Air Traffic Control HME 46-3 HMD 46-3 -...

SA 070401

Subj

ect

to a

lter

atio

ns

Air Traffic Control

HME 46-3 HMD 46-3

Service manual

Revision 02/2008

Product variants500857 HME 46-3500467 HME 46-3-6500874 HME 46-3PTT-M500468 HME 46-3PTT-6500469 HME 46-3PTT-L502172 HME 46-3PTT-LA500851 HME 46-ATC502484 HME 46-31

500849 HMD 46-3500466 HMD 46-3-6500873 HMD 46-3PTT-M502483 HMD 46-31 502594 HMD 46-3(5)

Cable variants500836 -6502360 -7502365 -L500844 -PTT-6502418 -PTT-6-1500845 -PTT-L502187 -PTT-LA500930 -D-3PTT-M500931 -E-3PTT-M

Short descriptionThis headset features dynamic, open headphones. The noise-compensating microphone ensures excellent speech transmission even in noisy environments. Designed for air traffic control, intercom systems and other communication purposes.

Features • ActiveGard™ (not HME 46-31 and HMD 46-31)• “Flip-away“ earcup• Automatic two-piece headband• Flexible microphone boom can be worn on either left or right-hand side• Single-sided cable• Comfortable wearing earpads• PTT button integrated in the cable (HME/HMD 46-3PTT-x only)

Sennheiser electronic GmbH & Co. KG • 30900 Wedemark, Germany Phone: +49 (5130) 600 0 • Fax: +49 (5130) 600 300 1/25

Safety requirementsObserve safety regulations.

Observe ESD instructions while handling electrostatically endangered components.

Only skilled persons are allowed to alter and repair. For repairs and exchanges only approved components according to the current spare parts list are allowed.

For safety and certification reasons it is forbidden to alter the product without authorization. Otherwise, the person who has altered the product is liable for any consequential damage.

repairs/exchanges The following instructions for overhaul and testing must be followed. In case of unusual problems please contact your Sennheiser distributor.

HME 46-3, HMD 46-3 2/25 02/2008

HME 46-3, HMD 46-3 02/2008 3/25

Contents1 Outline dimension ..........................................................................................5

2 Technical Data.................................................................................................62.1 Headphones........................................................................................................... 62.2 Microphone of HMD 46-3.................................................................................... 62.3 Microphone of HMD 46-3(5) .............................................................................. 62.4 Microphone of HME 46-3 (with preamplifier) ................................................ 62.5 General data .......................................................................................................... 6

3 Disassembly ....................................................................................................73.1 Removal of the cable ........................................................................................... 73.2 Disassembly of the cap........................................................................................ 73.3 Disassembly of the cable .................................................................................... 73.4 Disassembly of the microphone arm................................................................ 8

4 Assembly .........................................................................................................94.1 Assembly of the cap............................................................................................. 94.2 Assembly of the -PTT-x cable............................................................................. 94.3 Assembly of the cable to the headset............................................................104.4 Assembly of the microphone arm................................................................... 10

5 Testing and fault isolation......................................................................... 115.1 Tools and test equipment.................................................................................115.2 Operational test of the audio system............................................................. 115.2.1 Audio testing the headset with cable ............................................................115.2.2 Operational testing of the pre-polarized microphone

at the headset with cable (HME 46-3-x only) ..............................................115.2.3 Testing of the dynamic microphone

at the headset with cable (HMD 46-3-x only).............................................. 125.2.4 Operational testing of the headset cables ....................................................125.2.5 Audio testing of the headset without cable ................................................. 125.2.6 Testing of the ActiveGard™ of the PCB (not HMD/E 46-31)...................... 13

6 Wiring diagrams .......................................................................................... 156.1 Wiring diagram for cable -E-3PTT-M, -D-3PTT-M......................................... 156.2 Wiring diagram for cable -PTT-L...................................................................... 166.3 Wiring diagram for cable -PTT-6 ..................................................................... 176.4 Wiring diagram for cable -PTT-LA................................................................... 186.5 Printed circuit boards ........................................................................................ 196.6 Block diagram......................................................................................................20

