USER MANUAL

I MODEL BP317 I

Portable Belt Pack User Station

:

9350-5435-00 D l 1/95

RTS

'"

PROPRIETARY NOTICE

The RTS product information and design disclosed herein were originated by

Communications,

and are

Inc.

the properly of Telex

Telex

reserves all

pqnktary design, manufactlning, r e s c h o f n , useand sales rights thereto, and to any article d~sclosed except to the extent rights are expmsly granted to others.

COPYRIGHT NOTICE

C fight 1994 by Telex Communications, Inc.. prior written pernussion from Telex is prohibited

AU rigts resaved Reproduction in whole or in part without

PATENT NOTICE

This equipment contains and uses a desi n embodied in

United States Patent No. 4,358,644: "A kilateral Current

Source for a Multi-terminal Intercom". This design employs a two-wire to fow-wire converter.

UNPACKING AND INSPECTION

Immediately upon receipt of the equipment. inspect the shipping conmer and the wnttnts carefully for an discrepancies or damage. Should there be any, not& the freighi company and fie dealer at once.

WARRANTY INFORMATION

RTS products are warranted by Telex Communications.

Inc. to be bee from defects in materials and workmanship for a period of three years from the date of sale.

The sole obli~ation Telex dmina the wanantv oeriod is to provide, without charge, parts aiid labor n&&y to remedy covered defects appearin in products returned pre aid to Telex. This de&t, malfunction or wananty failure

&

caused not cover any beyond the control of Telex, including unreasonable or neglisent operation, abuse, accident, falure to foUow inSmr.hons in the

Senrice Manual or the User Manual. defective or improper associated equipment, alt&npts modification

Roducu wlth theu serial numbers remov ping damage. or effaced are not covered by this warranty.

To obtain warranty service, follow the procedures entitled for Repair or and "Shipping to Manufacturer

Adjustment".

- - -

This warrantv is the sole and exclusive exoress wanantv given with &ect to RTS products. It 1s h e responsibility of the user to determine before purchase that this d u c t is suitable for the user's intended

CUSTOMER SUPPORT

Technical questions should be directed to:

RETURN SHIPPING INSTRUCTIONS

If arepair is necessary, contact the dealer where t i unit was purchased.

&

h the dealer is not possible, obtain a

Customer Service Deoartment

~ ~

-~

~ r ~ -

~~ ~ ~~ Telex ~ommun$ions, Inc.

Telephone: (800) 828-6107

Fax:

DO NOT RETURN ANY

TO THE FACTORY

8

UT FIRST

OBTAINING A RETURN AUTHORIZATION.

Be prepared to provide the company name, address, phone number, a person to contact r e g d n g the repair, the type and quantity of equipment. problem and the send number(s). a description of the

SHIPPING TO MANUFACTURER FOR REPAIR OR

ADJUSTMENT

All shipments of RTS products should be made via

United Pmcel Service or the best available shipper, p aid. The equi ment should be shipped in the original

&

i

? container that is ngld and of adeauate sue. If a substitute containa is used, h e equipment ihould be wrap paper and surrounded with at least four inches o excelsior or similar shock-absorbing material. All

ship"

. not available, use any suitable ped in ents must be sent to the following address and must inc ude the Rehm Authorization.

Upon completion of any re air the equipment will be retuned vla United Parcel getvice or specified shipper

NEITHER TELEX NOR THE DEALER WHO SELLS

RTS PRODUCTS IS

LIABLE

CONSEQUENTIAL DAMAGES OF ANY

KIND.

Page 2

TABLE

OF

CONTENTS

pROrnARYNOTI(3E

COPYRIGHTNOT][CE

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2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

P A r n N O n ( 3 E

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2

UNPACKINGANDINSPECnON

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2

WARRAElTYINEDRMAnON

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2

RETLJRNSHIPPINGINSTRUCIIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

SECllON 1: DESCRIPTION & SPECIFICATIONS

....................................

4

1 . l D E S m O N

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4

1 2 BP317 SPECIFICATIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

SECllON 2: INSTALLATION

................................................

