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u

U

i_i

Installation

and

Operation

of

the

Eventide

ECW-40

Satellite

Chronometer

u

u

u

U

Eventide

ECW-40

U

I

u

Third

Edition,

March

1997

Software

version

1.4

1992-1997

Eventide

Inc.

lAlsanWay

Little

Ferry

NJ

07643

USA

201-641-1200

http://www.eventide.com

[email protected]

U

u

ij

Table

of

Contents

U

b

i

.

1

!

ij—

EC::W-40

Quick

Setup

Introduction

g

Menu

Structure.

g

The

"Top"

menu

8

OperadcHi

of

pushbuttmis

8

The

Clock

screen

9

The

Slave

soeen

9

The

(GPS)

Status

screen

9

The

GPS

Raw

Data

screen

10

The

(GPS)

Grq>h

screen

12

The

(GPS)

Warning

screen

13

Setting

Up

the

ECW-40

Configuring

the

Clock

screen

14

Selecting

a

Clode

screen

display

17

Customizing

the

Clodc

screen

18

Changing

tl^

screen's

bri^itness

20

Security:

"Locking"

the

dock

20

Unlod^g

the

clock

21

Serial

Communication

Configuration

(RS-232/485)

22

Selecting

a

format

22

Omfiguring

a

fonnat

23

Activating

timecode

output

24

RS232/485

output

protocols

25

Cable

connections

to

external

devices

26

Specifications

29

Warranty

31

Index.

32

ECW-40

with

Eventide

modd

VR240

Logging

Recorder

-

Set-uplnstructions

appendix

i

ECW-40

with

Eventide

modd

VR204

Logging

Recorder

-

Set-up

Instructions

q>pendix

ii

ECW-40

with

Eventide

Logging

Recorders

-

RS432/RS485

Cable

Diagram.

appendix

iii

Eventide

ECW-40/March

1997

u

u

u

ECW-40

Quick

Setup

WARNING:

Connect

antenna

cable

before

applying

power

to

the

ECW-40.

u

y

LI

L

L

1.

Connect

your

GPS

antenna

to

the

rear

panel

BNC

connector

l^)eled

GPS

ANTENNA.

2.

Connect

the

power

supply

to

the

rear

panel

labeled

POWER

IN,

and

plug

the

AC

power

cord

into

an

AC

outlet

3.

After

briefly

flashing

an

introductCHy

screen,

the

ECW-40

displ^s

a

date

and

time

screen.

The

date

and

time

m^

or,

more

likely,

m^

not

be

accurate.

4.

Press

the

pushbutton

labeled

Top.

Then

press

the

pushbutton

labeled

Status.

5.

Press

the

pushbuttcm

labeled

GPS

Data

and

note

the

line

"GPS

data

is

not

valid."

6.

Watch

the

screen

as

the

clock's

GPS

receiver

searches

for

satellites.

In

a

minute

or

two

the

message

"GPS

data

is

valid"

should

appear,

and

your

clock

is

set

If

not,

try

reciienting

your

antenna

until

"GPS

data

is

valid"

is

displ^^

(If

your

clock

has

been

moved

a

large

geographic

distance,

it

may

take

longer

to

lock

on

-

inidicated

by

"CS"

on

line

four

in

the

STS

(status)

column

on

the

GPS

Raw

Data

Screen.

See

page

10

for

mem

informatioa).

7.

Press

Top

and

observe

the

message

"Last

Valid

GPS

Time:

(xxrxx

xx/xx/xx)."

Then

press

Gock

to

display

the

current

GPS-accurate

date

and

time

(remember

that

you

have

not

yet

configured

your

clock

for

any

particular

time

zone).

Li

U

Eventide

ECW-40/March

1997

IntroductioD

WARNING:

Connect

antenna

cable

before

applying

power

totlieECW-40.

Congratulations

on

your

purchase

of

an

Eventide

ECW-40

Satellite

ChrcmOTieter,

a

precise

time

base

fw

synchronizing

entire

systems.

