Honeywell KX165A Installation Manual

				WITHOUT
INSTALLATION MANUAL
			TO	CHANGE
		SUBJECT
KX 155A/165A
COMM/NAV SYSTEM
PRELIMINARY	-

MANUAL NUMBER 006-10542-0002

REVISION 2, APRIL 2000

NOTICE

				NOTICE
			CHANGE	WITHOUT
		WARNING
Prior to Export of this Document, review for export license requirement is needed.
		TO
		SUBJECT
		COPYRIGHT NOTICE
	-	©2000 Honeywell International Inc.
PRELIMINARY

Reproduction of this publication or any portion thereof by any means without the express written permission of Honeywell is prohibited. For further information contact the Manager, Technical Publications, Honeywell, One Technology Center, 23500 West 105th Street Olathe KS 66061 Telephone: [phone].

BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

SECTION I

GENERAL INFORMATION

1.1INTRODUCTION

This manual contains information relative to the physical, mechanical, and electrical characteris-

tics of the Bendix/King Silver Crown KX155A VHF COMM Transceiver/Navigation/VOR/LOC
Glideslope Receiver. Installation and operating procedures are also included.	NOTICE

Information relative to the maintenance, alignment, and procurement of replacement parts may be found in the KX155A Maintenance/Overhaul Manual, P/N 006-15542-XXXX.

1.2EQUIPMENT DESCRIPTION

			WITHOUT
The KX155A is a VHF NAV/COMM Transceiver which provides the following functions.
A.	Two-way voice communication within the frequency range of 118.00 MHz to
	136.975 MHz (760 Channels) in 25 kHz increments.
B.	Reception of navigation signals within the frequency range of 108.00 MHz to
		CHANGE
	117.95 MHz in 50 kHz increments (200 channels).
C.	Optional reception of glideslope signals within the frequency range of 329.15
	MHz to 335.00 MHz in 150 kHz increments (40 channels).
D.	High level speaker audio output plus limited audio intercom inputs and out-
	puts.
E.	Provides a count down timer.

The KX155A is a panel mounted unit. Connections to the unit are made through one 36 and one

			TO
50 pin Molex printed circuit board edge connector and three BNC coax connectors at the rear of
the unit.
Electrically, the KX155A consists of the following sections:
∙		SUBJECT
	COMM Transmitter
∙	COMM Receiver
∙	NAV Receiver
∙	Main Board
∙	Glideslope Receiver and Converter (Optional)
∙	Gas Discharge Display
∙	4 Ω Audio Amplifier

The KX155A is backward compatible with existing KX155 installations. See Section 2.3 Additional
	-
Installation Notes for details.
PRELIMINARY
10542I02.ZIPRCD		Page 1-1
Rev 2, Apr/2000

BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

1.3TECHNICAL CHARACTERISTICS

	Table 1-1			KX155A/KX165A Technical Specifications							NOTICE
	KX155A/KX165A GENERAL SPECIFICATIONS
ENVIRONMENTAL TSO COMPLI-					RTCA DO-160C, Eurocae ED-14C Env Cat (see Appendix
ANCE:					E)				WITHOUT
TEMPERATURE RANGE:					-20°C to +55°C with short time operation at +70°C.
					(Operational to -40°C)
ALTITUDE:					-15,000 feet to 50,000 feet
WEIGHT:
KX 155A					VERSIONS		CHANGE			Mtg Rack
								W IGHT
								(nominal)		w/hardware
					069-01032-0101			4.2 lbs (1.9 kg)		1.1 lbs (0.5 kg)
					069-01032-0201			3.7 lbs (1.7 kg)		1.1 lbs (0.5 kg)
						TO		WEIGHT		Mtg Rack
					VERSIONS
								(nominal)		w/hardware
KX 165A			SUBJECT					4.0 lbs (1.8 kg)		1.1 lbs (0.5 kg)
				069-01033-0101
				069-01033-0201				4.0 lbs (1.8 kg)		1.1 lbs (0.5 kg)
PHYSICAL DIMENSIONS
(NOMINAL) :
Width:		-			6.25 inches		(15.875 cm)
Height:					2.00 inches		(5.08 cm)
PRELIMINARY					10.16 inches (25.81 cm) to end of connector
Depth:
MOUNTING:					Panel mounted, no shock mounting required
POWER CONSUMPTION:
						RECEIVE			TRANSMIT
V	RSIONS:				TYP.		PEAK
Page 1-2										10542I02.ZIPRCD
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BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