6

2.1 TYPE OF SYSTEM, POWJWNG METHOD

. . . . . . . . . . . . . . . . . . . . .

6

22TYPEOFMOUNTNG

23CHOOSINGHEADSETS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

2.4 CABLING REQUIREMENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

2.4.1WIRES5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

2.42GROUNDING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

2.43SIGNAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

2.SMECHANICAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

2.6SYSTEMCHECK

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

2.7 STANDARD USER STATION CONNECTIONS

SECTI0NI:OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

..................................................

6

3.1 OPERATING CONTROLS AND CONNECTIONS

320PERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11

DIAGRAMS

....... .................................................

12

Page 3

SECTION 1:

DESCRIPTION & SPECIFICATIONS

The

Uodcl

BF317 is a patable, single-channel intacom

usw

This

usw is designed

to be used in a

fan

duplex, confemme

h e

A confenwe line

intercom

system allows a group of people M

talk

and listen on a singIe c h a ~ ~ L channel, all

users can

listen when one or more other usen are talking (co1&~115ig). Up to 75

nscrs can

sham

the

same confaence line

(or

conference bus),

Full duplex operation allows two way c o n d o n at

the

same time, that is, one user can intermpt a second user while the second

usw

is

still

talking.

The BP317 with to a headset, in effect, interfaces a human

u w the

intercom system. The user tallcs and listens using the headset (or a handset) The headset connects to the BP317 via a four conductor fable and corntor. The BP317 con- nects to the system using a

three

conductor "microphone" type cable. The BP317 contains two conmls to help the user well to the i n m m system: the volume control, and the microphone

switch.

The volume control on the BP317 has a wide range to

cumpensate for. user hearing differences, variation, variations in headset ambient

noise

I handset sensitivity, and variations in talker voices. The volume control in the BP317 reduces distortion by driving the headphone amplifier only as much as needed.

In ncumal system operation, one

or

more

users

talk and rest lkta. A micauphone switch on each station allows the

the talker's

miaophone to be

enabled

and allows the

listuras

tokeep theirtnicmphomM1dIn thisoondition,speech intelligibility is other

enhanced since background microphones is

not p m m t noise from

The microphone switcb has

three

positions:

(1) center "OFF",

(2) momentary "ON", and

(3) latched "ON". tion, especially mful in a high noise environment The latched p o s i h allows

"hands

£fee" operation. when the

user needs

to have. two

way

c o n v e d o n while performing another activity.

Model BP317 Connections, Inputs & Outputs

Unmodified BP317

usw

two connexm.

1. An XLR4 type female connector for a dynamic microphone headset or handset.

2. An XLR-3 type femak con- to tie the station to

the

communications line.

Power Reqninments

-\The BP317 requires from

+

15 to +35 opaable at reduced performance from

Power is carried

to

the unit from

+ volts

12 to

DC,

+I49 volts. a system power supply using two different methods: (1) the

TW or

two but is wire method,

or

(2) the

three

wire

or

Series 17 method.

Optional Features

User-instaUed options include:

carbon

microphone headset connection,

two-wire

line opention, and two-channel line opelalion.

The BP317 works with both the TWIntercom System and the Series 17 Intercom System. Further information about theTW

Intercom

System and the Series 17 Intmcm System is found in Appendix A.

13 BP317 SPECIFICATIONS

Input DC Voltage

18 to 35 volts

DC

reduced

perfor-

-)

DC C m n t

Quiescent '20 milliamperes

Operating, 10 dB below dipping 25

ohm

35 milliamperes

Impedance Across L i e

10,000 ohms, minimum

Environmental

Temperature operating

Storage

Humidity

Storage

&

5% to 95% non-condensing

Noise Contribution

One unit -75 dBu

Ten units -67 dBu

Microphone Preamplifier

Input Impedance 470 ohms/dynamic mi

Source Impedance 200 ohms, nominal

Maximum Input

Level 150 millivolts

Frequency Response

(-54 dBu input) 100 hertz to 10 kilohertz f dB

Limiter Range 30 dB

Carbon Mic (User Option)

Excitation Cln~ent I0 milliamperes, nominal

Current Source

Transfer Ratio 3.3 milliamperes / volt

= 3.3 millisiemens

Output

= 1 volt peak, nominal

Headphone Amplifier

Voltage Gain 34 dB

Onlput Voltage 8 volts

@-@peak

into 25 ohms

1/2 watt peak into 25 ohms

HeadphoneImpedanceRange

25 to 600 2000 with reduced levels)

NOTE: DO NOT USE HEADPHONES W H

IMPEDANCES LESS THAN 25 OHMS.