7 Exploded views with spare part lists ........................................................ 217.1 Exploded view HME 46-3 / HMD 46-3............................................................217.2 Spare part list for HME 46.................................................................................227.3 Spare part list for HMD 46 ................................................................................ 227.4 Exploded view of the system module ............................................................237.5 Spare part list of the system module

not microphone side (525764) ....................................................................... 237.6 Spare part list of the system module

microphone side (525763)............................................................................... 237.7 Exploded view of the cap, microphone side ..................................................247.8 Spare part list of the cap, microphone side................................................... 247.9 Exploded view cable -PTT-x .............................................................................. 257.10 Spare part list for cable -PTT-x ........................................................................ 25

1 Outline dimension

1

2

Cable type Complete cable length

-PTT-6, -PTT-6-1, -PTT-L

1.85 m

-PTT-LA 2.30 m

-E/D-3PTT-M 2.45 m

-7, -ATC / -L

2.00 m

Cable type Length of � Length of �

-E/D-3PTT-M 0.80 m 1.60 m

-PTT-LA 0.50 m 1.75 m

-PTT-L, -PTT-6 1.50 m 0.30 m

-PTT-6-1 0.80 m 1.00 m

HME 46-3, HMD 46-3 02/2008 5/25

2 Technical Data

2.1 HeadphonesTransducer principle_______________________ dynamic, open Ear coupling _____________________________ supra-aural Frequency response _______________________ 20 to 14.000 Hz Impedance _____________________________ 300 ohms per system Sensitivity

HMD/E 46-3 _______________________ 95 dB/SPL at 1 kHz, 1 mW mono83 dB/SPL at 1 kHz, 1 V

HMD/E 46-31 ______________________ 95 dB/SPL at 1 kHz, 1 mW mono103 dB/SPL at 1 kHz, 1 V

THDHMD/E 46-3 _______________________ < 1 % at 95 dB SPL (350 to 3.000 Hz)HMD/E 46-31 ______________________ < 1 % at 110 dB SPL (350 to 3.000 Hz)

Contact pressure _________________________ aprx. 3.0 N

2.2 Microphone of HMD 46-3Type _______________________________ MD 46-413 Transducer principle _____________________ dynamic, noise compensating Frequency response______________________ 100 to 12.000 Hz Output voltage _________________________ 0.5 mV/Pa Impedance ____________________________ 200 ohms

2.3 Microphone of HMD 46-3(5)Type _______________________________ MD 46-413_5 ohms Transducer principle _____________________ dynamic, noise compensating Frequency response______________________ 100 to 12.000 Hz Output voltage _________________________ 0.125 mV/Pa Impedance ____________________________ 5 ohms

2.4 Microphone of HME 46-3 (with preamplifier)Type _______________________________ MKE 46 Transducer principle _____________________ pre-polarized condenser microphone, noise compensating Frequency response______________________ 350 to 6.000 Hz Output voltage

HME 46-3, -3-6, -3PTT-M, -3PTT-6, -3PTT-L, HME 46-31 __________ adjustable from 17 to 100 mV/Pa,

80 mV/Pa (factory pre-set) ≅ 800 mV at 114 dB SPL

HME 46-3PTT-LA, -ATC adjustable from 17 to 215 mV/Pa,152 mV/Pa (factory pre-set) ≅ 1520 mV at 114 dB SPL

Terminating impedance___________________ 150 to 2.200 ohms Supply voltage _________________________ 8 to 16 V DC

2.5 General dataAmbient temperature

operating mode ___________________ -15°C to 55°C stocking _________________________ -55°C to 70°C

