Viavi IFR 4000 User manual

T.O. 33K3-4-3457-1
30 APRIL 2006
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.
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T.O. 33K3-4-3457-1
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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;
Marker Beacon:
72 to 78 MHz;
Comm VHF AM:
117 to 157 MHz;
G/S:
327 to 337 MHz;
Comm VHF FM:
155 to 175 MHz;
Comm UHF:
224 to 401 MHz;
SELCAL:
117 to 157 MHz
Accuracy: time base
±1 ppm when Autocal is performed
Output Level Measured with a
Power Meter, Power
ANT Connector Sensor and Microwave
Measurement System
Single Carrier Range: -67 to +13 dBm
Accuracy: ±3 dB
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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;
-94.5 to -40 dBm, ±2 dB;
-39.5 to -12 dBm, ±2.5 dB
Spectral Purity Measured with a
Spectrum Analyzer
Harmonics Range: 72 to 401 MHz
Accuracy: <-20 dBc
Non-Harmonics Range: 75 to 400 MHz
Accuracy: <-35 dBc
VOR Mode Measured with ILS/VOR
Signal Calibrator,
Tone Frequency Range: 30 Hz Ref, 30 Hz Var, Universal Counter and
1020 and 9960 Hz Audio Analyzer
Accuracy: ±0.02% of setting
AM Modulation Range: 30%,
30, 1020 and 9960 Hz;
10%, 1020 Hz Morse Code
Accuracy: In CAL position:
Modulation: ±2% AM;
Distortion: <2.5% THD *1
FM Modulation Range: 30 Hz Ref @ ±480 Hz
Peak Deviation on 9960 Hz sub-carrier
Accuracy: ±25 Hz peak deviation
See footnote at end of Table.
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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:
20% AM, 90 and 150 Hz;
30% AM, 1020 audio tone;
10% AM, 1020 Morse Code
Accuracy: In CAL position:
Modulation: ±2% AM;
Distortion: <2.5% THD
DDM
Fixed Range: ±0, 0.093, 0.155 or
0.200 DDM and Tone Delete
Accuracy: ≤+10 dBm output level,
±(0.0015 DDM +3% of setting)
Variable Range: ±0.4 DDM
Accuracy: ≤+10 dBm output level,
±(0.0025 DDM +3% of setting)
G/S Mode
Tone Frequency Range: 90 and 150 Hz
Accuracy: ±0.02% of setting
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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
DDM
Fixed Range: ±0, 0.091, 0.175 or
0.400 DDM and Tone Delete
Accuracy: ≤+10 dBm output level,
±(0.003 DDM + 3% of setting)
Variable Range: ±0.8 DDM
Accuracy: ≤+10 dBm output level,
±(0.0048 DDM + 3% of setting)
Marker Mode
Tone Frequency Range: 400, 1300 and 3000 Hz
Accuracy: ±0.02% of setting
Modulation Range: 95% AM;
400, 1300 and 3000 Hz
Accuracy: In CAL position:
Modulation: ±5% AM;
Distortion: <2.5% THD, single carrier
COMM Mode
Tone Frequency Range: 1020 Hz
Accuracy: ±0.02% of setting
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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
ANT and RF I/O input Range: 10 to 400 MHz; Output calibration
Connectors Resolution: 100 Hz
Accuracy:
Same as time base, ±1 dig
AUX I/O Connector Range: 1 to 10 MHz;
Resolution: 1 Hz
Accuracy:
Same as time base, ±1 dig
Power Meter Range: *2118.0 to 400.0 MHz, Measured on TI with
0.1 to 300 W; known signal applied
Resolution:
0.1 to <1 W, 0.01 W;
1 to <100 W, 0.1 W;
100 to 300 W, 1 W
Accuracy: *3
CW only (w/o ext attenuator),
±(8% of rdg + 1 dig)
AM Meter Range: 50 to 3000 Hz,
10 to 99% mod
Accuracy: ±10% of rdg
FM Meter Range: 50 to 3000 Hz,
1 to 15 kHz dev
Accuracy: ±(0.4 kHz + 8% of rdg)
*1VOR Mode 1020 Hz Morse Code Distortion not calibrated due to instability of measurement.
