Circuit Cellar ECS2 -DX Manuel utilisateur

circuit

Cellar

4

Park

St.

Vernon,

CT

06066

Tel:

(2031

875-2751

Fax:

(203)

872-2204

ECS2

-DX

Assembly

Instructions

&

Procurement

List

Tools

Required

for

Assembly:

Low-Wattage

or

Temperature-Controlled

Soldering

Iron

Rosin-Core

Solder

(DO

NOT

use

Acid

Core!)

Lead

Cutters

Screwdriver

Additional

Tools

to

Ease

Assembly:

Needle-Nose

Pliers

Lead

Bender

Solvent

for

removing Rosin

(Flux)

Tools

for

Trouble-Shooting

(and

their

use):

Oscilloscope

Logic

Probe

Continuity

Checker

Volt/Ohm

Meter

Viewing

AC/DC

Signals

Indicating

Logic

Levels

(activity)

Determining

Shorted

or

Open

Traces

Checking

Power

Supply,

Logic

Levels,

or

Continuity

1.

(

)

PCB

Inspection

Before

beginning

assembly

of

the

HCS2-DX

board,

you

should

inspect

the

PCB

for

shorted

or

open

traces.

his

will

increase

your

assembly

time

slightly

but

it

is

well

worth

the

effort

compared

to

the

time

it

can

take

to

track

down

a problem

after

the

board

has

been

assembled.

The

easiest

way

to

do

this

is

to

hold

the

board

up

to

a

light.

You

should

then

be

able

to

see

all

the

traces

clearly.

Examine

each

trace

for

breaks

or

shorts

to

other

traces.

If

you

find

what

looks

to

be

a

short,

use

the

schematic

to

verify

that

the

traces

should

not

be

connected.

A

continuity

checker

or

a

VOM

can

then

be

used

to

deter-

mine

if

the

short

is

truly

there.

The

continuity

checker

or

VOH

can

also

be

used

to

test

for

a

break

in

a

trace.

You

should

also

check

for

continuity

between

the

Gnd

and

V+

pads

of

512. These

two

points

should

MOT

be

shorted

together.

2.

(

)

Parts

Inspection

The

is

to

familiarize

yourself

with

the

parts

to

be

installed

in

the

kit.

Parts

kits

may

be

purchased

from

Circuit

Cellar

or

you

may

obtain

the

parts

from

the

sources

listed

in

the

procurement

list.

All

Circuit

Cellar

kits

are

thoroughly

inspected

so

they

should

be

complete

and

accurate.

Regardless

of

how

the

parts

were

obtained,

check

to

make

sure

you

have

the

correct

parts

needed

and

the

correct

amount

of

each

part.

Note:

The

side

of

the

board

with

the

silkscreen

outline

is

the

component

side

and

the

opposite

side

is

the

solder

side.

All

components

should

be

mounted

on

the

component

aide

and

all

soldering

ahould

be

done

on

the

solder

side

of

the

board.

3.

(

]

Resistors

All

resistor

leads

are

spaced

an

0.4"

centers.

Please

note

that

R8

should

only

be

installed

if

the

board

will

be

powered

by

a

+5

VDC

supply.

Powering

the

board

with

a

higher

voltage

while

Re

is

installed

will

damage

the

board!

Insert

the

resistors

into

the

circuit

board,

bending

each

lead

over

to

prevent

the

resistor

from

falling

out.

Verify

that

each

part

is

in

its

correct

location.

Check

off

each

resistor

on

the

list

below

after

you

have

inserted

and

verified

them.

1

R1

470kn

Yellow

-

Violet

-

Yellow

1

R2

100R

Brown

-

Black

-

Brown

I

1

R3

470n

Yellow

-

Violet

-

Brown

l0kn

0

R4,R7

Brown

-

Black

-

Orange

I

R5

1Mn

Brown

-

Black

-

Green

I

1

R6

560n

Green

-

Blue

-

Brown

4

)

Rs

on

Black

(Note

special

instructions)

Solder

the

resistors

to

the

board

and

clip

the

excess

leads.