Weight, without cable ____________________ aprx. 150 g

HME 46-3, HMD 46-3 6/25 02/2008

3 Disassembly

3.1 Removal of the cableReference: • see “Exploded view HME 46-3 / HMD 46-3”, page 21.

1. Loosen the screws of the cable.2. Remove the cable from the cable holder (110).

3.2 Disassembly of the capReference: see “Exploded view HME 46-3 / HMD 46-3”, page 21.

1. Remove the earpad (90) from the relevant cap (20 or -25).2. Lift the sides of the discs (80), now the screws (70) are visible or remove the discs (80) from the

caps (20 or -25) completely if necessary.3. Remove the screws (70).4. Pull out the the resonator (60) with capsule.5. Remove the center (50).6. Remove the felt plate (40).7. Unsolder the leads of the cable (TP1 to TP4) of the split headband (10) from the PCB,

see “Printed circuit boards”, page 19.8. Unsolder the leads from the capsules (TP8, TP9), see “Printed circuit boards”, page 19 or see “Exploded

view of the system module”, page 23.9. Unsolder the cable from the microphone arm (100 or -105) (TP5 to TP7)*.

10. Remove the cable holder (110) from the cap (20)*.11. Remove the cap (20 or -25) from the split headband (10).

3.3 Disassembly of the cable Reference: see “Exploded view cable -PTT-x”, page 25.

1. Remove the four screws (40) of the housing (10).2. Open the housing (10, 30).3. Remove the inserts (50).4. Take out the PCB (60) and the cables (90, 100) of the housing (10).5. Desolder the cables (90, 100) from the PCB (60).

* Only microphone side.

HME 46-3, HMD 46-3 02/2008 7/25

3.4 Disassembly of the microphone armReference: see “Exploded view HME 46-3 / HMD 46-3”, page 21 or see “Exploded view of the cap, microphone side”, page 24.

1. Rotate the microphone arm (100 or -105) to the side position if necessary (see figure below).2. Screw the threaded pin (10 of the cap module) completely into the microphone arm fixing �.3. Disassemble the microphone arm (100 or -105) from the cap (20) by moving the microphone down

towards to the other cap (-25) of the headset �.

�

� 100

20

10 (of the cap module)

HME 46-3, HMD 46-3 8/25 02/2008

4 Assembly

4.1 Assembly of the capReference: • see “Exploded view HME 46-3 / HMD 46-3”, page 21.

1. Attach the relevant cap (20 or -25) to the headband (10).2. Solder the relevant leads of the split headband cable to the PCBs (TP1 to TP4), see “Printed circuit boards”,

page 19 and see “Block diagram”, page 20.3. Solder the microphone cable (TP5 to TP7) at the microphone arm PCB, see “Printed circuit boards”, page 19

and see “Block diagram”, page 20.4. Put the center (50) over the resonator (60) and solder the orange and brown leads at the relevant pins

(TP8 and TP9) to the PCB , see “Printed circuit boards”, page 19 and see “Block diagram”, page 20.5. Install the felt plate (40) on the PCBs (20 of the system module).6. Turn the center (50) into the cap (20 or -25).7. Set the capsule with resonator (60) into the cap (20 or -25).8. Install the screws (70) with a torque of 25 Ncm ±3 Ncm.9. Install the label (120) on the cap (-25), if applicable.

10. Install the disc (80) on the resonator (60) if necessary.11. Install the earpad (90) over the disc (80) on the cap (20 or -25).

4.2 Assembly of the -PTT-x cableReference: see “Exploded view cable -PTT-x”, page 25

1. Solder the cables (90, 100) at the PCB (60), see “Wiring diagrams”, page 15 et sqq.2. Install the PCB (60) with the cables (90, 100) into the housing (10).3. Close the housing (10) with the cover (30).4. Install the inserts (50) at the top of the housing (10).5. Fasten the screws (40) of the housing (10) with a torque of 25 Ncm ±3 Ncm.

* Only for microphone side.