*2On/Off Duty Cycle: ≤10 W Continuous; >10 to ≤20 W On, max of 3 min, Off, min of 2 min;
>20 to ≤30 W On, max of 1 min, Off, min of 2 min.
*3External Attenuator required for input power >30 W.
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2 EQUIPMENT REQUIREMENTS:
Minimum Use Calibration Sub-
Noun Specifications Equipment Item
2.1 FREQUENCY Range: 10 MHz Arbiter
STANDARD 1083B
Accuracy: <2.5 X 10-7
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
METER E4418B
Accuracy:
±1.2% of indication
2.4 POWER SENSOR Range: 75 to 335 MHz Agilent
E4412A
Accuracy: (all of Charted
Cal Factor)
±2.4% of charted Cal Factor
2.5 MICROWAVE Range: (Tuned RF Level) Hewlett-Packard
MEASUREMENT 75 to 335 MHz, 8902MS
SYSTEM -127 to +13 dB
Accuracy:
±(0.02 dB + 0.01 dB/10 dB + 1 digit)
0 to -80 dB;
±(0.02 dB + 0.02 dB/10 dB + 1 digit)
-80 to -110 dB;
±(0.02 dB + 0.05 dB/10 dB + 1 digit)
-110 to -127 dB
Range: (AM)
400 MHz,
30 to 90% AM,
1 kHz rate
Accuracy: ±2.5% of indication
Range: (FM)
165 MHz,
1 to 13 kHz deviation,
1 kHz rate
Accuracy: ±2.8% of indication
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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 8563E
Accuracy: (Scale Fidelity)
±1.6 dB
2.8 ILS/VOR SIGNAL Range: Rhode-Schwartz
CALIBRATOR CW Frequency: CIVS
75 to 335 MHz;
Audio Frequency:
29 to 9962 Hz
Bearing: 0.00 to 359.99°;
AM: 8 to 100% AM;
FM: ±505 Peak Deviation;
DDM: ±0.415 DDM;
Accuracy:
AM: ±0.5% AM;
Bearing: ≤0.025°;
FM: 6.25 Hz Peak Deviation;
DDM: ±0.001 DDM
2.9 POWER Range: 800 mW to 28 W, Microwave Products
AMPLIFIER 118 to 400 MHz SSPA0240-22/6140
Accuracy: N/A
2.10 COUPLER Range: 118 to 400 MHz Premier Microwave
SET 1852A
Accuracy: ±3% of charted
value *
2.11 POWER Range: 1 to 10 mW Hewlett-Packard
METER 432B-H05
Accuracy: ±1% of rdg *
See footnote at end of Table.
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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 Range: 0 to 100% Hewlett-Packard
ANALYZER 8903B
Accuracy: ±1 dB
* A worst case TAR of 2.7:1 is achieved by the RSS value of the Power Meter and the Coupler Set
for the calibration of the Power Meter Measurement.
3 PRELIMINARY OPERATIONS:
3.1 Review and become familiar with the entire procedure before beginning the Calibration Process.
WARNING
Unless otherwise designated, and prior to beginning the Calibration Process,
ensure that all test equipment voltage and/or current outputs are set to zero (0)
or turned off, where applicable. Ensure that all equipment switches are set to
the proper position before making connections or applying power.
3.2 Connect the test equipment to appropriate power source. Set all POWER switches to ON and allow warm-up
as required by the manufacturer.
3.3 Throughout the Calibration Procedure, all hard keys will be in all CAPS, soft keys will be underlined,
submenus will be in Bold, and menu values will be in Italics.
3.4 Connect the TI Power Cord to appropriate power source. Press TI POWER key to on. Allow a 15 min
warm-up period.
3.5 Press the TI SETUP key, as necessary to display the SETUP menu, and press H/W TOOLS, DIAGS, SELF
TEST and RUN to initiate Self Test. When complete, ensure all Self-Tests pass. Press RETURN 3 times.
3.6 Press the TI SETUP key, as necessary to display the SETUP menu, and press STORE/RECALL. Press PREV
or NEXT, as necessary, to select PRESET SETTINGS and then press RECALL. Press RETURN.