Unlike

other

time

measurement

systems,

the

ECW-40

works

anywhere

on

earth,

anytime,

and

under

any

weather

conditions.

The

ECW-40

is

a

unique

product

that

can

provide

a

primary

source

of

traceable

and

reliable

time.

It

meets

the

critical

requirement

of

providing

legal

external

time

synchronization

for

public

safety,

transportation,

and

fi

nance

communication

systems,

and

can

assure

accurate

event

logging

and

billing

for

telephone

and

power

utilities.

Users

of

digital

^^nmtwimtnitinn

logging

recOTders

sudi

as

the

Eventide

models

VR240

and

VR204,

and

the

Dictaphone

9800,

will

fi

nd

that

the

ECW-40

serves

as

an

extreme^

accurate

time

and

date

source,

providing

an

external

refisence

standard

to

eliminate

any

possible

drift

inherent

in

these

umts'

mtonal

clocks.

A

single

ECW-40

can

serve

as

a

master

reference

clodc

for

a

group

of

such

recmders.

The

ECW-

40's

extra-large

display

can

also

be

switched

to

show

the

tecmded

time

and

date

infoimatimi

of

an

audio

channel

as

it

is

being

played

back

fi

mn

a

cmmected

logging

recorder.

This

mode

is

ideal

for

use

when

time

informatioa

is

being

observed

1^

several

peqple

frcun

a

distance~f(X'

example,

in

a

large

ccmtrol

romn-or

when

tapes

are

being

played

as

evidence

in

a

courtnxm

The

Global

Positioning

System

receiver

in

the

ECW-40

requires

an

external

antenna

for

premier

(^leration

and

to

maintain

accurate

time.

Eventide

siqiplies

two

ty

pes;

(me

mounts

(m

a

window,

the

other

is

mounted

outdoors.

Eventide

ECW-40/March

1997

n

n

n

n

The

ECW-40

uses

the

Global

Positioning

System

(GPS)

based

on

satellite

data

and

intemal

ECW-40

calculations,

All

ouqiuts

are

user-configurable

and

extremely

accurate.

The

ECW-40

can

display

time

fr

om

^

an

external

RS-232/485

time

source

on

any

of

20

of

its

selectable

clodc

screens

or

on

one

of

three

user-

|

i

designed

screens.

The

ECW-40

uses

the

most

modem

technology

available

It

has

a

built-in

GPS

receiver,

I

which

simultaneously

receives

time

signals

fr

om

multiple

orbiting

satellites.

Accuracy

is

maintained

to

within

plus

or

minus

one

microsecond.

Battery-backed

random

access

menxxy

(RAM)

saves

user-set

H

informatioa

in

the

event

of

a

power

interruption.

'

J

Locate

the

clock

for

convenience

in

connecting

cables

for

AC

power,

antenna,

and

perh^s

to

external

devices.

The

clcmk

is

designed

to

operate

indoors

with

no

extremes

of

tenqierature

or

relative

humidity.

|

The

clock

w(m't

need

to

be

moved

often,

but

if

you

use

optional

features

that

retpiire

regular

access

to

the

7-]

rear

panel

ofthe

clock

you

will

want

to

make

it

easity

accessible.

{

A

single

Eventide

ECW-40

can

supply

the

time

reference

to

several

devices,

such

as

voice

logging

n,

recorders,

communicaticxi

omsoles,

ccmqiuter-aided

dispatch

systems,

and

hi^-visibility

wall

clocks.

When

100%

redundancy

is

required,

two

ECW-40S

can

be

programmed

to

work

together.

Software

designates

one

as

the

master

and

the

other

as

the

backup.

If

the

master

detects

a

failure,

it

automatically

switches

to

the

backup's

output,

providing

full

redundancy.

If

you

have

purchased

a

second

ECW-40

f(»'

a

backup,

you

may

want

to

mount

the

two

clocks

side-by-side

so

connections

can

easily

be

made

if

the

master

unit

stould

fad.

