Non-Harmonics GLIDE SLOPE <-20 <-35 MARKER BEACON <-20 <-35 COMM VHF AM <-20 <-35 COMM UHF <-20 <-35 4.3.9 Press the TI MODE key, as necessary, to display the LOCALIZER mode screen. Press TONE DEL, as necessary, to set TONE DEL to 90 &...
  • Page 17 T.O. 33K3-4-3457-1 4.4.4 Press the TI TONE DEL, as necessary, to set TONE DEL to —. Press 9960 MOD and set 9960 Hz MOD to 30%, set 30 Hz MOD to 0%. 4.4.5 Set the ILS/VOR Signal Calibrator as a receiver for % AM modulation measurement. 4.4.6 Connect ILS/VOR Signal Calibrator AF output to the Universal Counter CHANNEL 1 input.
  • Page 18 T.O. 33K3-4-3457-1 4.4.18 Verify the ILS/VOR Signal Calibrator indicates within 455 to 505 Hz p. 4.4.19 Set up the ILS/VOR Signal Calibrator as a receiver for VOR measurements. 4.4.20 Press the TI BRG and set BRG to the first value listed in the Applied column of Table 8. 4.4.21 Verify the ILS/VOR Signal Calibrator indicates within the appropriate values listed in the Limits column of Table 8.
  • Page 19 T.O. 33K3-4-3457-1 4.5.5 Connect ILS/VOR Signal Calibrator AF output to the Universal Counter CHANNEL 1 input. 4.5.6 Verify the Universal Counter indication is within the values listed in the Frequency column of Table 9 for 90 Hz Tone. 4.5.7 Verify the ILS/VOR Signal Calibrator indication is within the values listed in the AM Modulation column of Table 9 for the 90 Hz Tone.
  • Page 20 T.O. 33K3-4-3457-1 Table 10. Applied (DDM) Limits (DDM) 0.200 LEFT -0.2075 to -0.1925 0.155 LEFT -0.1612 to -0.1488 0.093 LEFT -0.0973 to -0.0887 0.000 CENTER -0.0015 to +0.0015 0.093 RIGHT 0.0887 to 0.0973 0.155 RIGHT 0.1488 to 0.1612 0.200 RIGHT 0.1925 to 0.2075 4.5.19 Leave test setup connected.
  • Page 21 T.O. 33K3-4-3457-1 Table 11. Limits Tone (Hz) Frequency (Hz) AM Modulation (%) Distortion (%) 89.982 to 90.018 38 to 42 <2.5 149.970 to 150.030 38 to 42 <2.5 4.6.13 Press the TI TONE DEL, as necessary, to set TONE DEL to —. 4.6.14 Set the ILS/VOR Signal Calibrator for a DDM measurement.
  • Page 22 T.O. 33K3-4-3457-1 4.7.4 Set the ILS/VOR Signal Calibrator as a receiver for % AM modulation measurement. 4.7.5 Connect ILS/VOR Signal Calibrator AF output to the Universal Counter CHANNEL 1 input. 4.7.6 Verify the Universal Counter indication is within the values listed in the Frequency column of Table 13 for 400 Hz Tone.

  • Page 23: Power Meter Calibration

    T.O. 33K3-4-3457-1 4.8.6 Verify the ILS/VOR Signal Calibrator modulation indication is within the appropriate values listed in the Limits column of Table 14 for the Function being verified. 4.8.7 Disconnect Universal Counter from the ILS/VOR Signal Calibrator AF output. 4.8.8 Connect the ILS/VOR Signal Calibrator AF output to the Audio Analyzer HI input for distortion measurement.

  • Page 24: Power Amplifier

    T.O. 33K3-4-3457-1 POWER AMPLIFIER RF IN RF OUT RF I/O DIRECTIONAL COUPLER * POWER SIGNAL GENERATOR METER (2.11) THERMISTOR MOUNT * RF OUTPUT INPUT * P/O Coupler Set. Figure 1. 4.9.5 Set the Power Meter (2.11) μW/mW switch to 40 dB COUPLER and the CORRECTION FACTOR switch to the proper position for frequency being generated.

  • Page 25: Am Meter Calibration

    T.O. 33K3-4-3457-1 4.9.11 Press the TI MODE, as necessary, for the COMM UHF mode screen. 4.9.12 Repeat steps 4.9.3 through 4.9.10 at 250 MHz. 4.9.13 Repeat steps 4.9.3 through 4.9.10 at 400 MHz. 4.9.14 Set the Signal Generator to minimum and disconnect test setup. 4.10 AM METER CALIBRATION: 4.10.1 Repeat step 3.6 to restore the TI factory presets.
  • Page 26 T.O. 33K3-4-3457-1 4.11 FM METER CALIBRATION: 4.11.1 Repeat step 3.6 to restore the TI factory presets. 4.11.2 Press the TI SETUP key, as necessary to display the SETUP menu, and press NEXT PARAM, as necessary, to select the PORT field and set to ANT. Press the TI MODE, as necessary, for a the COMM VHF FM mode screen.

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