069-01032-0101			0.8 A	2.2 A	6.0 A (MAX)
069-01032-0201			0.8 A	2.2 A	6.0 A (MAX)	NOTICE
069-01033-0101			0.6 A	0.7 A	4.0 A (MAX)
069-01033-0201			0.6 A	0.7 A	4.0 A (MAX)
				Class 4 & 6WITHOUT069-01033-0201)
NOTE: Peak currents occur only when installation is configured for the 4Ω audio output & both
COMM and NAV volumes are adjusted to full.
Specifications are at 25°C unless otherwise specified.
COMM TRANSCEIVER
TSO COMPLIANCE:
Transmit:			C37d (DO-186A, Class 4 - all flavors/
Receive:				CHANGE
			C38d (DO-186A, Class C & D - all flavors/
				Class C, D, & E 069-01033-0201)
APPLICABLE DOCUMENTS:			RTCA DO-186 , DO-160C,
			*EUROCAE ED-23B, ED-14C
DUTY CYCLE:			10%, 4.5 minutes receive, 0.5 minutes transmit
			TO
FREQUENCY RANGE:			118.000 MHz to 136.975 MHz
COMM TRANSMITTER		SUBJECT
POWER OUTPUT:			10 Watts minimum
			10 Watts typical (KX 155A pre-Mod 5)
	-
PRELIMINARY			70% minimum modulation capability with less than 15%
MODULATION:
			distortion. Audio leveling circuit used.
SIDETONE OUTPUT:			Adjustable up to 100 mW ( 5.1 mW Mod 1 w/o Mod 6) into
			500 Ω headphones
MICROPHONE:			Standard carbon or dynamic mic containing transistorized
			pre-amp. (Must provide 100 mVrms into 100 Ω load.)
10542I02.ZIPRCD						Page 1-3
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	BENDIX/KING
	KX 155A/165A
	COMM/NAV SYSTEM
HARMONIC CONTENT:	-56 dBc, minimum. Typically greater than -60 dBc
HIGH TEMPERATURE PROTEC-	NOTICE
	If the transmitter and modulator circuits become hot
TION:	enough to potentially damage any components in the
	transceiver, a protection circuit will automatically reduce
	the transmitter power consumption and output power.
TRANSMITTER TIME OUT:	WITHOUT
	If MIC key is enabled for greater than 30 ( Nominal) sec-
	onds, the transmitter will shut down. The transmitter is re-
	set upon release of MIC key.

			TO	CHANGE
		SUBJECT
PRELIMINARY	-

Page 1-4	10542I02.ZIPRCD
	Rev 2, Apr/2000

		BENDIX/KING
		KX 155A/165A
		COMM/NAV SYSTEM
COMM RECEIVER
Class C & D operating modes			6 dB bandwidth ±8.0 kHz, minimumNOTICE
RECEIVER SENSITIVITY:			-107 dBm (2μV hard) or less for 6 dB S + N/N with
			1,000 Hz tone modulated 30 %.
RECEIVER SELECTIVITY:
			WITHOUT
			60 dB bandwidth ±22.0 kHz, maximum
Class E operating mode			6 dB bandwidth ±2.778 kHz, minimum
			60 dB bandwidth ±7.37 kHz, maximum
RECEIVER AUDIO OUTPUT:			100 mW into 500 s minimum.
AGC CHARACTERISTICS:			From -93 dBm to -33 dBm audio output will not
			vary more than 3 dB. Active from no signal to +3
			dBm.
SQUELCH:			Automatic squelch (internally adjustable carrier to
			noise setting) with manual disable and carrier
			TO
			squelchCHANGEoverride. Both squelch adjustments are
			externally accessible. The automatic squelch has
			a typical factory setting of -106 dBm.
		SUBJECT	At least 60 dB down
OUT OF BAND SPURIOUS RESPONSE,
INTERMODULATION AND
DESENSITIZATION
NAV RECEIVER
TSO COMPLIANCE:			C36e (DO-195, Class A) Localizer
			C40c (DO-196) VOR
	-
PRELIMINARY			RTCA DO-195, RTCA DO-196, RTCA DO-160C
APPLICABLE DOCUMENTS:
			*EUROCAE ED-22B, & ED-46B, ED-14C
FREQUENCY R NGE:			108.00 MHz to 117.95 MHz in 50 kHz increments
OUT OF BAND SPURIOUS RESPONSES,			At least 60 dB down
INTERMODULATION AND			Meets ICAO FM Immunity requirements consis-
DESENSITIZATION:			tent with RTCA DO-195,196 and
			*Eurocae ED-22B,46B
* Pre-Mod 5 units may not meet all applicable			EUROCAE requirements.
10542I02.ZIPRCD			Page 1-5
Rev 2, Apr/2000