The

installati<»

consideratioas

appty

to

bodi

a

master

ECW-40

and

a

backiqr

unit

n

u

u

u

U

■

{

u

ti

I

u

Both

window

and

outdoor

antennas

need

a

clear

view

of

the

sky

to

provide

reliable

reception.

Window

mounted

antennas

should

be

placed

with

the

sticker

facing

out

or

as

shown

in

the

antenna

mounting

kit

manual.

The

cable

(feedline)

should

run

fr

om

the

antenna

to

the

GPS

ANTENNA

connector

on

the

back

of

the

ECW-^O

(be

sure

to

connect

a

feedline

to

this

connector

before

applying

power

to

the

clock).

i

'

Ifyou

are

installing

a

signal

amplifier

or

surge

(lightning)

suppressor,

connect

it

in

series

with

the

antenna

ij

ferine.

If

you

own

a

back-up

ECW-40,

you

can

install

a

separate

antenna

for

each

clock

or

use

a

signal

"splitter"

to

feed

both

clocks

fr

om

one

anteima;

it's

also

ok^

to

nxMmt

separate

antennas

side

by

side

(but

not

overlapping).

An

outdoor

roof

or

a

tower-mounted

antenna

should

be

placed

with

the

connector

side

facing

down,

toward

the

ground.

Follow

the

mounting

kit

instructions

on

mounting

the

antenna

to

the

roof

or

tower

for

best

results.

Connect

a

signal

amplifier

or

surge

suppressor

in

series

with

the

feedline,

at

the

clock

end.

A

mast-mounted

antenna

should

be

placed

on

a

sturtfy

mount

and

screwed

cm

securely.

Connect

the

BNC

plug

on

the

end

of

the

feedline

to

the

back

of

the

ECW-40.

Please

remember:

alw^s

disconnect

the

ECW-40

fr

om

AC

power

before

either

connecting

or

disconnecting

the

antenna

feedline.

Eventide

ECW-40/March

1997

Menu

Structure

Setting

up

the

ECW-40

to

meet

your

needs

is

done

through

a

series

of

on-screen

"menus."

If

you

have

done

the

"Quick

Setup"

on

page

fi

ve

you

alreacfy

have

seen

the

fi

rst

of

these

menus.

The

six

pushbuttons

below

the

clock's

display

access

these

menus

for

set-up.

They

also

give

quick

access

during

operation

to

screens

containing

infonnation

you

may

wish

to

see.

When

fi

rst

plugged

in,

the

clock

displ^

a

title

screen

and

then

switches

direct^

to

a

display

of

the

current

day,

calendtf

date,

and

time.

That

screen

is

shown

on

the

title

page

of

this

manual

and

is

referred

to

as

the

Clock

screen.

To

exit

the

Clock

screen,

press

any

one

of

the

"sofikeys"-the

four

center

pushbuttons-or

the

T

op

key,

to

display

the

Top

menu,

as

shown

below.

If

you

are

starting

your

clock

for

the

fi

rst

time

you'll

see

a

screen

similar

to

this:

r-

Eventide

ECW-40

Satellite

Chrooometer

Topsenea

The

four

(center)

softk^

are

now

labeled

Configure,

Status,

Slave,

and

Oock.

From

this

point

on,

no

matto*

where

you

are

in

die

menu

structure,

any

time

you

press

Top,

it

will

take

you

directly

to

this

To/y

screen.

This

allows

you

to

make

setup

changes

and

then

return

directly

the

C/ock

screen.

The

Top

screen

always

shows

die

most

recent

time

that

the

unit

received

valid

GPS

infonnatimi,

and

the

last

time

the

unit

recdved

a

tune

fi

om

an

external

ti

me

smirce.

From

die

Top

screen,

you

can

move

directly

to

screens

diatdi^hQr

detailed

GPS

satellite

tnfcxmation

as

well

as

diange

the

setiqi

of

the

clock.

The

four

(center)

softk^

operate

as

follows:

Configure:

Choose

fr

om

Set

Cock,

Hardware,

Presets,

and

Outputs.