3.7 Throughout the Calibration Procedure, when required to enter a value, utilize the ↑, ↓, ←and →keys to enter
the value.
3.8 TO 33K3-4-3457-1 was written for boot sw ver 1.00, main sw ver 1.01, 1.03 and 1.04, fpga ver 1.0 and cpld
ver 1.0. If the TI has another boot sw, main sw, fpga or cpld version, contact the TCM at AFMETCAL.
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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.
4.1.3 Connect the TI ANT connector to the Universal Counter CHANNEL 1 input. Set the Universal Counter
50Ω/1MΩswitch to 50Ω.
4.1.4 Press the TI MODE key, as necessary, to display the VOR mode screen. Press TONE DEL, as necessary, to
set TONE DEL to REF&VAR. Press FREQ and set FREQ to 108.000 MHz.
4.1.5 Press the TI RF LVL key and set RF LVL to 0.0 dBm.
4.1.6 Adjust Universal Counter controls as required for a stable display indication. Verify the Universal Counter
indication is within the appropriate values listed in the Limits column of Table 2.
Table 2.
MODE Limits (Hz)
VOR 107999892.0 to 108000108.0
LOCALIZER 108099891.9 to 108100108.1
MARKER BEACON 74999925.0 to 75000075.0
COMM VHF AM 117999882.0 to 118000118.0
4.1.7 Press the TI MODE key, as necessary, to display the LOCALIZER mode screen. Press TONE DEL, as
necessary, to set TONE DEL to 90 & 150. Press FREQ and set FREQ to 108.100 MHz.
4.1.8 Repeat step 4.1.6.
4.1.9 Press the TI MODE key, as necessary, to display the MARKER BEACON mode screen. Press FREQ and set
FREQ to 75.00 MHz.
4.1.10 Repeat step 4.1.6.
4.1.11 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. Press FREQ and set FREQ to 118.0000 MHz. Press TONE, as
necessary, and set MOD TONE to OFF.
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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/1MΩswitch to 50Ω.
4.1.14 Press the TI MODE key, as necessary, to display the GLIDE SLOPE mode screen. Press TONE DEL, as
necessary, to set TONE DEL to 90 & 150. Press FREQ and set FREQ to 334.700 MHz.
4.1.15 Repeat step 4.1.6 using Table 3.
4.1.16 Press the TI MODE key, as necessary, to display the COMM UHF mode screen. Press SWITCH GEN/RX,
as necessary, to set to GENERATING. Press FREQ and set FREQ to 225.0000 MHz. Press TONE, as necessary,
and set MOD TONE to OFF.
4.1.17 Repeat step 4.1.6 using Table 3.
Table 3.
MODE Limits (Hz)
GLIDE SLOPE 334699665.3 to 334700334.7
COMM UHF 224999775.0 to 225000225.0
4.1.18 Press the TI RF LVL key and set RF LVL to -67.0 dBm. Disconnect the test setup.
4.2 RF SIGNAL GENERATOR OUTPUT LEVEL CALIBRATION:
4.2.1 Repeat step 3.6 to restore the TI factory presets.
4.2.2 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.
4.2.3 Press the TI MODE key, as necessary, to display the VOR mode screen. Press TONE DEL, as necessary, to
set TONE DEL to REF&VAR. Press FREQ and set FREQ to 108.000 MHz.
4.2.4 Standardize Power Meter (2.3) and Power Sensor. Set the Power Meter (2.3) controls for a dBm
measurement.
4.2.5 Connect the Power Sensor to the TI ANT connector.
4.2.6 Press the TI RF LVL key and set RF LVL to the first value listed in the Level column of Table 4.
4.2.7 Set the Power Meter (2.3) CAL FACTOR switch to the appropriate value for the frequency being verified.
4.2.8 Verify the Power Meter (2.3) indication is within the values listed in the Limits column of Table 4.
4.2.9 Press the TI RF LVL key and set RF LVL to -67.0 dBm.
4.2.10 Disconnect the Power Sensor from the TI ANT connector.
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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.
4.2.15 Ensure the Measuring Receiver indicates a stable power measurement. Press the Measuring Receiver Gold
Skey and TUNED RF LEVEL key. Press the CALIBRATE key and wait for a new indication.