			BENDIX/KING
			KX 155A/165A
		COMM/NAV SYSTEM
VOR COURSE ACCURACY:				Two sigma limit 3° as specified in RTCA DO-196
								NOTICE
				when used with indicators per section 1.7.3 of this
				installation manual.
				Three sigma limit 2.7° as specified in *Eurocae
				ED-22B when used with indicators per section
				1.7.3 of this Installation manual.
AUDIO OUTPUT:						WITHOUT
				With a 1 kHz tone 30% modulation at least 100
				mW output into 500 Ω loads
IDENT/VOICE:				With 100 mV input, 30% modulation at 1020 Hz,
				the ident/voice tone ratio shall not be less than 15
				dB.
LOC CENTERING ERROR:					CHANGE		μA as specified in RTCA DO-
				Two sigma limit		±9.9
				195 and *Eurocae ED-46B when used with indica-
				tors per section 1.7.2 of this installation manual.
GLIDESLOPE RECEIVER
TSO COMPLIANCE:				C34e (DO-192)
APPLICABLE DOCUMENTS:				TO
				RTCA DO-192, DO-160C
				*EUROCAE ED-47B, ED-14C
CENTERING ACCURACY:		SUBJECT		Two sigma limit		±10μA as specified in RTCA DO-
				192 and *Eurocae ED-47B when used with indica-
				tors per section 1.7.1 of this Installation Manual.
DEFLECTION CHARACTERISTICS:				A difference in depth of modulation of 0.091 ddm,
				or 2 dB, shall produce a deflection of
	-			78 ±3μA (typical). The deviation under opposite
				polarity shall be 78 ±3 μA (typical).
PRELIMINARY				329.15 MHz to 335.00 MHz 40 channels (150 kHz
FREQUENCY RANGE:
				spacing).
SPURIOUS RESPONSE:				All responses in the range from 90 kHz to 1500
				MHz at least 60 dB below center frequency re-
				sponse, excluding the range from 328.60 MHz to
				335.40 MHz.
* Pre-Mod 5 units may not meet all applicable				EUROCAE requirements.
Page 1-6							10542I02.ZIPRCD
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BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

VOR/LOC CONVERTER (KX 165A ONLY)

TSO COMPLIANCE:

sion track selector (2° max. error). NOTICE

C40c (DO-196)

C36d (DO-195, Class A)

ACCURACY - VOR:

Typical bearing error of less than 0.5° with preci-

- LOC:

WITHOUT

Typical centering error of less than 3μA (7μA max

error).

COURSE WIDTH:

VOR:

10° ±1° externally adjustable

LOC:

CHANGE

90 μA ±5μA for ddm 0f 0.093 ddm of 4 dB

INPUT IMPEDANCE:

60 kΩ for 0.5 Vrms input (VOR mode)

LOADS:

Five 1000Ω deviation loads, three 1000Ω flag

loads and three 200Ω from-to loads

TO

SUBJECT

AUDIO AMP (KX 155A ONLY)

4 Ω Output:

8 watts nominal

Inputs:

Three 500 Ω Auxiliary Inputs

* Pre-Mod 5 units may not meet all applicable

EUROCAE requirements.

1.4

UNITS AND ACCESSORIES SUPPLIED

1.4.1

-

KX 155A/KX 165A

PRELIMINARY

The Bendix/King KX 155A/KX 165A Transceivers are available in the following configurations.

Table 1-2 KX 155A Configurations Available

Part Number

28V

Glideslope Receiver

069-01032-0101

X

X

069-01032-0201

X

10542I02.ZIPRCD

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BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

Table 1-3 KX 165A Configurations Available			NOTICE
Part Number	28V	8.33 kHz
069-01033-0101	X
069-01033-0201	X	X

1.4.2INSTALLATION KIT

Bendix/King KX 155A/KX 165A Installation Kit (P/N 050-03378-0000/0001),WITHOUTlisted in Table 1-4

contains the following parts: 0000 for units with glideslope and 0001 for units without glideslope.

			TO	CHANGE
		SUBJECT
PRELIMINARY	-

Page 1-8	10542I02.ZIPRCD
	Rev 2, Apr/2000

BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

Table 1-4 Installation Kit (050-03378-XXXX)