Sidetone Adjustment Range

-2OdBtoNlon

Headset Connector

Dynamic Microphone XLR type 4-pin female

L i e Connections

Input XLR type 3-pin female

D h n d o o s

5.20 H 3.00 1.5P D, inches

132 H 76 W x 38 D, millimeters

Weight

1.1 pounds, 0.5 kilograms

F i

Clear, anodized aluminum I or textured grey paint

*Depth with beltclip: 1.87 inchcs 147.5 mm

SPECIFICATION NOTES:

0 dBu = 0.775 volts rms.

0 dBm = 1 milliwatt

= 0.775 volts rms into 600 ohm load

(0

dBu, open circuit)

Note: M products and specifications subject to change wilhout notice.

Page 5

Follow the ~~: "To Insall the BP317". below.

2.1 Type Of System, Power@ Method

And Power

Supplier(ii)

'Ihe BP317 can be installed in a (1) three

wire

system, (2) two wire system. a special two wire system.

(1) In a three wire system ("Series 17" type), the powex is sepate

fmm

the audio and is supplied by a central power supply.

(2) In a two wire system CTW" type), the powa and audio may sharethesamewire.Ihepowerissmctntral- ly by a special "lW" supply.

(3) In a special two

wire

system (Lccal Power), each

BP317 is locally powered. and the BP317s in the sys- tem

are

interconnected using two wire cable.

In (1) above,thepowersupply isaregulatedsupply.24 volts

DC a 2 a m p

DC. Up to 57 BP317s

can

be ope@ed from

In case (2) above, the number of BP317s

that

can powered by various "TW" supplies

are as

follows: PS8 power supply: 12; PSI% 28. PS31: 42.

In (3) above,alocalpowersupply needstopvide 18 to 24 volts DC milliamperes

peak.

In (1) and (3) above.the two wires canying

the

audio require one system terminaton consisting of a200 ohm resistor and a 100 microfarad/50 volt capacitor in series.

This

combina- tion is connected

across

the two wires. If the capacitor is polarized its negative teaminal is connected to the system circuit common.

To Install the

BP317:

1. Determine the type of system in which the BP3 17 is to be installed. Determine the powering method and power supply(ies).

2. Determine the mounting of

Permanent.

the

BP317: Portable or

3. Read "Choosing Headsets or Handsetsts (Section 23).

4. Debermine

the

cabling requirements.

5. Create a system block diagram and equipment not already available), then install the system. list (id

6. Verify correct system operation by using the checkout

7.

Update

the system block diagram, equipment list and any other documentation to reflect the

"as

installed" configuration. If the system block diagram was originally created by RTS Systems, send a copy of the

"as installed"

system block diagram to RTS Systems.

This diagram will be used to update the original documentalion. and for

future

service suppon.

(1) One type of mounting for the BP317 is patable, when it is worn on dothing

or

an equipment belt. The BP317 has a Mt clip.

(2) Another type of mounting for the BP317 is permanent

or

semi-permanent, either a "desk mount" (sitting on a

desk) or

fastened tofmniture. Avoid placing

the

BP317 on a metal cr gmunded metal surface. Contact between the Model BP317 and metal s~lrfaces cause wanted noises on the intercom line. un-

2.3 Choosing Headsets

hfmiwt&

Headset choice depends on operating en- vironment, operating requirements, and personal taste.

ODn;ltinnEnvimma& Table 2-1 shows typical operating envinnunents and the amount of background noise present.

A very quiet operating environment may require that sound does not leak from fhe headphones, meaning the head- phones

should

have good "acoustic isolation".