4

(

1

Diodes

All

diode

leads

are

spaced

on

0.4n

centers.

Diodes

are

marked

with

a

stripe

on

their

cathode

end.

This

stripe

should

match

the

stripe

on

the

silkscreen

when

the

diode

is

inserted

into

the

board.

Insert

the

diodes

making

sure

they

are

oriented

correctly,

Bend

each

lead

over

to

prevent

the

diodes

from

falling

out.

Verify

that

each

part

is

in

its

proper

location

and

that

it

is

oriented

correctly.

Check

off

each

diode

on

the

list

below

after

you

have

inserted

and

verified

them.

Solder

the

diodes

to

the

board

and

clip

the

excess

leads.

Locate

the

two

crystals

and

insert

them

in

their

appropriate

locations.

Bend

each

lead

over

to

prevent

the

parts

from

falling

out.

Verify

that

the

parts

are

in

their

proper

location.

Check

off

each

crystal

on

the

list

below

after

you

have

inserted and

verified

them.

(

XTLl

18.432

mz,

HC-~~/US

Case,

law

Profile

1

32.768

kHz,

Canister

Style

Solder

the

crystals

to

the

board

and

clip

the

excess

leads.

All

the

DIP

sockets

have

a

notch

in

one

end

to

indicate

1

which

must

match

the

outline

shown

on

the

silkscreen.

PLCC

sockets

have

an

arrow

pointing

toward

1

of

the

socket,

and

have

one

corner

of

the

socket

cut

off.

Note

that

the

PLCC

socket's

shape

must

match

the

outline

on

the

silkscreen

and

that

1

of

SK1

and

SKI6

is

closest

to

the

54

side

of

the

board.

Insert

all

of

the

sockets

into

the

board

making

sure

that

they

are

oriented

correctly

and

that

all

the

pins

protrude

through

the

board,

If

the

sockets

you

are

using

have

straight

solder

tails

rather

than

retention

type,

you

may

wish

to

tack

down

one

and

then

the

on

the

opposite

corner

to

hold

the

socket

in

place.

Once

the

socket

is

tacked

in

place,

you

can

verify

that

socket

is

flush

to

the

board

and

that

all

the

pins

are

protruding

through

the

holes.

Check

off

each

socket

on

the

list

below

after

they

have

been

inserted

and

verified.

44

PLCC

20

DIP

8

DIP

16

DIP

(no

socket

used

for

u7)

(

)

SK8,

SK12,

SK14

14

DIP

(

)

SK9,

SK10,

SK11,

SKI7

28

DIP

(

)

SK16

44

PLCC

Solder

all

the

socket

pins

to

the

board.

The

spacing

between

the

pins

is

tight,

especially

with

the

PKC

sockets,

so

care

must

be

used

when

soldering

so

that

no

solder

bridges

are

formed.

7.

(

Capacitors

C3-C7,

C10,

and

C9

are polarized

and

must

be

installed

with

this

in

mind.

These

capacitors

will

have

one

lead

marked

with

a

stripe

and

a

"+"

or

n-n

symbol

to

denote

whether

it

is

positive

or

negative.

The

remaining

capacitors

are

not

polarized

and

may

be

installed

either

way.

Insert

the

capacitors,

noting

polarity

where

appropriate,

and

bend

the

leads

over

to

keep

the

parts

from

falling

out.

Verify

that

each

part

is

in

its

correct

location

and

that

it

is

oriented

correctly.

Check

off

each

capacitor

on

the

list

below

after

it

has

been

installed

and

verified.

10pF,

118"

10pF,

Tantalum

(polarized)

O.lpF,

0.1OW

(104)

47pF,

Electrolytic,

Radial

(polarized)

Solder

each

capacitor

to

the

board

and

clip

the

excess

leads.

8.