	Part Number			Description		0000	0001
	030-00101-0002			PANEL MOUNT PLUG		3	2
							NOTICE
	030-01094-0060			CONN 18 POS		1	1
	030-01094-0088			CONN HOUSING (2 X 2.50 ) W		1	1
				POLARIZING KEY
	030-01107-0078			CONNECTOR TERM 78T		1	0
	030-01107-0068			CONNECTOR TERM 68T		0	1
	047-05959-0002			STRAIN RELIEF W/H		2	2
	047-05960-0001			STRAIN RELIEF W/F		2	2
						WITHOUT
	073-00431-0007			CONN MTG PLATE COMPLETE		1	1
	089-02051-0024			NUT, SPEED, U, 6-32		4	4
	089-02353-0001			NUT, CLIP, 6-32		6	6
	089-05878-0005			SCR, PHP, 4-40 X 5/16		2	2
	089-05878-0012			SCR, PHP, 4-40 X 3/4		4	4
					CHANGE
	089-05907-0006			SCR, PHP, 6-32 X 3/8		4	4
	089-06012-0008			SCR, FHP, 6-32 X 1/2		6	6
				TO
	090-00019-0007			RING, RTNR, .438		3	2
1.5		ACCESSORIES		REQUIRED BUT NOT SUPPLIED
A.		Broad band 50 Ω vertically polarized Communications antenna with coaxial cable.
B.		Headphones: 500 Ωs nominal impedance.
C.		Microphone: Low impedance carbon or dynamic with transistorized pre-amp.
D.		Broad band 50SUBJECTΩ horizontally polarized Navigation antenna with coaxial cable.
E.			-
		Broad band 50 Ω horizontally polarized Glideslope antenna with coaxial cable or
		low loss splitter used with the navigation antenna.
F.		VOR, LOC, Glideslope Indicators. See section 1.7.6 for TSO’d systems.
G.		n some installations it may be desirable to allow the Glideslope Receiver to oper-
		ate using the aircraft’s navigation antenna. In other installations it may be desirable
		to operate two NAV/LOC Receivers or two GS Receivers using a common anten-
		na. Low-loss couplers are available to allow such operation.
		An overall degradation in sensitivity will be realized due to the insertion loss of the
		coupler. The installer must verify that acceptable sensitivity and proper system
PRELIMINARY
10542I02.ZIPRCD							Page 1-9
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BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

		performance is realized in a system that utilizes a coupler. A minimum of 20 dB of
					NOTICE
		GS receiver-to-receiver isolation is required in dual installations employing a KX
		155A/KX 165A GS receiver. Examples of some common couplers are listed below.
		Contact the coupler manufacturer for specifications for the couplers listed.
			Table 1-5 Common Couplers
	Coupler to allow one			Dayton-Granger	WITHOUT
					Dorne Margolin
	antenna to operate:			[phone]	[phone]
	One Nav and one GS			GSNC 20-05	H22-1
	Two Navs			DRC 20-04 or 14830	H21-1
	Two Glideslopes			DGSC 20-02 or 16009	H24-1
	Two Navs and two GSs			DOC 20-06 or 16010	H69-1
1.6		LICENSE REQUIREMENTS

The KX 155A/KX 165A NAV/COMM transceiver is to be utilized in an aircraft which already has a station license, no additional radio station license is required.

If the transceiver is to be used as a ground station then a Ground Station Authorization is required. Call the Federal Communications Commission (FCC) at 1-800-322-1117, or use the included FCC

Form 207, to order FCC Form 406, “Application for Ground Station Authorization in the Aviation
Services”.	CHANGE

You may also use the FCC’s FAX form serviceTOby calling 1-202-418-0177.

This equipment has been accepted by the FCC and entered into their list of Type Accepted Equipment as AlliedSignal Avionics, Inc. Model KX 155A/KX 165A.

For more information call the FCC Hot line at 1-800-322-1117, press “2" for assistance with radio service, then press “1" for ship and aircraft licensing information. To get information from the internet, visit the FCC web page at http://www.fcc.gov.

The KX 155A/KX 165A owner/operator accepts all responsibility for obtaining the proper licensing before using the transmitter.

	CAUTION
-	SUBJECT
THE VHF TRANSMITTER IN THIS EQUIPMENT IS
GUA ANTEED TO MEET FEDERAL COMMUNICATIONS

COMMISSION ACCEPTANCE OVER THE OPERATING

TEMPERATURE RANGE ONLY WHEN A BENDIX/KING

CRYSTAL IS USED IN THE STABILIZED MASTER OSCIL-

LATOR.

USE OF OTHER THAN A BENDIX/KING CRYSTAL IS

CONSIDERED AN UNAUTHORIZED	MODIFICATION,
AND WILL VOID THE WARRANTY.
PRELIMINARY
Page 1-10	10542I02.ZIPRCD
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BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

An Aircraft Radio Station License is no longer required for this equipment for domestic operation.
	NOTICE
For international travel, forms (FCC Form 404, New Aircraft Station License, or FCC Form 405A,
Renewal of Aircraft Station License) can be obtained from your nearest FCC Field Office.
1.7	REQUIREMENTS FOR TSO’D VOR/ILS GLIDESLOPE SYS EMS

The additional units used in conjunction with the KX 155A/KX 165A must meet the specifications listed below to comprise a completely TSO’d navigation system.

