Aero-Flex NAV-402AP-3 User Manual

Ramp Test Set

NAV-402AP-3

Operation Manual

1002-0906-200

Issue-3

OPERATION MANUAL

RAMP TEST SET

NAV-402AP-3

PUBLISHED BY

Aeroflex

COPYRIGHT © Aeroflex 2004
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording or
otherwise without the prior permission of the publisher.

Original Printing Jul 2000

Issue-2 Oct 2001

Issue-3 Sep 2004

10200 West York / Wichita, Kansas 67215 U.S.A. / [phone] / FAX [phone]

OPERATION MANUAL
NAV-402AP-3

Nomenclature Statement:

In this manual Test Set or Unit refers to the NAV-402AP-3 Marker, G/S, VOR, COMM and Auto
Pilot Ramp and Bench Test Set.

Cable Statement:

For continued EMC compliance, all external cables must be 3 meters or less in length.

OPERATION MANUAL
NAV-402AP-3

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OPERATION MANUAL
NAV-402AP-3

SAFETY FIRST: TO ALL OPERATIONS PERSONNEL

REFER ALL SERVICING OF UNIT TO QUALIFIED TECHNICAL PERSONNEL. this unit contains no
operator serviceable parts.

WARNING: USING THIS EQUIPMENT IN A MANNER NOT SPECIFIED BY THE ACCOMPANYING

DOCUMENTATION MAY IMPAIR THE SAFETY PROTECTION PROVIDED BY THE EQUIPMENT.

CASE, COVER OR PANEL REMOVAL

Removing the Chassis Assembly from the Case Assembly exposes the operator to electrical hazards that
can result in electrical shock or equipment damage. Do not operate this Test Set with the Chassis Assembly
removed from the Case Assembly.

SAFETY IDENTIFICATION IN TECHNICAL MANUAL

This manual uses the following terms to draw attention to possible safety hazards, that may exist when
operating this equipment.

CAUTION: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN

EQUIPMENT OR PROPERTY DAMAGE (E.G., FIRE).

WARNING: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN

PERSONAL INJURY OR DEATH.

SAFETY SYMBOLS IN MANUALS AND ON UNITS

CAUTION: THIS SYMBOL REFERS TO SPECIFIC CAUTIONS REPRESENTED ON THE UNIT

AND CLARIFIED IN THE TEXT.

AC OR DC TERMINAL: TERMINAL THAT MAY SUPPLY OR BE SUPPLIED WITH AC OR DC
VOLTAGE.

DC TERMINAL: TERMINAL THAT MAY SUPPLY OR BE SUPPLIED WITH DC VOLTAGE.

AC TERMINAL: TERMINAL THAT MAY SUPPLY OR BE SUPPLIED WITH AC OR

ALTERNATING VOLTAGE.

SWITCH ON/OFF (PUSH-PUSH): POWER TO THE DEVICE IS CONNECTED ON OR
DISCONNECTED OFF.

EQUIPMENT GROUNDING PRECAUTION

Improper grounding of equipment can result in electrical shock.

USE OF PROBES

Check specifications for the maximum voltage, current and power ratings of any connector on the Test Set
before connecting it with a probe from a terminal device. Be sure the terminal device performs within these
specifications before using it for measurement, to prevent electrical shock or damage to the equipment.

POWER CORDS

Power cords must not be frayed, broken nor expose bare wiring when operating this equipment.

USE RECOMMENDED FUSES ONLY

Use only fuses specifically recommended for the equipment at the specified current and voltage ratings.

INTERNAL BATTERY

This unit contains a Sealed-Lead Battery, serviceable only by a qualified technician.

CAUTION: SIGNAL GENERATORS CAN BE A SOURCE OF ELECTROMAGNETIC INTERFERENCE (EMI) TO

COMMUNICATION RECEIVERS. SOME TRANSMITTED SIGNALS CAN CAUSE DISRUPTION
AND INTERFERENCE TO COMMUNICATION SERVICES OUT TO A DISTANCE OF SEVERAL
MILES. USERS OF THIS EQUIPMENT SHOULD SCRUTINIZE ANY OPERATION THAT RESULTS
IN RADIATION OF A SIGNAL (DIRECTLY OR INDIRECTLY) AND SHOULD TAKE NECESSARY
PRECAUTIONS TO AVOID POTENTIAL COMMUNICATION INTERFERENCE PROBLEMS.

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NAV-402AP-3

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OPERATION MANUAL
NAV-402AP-3

LIST OF EFFECTIVE PAGES

CHAPTER/SECTION/SUBJECT PAGE DATE

Title / Copyright Page Sep 1/04
Statements Sep 1/04
Safety Page Sep 1/04
List of Effective Pages 1 through 2 Sep 1/04
Table of Contents 1 through 2 Sep 1/04
Introduction 1 through 2 Sep 1/04
1-Table of Contents 1 through 2 Sep 1/04
1-List of Illustrations/Tables 1 through 2 Sep 1/04
1-1-1 1 through 2 Sep 1/04
1-2-1 1 through 4 Sep 1/04
1-2-2 1 through 8 Sep 1/04
1-2-3 1 through 12 Sep 1/04
1-3-1 1 through 10 Sep 1/04
1-4-1 1 through 2 Sep 1/04
1-5-1 1 through 2 Sep 1/04
Appendix A 1 through 2 Sep 1/04
Appendix B 1 through 2 Sep 1/04
Appendix C 1 through 2 Sep 1/04
Index 1 through 2 Sep 1/04

LIST OF EFFECTIVE PAGES

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OPERATION MANUAL
NAV-402AP-3

TABLE OF CONTENTS

Title Chapter/Section

Title / Copyright Page
Statements
Safety Page
List of Effective Pages
Table of Contents
Introduction

Chapter 1

Section 1 - Description 1-1
Section 2 - Operation 1-2
Section 3 - Specifications 1-3
Section 4 - Shipping 1-4
Section 5 - Storage 1-5

Appendix A - Table of I/O Connectors
Appendix B - Metric/British Imperial Conversion Table with Nautical Distance Conversions
Appendix C - Abbreviations

Index

TABLE OF CONTENTS

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OPERATION MANUAL
NAV-402AP-3

INTRODUCTION - NAV-402AP-3 TEST SET

This manual contains NAV-402AP-3 operating instructions for Marker, G/S, VOR, LOC, COMM and
Auto Pilot systems. It is strongly recommended that personnel be thoroughly familiar with the
contents of this manual before attempting to operate this equipment.

Refer all servicing of unit to qualified technical personnel.

ORGANIZATION

This manual is divided into the following Chapters and Sections:

CHAPTER 1 - OPERATION

Section 1 - DESCRIPTION (description of the NAV-402AP-3

Section 2 - OPERATION (installation; controls, connectors and indicators; and general

operating procedures)

Section 3 - SPECIFICATIONS

Section 4 - SHIPPING

Section 5 - STORAGE

INTRODUCTION

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INTRODUCTION

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OPERATION MANUAL
NAV-402AP-3

CHAPTER ONE

NAV-402AP-3 TEST SET

OPERATION MANUAL

TABLE OF CONTENTS

Title Chapter/Section/Subject Page

SECTION 1 – DESCRIPTION 1-1

1. General Description and Capabilities 1-1-1 1

1.1 Description 1-1-1 1

1.2 Functional Capabilities 1-1-1 1

SECTION 2 – OPERATION 1-2

1. Installation 1-2-1 1

1.1 General 1-2-1 1

1.2 Battery Operation 1-2-1 1

1.3 Battery Charging 1-2-1 1

1.4 Safety Precautions 1-2-1 1

1.4.1 Complying with Instructions 1-2-1 1

1.4.2 Grounding Power Cord 1-2-1 1

1.4.3 Operating Safety 1-2-1 1

1.4.4 CAUTION and WARNING Labels 1-2-1 1

1.5 AC Power Requirements 1-2-1 2

1.6 FCC Requirements 1-2-1 2

1.7 Battery Recharging 1-2-1 2

1.8 Bench Operation 1-2-1 3

1.9 External Cleaning 1-2-1 3

2. Controls, Connectors And Indicators 1-2-2 1

2.1 Front Panel 1-2-2 3

2.2 Rear Panel 1-2-2 8

3. General Operating Procedures 1-2-3 1

3.1 General 1-2-3 1

3.2 Signals Simulated 1-2-3 1

3.3 Operation CAUTIONS 1-2-3 1

3.4 Ramp Operation 1-2-3 1

3.5 Bench Operation 1-2-3 2

3.6 Counter Operation 1-2-3 2

3.7 Battery Parameters 1-2-3 2

3.8 Operate LOC and G/S Simultaneously 1-2-3 2

3.9 Marker Operation (Typical Control Settings) 1-2-3 3

3.10 VOR Operation (Typical Control Settings) 1-2-3 4

3.11 Localizer Operation (Typical Control Settings) 1-2-3 5

3.12 Glide Slope Operation (Typical Control Settings) 1-2-3 6

3.13 Communication Operation (Receiver Tests)
(Typical Control Settings) 1-2-3 7

3.14 Communication Operation (Transmitter Tests)
(Typical Control Settings) 1-2-3 8

TABLE OF CONTENTS

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OPERATION MANUAL
NAV-402AP-3

Title Chapter/Section/Subject Page

SECTION 3 – SPECIFICATIONS 1-3

1. NAV-402AP-3 Specifications 1-3-1 1

1.1 RF Output 1-3-1 1

1.2 Marker Mode 1-3-1 2

1.3 VOR Mode 1-3-1 3

1.4 LOC Mode 1-3-1 4

1.5 G/S Mode 1-3-1 5

1.6 COM Mode 1-3-1 6

1.7 External Frequency Counter 1-3-1 7

1.8 Power Meter 1-3-1 7

1.9 Battery Level Monitor 1-3-1 8

1.10 Bearing Monitor 1-3-1 8

1.11 Battery 1-3-1 8

1.12 AC Power 1-3-1 8

1.13 Environmental 1-3-1 8

SECTION 4 – SHIPPING 1-4

1. Shipping Test Sets 1-4-1 1

1.1 Information 1-4-1 1

1.2 Repacking Procedure 1-4-1 1

SECTION 5 – STORAGE 1-5

1. Storing Test Sets 1-5-1 1

TABLE OF CONTENTS

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OPERATION MANUAL
NAV-402AP-3

LIST OF ILLUSTRATIONS

Title Chapter/Section/Subject Page

Battery Recharging 1-2-1 3
NAV-402AP-3 Front and Rear Panels 1-2-2 1
Repacking Procedure 1-4-1 2

LIST OF TABLES

Title Chapter/Section/Subject Page

Specified Fuse Ratings 1-2-1 2
Correspondence Chart for Decibels, Volts and Watts 1-2-3 9
Correspondence Chart for 90 Hz and 150 Hz Tones (LOC) 1-2-3 12
Correspondence Chart for 90 Hz and 150 Hz Tones (G/S) 1-2-3 12
VOR Bearing Select Switches 1-3-1 9
90 Hz and 150 Hz Tones Variable Phase Relationships 1-3-1 10

LIST OF ILLUSTRATIONS/TABLES

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LIST OF ILLUSTRATIONS/TABLES

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OPERATION MANUAL
NAV-402AP-3

SECTION 1 - DESCRIPTION

1. GENERAL DESCRIPTION AND CAPABILITIES

1.1 DESCRIPTION

The NAV-402AP-3 is a Bench and Ramp Test
Set designed to meet the electronic
functional test requirements of Category I
and Category II ILS Systems, Communication
(COMM), Navigation (NAV) and Marker (MKR)
Systems.