(

Three

~ermiaal

Devices

and

LED

Two

different

styles

of

cases

are

used

for

the

three-terminal

devices

used

on

the

HCS2-DX.

Q1,

U7,

and

21

are

packaged

in

the

TO-92

style

case.

When

you

look

at

the

top

of

this

style

package,

the

device

is

shaped

like

a

circle

with

a

flat

This

shape

must

match

the

outline

on the

silkscreen

when

the

device

is

installed.

42

is

a

TO-220

style

case.

This

device

is

installed

with

a

heat

sink

(HS1).

When

installing

42,

place

the

heat

sink

on

the

board,

with

the

fins

up,

and

lay

Q2

on

top

of

the

heat

sink.

At

this

point

you

can

judge

how

the

leads

need

to

be

bent.

Bend

the

leads,

insert

42

into

the

board

and

secure

it

to

the

board

and

heat

sink

with

a

screw

and

nut.

Note

that

the

nut

should

be

installed

on

the

component

side

of

the

board.

The

LED

will

have

a

flat

side

or

notch

on

its

base

to

Identify

its

cathode.

This

flat

side

or

notch

should

line

up

with

the

flat

side

of

the

outline

an

the

silkscreen.

Verify

that

each

part

is

installed

in

the

correct

location

and

with

the

proper

orientation.

Check

off

each

device

on

the

list

below

after

it

has

been

installed

and

verified.

1

Ql

2N2907

Transistor

(TO-92)

1

Q2

LB7805

Voltage

Regulator

(TQ-220)

(

Hs1

Heat

Sink,

Screw,

and

Nut

(

u7

MC33064

Reset

Circuit

(TO-92)

zl

LM336Z-5.0

Voltage

Reference

(TO-92)

(

LED1

LED,

Red,

TIL220

Solder

each

device

to

the

board

and

clip

the

excess

leads.

9.

(

)

Resistor

metwork,

Potentiometer,

and

Battery

Bolder

The

resistor

network

(RN1)

has

one

marked

with

a

dot,

This

dot

should

line

up

with

the

"1"

on

the

silkscreen.

Insert

the

parts

into

the

board

and

bend

the

leads

over

to

prevent

them

from

falling

Verify

that

each

part

is

installed

in

the

proper

location

and

is

Ziknted

correctly.

Check

off

each

device

on

the

list

below

after

it

has

been

installed

and

verified.

1

RN1

4.7kn

SIP,

9

Element,

10

pins

I

).POT1

10M

Potentiometer,

Single

Turn

(

1

BH1

Coin

Battery

Holder

Solder

the

leads

to

the

board.

10.

(

)

Headers

Several

different

size

headers

are

used

on

the

HCS2-DX.

The

headers

do

not

have

long

leads

which

can

be

used

to

hold

the

parts

in

place

while

soldering.

Because

of

this,

the

headers

should

be

held

in

place

by

hand

and

pins

on

opposite

corners

tacked

on

using

a

small

dab

of

solder

on

the

solder

side

of

the

board.

Note

that

the

headers

are

constructed

wia

shorter

pins

on

one

side

of

the

base.

It is

these

shorter

pins

that

should

be

inserted

into

the

board.

Insert

the

headers

and

tack

them

in

place.

Verify

that

all

the

headers

are

straight

and

in

their

proper

locations.

Check.off

each

device

on

the

list

below

after

it

has

been

installed

and

verified.

[

53,

JP1

1x2

Square

Header

(

)

JP2,

JP4,

JPS

1x3

Square

Header

(

1

Jp3

1x4

Square

Header

1

Jp6

1x5

Square

Header

(

1

JP7

no

header

installed

at

this

location

(

1

s2

2x8

Square

Header

)

J4,

55,

J6

2x13

Square

Header

Solder

all

of

the

connector

pins

to

the

board.

11.