1.7.1			WITHOUT
	KX 155A/KX 165A GLIDESLOPE INDICATOR REQUIREMEN S
A.	The indicator shall meet all applicable requirements of TSO C34e.
B.	Centering current to be 0 ±6.6 μA with a 95% probability under all environ-
	mental conditions listed in RTCA Paper DO-192, Minimum Performance
	Standards -- Airborne ILS Glideslope Receiving Equipment, Paragraph 2.1,
	sub-paragraph B, Centering Accuracy.
C.	The course deviation pointer shall visibly deflect at least ±5/8 inch along its
F.	scale when the input current is changed from zero to ±150 μA.
	The input impedance shall be 1 K Ωs ±CHANGE5% for both the deviation indicator and
D.	Deflection linearity over the deflection range from zero to 150 μA shall be with-
	in 10% of being proportional to the input current. Additionally, as the current
	is increased beyond that producing full scale deflection to a value of ±685.7
	μA, the indicator deflection shall not decrease.
E.	When the input current is abruptly changed from any value from zero to ±150
	μA, the pointer shall reach 67% of its ultimate deflection within 2 seconds and
	pointer overshoot shall not exceed 5%.
	warning signal.	TO
G.	A warning signal input current of 150 μA or less shall produce a fully visible
	warning flag. A warning signal input current of 260 μA or greater shall produce
	a fully concealed warning flag.
1.7.2	KX 155A LOCALIZER CONVERTER AND INDICATOR REQUIREMENTS
A.	The indicator shall meet all applicable requirements of C36e (RTCA DO-195
	Class A) or C36d (RTCA DO-131 Class D).
B.	Centering current to be 0 ±6.0 μA with a 95% probability under all environ-
	mental conditions listed in RTCA Paper DO-195, Minimum Performance
	Standards -- AirborneSUBJECTILS Localizer Receiving Equipment, Paragraph 2.1,
	sub-paragraph-	b, Centering Accuracy.
PRELIMINARY				±3/8 inch along its
C.	The course deviation pointer shall visibly deflect at least
	scale when the input current is changed from zero to ±90 μA.
D.	Deflection linearity over the deflection range from zero to ±90 μA shall be with-
	in 10% of being proportional to the difference in depth of modulation of the 90
	and 150 Hz signals, or the deflection shall be within 5% of standard deflection
	(±90 μA) of being proportional to the difference in depth of modulation, which-
	ever is greater. Additionally, as the difference in depth of modulation is in-
	creased beyond that producing full scale deflection (±150 μA) to a value of 0.4
	ddm, the course deviation pointer deflection shall not decrease.
10542I02.ZIPRCD				Page 1-11
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		BENDIX/KING
		KX 155A/165A
		COMM/NAV SYSTEM
E.	When the input current is abruptly changed from zero to ±150 μA, the pointer
						NOTICE
	shall reach 67% of its ultimate deflection within 2 seconds and pointer over-
	shoot shall not exceed 5%.
F.	The input impedance of the indicator for both the deviation indicator and warn-
	ing signal shall be 1 KΩ ±5%.
G.	A warning signal input current of 125 μA or less shall produce a fully visible
	warning flag. A warning signal input current of 260 μA or greater shall pro-
	duce a fully concealed warning flag.				WITHOUT
1.7.3
	KX 155A VOR CONVERTER AND INDICATOR REQUIREMENTS
A.	The indicator shall meet all applicable requirements of TSO C40c.
B.	The bearing error shall be less than 2.5° with a 95% probability under all en-
	vironmental conditions listed in RTCA Paper DO-196, Minimum Performance
	Standards -- Airborne VOR Receiving Equipment, Paragraph 2.1, sub-para-
	graph 2.1.2, Bearing Accuracy.
				NOTE
				CHANGE
	For older converters/indicators, the Bearing Error
	shall be less than 2.7° with a 95% probability under
	all environmental conditions listed in RTCA Paper
	DO-114, MINIMUM PERFORMANCE STANDARDS
	-- AIRBORNE VOR RECEIVING EQUIPMENT,
	Paragraph 2.1, Sub-paragraph B, BEARING ACCU-
	RACY.		TO
C.	The course deviation pointer shall visibly deflect at least ±1/2 inch (for DO-
	SUBJECT
	196) or 3/8 inch (for DO-114) along its scale when the input current is
	changed from zero to ±150 μA.
D.	Deflection Linearity
	The deflection shall be proportional to the change in phase between the two
	components of the standard VOR test signal, within 20% of the deflection pro-
	duced by a 10° (±150 μA) change in phase. This requirement shall be met at
	all deflections produced when the phase difference is varied from plus 10° to
	minus 10° of that producing an "on course" indication.
	The pointer deflection-	shall not decrease as the phase difference is increased
PRELIMINARY
	from producing an "on course" indication to that producing an indication which
	is equivalent to ±80° from "on course".
E.	Deflection Response
	When the difference in phase between the two components of an "on course"
	standard VOR test signal is abruptly changed, the pointer shall reach 70% of
	its ultimate position within 3 seconds and the pointer overshoot shall not ex-
	ceed 20%.
F.	The input impedance of the indicator for both the bearing error and warning
	signal shall be 1 KΩ ±5%.
Page 1-12						10542I02.ZIPRCD
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	BENDIX/KING
	KX 155A/165A
	COMM/NAV SYSTEM
G.	A warning signal input current of 125 μA or less shall produce a fully visible
	warning flag. A warning signal input current of 266 μA or greater shall pro-
	duce a fully concealed warning flag.
H.	The input impedance of the TO/FROM indicator shall be 200 Ωs ±200 μA
	sensitivity.	NOTICE
1.7.4	KX 165A VOR INDICATOR REQUIREMENTS
A.	The indicator shall meet all applicable requirements of TSO C40c.
B.
	The bearing error shall be less than 1.9° with 95% probability under all environmen-
	conditions listed in RTCA Paper DO-114, MINIMUMWITHOUT

tal conditions listed in RTCA Paper DO-196, Minimum Performance Standards -- Airborne VOR Receiving Equipment, Paragraph 2.1, sub-paragraph 2.2.1, Bearing Accuracy.