A very noisyhoud environment usually requires head- phones that prevent good

acoustic

d d e isolation), from headphones leaking that can in (ngain, produce a loud, clear well.

sound,

and noise cancelling microphones, as

Undexstanding speech in a noisy environment requires that the wanted sound from the hexbhones is as loud or louder than the unwanted

sound

leaking into the headphones limn the noisy environment.

I,mdw% In general the loudness of a headphone depends upon its ab'ity to abxab p w e r at a given wltage peaanCe) and

(m- the efficiency of its design. Practically, the impedance has a larger effect with present day headsets.

Imoedance.

are louder, caw- ingtheBP317todraw morecun'entfmnthepo~ers~1~.

Hirgh impdance headphones nment from the not as lm& drawingiem power supply. The BP3 17 M g n range

of

impedancesfwtheheadphonepratoftheheadsetis25ohms to 600 ohms. Headphoms up to 2000 ohms will function but at reduced levels. In a double muffheadset such

DT109 sold by RTS Systems, there are 50 ohm headphones connected in parallel resulting in an impedance of25 ohms.

Efficiencv.

impedance headphones such as the DT109. In this head- phone, one milliwatt of electrical power produces 94 dB

SPL (Sound

=& dB in each ear of a DT109 as

I l l

DT108 headwi Low im- the DTlO8 and DTlW headsets, cause the BP317 to require mwe powex fmn the power supply. With DT109 headsets, BF'317 peak current is 75 milhamperes. With 600 headphones.BP317 peak current is

30 milliamperes. (Quiescent BP317 current is 20 mil-

Ilamperes.

The ability of headphones to shut out unwanted environ- mental noise varies from none (0 dB isoktian) to about n t h as loud (30 dB isolation). The d e p depends both on the design of the headset and the frequency content of the environmental noise. Lightweight, "open" headsets such as the RTS Systems LW67 (single mu@ and I33268

(double muff), have almost no (0 dB) isolation. The bade- off is that the LH267/LH268 are very comfortable and can be worn for long periods (8 to 12 hours) without physical discomfort from the earmuffs or headband. The

LH267bH268 are low impedance and can be turned up loud.

Because there is no isolation, we that the sound signals from the LH267bH268 are not unintention- ally leaked into micmphones.

The DTlBDT109 hudsets have an isolation ranging from

10 dB tom dB.

At least four companies: Telex, Setcom, David Clark, and

Carts Engineering sell headsets intended for heavy in- dushial, aerospace, and military markets. These headsets can-provide mustic isolation figures of 2OdB to 40dB.

Generally speaking, these headsets

are

heavier and less comfntable to

wear.

In high noiseenvimmnents, the headset microphone should be a noise cancelling type.

-In

general, the comfort of headsets depends upon their weight, padding and design.

2.4. Cabling Requirements

2.4.1 Wire Size

It may be

necessary

to overcome power losses by increasing conductor size over long nms (more

than

one kilometer).

Normal conductor size is #22 AWG (16 ohm/lOOO ft.). The

maximum

allowable loop resistance is d e V r m i by the powex supply voltage, the loop current and the

user

station

minimum

operating voltage. The

maximum

loop resistance equals the

difference

of the power supply voltage and the

minimum

operating voltage divided by the maximum loop current (pwerrequhd by the user station(s)).

Example: A BF'317 headset station (with 25 ohm head- phones) uses 35 milliarnpres at 10 dB below clipping. The power supply voltage is 26 volts DC and the

user

station

minimum

operating voltage is 18 volts DC (for bridging impedance). Then

the

maximum allowable loop resistance

=

(26-18) volW.035 amperes

=

228 ohms.

'Ibis cmespnds to an operating distance of 2192 meters

(7.125 feet) for a #22 AWG wire pair using a single

user

station with25ohm headphones. Datafor thesecalculations be found in

the

specifications in section 1 and in stand- ard electrical wire tables.

2.42 Grounding

System circuit ground should not be directly connected to

w

"chassis" ground (wheredirectly meansaconneo tion an ohmmeter would show). Each user station is bypased to its own chassis via a 0.1 microfarad capacitor, establishing aradio frequency CRF) ground to reduce radio frequency interference from radio transmitters.