HME 46-3, HMD 46-3 02/2008 9/25

4.3 Assembly of the cable to the headsetReference: • see “Exploded view HME 46-3 / HMD 46-3”, page 21.

1. Set the connector of the system cable into the cable holder (110)*.2. Fasten the screws of the system cable with a torque of 25 Ncm ±3 Ncm.

4.4 Assembly of the microphone armReference: see “Exploded view HME 46-3 / HMD 46-3”, page 21.

1. At the inside of the microphone arm fixing is a latch �. Firstly set this latch at the right socket position � of the cap (20).

2. Hook the microphone arm (100 or -105) into the cap (20). 3. Fix the microphone arm (100 or -105) with the threaded pin (10 of the cap module) to outside. Turn the

threaded pin (10 of the cap module) out to exceed in the assembled condition 0.1 to 0.3 mm over the surface of the microphone arm fixing.

* Only for microphone side.

�

�

�PCB

PCB cable (inside)

20 100

10 (of the cap module)

HME 46-3, HMD 46-3 10/25 02/2008

5 Testing and fault isolation

5.1 Tools and test equipment

5.2 Operational test of the audio systemReferences• see “Cable connector´s pin alignment”, page 14. • see “Wiring diagrams”, page 15 et sqq.• see “Printed circuit boards”, page 19.

5.2.1 Audio testing the headset with cable

1. Connect the sine wave generator with the negative and the positive line at the relevant pins of the connector, see “Cable connector´s pin alignment”, page 14 or see “Wiring diagrams”, page 15 et sqq.

2. Set the sine wave generator to 300 mV eff ± 5 mV with a signal of 1 kHz and switch the generator on.3. A clear signal without any distortion must be audible in both capsules.

5.2.2 Operational testing of the pre-polarized microphone at the headset with cable (HME 46-3-x only)

A. Audio testing, see “Cable connector´s pin alignment”, page 14 and see “Wiring diagrams”, page 15 et sqq.

1. Connect the headset with the cable connectors into the intercom.2. Put on the headset, adjust the microphone to the correct position and talk into the microphone.3. Listen to the audio output signal. No distortion should be audible.

B. Visual testing

1. For detailed visual testing please use the ossiloscope, see “Microphone test setup according to RTCA/DO-214”, page 14.

Description Specification / Type Source

Power supply U: 0-30V DC adjustable I: ≥500 mAeff Hum: <1%

Commercial

Sine wave generator AF Level adjustable Commercial

Multimeter U: 0-30V DC I: ≥500 mAeff Resolution ≤ 0.1 V

Commercial

Oscilloscope - Commercial

Intercom

Audio amplifier

-

Any audio amplifier with high impedance micro input

Commercial

Commercial

HME 46-3, HMD 46-3 02/2008 11/25

5.2.3 Testing of the dynamic microphone at the headset with cable (HMD 46-3-x only)

Reference: See fig. 1 “Operational test of the dynamic microphone” page 13

A. Operational testing

1. Connect the microphone connector of the headset with the negative and positve line into the audio amplifier input, see “Cable connector´s pin alignment”, page 14 or see “Wiring diagrams”, page 15 et sqq.

2. Connect the headphone connector of the headset with the negative and positve line into the audio ampli-fier output, see “Cable connector´s pin alignment”, page 14 or see “Wiring diagrams”, page 15 et sqq.

3. Connect the oscilloscope into a free amplifier output, see “Operational test of the dynamic microphone”, page 13

4. Speak into the microphone of the headset: - The speaker´s voice will be audible without any distortion in both capsules of the headset. - The amplified audio signal of the speaker´s voice will be displayed via oscilloscope.

B. Testing of the capsule via resistor measurement

1. Set the multimeter into resistor measurement mode.2. Connect the multimeter at the relevant pins of the cable connector, see “Cable connector´s pin alignment”,

page 14 or see “Wiring diagrams”, page 15 et sqq. Result: The multimeter displays 200 ohms ± 10 % for correct connection of the cable and the capsule. There is no failure or breaking in the cables.