(

)

screw

Terminal

Blocks

The

terminal

blocks

should

be

tacked

in

place

like

the

headers

and

should

have

their

open

sides

facing

out

of

the

board.

Terminal

blocks

J7-Jll

should

be

combined

into

one

connector

by

sliding

them

together

before

installation.

Tack

all

the

terminal

blocks

to

the

board.

Verify

that

all

the

parts

are

oriented

correctly

and

that

they

all

fit

properly

on

the

board.

Check

off

each

part

on

the

list

below

after

it

has

been

installed

an

verified.

Screw

Terminal

Block,

2

Position

Side

Loading,

5

mm

Solder

all

the

terminal

blocks

to

the

board.

32.

(

1

cleaning Final Inspection

At

this

point

all

the

components

(except

for

the

ICs

and

the

battery)

should

be

installed

and

soldered

to

the

board.

To

facilitate

the

final

inspection,

we

recommend

that

the

board

be

cleaned

with

flux

remover.

Once

the

board

is

clean,

verify

once

again

that

the

compo-

nents

are

in

their

proper

location

and

oriented correctly.

You

should

also

inspect

the

solder

side

of

the

board

to

make

sure

that

all

the

leads have

been

soldered

and

trimmed,

Look

also

for

any

solder

bridges

and

shorted

leads.

13.

(

)

Voltage

Check

Before

inserting

any

ICs

or

applying

power

to

the

board

it

is

a

good

idea

to

check

for

shorts

between

the

power

supply

input

and

ground.

Use

a

VOM

to

check

the

resistance

between

the

two

pins

of

J12.

If

you

obtain

a

very

low

resistance

reading,

there

may

be

a

short

and

the

board

should

be

inspected

again

to

find

the

cause,

If

the

board

passes

this

test,

connect

a

power

supply

wi.th

an

output

of

between

9

and

12

VDC

to

terminal

block

512,

Remember

that

if

RB

is

installed,

only

a

+S

VDC

supply

should

be

used.

If

you

see

smoke

or

hear

popping

sounds,

disconnect

the

power

supply

immediately.

Check

the

board

for

shorts

and

polarized

capacitors

that

were

inserted

backwards.

Correct

any

problems

you

find

and

try

the

test

again.

If

everything

appears

normal

when

power

is

applied,

use

the

power

table

(located

on

the

last

schematic

page)

to

confirm

that

power

is

avail-

able

to

all

the

ICs,

14.

(

)

Final

Test

The

is

to

install

the

ICs,

jumpers,

and

battery,

Make

sure

the

power

supply

has

been

disconnected

from

the

board

before

installing

the

ICs,

Use

the

power

table

and

the

silkscreen

as

refer-

ences

for

installing

the

ICs.

Use

the

attached

jumper

diagram

as

a

reference

for

installing

the

jumpers.

Note

that

the

ICs

may

be

marked

with

a

notch

or

a

dot

to

show

the

location

of pin

1.

Remember

that

for

the

PLCC

devices,

U1

and

Ul6,

the

dot

must

align

with

the

arrow

on

the

socket,

Again,

1

of

Ul

and

U16

should

be

on

the

side

closest

to

connector

54.

The

battery

should

be

installed

with

the

positive

(+)

side

up.

Inspect

the

board

to

be

sure

that

all

the

ICs

are

firmly

seated

and

correctly

oriented.

You

should

also

watch

for

any

pins

that

may

have

bent

under

the

device

or

over

the

edge

of

the

socket.

At

this

point

you

should

connect

your

power

supply

to

the

board

and

apply

power.

If

you

don't

see

smoke

and

don't

hear

any

strange

noises

coming

from

your

board,

the

odds

are

in

your

favor

that

your

HCS2-DX

is

in

good

health.

The

is

to

calibrate

the

A/D

converter

reference.

Con-

nect

your

VOMis

positive

lead

to

12

of

U17

(ADC0808)

and

the

negative

lead

to

16

of

U17.

Adjust

POT1

until

you

obtain

a

read-

ing

of

5.00

volts.