Page 7

In 0rde.r to prevent a buildup of Muage

aaoss

capacitance, the power supply has a bleeder resistor to chassis ground (22 kilohms). If the system has no RTS power supply, a bleeder redstor should be supplied at a central point in the system.

of

not "earth" gromding the RTS System circuit

return

is

that

it pennits

continued

opedon dming

an

accidental ground faalt This accidtntal ground- ing can happen

as

the result of a pinched wire

or

a

scraped

cable

that

has been

pulled

across a sharp edge. A single accidental ground fault

can can

be Ideated by the system until the be cleared and (with luck)

befon

second ground fault can

system

down.

The 200 ohm line impdance is high enough to allow c o m m ~ o n line lengths of 1.6 kilometers (one mile) and low enough to permit an adequate speech bandwidih with 3.2 kilometers of accumulated cable. In most systems the 200 ohm impedance gives a high fidelity bandwidth with low

losses.

When

using equipment in rain or conditions of excessive moishne, always protect the equipment with plastic covers and

make sun

all cable connectors m snowormoishneand~tedmthplastic.Watcl'mudand snow in connectas can cause considerable hum.

Another h e t i t of not

"earth"

I C ~

The BP317

user

station is either clipped to a user's clothing is that it pvents the intduction of noise through "earth" currents from other equipment If the RTS circuit ground conducts these c m t s , it is likely

that

they will be heard

as

interfering noise on the communication line. forportable operation, or mounted on asmcture, camera or vehicle.

For permanent installation, temporarily remove the

Zd.3 Signal

deckmica

fmm the w e . Drill, debm and

fasten

the case

as

necessary, then reinstall the electronics. See Section 5 for inshudions

on

how toremove the electronics from the

case.

The number of conductors required to intexcmect user stations is: An insrallaton drawing f a headset

user

station BP317 is included at the end of this section. These drawings provide

Number of

Conductors

Number of i2haM&

mechanical

information useful forpermanent and other type installations. This information includes overall dimensions, fastener hole locations, console cutout dimensions and weights.

Two channel "TW" applications,

a

single channel,

three

wire applications may use either standard miaophonecable

(for convenience) or less expensive than miaqhone cable). Standard wire

size

for the system is #22 gauge wire for intemnnection For paman&t installatio~it&recommcndedthat~hchannel should have individually shielded twisted

pair

of at least

#22

- - wire. such

as

Belden #87U f a channels. 'Ibis will reduceint&erenceand help maintain a low cmsstalk figure between channels. In genaal, shielded cable will reduce interference. Umhielded cable can often be s d u l l y used.

Space allowances for control access. cabling and serviciig must be -ned on a case by case basis by the installer.

It is recommended that space be provided for: cabling

h c e

caching XLR flpe connector I&, local

powa option power supplies and headset connectors and cables.

If the headw connector is remoted. allow space between this cable and interfering sources such as v i d e o m monitors, power supplies and equipment with internal power supplies.

2.6 System

Check

The audio signal line level is maintained between -10 dBu and 0 dBu (between 0.24

and

0.77 volts rms).

nKse are

low enough to prevent crosstalk into other equipment

(such

as TV camaasf

yet high enough to reduce extanal interference to the

TW

Using thmbeltpackswith

three

headsetsand threepersons, verify all persons can intercommunicate bunhout the systek.

V& that

with all microphone switch& off and volumecontrols midway, only abarely audible

hiss

is heard.

The other two persons should sound equally loud and clear to the

third

person.

Page 8

2.7 Standard

User

Station Conneetiom

Dynamic Miaophone headset connector:

XLR-4-3 1 (female 4pin) receptacle (J102)

Input level

-55 dBu, nominal

Output level to hedphone

10 volts peak-to-* open circuit

Pin 1

-

Miuuphone low

Pin 2

-

Miaophone high

Pin 3

-

Headphone low

Pin 4 -Headphone high

Do not common pins 1 and 3.