NOTE

For older indicators, the Bearing Error shall be less than 2.7° with a 95% probability under all environmental

PERFORMANCE STANDARDS -- AIRBORNE VOR RECEIVING EQUIPMENT, Paragraph 2.1, Subparagraph B, BEARING ACCURACY.

C.The course deviation pointer shall visibly deflect at least ≈1/2 inch (for DO-196) 3/

8 inch (for DO-114) along its scale when the input current is changed from zero to ±150 μA.

D.Deflection Linearity CHANGE

			TO
	The deflection shall be proportional to the change in phase between the two com-
	ponents of the standard VOR test signal, within 20% of the deflection produced by
	a 10° (±150 μA) change in phase. This requirement shall be met at all deflections
		SUBJECT
	produced when the phase difference is varied from plus 10° to minus 10° of that
	producing an “on course” indication.
	The pointer deflection shall not decrease as the phase difference is increased from
	the producing an “on course” indication to that producing an indication which is
	equivalent to ±80° from “on course”.
E.	Deflection Response
	When the difference in phase between the two components of an “on course” stan-
	dard VOR test signal is abruptly changed, the pointer shall reach 70% of its ultimate
	-
	position within 3 seconds and the pointer overshoot shall not exceed 20%.

F.The input impedance of the indicator for both the bearing error and warning signal shall be 1 KΩ ±5%.

G.A warning signal input current of 50 μA or less shall produce a fully visible warning

flag. warning signal input current of 350 μA or greater shall produce a fully concealed warning flag.

H.The input impedance of the TO/FROM indicator shall be 200 Ω ±200 μA sensitivity.

PRELIMINARY

10542I02.ZIPRCD	Page 1-13
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			BENDIX/KING
			KX 155A/165A
			COMM/NAV SYSTEM				NOTICE
	1.7.5	KX 165A LOCALIZER INDICATOR REQUIREMENTS
	A.	The indicator shall meet all applicable requirements of C36e.
	B.	The localizer centering current to be 0 ±3.2 μA with a 95% probability under
		all environmental conditions listed in RTCA DO-195, Minimum Performance
		Standards -- Airborne ILS Localizer Receiving Equipment, Paragraph 2.2.1,
		sub-paragraph B, Centering Accuracy.				WITHOUT
	C.
		The course deviation pointer shall visibly deflect at least ±3/8 inch along its
		scale when the input current is changed from zero to ±90 μA.
	D.	Deflection linearity over the range from zero to ±90 μA shall be within 10% of
		being proportional to the difference in depth of modulation of the 90 and 150
		Hz signals, or the deflection shall be within 5% of standard deflection (±90 μA)
		of being proportional to the difference in depth of modulation, whichever is
		greater.
		Additionally, as the difference in depth of modulation is increased beyond that
					CHANGE
		producing full scale deflection (±150 μA) to a value of 0.4 ddm, the course de-
		viation pointer deflection shall not decrease.
	E.	When the input current is abruptly changed from zero to ±150 μA, the pointer
		shall reach 67% of its ultimate deflection within 2 seconds and pointer over-
		shoot shall not exceed 5%.
	F.	The input impedance of the indicator for both the deviation indicator and warn-
		ing signal shall be 1 KΩ ±5%.
	G.	A warning signal input current of 50 μA or less shall produce a fully visible
				TO		μA or greater shall pro-
		warning flag. A warning signal input current of 350
		duce a fully concealed warning flag.
	1.7.6	5. KN 72, KI 206SUBJECT
		FULLY TSO’D SYSTEMS
							re-
	PRELIMINARY		-
		6. KN 72, KI 525A
		7. KN 72, KPI 552
		8. KN 72, KPI 553
		9. KN 72, KI 202
	Page 1-14						10542I02.ZIPRCD
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BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

SECTION II

INSTALLATION

2.1GENERAL

This section contains suggestions and factors to consider before installing the KX 155A/KX 165A. Close adherence to these suggestions will assure a more satisfactory performance from the

equipment.

NOTICE

Exercise extreme care when unpacking the unit. Make a visual inspectionWITHOUTof the unit for evidence of damage incurred during shipment. If a claim for a damage is to be made, save the shipping

The conditions and tests required for TSO approval of this article are minimum performance standards. It is the responsibility of those desiring to install this article either on or within a specific type or class of aircraft to determine that the aircraft installation conditions are within TSO standards. The article may be installed only if further evaluation by the applicant documents an acceptable installation and is approved by the Administrator.