NOTE
When the Measuring Receiver RECAL light illuminates, press the CALIBRATE
key and wait for a new indication.
NOTE
Do NOT press the Measuring Receiver Blue (shift) and SET REF keys. The TI
specifications are absolute levels.
4.2.16 Verify the Measuring Receiver indication is within the values listed in the Limits column of Table 4.
4.2.17 Press the TI RF LVL key and set RF LVL to the next value listed in the Level column of Table 4.
4.2.18 Verify the Measuring Receiver indication is within the values listed in the Limits column of Table 4.
4.2.19 Repeat steps 4.2.17 and 4.2.18 for the remaining corresponding values listed in Table 4.
4.2.20 Disconnect the Sensor Module from the TI ANT connector.
Table 4.
Level (dBm) Limits (dBm)
+13 10.0 to 16.0
0 -3.0 to +3.0
-10 -13.0 to -7.0
-20 -23.0 to -17.0
-30 -33.0 to -27.0
-40 -43.0 to -37.0
-50 -53.0 to -47.0
-60 -63.0 to -57.0
-67 -70.0 to -64.0
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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.
4.2.25 Disconnect the Sensor Module from the TI RF I/O connector.
4.2.26 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.
Table 5.
Level (dBm) Limits (dBm)
-12 -14.5 to -9.5
-20 -22.5 to -17.5
-30 -32.5 to -27.5
-40 -42.0 to -38.0
-50 -52.0 to -48.0
-60 -62.0 to -58.0
-70 -72.0 to -68.0
-80 -82.0 to -78.0
-90 -92.0 to -88.0
-100 -103.0 to -97.0
-110 -113.0 to -107.0
-120 -123.0 to -117.0
4.2.27 Press the TI MODE key, as necessary, to display the LOCALIZER mode screen. Press TONE DEL, as
necessary, to set TONE DEL to 90 & 150. Press FREQ and set FREQ to 108.100 MHz.
4.2.28 Repeat steps 4.2.5 through 4.2.26.
4.2.29 Press the TI MODE key, as necessary, to display the GLIDE SLOPE mode screen. Press TONE DEL, as
necessary, to set TONE DEL to 90 & 150. Press FREQ and set FREQ to 334.250 MHz.
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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. Press FREQ and set FREQ to 118.0000 MHz. Press TONE, as
necessary, and set MOD TONE to OFF.
4.2.34 Repeat steps 4.2.5 through 4.2.26.
4.2.35 Press the TI MODE key, as necessary, to display the COMM UHF mode screen. Press SWITCH GEN/RX,
as necessary, to set to GENERATING. Press FREQ and set FREQ to 225.0000 MHz. Press TONE, as necessary,
and set MOD TONE to OFF.
4.2.36 Repeat steps 4.2.5 through 4.2.26.
4.2.37 Disconnect the test setup.
4.3 RF SIGNAL GENERATOR SPECTRAL PURITY HARMONICS AND SPECTRAL PURITY NON-
HARMONICS CALIBRATION:
4.3.1 Repeat step 3.6 to restore the TI factory presets.
4.3.2 Connect the TI RF I/O connector to the Spectrum Analyzer INPUT 50 Ω.
4.3.3 Press the TI MODE key, as necessary, to display the VOR mode screen. Press TONE DEL, as necessary, to
set TONE DEL to REF&VAR. Press FREQ and set FREQ to 108.000 MHz.
4.3.4 Press the RF LVL key and set RF LVL to -12.0 dBm.
4.3.5 Set the Spectrum Analyzer controls to view the carrier. Set the Spectrum Analyzer controls to place the peak
of the carrier at a convenient reference level.
4.3.6 Set the Spectrum Analyzer controls as required to measure at least four harmonic signal levels.
4.3.7 Verify the amplitude of the Harmonic signals are within the first value listed in the Harmonics column of
Table 6.
4.3.8 Verify the amplitude of the Non-Harmonic signals are within the first value listed in the Non-Harmonics
column of Table 6.
Table 6.
Limits (dBc)
MODE Harmonics Non-Harmonics
VOR <-20 <-35
LOCALIZER <-20 <-35
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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 & 150. Press FREQ and set FREQ to 108.100 MHz.