Status:

Choose

between

GPS

Data

and

a

Graph

of

GPS

data.

Configure

Warning

options

or

Reset

the

GPS

receiver.

Slave:

Displays

the

time

as

received

fr

om

an

external

source.

Oock:

Returns

to

the

Clock

sacca.

;

/

Eventide

ECW-40/March

1997

u

L-;

The

Oock

Screen

u

U

Any

time

you

press

the

Oock

softkey

the

GPS-synchrooized

time,

day

and

date

are

ordinarily

displ^ed

on

the

entire

screen

(other

information

will

be

displayed

on

the

Clock

screen

if

it

has

been

user-selected;

see

pages

14

and

15).

From

the

Clock

screen,

pressing

any

of

the

six

keys

displays

the

Top

screen,

unless

the

clock's

security

feature

has

been

enabled

(see

pages

15

and

16).

The

time

display

typically

includes

a

colon

(:).

If

you

have

opted

to

be

warned

of

GPS

status,

the

colon

will

blink

if

GPS

data

is

not

valid

and

the

time

ms^

or

m^

not

be

accurate

(see

GPS

status,

below).

The

Slave

Screen

From

the

top

menu,

the

Slave

softkey

displays

the

time

the

ECW-40

has

received

fr

om

any

external

device;

the

default

value

is

12:00:00.

Pressing

any

of

the

six

softkeys

fr

om

the

Slave

screen

displays

the

Top

screen.

The

Status

Screen

The

Status

screen,

selected

fr

om

the

Top

screen

menu,

presents

choices

for

displ^ong

raw

GPS

information.

From

the

Status

screen

menu,

you

can

access

GPS

receiver

information

(GPS

Data),

including

satellite

tracking

and

position;

a

28-hour

history

graph

of

satellite

reception

(Graph).

From

this

screen

you

may

also

select

if,

wlien,

and

how

GPS

warnings

are

displayed.

You

m^

also

Reset

the

GPS

receiver

fr

om

here.

(Reset

is

for

extreme

circumstances

only;

see

page

10.)

u

Eyentide

ECW-dO

Prev

SatdUte

Chronometer

Gi«Dst<il

mm

%'m

iff

Top

'

i

u

u

"ui

Eventide

ECW-dO/March

1997

Status

screen

U

The

GPS

Raw

Data

Screen

The

GPS

Raw

Data

screen

displi^s

ftal-dme

GPS

information

and

allows

you

to

watch

the

Global

Positioning

System

at

work.

Eventide

ECW-40

Sctellite

Chnmometer

>

'

n.CTS

Bawf

nrno

Prev

RDOMQ

yrrr

fff

'

''^

i

xfSgxgagg^atfwff^^ggSsg^sgsMSswggfeHgajma^ag^^

GPS

Raw

Data

screen

The

only

keys

used

with

this

screen

are

Prev

andTop.

GPS

data

is

valid:

GPS

date

and

time:

GPS

longitude

and

latitude:

GPS

ALT:

Indicates

when

the

GPS

data

(position

and

time)

is

valid,

i.e.

when

the

GPS

receiver

is

in

Navigation

mode

and

three

or

more

satellites

are

being

tracked.

The

time,

in

Greewicfa

Mean

Time

(GMT,

or

UTC)

onty,

and

date

according

to

the

GPS

receiver.

The

longitude

and

latitude

of

your

clock

site.

A

number

derived

fi

om

GPS

receiver

information

apfuoximatingyour

site's

altitude

above

sea

level

(ASL)

in

feet

This

display

is

provided

onfy

as

a

further

indkatkn

that

the

GPS

receiver

is

at

work.

Operatiooiil

lmiitati(»s

imposed

by

U.S.

Department

of

Defense

prevent

the clock

fr

om

providing

an

accurate

readout

of

ASL

altitude.

H,V,P,andGDOP

(Dilution

of

Precisitm):

Information

derived

fi

om

GPS

receiver

operaticm

relating

to

enYH-

correction;

the

lower

the

number

the

better.