Line input connector: J101)

XLR-3-3 1 receptacle (for singlechannel)

Pin 1

-

Common (low

side

of line)

Pin2-Power

Pin 3 - Channel

XLR-3-31 receptacle (for two-channel)

Pin 1

-

Common (low side of line)

Pin 2

-

Channel 1

(+DC)

Pin 3

-

Channel 2 (Audio)

*

For opemion on channel2 only

or

both channels if

so

modified May

also

beopemted on channel 1 by connecting using line cable with just two wires (canmon and

TW

channel 1) then tying pins 2 and 3 together at connector.

Table 2-1

Typical Operating Environments,

Environmental

Noise,

Smnd Ressure Lcvel, at 10 meters distance

SQuCx

AimatlR

Orchestra 75 piece, (Peaks) or

Pipe Organ. Pealis)

Rock

Concert

Piano, Peaks

Blaring Radio

Cenhif'ugal Ventilating

Fan

Auto on Highway

Vaneaxial Ventilating Fan

Voice, Shouting

Factory

Voice, Conversational

Residence

Television Studio

Voice, whispa

Seh,

1mdBto160dB

140 dB

110dBto140dB

120 dB

110 dB

110 dB

100 dB

90dB

90 dB

75 dB

70 dB

45 dB

25dBto35dB

30 dB

Table 2-2

Typical Operating Environments,

Soolld Prrsnrre Level, a t

Ear

SQUm SEL

Maximum Allowable Impulse 140dB

Exposure

LH267

+

BP317

10 dB below Clipping

DT109

+

BP3U

10 dB below Clipping

LHZ68

+

BP317

10 dB below Clipping

Setcom Series 5

+

BP317

10 dB below Clipping

114 dB

111 dB llOdB

99 dB

11OdB Headphones with 20 dB Acoustic

Isolation at 130 dB Rock Concert

(Mouth Closed)

Headphones with 40 dB Acoustic

Isolation at 140 dB Rock Concert

(Mouth Closed)

100 dB

Figure 3-1A

Front Panel, Model BP317 Portable Belt Pack User

Station

3-18

Rear Panel, Model BP317 Portable Belt

Pack User

Station

-

SECTION 3: OPERATION

3.1 Operating Controls And Connectio11~

Table 3-1 below lists the Model BP.17 user station wntrok and connectas. to the circled numbers in Figure 3-1.

3w&l

Ref.

&

Front Panel

&I.&

1 VOLUME control

MIC ON toggle

Sets the sound listening level in the user station headset headphones.

This thtteposition toggle switch allows the user to choose from two different MIC-ON pasitionx latching a momentary. The center toggle

&tim is

MIC-OFF.

be w e d on or

Lff without affecting the be oser station listen Gction. 5 s on when using a miaophone switch on the headset.

Rear Panel

INTERCOM

INPUT

("line") conneetor

3.2 Operation

To communicate directly with another station

or

stations:

This 4-pin female XLR connector is for plugging in a dynamic microphone type headset. A wide range of headset types may be used.

This 3-pin female XLR type connector connects the user station to the

Twsystemorsaies 17line.

1) Turn the volume control all the way counterclockwise (to the left) before plugging in the headset.

2) Set the MIC ON/OFF toggle switch to one of the "OW positions, either momentary or latching. If using a headset, this switch must be on before the microphone switch on the headset can be used.

3) Set the listening level in the headset using the Volume conml.

4) Spakinto the microphone.

Page 11

DIAGRAMS l3xmmRs

Document

N u D h

OD 5435

Sir&

Title

Outline Drawing, Belt Pack, Mode1

BF'317

rn

. . . . . . . . . . . . . . . . . . . . . . . . . . .

13

Servicing Assembly Diagram, (32-62 P.C. Assy for Model BP317 Portable Belt

Wck

User

Station

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

Schematic Diagram, Male1 BP317 Portable Belt Pack Uset Station, Sheet 1 of 1 . . . . . . .

15

ALL DIMENSIONS : [MU)

A

CC-62 PCB ASSY

E-

TOP VIEW

CC-62 PCB ASSY m

SIDE M

CC-62 P.C. ~ s s y wMklmli7Rrarblt

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61

'

DIODES

ARE

INSTALLED

WITH

CATHODES

DOWN