4.3.10 Repeat steps 4.3.4 through 4.3.8.
4.3.11 Press the TI MODE key, as necessary, to display the GLIDE SLOPE mode screen. Press TONE DEL, as
necessary, to set TONE DEL to 90 & 150. Press FREQ and set FREQ to 334.250 MHz.
4.3.12 Repeat steps 4.3.4 through 4.3.8.
4.3.13 Press the TI MODE key, as necessary, to display the MARKER BEACON mode screen. Press FREQ and
set FREQ to 75.00 MHz.
4.3.14 Repeat steps 4.3.4 through 4.3.8.
4.3.15 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. Press FREQ and set FREQ to 118.0000 MHz. Press TONE, as
necessary, and set MOD TONE to OFF.
4.3.16 Repeat steps 4.3.4 through 4.3.8.
4.3.17 Press the TI MODE key, as necessary, to display the COMM UHF mode screen. Press SWITCH GEN/RX,
as necessary, to set to GENERATING. Press FREQ and set FREQ to 225.0000 MHz. Press TONE, as necessary,
and set MOD TONE to OFF.
4.3.18 Repeat steps 4.3.4 through 4.3.8.
4.3.19 Press the RF LVL key and set RF LVL to -130.0 dBm. Disconnect the test setup.
4.4 VOR MODE CALIBRATION:
4.4.1 Repeat step 3.6 to restore the TI factory presets.
4.4.2 Connect the TI RF I/O to the ILS/VOR Signal Calibrator 50 ΩInput connector.
4.4.3 Press the TI MODE, as necessary, for the VOR mode screen. Press the TI RF LVL and set RF LVL to
-20.0 dBm.
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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.
4.4.7 Verify the Universal Counter indication is within the values listed in the Frequency column of Table 7 for
9960 Hz Tone.
4.4.8 Verify the ILS/VOR Signal Calibrator indication is within the values listed in the AM Modulation column of
Table 7 for the 9960 Hz Tone.
4.4.9 Disconnect Universal Counter from the ILS/VOR Signal Calibrator AF output.
4.4.10 Connect the ILS/VOR Signal Calibrator AF output to the Audio Analyzer HI input for distortion
measurement.
4.4.11 Verify the Audio Analyzer indication is within the values listed in the Distortion column of Table 7 for the
9960 Hz Tone.
4.4.12 Disconnect Audio Analyzer from the ILS/VOR Signal Calibrator AF output.
4.4.13 Press the TI 9960 MOD and set 9960 Hz MOD to 0%. Press 30 MOD and set 30 Hz MOD to 30%. Repeat
steps 4.4.6 through 4.4.12 for the 30 Hz Tone.
4.4.14 Press the TI 30 MOD and set 30 Hz MOD to 0%. Press TONE, as necessary, to set MOD TONE to
1020 Hz. Repeat steps 4.4.6 through 4.4.12 for the 1020 Hz Tone.
4.4.15 Press the TI TONE, as necessary, to set MOD TONE to MORSE. Repeat steps 4.4.5 through 4.4.12, as
applicable, for the 1020 Hz Morse Code Tone.
Table 7.
Limits
Tone (Hz) Frequency (Hz) AM Modulation (%) Distortion (%)
9960 9958.008 to 9961.992 28 to 32 <2.5
30 29.994 to 30.006 28 to 32 <2.5
1020 1019.796 to 1020.204 28 to 32 <2.5
1020 Morse Code N/A 8 to 12 N/A
4.4.16 Press the TI TONE, as necessary, to set MOD TONE to OFF. Press 30 MOD and set 30 Hz MOD to
30%, then press 9960 MOD and set 9960 Hz MOD to 30%. Press the TONE DEL, as necessary, to set TONE
DEL to —.
4.4.17 On the ILS/VOR Signal Calibrator press DEMOD, AM Avion, VOR and DEV 9.96k.
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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.
4.4.22 Repeat steps 4.4.20 and 4.4.21 for the remaining corresponding values listed in Table 8.
Table 8.