The NAV-402AP-3 contains features to allow
testing of sophisticated autopilot systems.
These features include: automatic LOC DDM,
automatic sweep, two fixed VOR frequencies;
and two fixed, paired LOC and G/S
frequencies.

1.2 FUNCTIONAL CAPABILITIES

The NAV-402AP-3 has the following features
and capabilities:

O Signal Generator with a variable

attenuator which can be connected to the
equipment under test by a radiated signal
from a self-contained antenna or by a
coaxial cable. The signal generator can
be operated under either fixed frequency
control or in variable frequency mode in
each band.

O A built-in modulation meter measures

Signal Generator Percent of Modulation
on any frequency band from 0-30% or
0-100%. Front Panel controls permit
quick setting of modulation percentages.

90° bearing check monitor allows quick
verification of basic VOR bearing from the
VOR demod signal. NICAD battery and
built-in charging system permit completely
portable operation for up to 2 hours
continuous duty. Any time the Test Set is
plugged to an ac line, the battery is being
charged. In battery operation, an
automatic timer turns the Test Set off
after 6 to 10 minutes. The Test Set can
be recycled by pressing the PWR/BAT
Switch to the BAT position.

O The generator can be modulated

internally by a 1020 Hz Ident Tone,
Marker, VHF Omnidirectional Range
(VOR), Localizer (LOC) or Glide Slope
(G/S) Tones.

O A six-digit counter which indicates the RF

of the signal generator on any band, the
frequency of a COM Transmitter under
test, any external signal input from 1 MHz
to at least 300 MHz, or the VOR Bearing
selected by the Bearing Select Switches.

O A built-in RF power meter measures COM

Transmitter power, from 0-10W or
0-100W, either peak or average power by
selecting a switch position located on the
Front Panel. A COM Transmitter
demodulation output permits viewing or
listening to COM modulation.

1-1-1

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1-1-1

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OPERATION MANUAL
NAV-402AP-3

SECTION 2 - OPERATION

1. INSTALLATION

1.1 GENERAL

The Test Set is powered by an internal battery.
The Test Set contains a battery charging
circuit which enables the operator to recharge
the battery when connected to ac power.

NOTE: The Test Set can operate continuously

on ac power for servicing and/or
bench tests.

Refer to 1-2-2, Figure 2 for location of
controls, connectors or indicators.

1.2 BATTERY OPERATION

The internal battery (NICAD) is equipped to
power the Test Set for two hours of continuous
use, after which time, the Test Set battery
needs recharging.

The 0 to 30% scale displays battery voltage.
Normal battery charged condition is indicated
as 15 V or greater. Less than 12.5 V indicates
a discharged battery. An automatic low
voltage cutoff circuit turns the Test Set OFF
when the battery voltage drops under 12.5 V.

The Test Set contains an automatic time-out to
conserve power. An automatic timer turns the
Test Set OFF after 6 to10 minutes (only when
using battery power). The Test Set can be
recycled by pressing the PWR/BAT Switch to
the BAT position.

1.3 BATTERY CHARGING

The battery charger operates whenever ac
power is applied to the Test Set. The battery
should be charged every three months
(minimum).

NOTE: Overnight charging is recommended.

1.4 SAFETY PRECAUTIONS

The following safety precautions must be
observed during installation and operation.
Aeroflex assumes no liability for failure to
comply with any safety precaution outlined in
this manual.

1.4.1 Complying with Instructions

Installation/operating personnel should attempt
to install or operate the Test Set only after
reading and complying with instructions
contained in this manual. All procedures
contained in this manual must be performed in
exact sequence and manner described.

1.4.2 Grounding Power Cord

WARNING: USE OF A THREE-PRONG TO

TWO-PRONG ADAPTER PLUG
CREATES A SHOCK HAZARD
BETWEEN THE CHASSIS AND
ELECTRICAL GROUND.

For ac operation, the power cord, equipped
with standard three-prong plug, must be
connected to a properly grounded three-prong
receptacle.

It is the customer’s responsibility to:

O Have a qualified electrician check

receptacle(s) for proper grounding.

O Replace any standard two-prong

receptacle(s) with properly grounded three­prong receptacle(s).

1.4.3 Operating Safety

Due to potential for electrical shock within test
equipment, the Chassis Assembly must remain
installed in the Case Assembly. Battery
replacement must only be performed by
qualified service technicians.

1.4.4 CAUTION and WARNING Labels

Exercise extreme care when performing
operations preceded by a CAUTION or
WARNING label. CAUTION labels appear
where possibility of damage to equipment
exists. WARNING labels denote conditions
where bodily injury or death may result.

1-2-1

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OPERATION MANUAL
NAV-402AP-3

1.5 AC POWER

The Test Set operates over a voltage range of
100 to 120 VAC at 60 Hz or 220 to
240 VAC at 50 Hz according to VOLTAGE
SELECT Switch setting.

The specified fuse ratings are listed in
1-2-1, Table 1.

CAUTION: FOR CONTINUOUS

INPUT VOLTAGE F1 AND F2 FUSES

100 to 120 VAC 1.0 A, 250 V

220 to 240 VAC 0.5 A, 250 V

REQUIREMENTS

PROTECTION AGAINST FIRE,
REPLACE ONLY WITH FUSES
OF THE SPECIFIED VOLTAGE
AND CURRENT RATINGS.

Fast Blo (Type F)

(Aeroflex 5106-4501-000)

(1.2in AGC Glass)

Fast Blo (Type F)

(Aeroflex 5106-0000-016)

(1.2in AGC Glass)

1.7 BATTERY RECHARGING

Refer to 1-2-1, Figure 1.

STEP PROCEDURE

1. Verify FUSES are correct for normal
operating voltage. Refer to para 1-2-1.5.

2. Verify VOLTAGE SELECT Switch is set to
the setting (115 or 230 VAC) that
matches the input ac power.

3. Connect ac power cable between AC
Power Connector and normal operating
voltage power source, according to Test
Set configuration. Refer to para 1-2-1.5.

NOTE: The battery charger operates

whenever ac power is applied to
the Test Set.

4. Allow several hours for battery charge or
until 0 to 30% scale displays battery
voltage is 15 V or greater.

NOTE: Overnight charging is

recommended.

Specified Fuse Ratings

Table 1

1.6 FCC REQUIREMENTS

The Test Set is prohibited from use in VAR
(variable) frequency modes during ramp
use. Any test signals radiated from the
antenna must be fixed frequencies. The
Test Set is prohibited from externally
modulating any band during ramp use.
This includes microphones, audio
generators, etc.

1-2-1

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Sep 1/04

NAV TONE

OUT

DEMOD DEMOD

115

230

S

OPERATION MANUAL
NAV-402AP-3

PWR MONSIG GEN

F1

1.0A @ 110VAC

0.5A @ 220VAC
TYPE F

F2

AC IN CONNECTOR

Battery Recharging

Figure 1

1.8 BENCH OPERATION

STEP PROCEDURE

1. Verify FUSES are correct for normal
operating voltage. Refer to para 1-2-1.5.

2. Verify VOLTAGE SELECT Switch is set to
the setting (115 or 230 VAC) that
matches the input ac power.

3. Connect ac power cable between AC
Power Connector and normal operating
voltage power source according to Test
Set configuration. Refer to para 1-2-1.5.

4. Press PWR/BAT Switch to PWR position
and verify POWER ON Indicator
illuminates.

5. Connect UUT to Test Set.

00920004

1.9 EXTERNAL CLEANING

The following procedure contains routine
instructions for cleaning the outside of the Test
Set.

CAUTION: DISCONNECT POWER FROM

TEST SET TO AVOID POSSIBLE
DAMAGE TO ELECTRONIC
CIRCUITS.

STEP PROCEDURE

1. Clean front panel buttons and display
face with soft lint-free cloth. If dirt is
difficult to remove, dampen cloth with
water and a mild liquid detergent.

2. Remove grease, fungus and ground-in
dirt from surfaces with soft lint-free cloth
dampened with isopropyl alcohol.

3. Remove dust and dirt from connectors
with soft-bristled brush.

4. Cover unused connectors with suitable
dust covers to prevent tarnishing of
connector contacts.

5. Clean cables with soft lint-free cloth.

6. Paint exposed metal surface to avoid
corrosion.

1-2-1

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1-2-1

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OPERATION MANUAL
NAV-402AP-3

2. CONTROLS, CONNECTORS AND INDICATORS

1 2 3 4 5 6 7 8 9

32

31

30

29

MONITOR

0

2 0

4 0

1 0

0

0

.1

2

.5

1

TO

V
0
R

B
R
G

MASTER

MOD

CAL

PWR

S

AL

0

AR

BAT

S

6 0

2 0

4

FROM

100W
10W

8 0

100%

RF

30%

BAT

86

10

30%
100%
BRG

LOC
DDM

0

.093

0090

.155

.200

9.96 KHz
VAR

30

.150

~

~

20

10

10

30

0

DDM

.093

.155

.200

90

~

µ

A

20

0

30

.4

.4

DDM

LOC VAR

LOC FIXED

VOR VAR

VOR FIXED

MKR VAR

MKR FIXED

MOD IN

CTR IN

NAV - 402AP

MODE

G/S FIXED

G/S VAR

COM FIXED

COM 25 KHz

COM 8.33 KHz

.091

.175

.400

.90

~

1020

400

1300

3000

.8

G/S
DDM

FIXED

HI

LO

TUNE

0

.091

.175

.400

.150

~

0

.8

PEAK
LOC

AVG

XMTR

4

5

2

IN

28

27 26 25 24 23 22 21 20 19 18 17 16

33

34

35

6

OUTPUT

-dBm

10

GEN

VAR FREQ

HZ

KHZ

KHZ

MHZ

BRG

11

12

13

OUT

14

15

00920001

NAV TONE

SIG GEN

PWR MON

DEMOD

230

38

37

OUT DEMOD

115

S

36

NAV-402A-3 Front and Rear Panels

Figure 2

F1

1.0A @ 110VAC

0.5A @ 220VAC
TYPE F

F2

00920002

1-2-2

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Sep 1/04

OPERATION MANUAL
NAV-402AP-3

CONTROLS, CONNECTORS AND INDICATORS

IN NUMERIC ORDER

MONITOR Meter 1
MONITOR METER FUNCTION Switch 2
LOC DDM Control 3
DIGITAL Display 4
FREQUENCY MODE Switch 5
G/S DDM Control 6
CRYSTAL HI/LO Switch 7
COUNTER MODE Switch 8
METER BEARING CENTER Adjust 9
VAR FREQ Controls 10
TUNE Indicator 11
TUNE Control 12
OUTPUT ATTENUATOR Control 13
FINE TUNE Switch 14
RF OUT Connector 15
COM XMTR IN Connector 16
AVG/PEAK LOC XMTR ON Switch 17
90/150 Hz VAR PHASE (φ) Switch 18