For

the

final

test,

connect

a

serial

cable

from

the

board

to

your

PC

making

sure

that

1

of

header

connects

to

of

the

cable,

Now

run

the

HOST

program.

When

HOST

finishes opening

its

windows,

press

nTmt

to

load

the

current

time

and

date.

If

the

time

and

date

appear

in

the

upper

right-hand

window

and

the

seconds

are

incrementing

you

can

feel

confident

that

most

of

the

board's

functions

are

working.

Troubleshooting

If,

after

several

attempts,

you

cannot

get

the

HCS2-DX

to

respond

to

the

HOST

program,

try

the

following:

-

Check

your

power

supply

and

serial

communications

connections.

-

Use

a

VOM

to

verify

that

US

(MAX232)

is

producing

around

+9

V

on

6

and

around

-9

V

on

2.

-

Run

a

terminal

emulation

or

communications

package

on

your

PC

so

you

can

talk

directly

to

the

HCSZ-DX.

Use

an

oscilloscope

to

observe

the

receive

pin (pin

9)

of

US

(MAX232).

You

should

see

activity

on

the

when

characters

are

typed

on

the

keyboard.

-

Use

an

oscilloscope

to

verify

that

XTLl

is

operating.

-

Check

a11

the

address

and

data

lines

with

an

oscilloscope,

You

should

see

signals

that

are

steady

or

cycling

between

two

voltages.

Any

line

that

stays

at

a

solid

ground

or

5

volts

may

be

shorted

to

the

power

lines.

Any

line

that

jumps

between

more

than

two

voltage

levels

may

be

shorted

to

another

line.

-

Remove

U16

(8255)

and

U17

(ADc0008)

and

try

the

board

again.

If

a

chip

select

line

for

one

of

these

ICs

is

stuck

active,

they

may

be

dragging

down

the

bus,

If

removing

the

chips

fixes

the

board,

check

their

chip

select

lines

for

shorts.

-

Inspect

all

of

your

solder

joints

again,

checking

for

missed

pins,

solder

bridges,

and

poor

solder

joints.

A

solder

joint

should

be

smooth

and

shiny,

If

a

joint

looks

dull

or

somewhat

crystalline,

resolder

the

joint,

A

large

number

of

inoperable

boards

can

be

fixed

simply

by

correcting

soldering

mistakes.

If

you

have

purchased

the

full

kit

from

Circuit

Cellar

and

are

unable

to

get

your

board

working,

we

do

offer

a

repair

service.

For

a

flat

fee

of

$75.00

we

will,

at

out

discretion,

repair

or

replace

the

board.

Please

note

that

we

can

only

offer

this

service

for

kits

which

have

been

assembled

with

our

parts.

Therefore,

this

offer

does

not

apply

to

boards

assembled

using

our

partial

kit

or

parts

procured

from

sources

other

than

Circuit

Cellar.

If

you

wish

to

take

advantage

of

this

service,

please

contact

circuit

Cellar

at

(203)

875-2751to

obtain

an

RMA

number.

The

board

and

a

check

or

money

order

can

then

be

sent

postage-paid

to

us.

Please

note

the

RMA

number

on

the

outside

of

the

package

so

that

it

will

be

directed

to

the

correct

department.

ftsms

Circuit

Cellar

HCIIP-DX

Technical

Manual

and XPRESS

Boftware

Kanual

The

HCS2-DX

technical

and

XPRESS

software

manuals

are

available

for

downloading

from

the

Circuit

Cellar

BBS

as

HCSDXMAN.ZIP

and

XPRSW.ZIP

in

the

Home

~utomation

file

area.

printed

and

bound

versions

are

packaged

with

the

partial

and

full

kits.

They

are

also

available

separately

from

CCI

for

$10.00

each.

Please

request

HCS2DX-MAN

or

XPRESS-MAN

when

ordering.