5.2.4 Operational testing of the headset cables

References• see “Cable connector´s pin alignment”, page 14. • see “Wiring diagrams”, page 15 et sqq.

A. Conductivity test: Set the multimeter into the conductivity mode and check each cable from the connector to the system connector for conductivity.

B. Operational test of the PTT-button: The contactivity is available when the PTT-button is pressed.

For the following testing procedures disassembling of the headset is necessary.

5.2.5 Audio testing of the headset without cable

A. Testing audio via PCB at the PCB socket P1, see “Printed circuit boards”, page 19.

1. Supply 1 kHz signal at the PCB socket P1.2. In the headphones, the 1 kHz tone must be audible.

B. Testing of the acoustic transducer.

1. Set the sine wave generator to 100 mVeff ± 5 mV with a signal of 1 kHz to the PCB. Set a signal to TP8 (+) and TP9 (-), see “Printed circuit boards”, page 19.

2. In the headphones, the 1 kHz tone must be audible.

HME 46-3, HMD 46-3 12/25 02/2008

5.2.6 Testing of the ActiveGard™ of the PCB (not HMD/E 46-31)1. Connect the sine wave generator with the negative and the positive line at TP3 (+) and TP4 (-), see “Printed

circuit boards”, page 19.2. Measure the output signal at TP8 (+) and TP9 (-), see “Printed circuit boards”, page 19.3. The following table show you the input levels of the signal generator and the corresponding

measurement results:

Figure 1Operational test of the dynamic microphone

Input signal of 1 kHz at TP3 (+) and TP4 (-) of the PCB

Output level at TP8 (+) and TP9 (-):Audible via loudspeaker

Output level at TP8 (+) and TP9 (-):Damaged loudspeaker or open cable connection

300 mVeff ±5 mV Output level is reduced about min. 8 dBV. The PCB with loudspeaker works correctly.

290 to 310 mVeff

1 Veff ±5 mV 30 to 40 mVeff

Speaker´s voice

Audio amplifier

output

Headphone connector

input

Microphoneconnector

outputOscilloscope

HME 46-3, HMD 46-3 02/2008 13/25

Figure 2Microphone test setup according to RTCA/DO-214

Figure 3Cable connector´s pin alignment

Oscilloscope

Multimeter

Power supply8-16V DC

Sine wavegenerator

Artificial mouth

Microphone Hi Microphone Lo

Nearfield sensitivity

25 µF

220 ohms

470 ohms

SPL = 94 dB

6 mm (0.24 inch)

Connector cable -L (also cable HME 46-ATC)

14 98

510

6 7

23

bridge

orange

blue

redbrown

greenn. c.

white

screen

Solder side

Connector system cable

Audio Hi rightAudio Lo rightnot connectedScreenAudio Hi leftAudio Lo leftMicrophone HiMicrophone LoBridge to pin 10Bridge to pin 9