G/S CENTER Adjust 19
G/S VAR DDM Control 20
TONE SELECT Switch 21
MOD IN/EXT FREQ CTR IN Connector 22
LOC CENTER Adjust 23
LOC VAR DDM/DDM SWEEP AMPLITUDE

Control 24

9.96 kHz REF LEVEL Control 25
30 Hz VAR LEVEL Control 26
LOC DDM SWEEP Switch 27
PWR/BAT Switch 28
MASTER MOD LEVEL Control 29
POWER ON Indicator 30
VOR BRG SELECT Switches 31
VOR BRG TO/FROM Switch 32
NAV TONE OUT Connector 33
SIG GEN DEMOD Connector 34
PWR MON DEMOD Connector 35
FUSES 36
VOLTAGE SELECT Switch 37
AC IN Connector 38

CONTROLS, CONNECTORS AND INDICATORS

IN ALPHABETICAL ORDER

30 Hz VAR LEVEL Control 26
90/150 Hz VAR PHASE (φ) Switch 18

9.96 kHz REF LEVEL Control 25
AC IN Connector 38
AVG/PEAK LOC XMTR ON Switch 17
COM XMTR IN Connector 16
COUNTER MODE Switch 8
CRYSTAL HI/LO Switch 7
DIGITAL Display 4
FINE TUNE Switch 14
FREQUENCY MODE Switch 5
FUSES 36
G/S CENTER Adjust 19
G/S DDM Control 6
G/S VAR DDM Control 20
LOC CENTER Adjust 23
LOC DDM Control 3
LOC DDM SWEEP Switch 27
LOC VAR DDM/DDM SWEEP AMPLITUDE

Control 24
MASTER MOD LEVEL Control 29
METER BEARING CENTER Adjust 9
MOD IN/EXT FREQ CTR IN Connector 22
MONITOR Meter 1
MONITOR METER FUNCTION Switch 2
NAV TONE OUT Connector 33
OUTPUT ATTENUATOR Control 13
POWER ON Indicator 30
PWR/BAT Switch 28
PWR MON DEMOD Connector 35
RF OUT Connector 15
SIG GEN DEMOD Connector 34
TONE SELECT Switch 21
TUNE Control 12
TUNE Indicator 11
VAR FREQ Controls 10
VOLTAGE SELECT Switch 37
VOR BRG SELECT Switches 31
VOR BRG TO/FROM Switch 32

1-2-2

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Sep 1/04

OPERATION MANUAL
NAV-402AP-3

2.1 FRONT PANEL

Refer to 1-2-2, Figure 2.

ITEM DESCRIPTION

1. MONITOR Meter

Provides, according to MONITOR METER
FUNCTION Switch selection, analog
indication of COM Transmitter RF power,
Signal Generator RF level, Battery
voltage, percent modulation of Signal
Generator or VOR bearing errors at 90°.

2. MONITOR METER FUNCTION Switch

Selects MONITOR Meter function:

O 10W selects 0 to 10 Watt scale

(bottom scale) to measure COM
Transmitter RF power.

O 100W selects 0 to 100 Watt scale

(bottom scale X 10) to measure COM
Transmitter RF power.

O RF indicates best Signal Generator

RF level by adjusting TUNE Control
with FINE TUNE Switch pressed to
set MONITOR Meter to center scale.

O BAT selects 0 to 30% scale in volts

to indicate internal Battery voltage.
A ≥15 V reading indicates a fully
charged Battery. A <12 V reading
indicates a discharged Battery.

O 30% selects 0 to 30% scale to

measure modulation level of Signal
Generator.

O 100% selects 0 to 100% scale to

measure modulation level of Signal
Generator.

O BRG checks VOR Generator at 90° .

Center of the band indicates 0°
bearing error. Left or right meter
scale limit indicates bearing errors of
±0.5%.

ITEM DESCRIPTION

3. LOC DDM Control

Selects amount of LOC pointer deviation
of an ILS Indicator under test.
Calibrations in DDM represent, standard
deflection (.093), full scale (.155) and
greater than full scale deflections (.200).
Clockwise rotation provides upward
deflection.

The 150 ~ or 90 ~ position deletes the
opposite tone (90 or 150 Hz) and sets
the selected tone (150 or 90 Hz) to the
same level as the on course value
(20%) for a flag test.

NOTE: Setting the G/S DDM Control to

the same 150 ~ or 90 ~ position
when using the Localizer
function deletes the selected
Localizer tone.

Setting the LOC DDM Control to 150 ~
and the G/S DDM Control to 90 ~ or vice
versa provides continuous wave
operation.

The p position allows the LOC VAR
DDM/DDM SWEEP AMPLITUDE Control
to set continuously deviated deflection.

4. DIGITAL Display

Provides digital readout of selected VOR
bearing, internal Signal Generator
frequency, external signal frequency or
COM Transmitter frequency. The
COUNTER MODE Switch determines
displayed function.

1-2-2

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Sep 1/04

OPERATION MANUAL
NAV-402AP-3

ITEM DESCRIPTION

5. FREQUENCY MODE Switch

Selects frequency band to be used:
Marker (MKR), VOR, Localizer (LOC),
Glide Slope (G/S) or COMM. Each band
except COM has two positions; one with
a fixed frequency (FIXED) and the other
with a variable frequency (VAR). The
COM band has three positions; one with
a fixed frequency (FIXED) and two with
variable frequencies (COM 25kHz and
COM 8.33kHz).

6. G/S DDM Control

Selects amount of G/S pointer deviation
of an ILS Indicator under test.
Calibrations in DDM represent standard
deflection (.091), full scale (.175) and
greater than full scale deflections (.400).
Clockwise rotation provides upward
deflection.

The 90 ~ or 150 ~ position deletes the
opposite tone (150 or 90 Hz) and sets
the selected tone (90 or 150 Hz) to the
same level as the on course value (40%)
for a flag test.

NOTE: Setting the LOC DDM Control to

the same 90 ~ or 150 ~ position
when using the Glide Slope
function deletes the selected
Glide Slope tone.

Setting the G/S DDM Control to 90 ~ and
the LOC DDM Control to 150 ~ or vice
versa provides continuous wave (CW)
operation.

The p position allows the G/S VAR DDM
Control to set continuously deviated
deflection.

ITEM DESCRIPTION

7. CRYSTAL HI/LO Switch

Selects high (HI) or low (LO) fixed
frequencies in G/S FIXED or VOR FIXED
modes as selected by the FREQUENCY
MODE Switch. The CRYSTAL HI/LO
Switch also applies modulation to the
appropriate Localizer Transmitter
frequency when FREQUENCY MODE
Switch is set to G/S FIXED. The Test
Set pairs Localizer Transmitter
frequencies with G/S fixed frequencies
when AVG/PEAK LOC XMTR ON Switch
is set to PEAK LOC.

8. COUNTER MODE Switch

Selects signal source to be counted and
shown on the DIGITAL Display:

O GEN measures and display internal

Signal Generator frequency.

O HZ (1 Hz resolution), kHZ (10 Hz

resolution), KHZ (100 Hz resolution)
and MHZ (1 kHz resolution) measures
and displays COM Transmitter
frequency connected to COM XMTR
IN Connector or external signal
frequency connected to MOD IN/EXT
FREQ CTR IN Connector.

O BRG measures and displays digital

bearing circuit output to verify
bearing set by VOR BRG SELECT
Switches. In the BRG position, the
bearing monitor circuits also check
VOR modulation for correct operation
at 90°.

9. METER BEARING CENTER Adjust

Used to center the MONITOR Meter when
the MONITOR METER FUNCTION Switch
is set to BRG and the COUNTER MODE
Switch is set to any position except
The METER BEARING CENTER Adjust
sets a reference level in the internal

BRG.

bearing check operation.

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OPERATION MANUAL
NAV-402AP-3

ITEM DESCRIPTION

10. VAR FREQ Controls

Coarse and fine controls manually
channel sweep the internal Signal
Generator frequency when the
FREQUENCY MODE Switch is in a VAR
position. Clockwise rotation increases
the frequency.

11. TUNE Indicator

Indicates a tuned Signal Generator.
The TUNE Indicator stops illuminating
when the Signal Generator is within the
fine tune range.

12. TUNE Control

NOTE: For maximum accuracy, the

TUNE Control should be

adjusted prior to any receiver
tests.

Adjusts the Signal Generator for optimum
tuning. The TUNE Control requires
readjustment when:

O Selecting a different frequency band

with the FREQUENCY MODE Switch.

O Adjusting VAR FREQ Controls to

change frequency more than a few
MHz in any one band.

O Setting or changing the OUTPUT

ATTENUATOR Control.

13. OUTPUT ATTENUATOR Control

Adjusts the Signal Generator output level
at the RF OUT Connector into a 50 Ω
load. The attenuator dial is calibrated in

-dBm (dB below 1 mW). The dial is
accurate below -30 dBm. Another chart
(also included with the Test Set)
converts -dBm to soft µV.

ITEM DESCRIPTION

15. RF OUT Connector

Provides the attenuated Signal Generator
output to UUT. The connected UUT
should provide a 50 Ω termination to the
RF OUT Connector.

NOTE: The RF OUT Connector is diode

protected against an
accidentally keyed COM
Transmitter.

16. COM XMTR IN Connector

CAUTION: MAXIMUM INPUT SHOULD

STAY WITHIN LIMITS
DEFINED IN
1-3-1, TABLE 2, INPUT
POWER VERSUS TIME
LIMITS.

Provides an input to the MONITOR
Meter. Allows for power and frequency
measurements when connected to a COM
Transmitter using a 50 Ω cable.

When the MONITOR METER FUNCTION
Switch is set to 10W or 100W, the
MONITOR METER indicates COM
Transmitter power, either peak
(AVG/PEAK LOC XMTR ON Switch set to
PEAK LOC) or average (AVG/PEAK LOC
XMTR ON Switch set to AVG). The Test
Set connects an internal 25 dB
attenuator in series with the power
monitor circuit.

When the COUNTER MODE Switch is set
to HZ, KHZ, KHZ or MHZ, the DIGITAL
Display indicates COM Transmitter
frequency.

NOTE: Soft µV are µV measured with

50 Ω loading. Hard µ V are µ V
measured through a 6 dB
attenuator, into a 50 Ω load.

14. FINE TUNE SwitchThis switch fine tunes
the Signal Generator output when the
TUNE Indicator stops illuminating (signal
within tune range). With the FINE TUNE
Switch pressed, the TUNE Control tunes
the signal for minimum deflection from 0
(zero) on the MONITOR Meter.

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OPERATION MANUAL
NAV-402AP-3

ITEM DESCRIPTION

17. AVG/PEAK LOC XMTR ON Switch

Selects power meter function displayed
on MONITOR Meter when MONITOR
METER FUNCTION Switch is set to 10W
or 100W:

O PEAK sets the MONITOR Meter to

display peak power amplitude of a
COM Transmitter with modulation
applied. PEAK also provides
Localizer Transmitter output
simultaneously with the Glide Slope
signal when the FREQUENCY MODE
Switch is set to G/S FIXED (for
checking Autopilots or Course
Computers).