~~82-DX

Firmware

The

hex

file

for

the

version

2.0

HCS2-DX

firmware

is available

for

downloading

from

the

Circuit

Cellar

BBS

as

HCSZO.HEX

in

the

Home

Automation

file

area.

A

preprogrammed

27256

EPROM

containing

the

code

is

included

in

the

HCS2-DX-PART

and

HCS2-DX-FULL

experimenters

kits.

The

source

code

for

this

firmware

is

NOT

available

except

under

license.

A

51",

360K

diskette

containing

the

COMPILE

and

HOST

version

2.0

programs

for

DoS

is

packaged

with

the

HCSZDX-1

and

HCS2DX-2

kits.

It

is

also

available

for

downloading

from

the

Circuit

Cellar

BES

as

HCSPC20,ZIP

in

the

Home

Automation

file

area.

If

you

are

not

buying

a

HCS2-DX-PAFtT

or

HCS2-DX-FULL

kit

and

don't

care

to call

the

BBC

for

the

software

and

manuals,

you

can

order

printed

manuals,

an

EPROM,

and

the

utility

diskette

for

$39.00

plus

shipping.

An

experimenters

kit

containing

a

64180

PLCC

processor,

processor

crystal,

MC33064

power

fail

indicator,

PLCC

82C55

PPI,

and

a

DS1215

clock

chip

is

available

from

Circuit

Cellar.

The

kit

also

contains

the

version

2.0

EPROM,

diskette

with

COMPILE

and

HOST,

and

the

HCS2-DX

Technical

and

XPFU3SS

software

manuals.

The

partial

kit

is

priced

at

$89.00

plus shipping.

Please

request

part

number

HCS2-DX-PART

when

ordering.

BCB2-DX

Experimenters

Kit

(Full)

A kit

containing

all

the

parts

necessary

to

complete

the

HCS2-DX

along

with

the

version

2.0

firmware,

a

diskette

containing

COMPILE

and

HOST,

and

the

HCS2-DX

technical

and

XPRESS

software

manuals

is

avail-

able

from

Circuit

Cellar

for

$149.00

plus

shipping.

Please

request

part

number

HCS2-DX-FULL

when

ordering.

XPRESS

2.1

allows

the

use

of

the

new

HCS-VOICE

and

HCS-DTMF

boards

with

the

HCS2-DX.

You

can

upgrade

the

partial

or

full

kits

for

$25.00

when

the

upgrade

is

ordered

with

one

of

the

kits.

The

XPRESS

2.1

upgrade

is

$39.00

when

ordered

separately.

HCSZ-

DX

PROCUREMENT

UST

hge

2

1x5

SQUARE

HEADER,

.Ia

SPACING,

.31SU

HElGHT

1~~6

1

F

12440-6212TG-~~

1 1

57

I

-

41029760

;2XS

SQUARE

HEADER.

.IgSPACING,

318'

HEIGHT

112

I

P

12480-6222~~-~~

(371-41029770

1x2

SQUARE

HBADER.

.I'

SPACIN01.318*

PlPI

HEIGHT

1x3

SQUARE

HEADER,

.I'

SPACING,

31%'

PIN HEIGHT

1x4

SQUARE

HEADER,.

I'

SPACING,

.318'

HEIGHT

74W2

-

LS

lTL

QUAD

2

INPUT

OR

GATE

I

U12

1

F

1~~74~~32~-ND

147~32

1511-74~32

14LS139

-

LS

Tn,

DUAL2

TO

4

DECODER

I

~13

1

F

1~~74~~139~-ND

174~139

1511-74~139

J3,

JP1

JP2JP4JP5

IP3

]

2x13

SQUARE

HEADER,

.In

SPACING,

.Sm

OR

-318'