123456789

10

orangebrown

green

yellowredbluescreen

Audio Hi leftAudio Hi right Audio Lo left

Audio Lo right

not connectedMicrophone HiMicrophone LoScreen

whiteCable -6

orangebrown

green

yellowredbluescreen

Audio Hi leftAudio Hi right Audio Lo left

Audio Lo right

not connectedMicrophone HiMicrophone LoScreen

white

HME 46-3, HMD 46-3 14/25 02/2008

6 Wiring diagrams

6.1 Wiring diagram for cable -E-3PTT-M, -D-3PTT-M

Syst

em c

able

whi

te /

ora

nge

not

conn

ecte

dbr

own

/ gr

een

not

conn

ecte

dye

llow

scre

enre

dbl

ue

whi

teno

t co

nnec

ted

brow

ngr

een

not

conn

ecte

d

not

conn

ecte

d

scre

enE-

3PTT

-M: r

ed o

rD

-3PT

T-M

: ora

nge

blue

whi

te

oran

ge

gree

n

scre

en

blue

red

brow

nso

lder

ing

side

Syst

em c

able

whi

te /

ora

nge

not

conn

ecte

dbr

own

/ gr

een

not

conn

ecte

dye

llow

scre

enre

dbl

ue

whi

teno

t co

nnec

ted

brow

nno

t co

nnec

ted

gree

n

scre

enbr

idge

blue

E-3P

TT-M

: red

or

D-3

PTT-

M: o

rang

e

5157

60

5157

61

brid

ge

Aud

io H

iA

udio

Lo

Dyn

. Mic

Hi

not

conn

ecte

dPr

e-po

lari

zed

Mic

Hi

PTT

PTT

/ Sc

reen

Mic

Lo

1 2 3 4 5 6 7 8

HME 46-3, HMD 46-3 02/2008 15/25

6.2 Wiring diagram for cable -PTT-L

Syst

em c

able

whi

teor

ange

brow

ngr

een

yello

wsc

reen

red

blue

whi

teor

ange

brow

nye

llow

gree

n

blac

ksc

reen re

dbl

ue

brow

n

scre

en

whi

te

blue

red

oran

ge

gree

n

brid

ge

blac

k

yello

w sold

erin

g si

de

Aud

io H

i lef

tA

udio

Lo

left

PTT

PTT

(bri

dge

to p

in 1

0)A

udio

Lo

righ

tA

udio

Hi r

ight

Mic

roph

one

Hi

Mic

roph

one

LoSc

reen

PTT

(bri

dge

to p

in 4

)

1 2 3 4 5 6 7 8 9 10

Syst

em c

able

whi

te

oran

gebr

own

gree

nye

llow

scre

enre

dbl

ue

whi

teor

ange

brow

ngr

een

yello

w

blac

ksc

reen re

dbl

ue

5157

60

5157

61

HME 46-3, HMD 46-3 16/25 02/2008

6.3 Wiring diagram for cable -PTT-6

Syst

em c

able

whi

teor

ange

brow

ngr

een

yello

wsc

reen

red

blue

whi

teor

ange

brow

nye

llow

gree

n

blac

ksc

reen re

dbl

ue

Syst

em c

able

whi

teor

ange

brow

ngr

een

yello

wsc

reen

red

blue

whi

te

oran

gebr

own

gree

nye

llow

blac

ksc

reen re

dbl

ue

5157

60

whi

teor

ange

brow

ngr

een

yello

wbl

ack

red

blue

scre

en

Aud

io H

i lef

tA

udio

Hi r

ight

Aud

io L

o le

ftA

udio

Lo

righ

tPT

TPT

TM

ic H

iM

ic L

oSc

reen

5157

61

HME 46-3, HMD 46-3 02/2008 17/25

6.4 Wiring diagram for cable -PTT-LA

Syst

em c

able

whi

teor

ange

brow

ngr

een

yello

wsc

reen

red

blue

whi

teor

ange

brow

nye

llow

gree

n

scre

enno

t co

nnec

ted

red

blue

yello

w

scre

en

whi

te

brow

nre

d

blue

sold

erin

g si

de

Syst

em c

able

whi

te

oran

gebr

own

gree

nye

llow

scre

enre

dbl

ue

whi

teor

ange

brow

ngr

een

yello

w

scre

enno

t co

nnec

ted

red

blue

5157

60

1 2 3 4 5 6 7 8 9 10

Aud

io H

i rig

htA

udio

Lo

righ

tPT

TPT

T /

scre

en, b

ridg

e to

pin

9,

resi

stor

75R

bet

wee

n pi

n 4

and

pin

10

Aud

io H

i lef

tA

udio

Lo

left

Mic

Hi

Mic

Lo

brid

ge t

o pi

n 4,

PTT

/ s

cree

nre

sist

or 7

5R b

etw

een

pin

4 an

d pi

n 10

/ s

cree

n

5157

61

109

HME 46-3, HMD 46-3 18/25 02/2008

6.5 Printed circuit boards

L

P1

TP1

TP2

TP3

TP4

TP5

TP6

TP7

TP8

TP9

Aud

io s

igna

l

Left

H

iRi

ght

Hi

Left

Lo

Righ

tLo

30

0 m

V/1

kH

z30

0 m

V/1

kH

z

5107

21(s

ee r

ear

side

of

the

PCB)