O AVG sets the MONITOR Meter for

displaying the average RF power of a
COM Transmitter and disregards
power changes due to proper
modulation.

18. 90/150 Hz VAR PHASE (φ ) Switch

Varies the phase (φ) of the 150 Hz tone
relative to the 90 Hz tone. Normally, the
90 and 150 Hz tones, used in Glide
Slope and Localizer simulations, are
locked in phase together. Adjusting the
VOR BRG SELECT Switches while
pressing the 90/150 Hz VAR PHASE (φ)
Switch, changes phase relationship. If
the VOR BRG SELECT Switches are set
to 000.0, pressing the 90/150 Hz VAR
PHASE (φ) Switch produces no change in
phase. Each 1° step selected on the
VOR BRG SELECT Switches shifts the
150 Hz tone 5° relative to the 90 Hz
tone. The 90 Hz tone always remains
constant in phase relative to the 000.0
set on the VOR BRG SELECT Switches.

Setting the VOR BRG SELECT Switches
to 024.0 (24° VOR bearing) with the
90/150 Hz VAR PHASE (φ) Switch
pressed puts the 90 and 150 Hz tones in
original phase relationship. Setting the
VOR BRG SELECT Switches to 012.0
(12° VOR bearing) with the 90/150 Hz
VAR PHASE (φ) Switch pressed, places
the amplitude summation of the 90 and
150 Hz tones at maximum magnitude.

ITEM DESCRIPTION

19. G/S CENTER Adjust

Varies the amplitude of the 90 Hz tone
and controls exact course centering for
Glide Slope modulation.

20. G/S VAR DDM Control

Continuously varies G/S pointer
deflection from counterclockwise (ccw)

0.8 DDM (down) through 0 DDM to
clockwise (cw) 0.8 DDM (up). Setting the
G/S DDM Control to p activates the G/S
VAR DDM Control.

21. TONE SELECT Switch

Selects modulation input to the internal
Signal Generator or input to the internal
digital Counter:

O CTR IN connects the MOD IN/EXT

FREQ CTR IN Connector input to the
Counter, active with COUNTER
MODE Switch set to HZ, KHZ, KHZ or
MHZ.

O MOD IN applies the MOD IN/EXT

FREQ CTR IN Connector modulation
to the Signal Generator.

O 1020 applies 1020 Hz modulation to

the frequency band (except G/S) set
by FREQUENCY MODE Switch.

O 400 applies 400 Hz modulation to the

frequency band (except G/S) set by
FREQUENCY MODE Switch.

O 1300 applies 1300 Hz modulation to

the frequency band (except G/S) set
by FREQUENCY MODE Switch.

O 3000 applies 3000 Hz modulation to

the frequency band (except G/S) set
by FREQUENCY MODE Switch.

22. MOD IN/EXT FREQ CTR IN Connector

Provides an input for external modulation
to the internal Signal Generator or a 1 to
300 MHz signal to the internal digital
Counter as selected by the TONE
SELECT Switch.

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Sep 1/04

OPERATION MANUAL
NAV-402AP-3

ITEM DESCRIPTION

23. LOC CENTER Adjust

Varies the amplitude of the 90 Hz tone
and controls exact course centering for
Localizer modulation.

24. LOC VAR DDM/DDM SWEEP AMPLITUDE
Control

Controls variable Localizer DDM/DDM
sweep amplitude when the LOC DDM
Control is set to p and according to LOC
DDM SWEEP Switch setting:

O LOC DDM SWEEP Switch set to O.

Continuously varies LOC pointer
deflection from ccw 0.4 DDM (left)
through 0 DDM to cw 0.4 DDM (right).

O LOC DDM SWEEP Switch set to AL,

S or AR.

Sets the maximum DDM
deflection/sweep amplitude from 0 to
30 µA (±0.0155 DDM) for an
automatic LOC DDM sweep.

25. 9.96 kHz REF LEVEL Control

Adjusts modulation percentage of the

9.96 kHz VAR tone (part of VOR
composite signal) from 0 to 30%. The

9.96 kHz VAR LEVEL Control (outside
larger knob) reaches 30% when turned
past 30 to the stop.

26. 30 Hz VAR LEVEL Control

Adjusts modulation percentage of the
30 Hz VAR tone (part of VOR composite
signal) from 0 to 30%. The 30 Hz VAR
LEVEL Control (inside smaller knob)
reaches 30% when turned past 30 to the
stop.

27. LOC DDM SWEEP Switch

Sets the Localizer sweep mode:

O O allows manual sweep or variable

DDM adjusted by LOC VAR DDM/DDM
SWEEP AMPLITUDE Control.

ITEM DESCRIPTION

27. LOC DDM SWEEP Switch (cont)

O S initiates automatic LOC DDM sweep

beginning at 0 DDM and deflecting to
the direction according to the prior
arming setting (AR or AL). The
sweep continues to the maximum
pointer deflection determined by the
LOC VAR DDM/DDM SWEEP
AMPLITUDE Control setting. The
sweep reverses and continues to the
maximum pointer deflection in the
other direction. The sweep is
symmetrical relative to 0 DDM.

28. PWR/BAT Switch

Two position switch controls power to the
Test Set:

O PWR connects Test Set to ac line

power connected to AC IN Connector.

O BAT connects or disconnects Test

Set from internal Battery. Connecting
the Test Set to the Battery activates
an internal battery timer. Test Set
operation disconnects from the
internal Battery after reaching the
internal battery timer limit (≈6 to
10 minutes) or by pressing the
PWR/BAT Switch to BAT to
disconnect.

29. MASTER MOD LEVEL Control

Controls modulation level of all
modulating tones:

O CAL (detent) position (fully ccw) fixes

modulation levels of each type of
signal to normal values; 20% for
LOC, 30% for VOR and COMM, 40%
for G/S and 95% for MKR.

O Other than CAL, adjusts modulation

levels of each type of signal from 3%
to 35% for LOC, 55% for VOR and
COMM, 75% for G/S and 96% for G/S.

O AR (arm right) or AL (arm left)

initializes internal sweep circuit to
0 DDM and determines initial sweep
direction prior to selecting sweep
mode (S).

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Sep 1/04

OPERATION MANUAL
NAV-402AP-3

ITEM DESCRIPTION

30. POWER ON Indicator

Illuminates when applying ac or battery
power to the Test Set.

31. VOR BRG SELECT Switches

Four thumbwheel switches select the
VOR bearing, in degrees, simulated by
the Test Set. Valid range is 0° to 360.0°.

32. VOR BRG TO/FROM Switch

Changes VOR bearing selected by VOR
BRG SELECT Switches to reciprocal
bearing for flag tests, etc.

2.2 REAR PANEL

Refer to 1-2-2, Figure 2.

ITEM DESCRIPTION

33. NAV TONE OUT Connector

Provides audio output to test VOR
bearing circuits or deviation circuits of
Localizer and Glide Slope Navigational
Receivers. The MASTER MOD LEVEL
Control varies the output level ≈0 to
7 V
Connector also provides access to the
audio modulation of the Marker and COM
signals by connecting internally to the
Test Set Modulator.

34. SIG GEN DEMOD Connector

Provides demodulated output of the
internal Signal Generator. The output,
used for monitoring Test Set capability,
can feed VOR and ILS Converters. If the
available output voltage is adequate and
the ≈+4.25 Vdc component is acceptable,
the output can drive a Converter.

into 1000 Ω . The NAV TONE OUT

p-p

35. PWR MON DEMOD Connector

Provides access to the demodulated
output of a COM Transmitter connected
to the COM XMTR IN Connector. The
output can be used to display modulation
on an oscilloscope or listen to
modulation through an external amplifier.

36. FUSES

Fuses input power to the Test Set. Refer
to Table 1-2-1, Table 1 for correct fuse
size and type.

37. VOLTAGE SELECT Switch

Selects 115 or 230 VAC to match input
ac power.

38. AC IN Connector

Provides input for external ac power.
Refer to para 1-2-1.5 for Power
Requirements.

1-2-2

Page 8

Sep 1/04

3. GENERAL OPERATING PROCEDURES

OPERATION MANUAL
NAV-402AP-3

3.1 GENERAL

This section contains operating instructions for
the NAV-402AP-3. The operating instructions
contain general procedures, identifying the
controls, connectors, indicators used for the
individual test functions. For specific Unit
Under Test (UUT) Procedures, refer to the
appropriate UUT Manual.

CAUTION: WHEN OPERATING THE TEST

SET IN A VERTICAL POSITION,
REMOVE THE LID TO PREVENT
THE TEST SET FROM TIPPING
OVER.

Refer to 1-2-2, Figure 2 for location of
controls, connectors and indicators.

3.2 SIGNALS SIMULATED

The NAV-402AP-3 is a bench and ramp test
instrument for MARKER, VOR, ILS and COM
equipment.

The NAV-402AP-3 simulates MARKER signals
with Inner (3000 Hz), Middle (1300 Hz) and
Outer (400 Hz) tones.

VOR Ground Station signals are simulated by
an RF signal modulated by a 30 Hz reference
signal, a variable 30 Hz signal and a 9960 Hz
signal.

Localizer (LOC) signals are simulated by
modulating RF with 90 and 150 Hz tones.

Glide Slope (G/S) signals are simulated by
modulating RF with 90 and 150 Hz tones.

COM signals are simulated by modulating RF
with the 400, 1300 or 3000 Hz MARKER tones
or the 1020 Hz IDENT tone. IDENT can also
be applied to MARKER, VOR or Localizer
signals.

3.3 OPERATION CAUTIONS

The NAV-402AP-3 must be used in the
following frequency fixed modes during ramp
use:

O COM

O G/S

O LOC

O VOR

3.4 RAMP OPERATION

With the exception of Marker Beacon, most
NAV COM systems of a typical avionics
package can be checked when the Test Set is
placed in a vertical position in the cockpit.
The antenna is extended vertically 2-3 ft. With
the antenna on the RF Output Connector, the
VOR, LOC and G/S modes of NAV COM
Receivers can be checked and indicators
operated through the limits. The COM
Receiver can also be operated, modulating the
Test Set with either the 400, 1300 or 300 Hz
tones or the 1020 Hz IDENT tone.

On some installations, the Marker Antenna is
located far aft on the fuselage. When this
occurs, and receiver sensitivity is low (-35 to ­45 dBm), the Test Set situated in the cockpit
radiates RF insufficient to operate the
Receiver. Moving the Test Set outside the
aircraft normally provides more than enough
signal strength to completely check Marker
audio and lights.

To check COM Transmitter frequencies from
the cockpit, connect the COM Transmitter
output to the COM Transmitter Input Connector
and select MHz on the COUNTER MODE
Switch. The Test Set reads out the COM
Transmitter frequency when the COM
Transmitter is keyed.

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Page 1

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

3.5 BENCH OPERATION

Bench testing dictates the use of direct coaxial
cable connections between the Test Set and
UUT. The Attenuator Dial readout is the RF
level in dBm present at the RF OUT Connector
into 50 Ω. To conduct accurate sensitivity
measurements, the loss in dBm of the
connecting coaxial cables must be known.