2.2 UNPACKING AND INSPECTING EQUIPMENT

container to substantiate the claim. When all equipment is removed, place all packing materials in the shipping container for use in unit storage or reshipment.

2.3 EQUIPMENT INSTALLATION

The KX 155A/KX 165A installation will conform to standards designated by the customer, installing agency and existing conditions as to the unit location and type of installation. However, the following suggestions should be considered before installing your KX 155A/KX 165A. The install-

ing agency will supply and fabricate all external cables. The connectors required are supplied by
			CHANGE
AlliedSignal. Interconnect diagrams are Figures 2-12 through 2-16.
	NOTE	TO
2.3.1	AVIONICS COOLING REQUIREMENTS FOR PANEL MOUNTED EQUIPMENT
	SUBJECT			max-
consume much less electrical-		energy, the watts per cubic inch dissipated within avionics units re-

mainsPRELIMINARYmuch the same due to high density packaging techniques. Consequently, the importance of providing avionics stack cooling is still with us.

Forced air cooling is required for the KX 155A/KX 165A. Forced air must be provided to the KX 155A/KX 165A through the air inlet port located on the back of the unit. Forced air must be supplied by a source capable of delivering a minimum air flow of 3.5 CFM to the unit under the static pressure conditions that will exist at the unit’s air inlet port (typically, not more than .032 psi relative to ambient pressure). In order to maintain frequency stability per TSO specifications, the blower’s inlet air temperature must not exceed 55° C. However, in order to provide optimum equipment reliability, it is strongly recommended that inlet air temperature not exceed 35° C.

10542I02.ZIPRCD	Page 2-1
Rev 2, Apr/2000

BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

Recommendations on stack cooling are contained in AlliedSignal Installation Bulletin #55. Failure to provide stack cooling will certainly lead to increased avionics maintenance costs and may void the AlliedSignal warranty.

2.3.2		MOUNTING RACK INSTALLATION
A.	The KX 155A/KX 165A is mounted rigidly in the aircraft panel. Select a posi-
	tion in the panel that is not too close to any high external heat source. Re-
	member to allow adequate space for installation of cables and connectors.
								NOTICE
	Avoid sharp bends and placing the cables near aircraft control cables.
B.	Refer to Figure 2-10 for the KX 155A/KX 165A mounting dimensions. Mark
	and drill the mounting holes.
C.	Secure the mounting rack to the instrument panel per Figure 2-11. The rear
	mounting bosses should be attached to the aircraft by means of support
	brackets.
2.3.3		ANTENNA INSTALLATION
A.	Conventional 50 ohm horizontally polarized NAV Glideslope and vertically po-
							WITHOUT
	larized COMM antennas are required with the KX 155A/KX 165A. Vertically
	bent whip antennas are not recommended. Wideband COMM antennas pro-
	vide efficient operation over the COMM band. Antennas should be installed
	per manufacturer’s recommendations. Additional recommendations are as
	follows:
	1.	COMM Antenna
		a.	Mount antenna on flat metal surface or install a ground plane at
			least 18 inches square.				CHANGE
		b.	The antenna should be well removed from any projections and the
			engine(s) and propeller.
	2.					TO
		Navigation Antennae (VOR/LOC & Glideslope)
		a.	The location should be well removed from other antennas, projec-
			tions and engine(s). It should have a clear line of sight area if pos-
			sible.
		b.	The antenna must be mounted symmetrically with the centerline of
			the aircraft.
		c.	Avoid running other coaxial and wires near the NAV antenna cable.
B.	The antenna connectors on the KX 155A/KX 165A are identified on the rear
	die casting.			-	SUBJECT
						NOTE
		With KX 155A/KX 165A viewed from the front, the NAV an-
		tenna connector is on the right and the COMM antenna con-
		nector is on the left. This means that the NAV Frequency
		Selector and NAV Antenna are on the same side of the ra-
		dio. The COMM Frequency Selector and COMM Antenna
		Connector are also on the same side of the radio. The
		Glideslope Antenna Connector is right above the NAV An-
		tenna Connector.
PRELIMINARY
Page 2-2							10542I02.ZIPRCD
								Rev 2, Apr/2000