Applied (°) Limits (°)
0.0 179.9 to 180.1
30 209.9 to 210.1
60 239.9 to 240.1
90 269.9 to 270.1
120 299.9 to 300.1
150 329.9 to 330.1
180 359.9 to 0.1
210 29.9 to 30.1
240 59.9 to 60.1
270 89.9 to 90.1
300 119.9 to 120.1
330 149.9 to 150.1
4.4.23 Leave test setup connected.
4.5 LOC MODE CALIBRATION:
4.5.1 Repeat step 3.6 to restore the TI factory presets.
4.5.2 Press the TI MODE, as necessary, for the LOCALIZER mode screen. Press the TI RF LVL and set RF LVL
to -20.0 dBm.
4.5.3 Press the TI TONE DEL, as necessary, to set TONE DEL to 150.
4.5.4 Set the ILS/VOR Signal Calibrator as a receiver for % AM modulation measurement.
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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.
4.5.8 Disconnect Universal Counter from the ILS/VOR Signal Calibrator AF output.
4.5.9 Connect the ILS/VOR Signal Calibrator AF output to the Audio Analyzer HI input for distortion
measurement.
4.5.10 Verify the Audio Analyzer indication is within the values listed in the Distortion column of Table 9 for the
90 Hz Tone.
4.4.11 Disconnect Audio Analyzer from the ILS/VOR Signal Calibrator AF output.
4.5.12 Press the TI TONE DEL, as necessary, to set TONE DEL to 90. Repeat steps 4.5.5 through 4.5.11 for the
150 Hz Tone.
4.5.13 Press the TI TONE DEL, as necessary, to set TONE DEL to 90&150, then press TONE, as necessary, to set
MOD TONE to 1020 Hz. Repeat steps 4.5.5 through 4.5.11 for the 1020 Hz Tone.
Table 9.
Limits
Tone (Hz) Frequency (Hz) AM Modulation (%) Distortion (%)
90 89.982 to 90.018 18 to 22 <2.5
150 149.970 to 150.030 18 to 22 <2.5
1020 1019.796 to 1020.204 28 to 32 <2.5
4.5.14 Press the TI TONE DEL, as necessary, to set TONE DEL to —, then press TONE, as necessary, to set
MOD TONE to OFF.
4.5.15 Set the ILS/VOR Signal Calibrator for a DDM measurement.
4.5.16 Press the TI DDM/μA LOC ←and →, as necessary, to select the first value listed in the Applied column in
Table 10.
4.5.17 Verify the ILS/VOR Signal Calibrator indication is within the values listed in the Limits column of
Table 10.
4.5.18 Repeat steps 4.5.16 and 4.5.17 for the remaining corresponding values listed in Table 10.
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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.
4.6 G/S MODE CALIBRATION:
4.6.1 Repeat step 3.6 to restore the TI factory presets.
4.6.2 Press the TI MODE, as necessary, for a the GLIDE SLOPE mode screen. Press the TI RF LVL and set RF
LVL to -20 dBm.
4.6.3 Press the TI TONE DEL, as necessary, to set TONE DEL to 150.
4.6.4 Set the ILS/VOR Signal Calibrator as a receiver for % AM modulation measurement.
4.6.5 Connect ILS/VOR Signal Calibrator AF output to the Universal Counter CHANNEL 1 input.
4.6.6 Verify the Universal Counter indication is within the values listed in the Frequency column of Table 11 for
90 Hz Tone.
4.6.7 Verify the ILS/VOR Signal Calibrator indication is within the values listed in the AM Modulation column of
Table 11 for the 90 Hz Tone.
4.6.8 Disconnect Universal Counter from the ILS/VOR Signal Calibrator AF output.
4.6.9 Connect the ILS/VOR Signal Calibrator AF output to the Audio Analyzer HI input for distortion
measurement.
4.6.10 Verify the Audio Analyzer indication is within the values listed in the Distortion column of Table 11 for the
90 Hz Tone.
4.6.11 Disconnect Audio Analyzer from the ILS/VOR Signal Calibrator AF output.
4.6.12 Press the TI TONE DEL, as necessary, to set TONE DEL to 90. Repeat steps 4.6.5 through 4.6.11 for the
150 Hz Tone.
18