CAUTION: MOST COM RECEIVER

ANTENNA CONNECTORS ARE
ALSO USED FOR THE COM
TRANSMITTER CONNECTOR.
THE TRANSMITTER SHOULD BE
KEYED ONLY WHEN THE COM
ANTENNA CONNECTOR IS
DISCONNECTED FROM THE
TEST SET RF OUT
CONNECTOR. DAMAGE TO THE
ATTENUATOR AND SIGNAL
GENERATOR SYSTEM MAY
RESULT.

3.6 COUNTER OPERATION

With the TONE SELECT Switch in the CTR IN
position, the Test Set Counter may be utilized
as a general utility Counter. Frequencies from
1 to 300 MHz can be measured. The Counter
Mode Switch can be used in any of the four
time base positions: Hz, kHz, KHz or MHz.

3.8 OPERATE LOC AND G/S
SIMULTANEOUSLY

To operate the LOC and G/S outputs
simultaneously:

O Adjust all controls for normal G/S operation

(G/S FIXED mode, only). The Output
Attenuator varies the RF level of the G/S
signal, and G/S DDM controls vary the DDM
of the G/S signal.

O Select LOC with the AVG/PEAK LOC XMTR

ON Switch to activate a separate Localizer
generator in the Test Set. This generator
output is combined with the G/S output at
the RF Output Connector at the fixed level
of -18 dBm (approx.). LOC DDM Controls
vary the DDM of the Localizer signal.

3.7 BATTERY PARAMETERS

The battery permits completely portable ramp
operation for up to two hours.

In battery operation, an automatic timer turns
the Test Set OFF after 6 to 10 minutes. The
Test Set can be recycled by pressing the
PWR/BAT Switch to the BAT position.

With the MONITOR METER FUNCTION switch
in the BAT position, the MONITOR meter 0 to
30% scale displays battery voltage. Normal
battery charged condition is indicated as ≥15 V
or greater. Battery voltage <12.5 V indicates a
discharged battery. An automatic low voltage
cutoff circuit turns the Test Set OFF when the
battery voltage drops under 12.5 V.

NOTE: If the Test Set is used only for bench

operation, the battery can lose
storage ability. The Test Set should
be periodically operated on battery
power to allow the battery to partially
discharge.

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Page 2

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

3.9 MARKER OPERATION
(TYPICAL CONTROL SETTINGS)

STEP PROCEDURE

1. MONITOR METER FUNCTION Switch

RF to verify proper leveling of internal
Signal Generator on the MONITOR
Meter.

100% to verify 95% modulation of Signal
Generator on the MONITOR Meter.

2. FREQUENCY MODE Switch

MKR FIXED is mandatory in ramp
operation and is used on bench for
standard Marker center frequency.

MKR VAR Set VAR FREQ Controls to
select the desired channel in 25 kHz
steps.

3. COUNTER MODE Switch

GEN to read out the Signal Generator
frequency on the DIGITAL Display when
operating in fixed (FIXED) or variable
(VAR) modes.

STEP PROCEDURE

10. PWR/BAT Switch

PWR to use external ac line power
through the AC IN Connector.

BAT to initiate operation using internal
battery.

4. TUNE Control

Adjust until TUNE Indicator stops
illuminating, indicating Signal Generator
is in the fine tune range.

5. FINE TUNE Switch

Press and adjust TUNE Control until
MONITOR Meter indicates least
deflection from left.

6. OUTPUT ATTENUATOR Control

Use as needed to establish Receiver
sensitivities.

7. RF OUT Connector

Connect to Receiver Antenna Connector,
or attach Antenna in ramp operation.

8. TONE SELECT Switch

Select desired tone: 1020 (Ident tone),
400, 1300 or 3000 Hz.

9. MASTER MOD LEVEL Control

Set to CAL for 95% or variable from 3%
to 96%.

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Page 3

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

3.10 VOR OPERATION
(TYPICAL CONTROL SETTINGS)

STEP PROCEDURE

1. MONITOR METER FUNCTION Switch

RF to verify proper leveling of internal
Signal Generator on the MONITOR
Meter.

30% or 100% to verify or set 30%
modulation of each VOR modulating
tone.

BRG to verify operation of bearing signal
at 90° (internally).

2. COUNTER MODE Switch

GEN to read out the Signal Generator
frequency on the DIGITAL Display when
operating in fixed (FIXED) or variable
(VAR) modes.

3. FREQUENCY MODE Switch

VOR FIXED is mandatory in ramp
operation and is used on bench for a
fixed channel center frequency.

VOR VAR to check all channel bench
operation. Set VAR FREQ Controls to
select the desired channel in 25 kHz
steps.

4. TUNE Control

Adjust until TUNE Indicator stops
illuminating, indicating Signal Generator
is in the fine tune range.

5. FINE TUNE Switch

Press and adjust TUNE Control until
MONITOR Meter indicates least
deflection from left.

STEP PROCEDURE

9. 30 Hz VAR LEVEL Control

Vary the 30 Hz modulation level from 0%
to 30%.

10. 9.96 kHz REF LEVEL Control

Vary the 9.96 kHz modulation level from
0% to 30%.

11. MASTER MOD LEVEL Control

Set to CAL for 30% for each VOR tone or
variable from 3% to 55% for each VOR
tone.

12. PWR/BAT Switch

PWR to use external ac line power
through the AC IN Connector.

BAT to initiate operation using internal
Battery.

13. VOR BRG SELECT Switches

Set to desired bearing for radial testing
and alignment.

14. VOR BRG TO/FROM Switch

Set to obtain reciprocals of selected
bearings for Indicator flag tests.

15. CRYSTAL HI/LO Switch (FREQUENCY

MODE Switch set to VOR FIXED)

HI for 112.8 MHz RF output.

LO for 108 MHz RF output.

6. OUTPUT ATTENUATOR Control

Use as needed to establish Receiver
sensitivities.

7. RF OUT Connector

Connect to Receiver Antenna Connector,
or attach Antenna in ramp operation.

8. TONE SELECT Switch

Select desired tone: 1020 (Ident tone),
400, 1300 or 3000 Hz.

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Page 4

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

3.11 LOCALIZER OPERATION
(TYPICAL CONTROL SETTINGS)

STEP PROCEDURE

1. MONITOR METER FUNCTION Switch

RF to verify proper leveling of internal
Signal Generator on the MONITOR
Meter.

30% to verify or set 20% modulation of
each modulating tone and set course
centering on the MONITOR Meter.

2. COUNTER MODE Switch

GEN to read out the Signal Generator
frequency on the DIGITAL Display when
operating in fixed (FIXED) or variable
(VAR) modes.

3. FREQUENCY MODE Switch

LOC FIXED is mandatory in ramp
operation and is used on bench for a
fixed channel center frequency.

LOC VAR to check all channel bench
operation. Set VAR FREQ Controls to
select the desired channel in
25 kHz steps.

4. TUNE Control

Adjust until TUNE Indicator stops
illuminating, indicating Signal Generator
is in the fine tune range.

STEP PROCEDURE

9. LOC DDM Control

Use steps for precise amounts of
deflection and flag tests.

10. LOC DDM/DDM SWEEP AMPLITUDE
Control

Use to check Auto-pilot Servos, meter
stickiness, etc. or to set DDM sweep
amplitude.

11. LOC DDM SWEEP Switch

Use to select initial direction of DDM
sweep.

12. MASTER MOD LEVEL Control

Set to CAL for 20% each course tone and
30% audio tone or variable from 3% to
35% each course tone and 3% to 55%
audio tone.

13. PWR/BAT Switch

PWR to use external ac line power
through the AC IN Connector.

BAT to initiate operation using internal
Battery power.

5. FINE TUNE switch

Press and adjust TUNE Control until
MONITOR Meter indicates least
deflection from left.

6. OUTPUT ATTENUATOR Control

Use as needed to establish Receiver
sensitivities.

7. RF OUT Connector

Connect to Receiver Antenna Connector,
or attach Antenna in ramp operation.

8. TONE SELECT Switch

Select audio tone: 1020 (Ident tone),
400, 1300 or 3000 Hz as desired.

1-2-3

Page 5

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

3.12 GLIDE SLOPE OPERATION
(TYPICAL CONTROL SETTINGS)

STEP PROCEDURE

1. MONITOR METER FUNCTION Switch

RF to verify proper leveling of internal
Signal Generator on the MONITOR
Meter.

100% to verify or set 40% modulation of
each modulating tone and set course
centering on the MONITOR Meter.

2. COUNTER MODE Switch

GEN to read out the Signal Generator
frequency on the DIGITAL Display when
operating in fixed (FIXED) or variable
(VAR) modes.

3. FREQUENCY MODE Switch

G/S FIXED is mandatory in ramp
operation and is used on bench for a
fixed channel center frequency.

G/S VAR to check all channel bench
operation. Set VAR FREQ Controls to
select the desired channel in
50 kHz steps.

4. CRYSTAL HI/LO Switch (FREQUENCY
MODE Switch set to G/S FIXED

STEP PROCEDURE

9. G/S DDM Control

Use steps for precise amounts of
deflection and flag tests.

10. G/S VAR DDM Control

Use to check Auto-pilot Servos, meter
stickiness, etc.

11. MASTER MOD LEVEL Control

Set to CAL for 40% each course tone or
variable from 3% to 75%.

12. PWR/BAT Switch

PWR to use external ac line power
through the AC IN Connector.

BAT to initiate operation using internal
Battery power.

13. AVG/PEAK LOC XMTR Switch

(FREQUENCY MODE Switch set to G/S

FIXED)

PEAK LOC for simultaneous G/S and
LOC output.

HI for 334.7 MHz RF output

LO for 329.6 MHz RF output.

5 TUNE Control

Adjust until TUNE Indicator stops
illuminating, indicating Signal Generator
is in the fine tune range.

6. FINE TUNE switch

Press and adjust TUNE Control until
MONITOR Meter indicates least
deflection from left.

7. OUTPUT ATTENUATOR Control

Use as needed to establish Receiver
sensitivities.

8. RF OUT Connector

Connect to Receiver Antenna Connector,
or attach Antenna in ramp operation.

1-2-3

Page 6

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

3.13 COMMUNICATION OPERATION
(RECEIVER TESTS)
(TYPICAL CONTROL SETTINGS)

STEP PROCEDURE

1. MONITOR METER FUNCTION Switch

RF to verify proper leveling of internal
Signal Generator on the MONITOR
Meter.

30% or 100% to verify or set 30% sine­wave modulation tone on the MONITOR
Meter.

2. COUNTER MODE Switch

GEN to read out the Signal Generator
frequency on the DIGITAL Display when
operating in fixed (FIXED) or variable
(VAR) modes.

3. FREQUENCY MODE Switch

COM FIXED is mandatory in ramp
operation and is used on bench for a
stable channel center frequency.

COM 25 KHz to check COM Receiver
channels. Set VAR FREQ Controls as
desired from 118.000 to 156.000 MHz,
in 25 KHz steps.

COM 8.33 KHz to check COM Receiver
channels. Set VAR FREQ Controls as
desired from 118.000 to 156.000 MHz,
in 8.33 kHz steps. (1-2-3, Table 1)

4. VAR FREQ Controls (FREQUENCY MODE

Switches set to COM 25 KHz or
COM 8.33 KHz)

STEP PROCEDURE

7. OUTPUT ATTENUATOR Control

Use as needed to establish Receiver
sensitivities.