BENDIX/KING

KX 155A/165A

COMM/NAV SYSTEM

2.3.4CABLE HARNESS AND CONNECTOR ASSEMBLY

	2.	Open the Molex hand crimper HT 1921 with the engraved sideNOTICEtoward
The KX 155A/KX 165A uses a special connector that mates directly with the printed circuit board
inside the unit. Assembly of the connector is as follows:
A.	Contact Terminal Assembly using Molex Crimper (Figure 2-1 through 2-6)
	1.	Strip each wire 5/32" for contact terminal (Part Number 030-01107-
		XXXX). (The last two digits of the contact terminal part number indicates
		the number of terminals required).
						WITHOUT
		the operator. Place the conductor tab section of a contact terminal on
		Anvil B with the contact portion facing away from the operator. Close the
		crimper slightly until the contact tabs touch the female jaw.
	3.	Insert the stripped conductor until the insulation is even with the side of
		the crimper facing the operator. Crimp the conductor tabs by squeezing
		the handles together until the jaws are fully closed or a sufficient crimp
		is obtained.
	4.	Move the lead to Anvil A.			Place the insulating tab section on Anvil A.
		be felt or heard.				CHANGE
		Crimp again until the jaws are fully closed or a sufficient crimp is ob-
		tained.
B.	Contact Insertion into Molex Connector Housing
	1.	After the contact terminals have been installed on the wiring harness, the
		contact terminals can be inserted into the proper location in the connec-
		tor housing (P/N 030-01094-00XX). The terminal cannot be inserted up-
		side down. Be sure to push the terminal all the way in, until a click can
	2.				TO
		The self locking feature can be tested by gently pulling on the wire.
C.	Location of Polarizing Key in Housing
	1.			SUBJECT
		Prior to insertion of connector into rear of unit, check polarizing key po-
		sition between contacts 3 and 4 for P155A1/P165A2 & between contacts
		A & B and T & V of P155A1/P165A2.
	2.	Refer to Figure 2-11 to check correct position of polarizing key.
D.	Extraction of Contact from Molex Connector
	1.	Slip the flat narrow blade of a Molex contact ejector tool, HT-1884 (P/N
		005-02012-0011), under the contact on the mating side of the connector.
		By turning the connector upside down one can see the blade slide into
		the stop.	-
PRELIMINARY
	2.	When the ejector is slid into place, the retaining tab of the contact is
		raised, allowing the contact to be removed by pulling moderately on the
		lead.
	3.	Neither the contact or position is damaged by removing a contact; how-
		ever, the contact should be checked visually before reinstalling in con-
		nector to be certain that retaining tab "A" extends as shown (see Figure
		2-1).
E.	Coax Connector
	Refer to Figure 2-9 for the details for mounting the right angle coaxial BNC
	connector to the coax cable. Install the connector into the mounting rack.
10542I02.ZIPRCD						Page 2-3
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		BENDIX/KING
		KX 155A/165A
		COMM/NAV SYSTEM
2.3.5	KX 155A/KX 165A INSTALLATION			NOTICE
		CAUTION
	SEE PARAGRAPH 2.3.1 FOR COOLING
		REQUIREMENTS.	WITHOUT
A.
	Looking at the top of the unit, make sure the front lobe of the holddown device is in
	a vertical position.
B.	Slide the unit into the mounting rack until the front lobe touches the mounting rack.
C.	Insert a 3/32" Allen wrench through the hole in the front panel to engage the locking
	screw. Turn clockwise until the rear lobe engages the mounting rack. Continue
	turning until the unit is secure in the mounting rack. Do not overtighten.
D.	For removal, turn the locking screw counterclockwise using a 3/32" Allen wrench
	until the unit disengages from the mounting rack. Pull the unit out of the mounting
		CHANGE
	rack by pulling on the metal tabs located behind the front panel on each side of the
	unit.
2.3.6	ELECTRICAL INSTALLATION NOTES
RETROFIT
		CAUTION
	Damage may occur in retrofit applications if the old
	installation used COMMTOREMOTE TRANSFER or
	to groundSUBJECTthrough the remote transfer switch to the
	NAV REMOTE TRANSFER. If a COMREMOTE
	TRANSFER wire was connected to pin P or R, it
	must be moved to P155A/165A1-23. If a NAV RE-
	MOTE TRANSFER wire was connected to pin 13 or
	14, it must be removed. The KX 155A/KX 165A
	does not support NAV REMOTE TRANSFER. Fail-
	ure to remove the wire(s) will result in a direct short
	-
PRELIMINARY
	NAV/COM circuit breaker when the switch is

pressed. The circuit breaker and switch will be damaged.

EFIS 40/50

The KX 165A may be interfaced to the Bendix/King EFIS 40/50 by using the KX 165A’s OBI CLOCK, OBI DATA, and OBI SYNC outputs for VOR bearing (RMI needle) and deviation, the COURSE DEVIATION +RIGHT and +LEFT for localizer deviation, and the GLIDESLOPE DEVIATION +UP and +DOWN for glideslope deviation. In order to use the KX 165A as a navigation source, the EFIS 40/50 must be configured for KNS 81 as VOR/LOC 1 or 2. Additionally, the KX 165A must be configured for Type II OBI data (see paragraph 3.1.4).

Page 2-4	10542I02.ZIPRCD
	Rev 2, Apr/2000