L

P1

TP1

TP2

TP3

TP4

TP6

TP5

TP7

TP8

TP9

Aud

io s

igna

l

Left

H

iRi

ght

Hi

Left

Lo

Righ

tLo

300

mV

/1 k

Hz

300

mV

/1 k

Hz

5107

22(s

ee r

ear

side

of

the

PCB)

PCB

head

phon

e, s

olde

r si

de, P

CB-n

o. 5

1072

1PC

B he

adph

one,

sol

der

side

, PCB

-no.

510

722

The

PCB

layo

ut

is s

imul

ar o

n bo

th s

ides

The

PCB

layo

ut

is s

imul

ar o

n bo

th s

ides

The

caps

ule´

s im

peda

nce

has

been

cus

tom

ized

. The

refo

reth

e PC

B as

sem

blin

g ha

s be

ench

ange

d.

For

PCB

no. 5

1072

1 or

der

the

•sp

are

part

mod

ule

5275

65

(not

mic

roph

one

side

) or

•sp

are

part

mod

ule

5257

63

(mic

roph

one

side

)

For

PCB

no. 5

1072

2 se

vera

l sp

are

part

s ar

e av

aila

ble.

HME 46-3, HMD 46-3 02/2008 19/25

6.6 Block diagram

HME 46-3, HMD 46-3 20/25 02/2008

7 Exploded views with spare part lists

7.1 Exploded view HME 46-3 / HMD 46-3

120

100

10

thre

aded

pin

20

90

Mic

roph

one

side

80

70

40

110

50

PCB

60

cabl

e w

ith

scre

ws

tran

sduc

er

Not

e:Th

e sy

stem

mod

ule

cons

ists

of

- the

reso

nato

r (60

)- t

he c

apsu

le a

nd- t

he P

CB

HME 46-3, HMD 46-3 02/2008 21/25

7.2 Spare part list for HME 46

7.3 Spare part list for HMD 46

FIG. ITEM PART NUMBER NOMENCLATURE UNITS PER ASSY

10 515489 SPLIT HEADBAND 1

20 525765 CAP, MICROPHONE SIDE 1

-25 515007 CAP HME 46 ATC, NOT MICROPHONE SIDE 1

-30 525763 MODULE MICROPHONE SIDE: CAPSULE WITH RESONATOR, PCB AND LEADS NOTE: FOR SEVERAL RESONATOR, PCB OR LEAD ORDERING SEE ALSO EXPLODED VIEW OF THE SYSTEM MODULE

1

-35 525764 MODULE NOT MICROPHONE SIDE: CAPSULE WITH RESONATOR, PCB AND LEADS NOTE: FOR SEVERAL RESONATOR, PCB OR LEAD ORDERING SEE ALSO EXPLODED VIEW OF THE SYSTEM MODULE

1

40 093680 FELT PLATE 1

50 600777 CENTER 1

60 094429 RESONATOR 1

70 522096 LENS SCREW 2

80 523399 DISCS, 1 PAIR 2

90 515295 EARPADS, 1 PAIR 2

-95 515296 EARPADS, 100 PAIRS 200

100 515645 MICROPHONE ARM MKE 46 STANDARD 1

-105 528136 MICROPHONE ARM MKE 46_152MV/PA 1

110 093675 CABLE HOLDER 1

120 528106 LABEL 1

- ITEM NOT ILLUSTRATED


10 515489 SPLIT HEADBAND 1

20 525765 CAP, MICROPHONE SIDE 1

-25 515432 CAP HMD 46 ATC, NOT MICROPHONE SIDE 1

-30 525763 MODULE MICROPHONE SIDE: CAPSULE WITH RESONATOR, PCB AND LEADS NOTE: FOR SEVERAL RESONATOR, PCB OR LEAD ORDERING SEE ALSO EXPLODED VIEW OF THE SYSTEM MODULE