This

information

is

not

used

in

normal

clock

operation.

(Abbreviations

are

(II)orizontal,

(V)ertical,

(G)eometric,

and

(P)osition.)

CH

(Channel

Number):

The

fi

ve

GPS

satellites.

An

asterisk

(*)

indicates

a

"spare"

chaimel.

Eventide

ECW-40/March

1997

10

u

y

u

u

u

S

(Channel

status):

The

current

status

of

each

of

the

Gve

tracking

satellites

as

follows:

0

==

Idle

state

1

-

Search

in

progress

for

a

satellite

S

-

Receiver

locked

on

a

given

satellite

SV

(Space

vehicle):

The

numbers

assigned

by

the

U.S.

government

to

each

satellite.

CN

(Carrier

to

noise

ratio):

EL:

AZI

(Azimuth):

STS

(Status):

Signal

strength

fr

mn

each

satellite.

The

higher

the

number,

the

stronger

the

signal.

Readings

should

range

fi

om

the

upper

20s

to

low

50s;

a

reading

of

zero

indicates

no

signal

present

on

the

channel.

Elevation

of

the

satellite

above

the

hmizon,

fr

om

0

to

90

degrees.

Position

of

the

satellite

off

the

horizon,

fr

om

0

to

360

degrees.

The

entire

ECW-40

GPS

system

status

as

follows:

—H

(or

—U):

OPS

receiver

function

indicators

not

used

in

normal

clock

operation.

NAV

(navigational):

The

GPS

receiver

is

"^locked"

and

date

and

time

are

valid.

Altematively,

ACQ

indicates

that

the

system

is

acquiring,

i.e.,

in

the

locking

process.

4

indicates

that

the

^stem

is

using

four

satellites;

i.e.,

is

locked

and

valid.

WS

indicates

that

the

system

was

"warm

started."

CS

would

indicate

that

the

system

was

last

"cold

started."

After

fi

rst

use

the

ECW«40

stores

information

in

non-volatile

memory;

if

the

clock

is

turned

off

and

then

turned

on

again,

the

search

for

a

satellite

lock

is

faster,

thanks

to

this

stored

information.

If

the

ECW-40

is

moved

a

large

geographical

distance

the

clock

will

take

longer

to

lock

on

because

the

stored

presets

will

not

necessarily

be

valid.

If

all

else

fails,

pressing

Reset

fi

rom

the

GPS

Status

screen

will

clear

tite

ECW-40's

memories

and

allow

it

to

restart

anew.

7

is

a

"figure

of

merit,"

a

measure

of

accuracy

based

on

Dilutirm

of

Perception

(see

page

9).

A

7

or

12

indicates

the

unit

is

locked

on.

No

lock

will

be

indicat^

by

the

fi

gure

500.

u

u

Eventide

ECW-40/March

1997

11

n

The

Graph

Screeo

The

Graph

screen

displays

satellite

tracking

infonnation

over

the

previous

28

hours.

This

infnfmat^n

enables

you

to

position

your

GPS

antenna

in

dififerent

locations

based

on

the

quallQr

of

GPS

reception.

The

GPS

receiver

has

5

channels

that

can

lock

on

up

to

9

satellites

at

once.

The

graph

displi^

the

average

number

of

channels

locked

onto

satellites

at

(Hie

time.

(Ran^

is

0

to

5)

The

Graph

screen

enables

you

to

watch

how

antenna

placement

has

affected

your

GPS

reception

and

allows

you

to

reposition

your

antenna

for

best

performance.

Fourteen

hours

after

moving

your

antenna,

the

Graph

screen

gives

you

a

full-screen,

side-by-side

"beftne

and

after"

of

antenna

performance.

The

example

below

shows

how

a

typical

Graph

screen

looks

after

seven

hours

of

successful

receptioa

Eventide

ECW-40

Prev

Satdlite

Chroaoineter

Grqpift

screen

r>,

■

V

Eventide

ECW-40/March

1997

12