8. RF OUT Connector

Connect to Receiver Antenna Connector,
or attach Antenna in ramp operation.

9. TONE SELECT Switch

Select audio tone: 1020, 400, 1300 or
3000 Hz as desired; or MOD IN to apply
external modulation through MOD IN/EXT
FREQ CTR IN Connector (bench testing
only).

10. MOD IN/EXT FREQ CTR IN Connector

(TONE SELECT Switch set to MOD IN)

Use to apply external modulation to
Signal Generator.

11. MASTER MOD LEVEL Control

Set to CAL for 30% each tone or variable
from 3% to 55%.

12. PWR/BAT Switch

PWR to use external ac line power
through the AC IN Connector.

BAT to initiate operation using internal
Battery power.

Use as needed to change COM frequency
in 25 kHz steps or 8.33 kHz steps as
determined by the frequency mode
switch.

5. TUNE Control

Adjust until TUNE Indicator stops
illuminating, indicating Signal Generator
is in the fine tune range.

6. FINE TUNE Switch

Press and adjust TUNE Control until
MONITOR Meter indicates least
deflection from left.

1-2-3

Page 7

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

STEP PROCEDURE

12. PWR/BAT Switch (cont)

NOTE: Sequence repeats every 100 kHz, from

118.000 MHz to 156.000 MHz.

LAST 2 DIGITS OF

DIGITAL DISPLAY

00 xxx.x0000 MHz
08 OR 09 xxx.x0833 MHz
16 OR 17 xxx.x1666 MHz

25 xxx.x2500 MHz

33 or 34 xxx.x3333 MHz
41 or 42 xxx.x4166 MHz

50 xxx.x5000 MHz

58 or 59 xxx.x5833 MHz
66 or 67 xxx.x6666 MHz

75 xxx.x7500 MHz

83 or 84 xxx.x8333 MHz
91 or 92 xxx.x9166 MHz

Displayed Frequency vs Actual Nominal

Output Frequency in COM 8.33 kHz Mode

NOMINAL OUTPUT

FREQUENCY

Table 1

3.14 COMMUNICATION OPERATION
(TRANSMITTER TESTS)
(TYPICAL CONTROL SETTINGS)

STEP PROCEDURE

1. MONITOR METER FUNCTION Switch

10W or 100W to measure COM
Transmitter power on the MONITOR
Meter.

2. COUNTER MODE Switch

HZ or KHZ to measure COM Transmitter
frequency as shown on the DIGITAL
Display.

KHZ or MHZ to measure COM
Transmitter frequency (in HF or VHF
bands) as shown on the DIGITAL
Display.

3. COM XMTR IN Connector

Connect to COM Transmitter output.

4. AVG/PEAK LOC XMTR Switch

PEAK LOC for indicating increase in
power during modulation as shown on the
MONITOR Meter.

AVG for indicating only average power
on the MONITOR Meter, disregarding
modulation.

5. TONE SELECT Switch

CTR IN to measure COM Transmitter
frequencies over the air through the MOD
IN/EXT FREQ CTR IN Connector.

6. MOD IN/EXT FREQ CTR IN Connector

(TONE SELECT Switch set to CTR IN)

Connect Whip Antenna for COM
frequency measurements in portable
operation.

7. PWR/BAT Switch

PWR to use external ac line power
through the AC IN Connector.

BAT to initiate operation using internal
Battery power.

1-2-3

Page 8

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

DECIBELS VOLTS WATTS DECIBELS VOLTS WATTS

+40 dBw
+39 dBw
+38 dBw
+37 dBw
+36 dBw

+35 dBw
+34 dBw
+33 dBw
+32 dBw
+31 dBw

+30 dBw
+29 dBw
+28 dBw
+27 dBw
+26 dBw

+25 dBw
+24 dBw
+23 dBw
+22 dBw
+21 dBw

+20 dBw
+19 dBw
+18 dBw
+17 dBw
+16 dBw

+15 dBw
+14 dBw
+13 dBw
+12 dBw
+11 dBw

+10 dBw

+9 dBw
+8 dBw
+7 dBw
+6 dBw

709 V
633 V
563 V
501 V
447 V

399 V
355 V
317 V
282 V
252 V

224 V
200 V
178 V
159 V
141 V

126 V
112 V
100 V

89.1 V

79.5 V

70.9 V

63.3 V

56.3 V

50.1 V

44.7 V

39.9 V

35.5 V

31.7 V

28.2 V

25.2 V

22.4 V

20.0 V

17.8 V

15.9 V

14.1 V

10.00 kW

7.94 kW

6.32 kW

5.00 kW

3.98 kW

3.16 kW

2.51 kW

2.00 kW

1.59 kW

1.26 kW

1.00 kW
794 W
632 W
500 W
398 W

316 W
251 W
200 W
159 W
126 W

100 W

79.4 W

63.2 W

50.0 W

39.8 W

31.6 W

25.1 W

20.0 W

15.9 W

12.6 W

10.0 W

7.94 W

6.32 W

5.00 W

3.98 W

+5 dBw

+4 dBw
+3 dBw
+2 dBw
+1 dBw

+30 dBm
+29 dBm
+28 dBm
+27 dBm
+26 dBm

+25 dBm
+24 dBm
+23 dBm
+22 dBm
+21 dBm

+20 dBm
+19 dBm
+18 dBm
+17 dBm
+16 dBm

+15 dBm
+14 dBm
+13 dBm
+12 dBm
+11 dBm

+10 dBm

+9 dBm
+8 dBm
+7 dBm
+6 dBm

+5 dBm
+4 dBm
+3 dBm
+2 dBm
+1 dBm

12.6 V

11.2 V

10.0 V

8.91 V

7.95 V

7.09 V

6.33 V

5.63 V

5.01 V

4.47 V

3.99 V

3.55 V

3.17 V

2.82 V

2.52 V

2.24 V

2.00 V

1.78 V

1.59 V

1.41 V

1.26 V

1.12 V

1.00 V
891 mV
795 mV

709 mV
633 mV
563 mV
501 mV
447 mV

399 mV
355 mV
317 mV
282 mV
252 mV

3.16 W

2.51 W

2.00 W

1.59 W

1.26 W

1.00 W
794 mW
632 mW
500 mW
398 mW

316 mW
251 mW
200 mW
159 mW
126 mW

100 mW

79.4 mW

63.2 mW

50.0 mW

39.8 mW

31.6 mW

25.1 mW

20.0 mW

15.9 mW

12.6 mW

10.0 mW

7.94 mW

6.32 mW

5.00 mW

3.98 mW

3.16 mW

2.51 mW

2.00 mW

1.59 mW

1.26 mW

Correspondence Chart for Decibels, Volts and Watts

Table 2

1-2-3

Page 9

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

DECIBELS VOLTS WATTS DECIBELS VOLTS WATTS

+0 dBm

-1 dBm

-2 dBm

-3 dBm

-4 dBm

-5 dBm

-6 dBm

-7 dBm

-8 dBm

-9 dBm

-10 dBm

-11 dBm

-12 dBm

-13 dBm

-14 dBm

-15 dBm

-16 dBm

-17 dBm

-18 dBm

-19 dBm

-20 dBm

-21 dBm

-22 dBm

-23 dBm

-24 dBm

-25 dBm

-26 dBm

-27 dBm

-28 dBm

-29 dBm

-30 dBm

-31 dBm

-32 dBm

-33 dBm

-34 dBm

224 mV
200 mV
178 mV
159 mV
141 mV

126 mV
112 mV
100 mV

89 mV
79 mV

70.9 mV

63.3 mV

56.3 mV

50.1 mV

44.7 mV

39.9 mV

35.5 mV

31.7 mV

28.2 mV

25.2 mV

22.4 mV

20.0 mV

17.8 mV

15.9 mV

14.1 mV

12.6 mV

11.2 mV

10.0 mV

8.9 mV

7.95 mV

7.09 mV

6.33 mV

5.63 mV

5.01 mV

4.47 mV

1.00 mW
794 µW

632 µW

500 µW

398 µW

316 µW

251 µW

200 µW

159 µW

126 µW

100 µW

79.4 µW

63.2 µW

50.0 µW

39.8 µW

31.6 µW

25.1 µW

20.0 µW

15.9 µW

12.6 µW

10.0 µW

7.94 µW

6.32 µ

5.00 µW

3.98 µW

3.16 µW

2.51 µW

2.00 µW

1.59 µW

1.26 µW

1.00 µW

W

794 nW
632 nW
500 nW
398 nW

-35 dBm

-36 dBm

-37 dBm

-38 dBm

-39 dBm

-40 dBm

-41 dBm

-42 dBm

-43 dBm

-44 dBm

-45 dBm

-46 dBm

-47 dBm

-48 dBm

-49 dBm

-50 dBm

-51 dBm

-52 dBm

-53 dBm

-54 dBm

-55 dBm

-56 dBm

-57 dBm

-58 dBm

-59 dBm

-60 dBm

-61 dBm

-62 dBm

-63 dBm

-64 dBm

-65 dBm

-66 dBm

-67 dBm

-68 dBm

-69 dBm

3.99 mV

3.55 mV

3.17 mV

2.82 mV

2.52 mV

2.24 mV

2.00 mV

1.78 mV

1.59 mV

1.41 mV

1.26 mV

1.12 mV

1.00 mV
891 µV

795 µV

709 µV

633 µV

563 µV

501 µV

447 µV

399 µV

355 µV

317 µV

282 µV

252 µV

224 µV

200 µV

178 µV

159 µV

141

µV

126 µV

112 µV

100 µV

89.1 µV

79.5 µV

316 nW
251 nW
200 nW
159 nW
126 nW

100 nW

79.4 nW

63.2 nW

50.0 nW

39.8 nW

31.6 nW

25.1 nW

20.0 nW

15.9 nW

12.6 nW

10.0 nW

7.94 nW

6.32 nW

5.00 nW

3.98 nW

3.16 nW

2.51 nW

2.00 nW

1.59 nW

1.26 nW

1.00 nW
794 pW
632 pW
500 pW
398 pW

316 pW
251 pW
200 pW
159 pW
126 pW

Correspondence Chart for Decibels, Volts and Watts

Table 2 (cont)

1-2-3

Page 10

Sep 1/04

DECIBELS VOLTS WATTS

-70 dBm

-71 dBm

-72 dBm

-73 dBm

-74 dBm

-75 dBm

-76 dBm

-77 dBm

-78 dBm

-79 dBm

-80 dBm

-81 dBm

-82 dBm

-83 dBm

-84 dBm

-85 dBm

-86 dBm

-87 dBm

-88 dBm

-89 dBm

70.9 µV

63.3 µV

56.3 µV

50.1 µV

44.7 µV

39.9 µV

35.5 µV

31.7 µV

28.2 µV

25.2 µV

22.4 µV

20.0 µV

17.8 µV

15.9 µV

14.1 µV

12.6 µV

11.2 µV

10.0 µV

8.91 µV

7.95 µV

Correspondence Chart for Decibels, Volts and Watts

100 pW

79.4 pW

63.2 pW

50.0 pW

39.8 pW

31.6 pW

25.1 pW

20.0 pW

15.9 pW

12.6 pW

10.0 pW

7.94 pW

6.32 pW

5.00 pW

3.98 pW

3.16 pW

2.51 pW

2.00 pW

1.59 pW

1.26 pW

OPERATION MANUAL
NAV-402AP-3

Table 2 (cont)

1-2-3

Page 11

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

LOCALIZER

TONE DIFFERENCE VALUES COURSE DEVIATION INDICATOR

% MODULATION

90 Hz 150 Hz DDM DECIBELS DEFLECTION P A

20.00 20.00 0 0 Centered 0

15.35 24.65 0.093 4.114 Standard 90

12.25 27.75 0.155 7.102 Full Scale 150

10.00 30.00 0.200 9.542 > Full Scale 194

0.00 40.00 0.4 Infinity Full One Tone, Delete Other 387

NOTE: Standard CDI Deflection = 60% of Full Scale (Linear Movement).