1

-35 525764 MODULE NOT MICROPHONE SIDE: CAPSULE WITH RESONATOR, PCB AND LEADS NOTE: FOR SEVERAL RESONATOR, PCB OR LEAD ORDERING SEE ALSO EXPLODED VIEW OF THE SYSTEM MODULE

1

40 093680 FELT PLATE 1

50 600777 CENTER 1

60 094429 RESONATOR 1

70 522096 LENS SCREW 2

80 523399 DISCS, 1 PAIR 2

90 515295 EARPADS, 1 PAIR 2

-95 515296 EARPADS, 100 PAIRS 200

100 528135 MICROPHONE ARM MD 46-413 STANDARD 1

-105 528154 MICROPHONE ARM MD 46-413_5 OHMS 1

110 093675 CABLE HOLDER 1

120 528106 LABEL 1


HME 46-3, HMD 46-3 22/25 02/2008

7.4 Exploded view of the system module

7.5 Spare part list of the system module not microphone side (525764)

7.6 Spare part list of the system module microphone side (525763)


10 515642 CAPSULE WITH RESONATOR AND LEADS 1

20 515644 PCB ASSEMBLY NOT MICROPHONE SIDE FOR HME/D 46-3 1

-20A 528155 PCB ASSEMBLY NOT MICROPHONE SIDE FOR HME/D 46-31 (WITHOUT ACTIVEGARD)

1

30 515002 LEAD BROWN 1

40 515003 LEAD ORANGE 1



10 515642 CAPSULE WITH RESONATOR AND LEADS 1

20 515643 PCB ASSEMBLY MICROPHONE SIDE FOR HME/D 46-3 1

-20A 528156 PCB ASSEMBLY MICROPHONE SIDE FOR HME/D 46-31 (WITHOUT ACTIVEGARD)

1

30 515002 LEAD BROWN 1

40 515003 LEAD ORANGE 1


10

20

40(orange)

30 (brown)capsule

HME 46-3, HMD 46-3 02/2008 23/25

7.7 Exploded view of the cap, microphone side

7.8 Spare part list of the cap, microphone side


10 087509 THREADED PIN 1


10cap ofmicrophone side

microphone arm

HME 46-3, HMD 46-3 24/25 02/2008

25

7.9 Exploded view cable -PTT-x

7.10 Spare part list for cable -PTT-x


10 515048 HOUSING 1

20 514188 KNOB PTT 1

30 600698 COVER 1

40 087996 LENS SCREW TORX -6IP-EJOT, 1.8X8 4

50 039538 INSERT RD7.2X4 2

60 515649 PCB ASSY 1

-70 528106 LABEL 1

90 515058 CABLE -PTT-6, 0.3 M 1

90 600730 CABLE -PTT-6-1, 1.0 M 1

90 515060 CABLE -PTT-L, 0.3 M 1

90 600642 CABLE -PTT-LA, 1.75 M 1

90 600667 CABLE -E/D-3PTT-M, 1.6 M 1

100 515486 CABLE -PTT-6, 1.5 M 1

100 515479 CABLE -PTT-6-1, 0.8 M 1

100 515486 CABLE -PTT-L, 1.5 M 1

100 515470 CABLE -PTT-LA, 0.5 M 1

100 515479 CABLE -E/D-3PTT-M, 0.8 M 1


3060

40

40

4040

PCB drawn as example

50

10

50

90

100

20

HME 46-3, HMD 46-3 02/2008 25/25

Air Traffic Control HME 46-3 HMD 46-3 -...

Documents

Transcript of Air Traffic Control HME 46-3 HMD 46-3 -...