HGT

1~~5~6

1

F

12480-6222m-~~

2

1

174LS245

-

LS

7TL

OCTAL

BUS

TRANSCEIVER

1

U2,U3

I

F

1~~74~~245~-ND174~245 I~Il-74tsz45

1

57

1

-

41029770

MAX232

3V

RSt32

DUAL

RECEIVEWANSMI'ITER

HD64

180

MlCROPROCESSOR

(68

PLCC)

SN751768

-

RS-485

TRANSCEIVER

62236

SRAM

32K

X

8

8255

-

PIIO(IRAMMABLl3

PERIPHERAL

INTERFACE

(PEC)

ADCO808

8-CHANNEL,

8-

BITND

CONVERTER

NMC9346

1024-BIT

EEPROM

(OPTlONAL)

7425

-

lTL

DUAL

4-

INPUTNOR

GATE

WITH

STROBE

DSlZlS

PHANMM

TIME

CHIP

EPROM

27236,

HCD-

DX

FlRMWARE

F

174~~14

-

LS

Tn.

HEX

INVERlER

WITH SCHMIlTTRIGGER

I

UB

I

F

1~~74~~14~-ND17425'74L514 1511-74~14

U

11,

(U

10

-

optional)

1

P

I

SRM~AZ~~SW~S-ND

1~~62256~~-

12

1551-43256~~-

10L

U16

I

F,?

1

no

suggested

mall

quantity

source

2440-6212TO-ND

2440-621ZTG-

ND

U5

U1

U4

*5555

,

R8

should

only

be

installed

if

the

bard

is

to

bt

ma

off

+5

VDC

ONLY!!!

F

-

An

experimenter's

full

kit

containing

these

parts

is

available

from

CCL

Please

call

for

pricing.

37

1

-41029760

57

1-41029743

571

-41029760

P

-

An

experimenter's

padial

kit

containing

these

parts

is

availnMe

from

CCI.

Please

MU

for

prieing.

P

F,P

F

E

-

The

27C256

included

with

tht

experimenter's

kits

mmes

preprogrammtd

with

V2,O

of

the

DX

firmware.

Tht

parts

available

fmm

the

other

three

souras

comeunprogrammed.

A

hex

iilc

cantaining

the

DX

limwart

is

available

for

downloading

from

the

CCI

BBS

at

(203)

87

1

-

1988.

MAX232CPE-ND

1

MAX232CPB

no

suggested

mall

quantity

source

DS751763N-ND

175176

1

Souroes

CCI,

4

Park

St.,

Vernon,

CT

06066,

Tel:

(203)

875

-

2751

Fax:

(203)

872-2204

Purc

Unobtainium,

13109

Old

Creedmoor

Rd,

Raleigh,

NC

27613

-7412,

Tel:

(919)

676-4525

[Offers

many

of the

hard

to

Gnd

parts,

send

$1

for

catalog]

Digi

-Keyl

701

Bmks

Ave.

South,

Thief

River

Falls,

MN

56701,

Ttl:

(800)

344-4539

JDR

Micmdevices,

2233

Samaritan

Dr.,

San

Jose,

CA

95124,

Tel:

(800)

538-5000

Mouser,

2401

Highway

287

North,

Mansfitld,

TX

76063-4827,

Tel:

(800)

346

-

6873

This

prmrement

list

was

developed

as

an

rid

for

kit

builders

in

locating

pans

for

tho

HmZ-DX.

Thc

listings

art

taken

from

the

latest

available

cetalogs

of

a

few

companies

that cater

to

low

volume

buyem

We

have

tried

to

makt

mre

that

thcrc

arc

no

crron

but

catalog

lishgs

often

change.

TO

be

sure

of

ordering

the

mmct

components,

we

suggest

you

contact

the

sources

and

obtain

their

latest mtalogs,

We

take

no

rcsponibility

for

changes

in

catalog

listings

or

availability

hct

it

is

htyond

our

cant

rol.

This

procurement

list

is

offered

as

an

aid

and

is

not

an

cndorstmcntof

any

company

or

product.

Circuit Cellar ECS2 -DX Manuel utilisateur

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