NOTE: Deflections in µ A apply to Indicators with Full Scale Deflection Current of 150 µA.

Correspondence Chart for 90 Hz and 150 Hz Tones (LOC)

Table 3

GLIDE SLOPE

TONE DIFFERENCE VALUES COURSE DEVIATION INDICATOR

% MODULATION

90 Hz 150 Hz DDM DECIBELS DEFLECTION P A

40.00 40.00 0 0 Centered 0

35.45 44.55 0.091 1.988 Standard 78

31.25 48.75 0.175 3.622 Full Scale 150

20.00 60.00 0.400 9.542 > Full Scale 343

0.00 80.00 0.8 Infinity Full One Tone, Delete Other 686

NOTE: Standard G/S Indicator Deflection = 53% of Full Scale (Linear Movement).

NOTE: Deflections in µ A apply to Indicators with Full Scale Deflection Current of 150 µA.

Correspondence Chart for 90 Hz and 150 Hz Tones (G/S)

Table 4

1-2-3

Page 12

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

SECTION 3 - SPECIFICATIONS

1. NAV-402AP-3 SPECIFICATIONS

NOTE: A 15 minute warm-up period is required for all specifications

1.1 RF OUTPUT

Output Level Range: Continuously variable from -7 to -110 dBm

Output Level Accuracy: ± 3 dB from -30 to -110 dBm

Output Frequency:

MKR FIXED: 75 MHz

MKR VAR: 72 to 78 MHz in 25 kHz steps

VOR FIXED LO: 108 MHz

VOR FIXED HI: 112.8 MHz

VOR VAR: 107 to 120 MHz in 25 kHz steps

LOC FIXED: 108.1 MHz

LOC VAR: 107 to 120 MHz in 25 kHz steps

G/S FIXED LO: 329.6 MHz

G/S FIXED HI: 334.7 MHz

G/S VAR: 327 to 337 MHz in 50 kHz steps

COM FIXED: 126.9 MHz

COM 25 kHz: 118 to 156 MHz in 25 kHz steps

COM 8.33 kHz: 118 to 156 MHz in 8.33 kHz steps

Frequency Accuracy: ±3 ppm

Temperature Stability: 1 ppm

Aging: 1 ppm

Setability: 1 ppm

Harmonics: ≥15 dBc ( Output Level -30 dBm)

Broadband Noise: ≥70 dBc at ±50 kHz (Output Level -30 dBm)
300 Hz Resolution Bandwidth, 10 Hz Video Filter

Auxiliary Localizer Transmitter:

Output Level: -18 dBm (typical) independent of Output Attenuator setting

Frequency: 108.1 and 110.5 MHz

Frequency Accuracy: ± 0.005%

1-3-1

Page 1

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

1.2 MARKER MODE

Marker Tone Frequency Accuracy:

1020 Hz: ± 1%

400 Hz: ± 1%

1300 Hz: ± 1%

3000 Hz: ± 1%

Marker Tone Demod Distortion
(9960 Hz Reference Level set to min):

1020 Hz: ≤ 2.5%

400 Hz: ≤ 2.5%

1300 Hz: ≤ 2.5%

3000 Hz: ≤ 2.5%

Modulation:

CAL: 95% AM ±5% for each tone

Variable: 3% to 96% AM

External CAL: 95% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

External Variable: 3% to 96% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

1-3-1

Page 2

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

1.3 VOR MODE

VOR Tone Frequency Accuracy:

30 Hz Reference: ± 0.02%

30 Hz Variable: ±0.02%

9960 Hz: ± 0.02%

1020 Hz: ± 1%

VOR Tone Demod Distortion:

30 Hz Variable: ≤2%

1020 Hz: ≤ 2.5%

AM Modulation:

CAL: 30% AM ±2% for each tone

Variable: 3% to 55% AM

External CAL: 30% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

External Variable: 3% to 55% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

FM Modulation: 30 Hz Reference at 480 Hz (± 25 Hz) Deviation on 9960 Hz

Bearing: 359.9 digitally derived courses in 0.1° increments.
Accuracy ± 0.1°

1-3-1

Page 3

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

1.4 LOC MODE

LOC Tone Frequency Accuracy:

90 Hz: ± 0.02%

150 Hz Variable: ±0.02%

1020 Hz: ± 1%

LOC Tone Demod Distortion
(9960 Hz Reference Level set to min):

90 Hz: ≤ 2%

150 Hz: ≤ 2%

1020 Hz: ≤ 2.5%

Modulation:

CAL (90 Hz and 150 Hz): 20% AM ±2% for each tone

CAL (Audio Tones): 30% AM ±2% for each tone

Variable: 3% to 35% AM

External Mod (CAL): 30% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

External Mod Variable: 3% to 55% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

LOC DDM: 0.093, 0.155, and 0.200 DDM and Tone Delete

Accuracy: ± 0.0013 DDM (±1.3 µA)

±0.0013 DDM (±7% of Setting) (At RF Output)

Variable DDM: ±0.4 DDM

Phase Shift: 90 and 150 Hz tones phase locked to 5 times VOR Bearing
Select switch setting (refer to 1-3-1, Table 1)

1-3-1

Page 4

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

1.5 G/S MODE

LOC Tone Frequency Accuracy:

90 Hz: ± 0.02%

150 Hz Variable: ±0.02%

G/S Tone Demod Distortion
(9960 Hz Reference Level set to min):

90 Hz: ≤ 2%

150 Hz: ≤ 2%

Modulation:

CAL (90 Hz and 150 Hz): 40% AM ±2% for each tone

Variable: 3% to 75% AM

LOC DDM: 0.091, 0.175, and 0.40 DDM and Tone Delete

Accuracy: ± 0.0024 DDM (±2.0 µA) (Tone Out)

±0.005 DDM (±5% of Setting) (At RF Output)

Variable DDM: ±0.8 DDM

Phase Shift: 90 and 150 Hz tones phase locked to 5 times VOR Bearing
Select switch setting (refer to 1-3-1, Table 1)

1-3-1

Page 5

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

1.6 COM MODE

COM Tone Frequency Accuracy:

1020 Hz: ± 1%

400 Hz: ± 1%

1300 Hz: ± 1%

3000 Hz: ± 1%

COM Tone Demod Distortion
(9960 Hz Reference Level set to min):

1020 Hz: ≤ 2.5%

400 Hz: ≤ 2.5%

1300 Hz: ≤ 2.5%

3000 Hz: ≤ 2.5%

Modulation:

CAL: 30% AM ±2% for each tone

Variable: 3% to 55% AM

External Mod (CAL): 30% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

External Mod Variable: 3% to 55% AM (typical)
(10 Hz to 20 kHz, 5 Vp-p input)

1-3-1

Page 6

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

CAUTION: MAXIMUM INPUT POWER TO COUNTER IS LIMITED TO 250 mW OR

+24 dBm. EXCEEDING THESE LIMITS MAY DAMAGE THE TEST SET.

1.7 EXTERNAL FREQUENCY COUNTER

Frequency Range:

Hz, kHz: 1 to 10 MHz

kHz, MHz: 10 to 300 MHz

Resolution:

Hz: 1 Hz

kHz (1 to 10 MHz Range): 10 Hz

kHz (10 to 300 MHz Range): 100 Hz

MHz: 1 kHz

Accuracy: ±0.002% (Typically ±0.0005%)

Sensitivity:

10 MHz: 0.08 Vrms (-9 dBm)

200 MHz: 0.15 Vrms (-3 dBm)

300 MHz: 0.23 Vrms (0 dBm)

Impedance: 50 Ω AC terminated

Maximum Input Level: ≤250 mW (+24 dBm)

1.8 POWER METER

Range: 0 to 100 W, 0 to 10 W

Accuracy: ±3% full scale ±5% of reading

Duty Cycle:

≤20 W: Continuous

>20 W to 40 W: 5 minutes on, 50% Duty Cycle

>40 W to 80 W: 1 minute on, 20% Duty Cycle

>80 W to 100 W: 0.5 minute on, 10% Duty Cycle

1-3-1

Page 7

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

1.9 BATTERY LEVEL MONITOR

Range: 0 to 30 V

Accuracy: ±5% of reading

1.10 BEARING MONITOR

Range: ± 0.5° (0° at meter center)

1.11 BATTERY

Type: 2.0 AH NiCad

Duration: ≈ 1.5 Hours Continuous

1.12 AC POWER

Input Range: 100 to 120 VAC, 60 Hz
220 to 240 VAC, 50 Hz

Power Consumption: 38 W Maximum
28 W Nominal at 115 VAC
22 W Nominal at 230 VAC

Fuse Requirements:

100 to 120 VAC: 1.0 A, 250 V, Type F

220 to 240 VAC: 0.5 A, 250 V, Type F

Mains Supply Voltage Fluctuations: ≤±10% of the nominal voltage

Transient Overvoltages: According to Installation Category II

1.13 ENVIRONMENTAL

Use: Pollution Degree 2

Altitude: ≤ 4000 meters (13,124 feet)

Temperature: 5° to 40°C (41° F to 104° F)

Relative Humidity: ≤80% for temperatures up to 31°C (88° F), decreasing
linearly to 50% at 40° C (104° F)

1-3-1

Page 8

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

SETTING ON VOR BEARING

SELECT SWITCHES

000.0 0°

001.0 +5°

002.0 +10°

003.0 +15°

004.0 +20°

005.0 +25°

006.0 +30°

007.0 +35°

008.0 +40°

009.0 +45°

010.0 +50°

011.0 +55°

012.0 +60°

013.0 +65°

014.0 +70°

015.0 +75°

016.0 +80°

017.0 +85°

018.0 +90°

019.0 +95°

020.0 +100°

021.0 +105°

022.0 +110°

023.0 +115°

024.0 +120° or 0°

VOR Bearing Select Switches

Table 1

150 Hz PHASE

RELATIVE TO 90 Hz

1-3-1

Page 9

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

VOR BRG

Switch Position

000.0

001.0

002.0

003.0

004.0

005.0

006.0

007.0

008.0

009.0

010.0

011.0

012.0

013.0

014.0

015.0

016.0

017.0

018.0

019.0

020.0

021.0

022.0

023.0

024.0

NOTE: +120° has the same Phase

Relationship as 0°; therefore,
only 1° through 12° VOR BRG
Switch positions are required.

90 Hz and 150 Hz Tones Variable Phase Relationships

Table 2

150 Hz Phase

Relative to 90 Hz

0°

+5°

+10°

+15°

+20°

+25°

+30°

+35°

+40°

+45°

+50°

+55°

+60°

+65°

+70°

+75°

+80°

+85°

+90°

+95°

+100°

+105°

+110°

+115°

+120° or 0° *

1-3-1

Page 10

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

SECTION 4 - SHIPPING

1. SHIPPING TEST SETS

1.1 INFORMATION

Aeroflex Test Sets returned to factory for
calibration, service or repair must be
repackaged and shipped according to the
following conditions:

AUTHORIZATION

Only return products to factory after first
receiving authorization from Aeroflex Customer
Service Department.

CONTACT: Aeroflex
Customer Service

Telephone: [phone]
FAX: [phone]
email: [e-mail]

TAGGING TEST SETS

All Test Sets must be tagged with:

O Identification and address of owner

O Nature of service or repair required

1.2 REPACKING PROCEDURE

O Make sure bottom packing mold is seated

on floor of shipping container.

O Carefully wrap Test Set with polyethylene

sheeting to protect finish.

O Place Test Set into shipping container,

making sure Test Set is securely seated in
bottom packing mold.

O Place top packing mold over top of Test Set

and press down until mold rests solidly in
bottom packing mold.

O Close shipping container lids and seal with

shipping tape or an industrial stapler. Tie
all sides of container with break resistant
rope, twine or equivalent.

O Model Number

O Serial Number

SHIPPING CONTAINERS

Test Sets must be repackaged in original
shipping containers using Aeroflex packing
molds. If original shipping containers and
materials are unavailable, contact Aeroflex
Customer Service for shipping instructions.

FREIGHT COSTS

All freight costs on non-warranty shipments are
assumed by the customer. (See “Warranty
Packet” for freight charge policy on warranty
claims.)

1-4-1

Page 1

Sep 1/04

OPERATION MANUAL
NAV-402AP-3

TOP PACKING
MOLD

TEST INSTRUMENT
WRAPPED WITH
POLYETHYLENE

HOLD DOWN

SHEETING

STRAP

BOTTOM PACKING
MOLD

SHIPPING CONTAINER

Repacking Procedure

Figure 1

1-4-1

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OPERATION MANUAL
NAV-402AP-3

SECTION 5 - STORAGE

1. STORING TEST SETS

Perform the following storage precautions
whenever the Test Set is stored for extended
periods:

O Disconnect Test Set from any electrical

power source.

O Disconnect and store ac power cable and

other accessories with Test Set.

O Cover Test Set to prevent dust and debris

from covering and entering Test Set.

1-5-1

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1-5-1

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OPERATION MANUAL
NAV-402AP-3

APPENDIX A - TABLE OF I/O CONNECTORS

CONNECTOR TYPE SIGNAL TYPE INPUT/OUTPUT

AC IN IEC320 ac Line Power INPUT

RF OUT BNC RF OUTPUT

COM XMTR IN BNC RF INPUT

MOD IN/EXT FREQ CTR IN BNC RF/AUDIO INPUT

NAV TONE OUT BNC

SIG GEN DEMOD BNC

PWR MON DEMOD BNC

AUDIO

AUDIO

AUDIO

OUTPUT

OUTPUT

OUTPUT

APPENDIX A

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NAV-402AP-3

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APPENDIX A

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APPENDIX B - METRIC/BRITISH IMPERIAL CONVERSION TABLE

WITH NAUTICAL DISTANCE CONVERSIONS

TO
CONVERT: INTO:

cm feet

MULTIPLY
BY:

0.03281

OPERATION MANUAL
NAV-402AP-3

TO
CONVERT: INTO:

meters feet

MULTIPLY
BY:

3.281

cm inches

feet cm

feet meters

ft/sec km/hr

ft/sec knots

ft/sec miles/hr

ft/sec2 cm/sec2

ft/sec2 m/sec2

grams ounces

inches cm

kg pounds

kg/cm2 psi

km feet

3281

0.3937

30.48

0.3048

1.097

0.5921

0.6818

30.48

0.3048

0.03527

2.54

2.205

0.0703

meters inches

m/sec ft/sec

m/sec km/hr

m/sec miles/hr

miles feet

miles km

miles meters

miles nmi

miles/hr ft/sec

miles/hr km/hr

miles/hr knots

nmi feet

nmi km

39.37

3.281

3.6

2.237

5280

1.609

1609

0.8684

1.467

1.609

0.8684

6080.27

1.8532

km miles

km nmi

km/hr ft/sec

km/hr knots

km/hr miles/hr

knots ft/sec

knots km/hr

knots miles/hr

0.6214

0.5396

0.9113

0.5396

0.6214

1.689

1.8532

1.1516

nmi meters

nmi miles

ounces grams

pounds kg

psi kg/cm2

100 ft km

100 ft miles

100 ft nmi

1853.2

1.1516

28.34953

0.4536

0.0703

3.048

1.894

1.645

APPENDIX B

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NAV-402AP-3

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OPERATION MANUAL
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APPENDIX C - ABBREVIATIONS

A

A Amperes
AC, ac Alternating Current
approx Approximate
AVG Average

B

BAT Battery
BRG Bearing

C

C Celsius or Centigrade
CAL Calibration
ccw Counterclockwise
cm Centimeter
COMM Communication
CTR Center
CW Continuous Wave
cw Clockwise

D

dB Decibel
dBm Decibel above

one Milliwatt

dBw Decibel relative to

one Watt

DDM Difference in Depth of

Modulation

E

EXT External

F

FCC Federal Communications

Commission
FM Frequency Modulation
FREQ Frequency
ft Feet

G

GEN Generate
G/S Glideslope

Ident Identification
ILS Instrument Landing System
IN Input
I/O Input/Output

kg Kilogram
kHz Kilohertz
kW Kilowatts

lbs. Pounds
LO Local Oscillator
LOC Localizer
LOC DDM Localizer Difference in

MKR Marker
MHz Megahertz
MOD Modulation
mV Millivolts
mW Milliwatts

NAV Navigation
nW Nanowatts

OUT Output

pW Picowatts
PWR Power

RF Radio Frequency

UUT Unit Under Test

I

K

L

Depth of Modulation

M

N

O

P

R

U

H

HF High Frequency
HI High
Hz Hertz

V

V Volt
VAC Volts Alternating Current
VAR Variable
Vdc Volts Direct Current
VHF Very High Frequency

VHF Omnidirectional Range

VOR
V

P-P Volts Peak-to-Peak

Vrms Volts Root-Mean-Square

APPENDIX C

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Sep 1/04

W

W Watts
w/o Without

X

XMTR Transmitter
XTL Crystal

µA Microamperes
µV Microvolts
µW Microwatts

OPERATION MANUAL
NAV-402AP-3

APPENDIX C

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OPERATION MANUAL
NAV-402AP-3

INDEX

90 Hz and 150 Hz Tones
Phase Relationships Table 1-3-1, p 10
Correspondence Chart (LOC) 1-2-3, p 12
Correspondence Chart (G/S) 1-2-3, p 12

Abbreviations App C
AC Power Requirements 1-2-1, p 2

Battery
Charging 1-2-1, p 1
Operation 1-2-1, p 1
Parameters 1-2-3, p 2
Recharging 1-2-1, p 2
Bench Operation 1-2-1, p 3
1-2-3, p 2

Capabilities, General Description and 1-1-1, p 1
CAUTION and WARNING Labels 1-2-1, p 1
Charging, Battery 1-2-1, p 1
Communication Operation (Receiver) 1-2-3, p 7
Communication Operation (Transmitter) 1-2-3, p 8
Complying with Instructions 1-2-1, p 1
Controls, Connectors and Indicators
Front Panel 1-2-2, p 3
Rear Panel 1-2-2, p 8
Correspondence Chart
90 Hz and 150 Hz Tones (LOC) 1-2-3, p 12
90 Hz and 150 Hz Tones (G/S) 1-2-3, p 12
Decibels, Volts and Watts 1-2-3, p 9
Counter Operation 1-2-3, p 2

Description 1-1-1, p 1

External Cleaning 1-2-1, p 3

FCC Requirements 1-2-1, p 2
Functional Capabilities 1-1-1, p 1
Fuse Ratings, Specified 1-2-1, p 2

General Description and Capabilities 1-1-1, p 1
General Operating Procedures 1-2-3, p 1
Glide Slope Operation 1-2-3, p 6
Grounding Power Cord 1-2-1, p 1

Indicators, Controls, Connectors and
Front Panel 1-2-2, p 3
Rear Panel 1-2-2, p 8
Installation 1-2-1, p 1
I/O Connectors
AC IN App A, p 1
COM XMTR IN App A, p 1
MOD IN/EXT FREQ CTR IN App A, p 1
NAV TONE OUT App A, p 1
POWER MON DEMOD App A, p 1
RF OUT App A, p 1
SIGNAL GEN DEMOD App A, p 1

Localizer Operation 1-2-3, p 5

Marker Operation 1-2-3, p 3
Metric/British Conversion Table App B

Operate LOC and G/S Simultaneously 1-2-3, p 2
Operation 1-2-1, p 1
Battery 1-2-1, p 1
Bench 1-2-1, p 3
1-2-3, p 2
CAUTIONS 1-2-3, p 1
Communication (Receiver) 1-2-3, p 7
Communication (Transmitter) 1-2-3, p 8
Counter 1-2-3, p 2
Glide Slope 1-2-3, p 6
Localizer 1-2-3, p 5
Marker 1-2-3, p 3
Ramp 1-2-3, p 1
Safety Precautions 1-2-1, p 1
VOR 1-2-3, p 4

Parameters, Battery 1-2-3, p 2
Power Cord, Grounding 1-2-1, p 1
Power Requirements, AC 1-2-1, p 2

Ramp Operation 1-2-3, p 1
Recharging, Battery 1-2-1, p 2
Repacking Procedure 1-4-1, p 13

Safety Precautions 1-2-1, p 1
Shipping Test Sets 1-4-1, p 1
Signals Simulated 1-2-3, p 1
Specifications 1-3-1, p 1
AC Power 1-3-1, p 8
Battery 1-3-1, p 8
Bearing Monitor 1-3-1, p 8
COM Mode 1-3-1, p 6
Environmental 1-3-1, p 8
External Frequency Counter 1-3-1, p 7
G/S Mode 1-3-1, p 5
LOC Mode 1-3-1, p 4
Marker Mode 1-3-1, p 2
Power Meter 1-3-1, p 7
RF Output 1-3-1, p 1
VOR Mode 1-3-1, p 3
Specified Fuse Ratings 1-2-1, p 2
Storing Test Sets 1-5-1, p 1

VOR Operation 1-2-3, p 4

WARNING Labels, CAUTION and 1-2-1, p 2

INDEX

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INDEX

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As we are always seeking to improve our products, the information in

this document gives only a general indication of the product capacity,

performance and suitability, none of which shall form part of any

contract. We reserve the right to make design changes without notice.

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