Metra Electronics DAT Combo Bedienungsanleitung PDF herunterladen (Seite 106)

Heath

AD

-16

Recorder

(:untinurd

fl

nnr

pap, ,11

sustained

400 Hz

and

15 kHz tones for

both

azimuth

and bias adjustments,

using

the

built -in

VU

meters as

indicators. For

those

who prefer

it,

an

instrument alignment

pro-

cedure is

described, although

it is neither

easier nor

better than that

with

the test

tape.

How It Performed.

The actual frequency

response of the AD

-16

is

shown

in

Figs.

1

and 2.

Although the response "wavers,"

it is

well within Heath's specs

which

are given

in the table. (The "waver,"

by the

way, is

normal

with

professional

recorders that

don't

attempt

to

get

a "ruler

flat" frequency re-

sponse

by excess equalization

at the expense

of

substantially

higher

high- frequency dis-

tortion.)

The 1 kHz THD (total

harmonic

distor-

tion) was right on the

button of Heath's

claims. In fact, a

record input

level that

exceeded

0 VU did not noticeably

increase

the reference

distortion

of 1.5%

THD, even

with the

pointer

full

into

the

"red region"

at

+3 VU. The noise level

was a shade poorer

than Heath's claims

-at

71/2 ips it

measured

-49

db

on the right

channel and

-45

db

on the left channel

(referenced

to

3%

THD).

The AD -16's price

of $399.50

represents

only the

recorder;

the

walnut

base

is an op-

tional extra at $19.95.

For

additional

infor-

mation

write

to Dept.

EB,

Heath

Co.,

Ben-

ton Harbor, Mich.

49023.

SPECIFICATIONS

Speeds -71/2

and

31/4

ips

Wow and flutter-0.18%

at

71/2

at 31/4

ips

Max. reel size -8'/4

in.

Freq.

response lrecord /playback)

-±2

db,

45

to 18,000

Hz

at

7'/2

ips;

±3 db, 30

to

10,-

000

Hz

at

31/4

ips

Signal

-to

-noise

ratio -52

db or

better at

7'/7

ips (referred

to 3°,0

THIN

THD -less

than 1.5

°ó

at

0

VU

record

and 0

VU

playback

Output-Phone jack:

1 volt unloaded at 0

VU.

Monitor output:

1

volt

unloaded at 0

VU.

Tape

output:

1

volt

at 0

VU.

ips; 0.25%

.,1,1,,,,11,,,,,,,

,,,,o,,,.,ma.,,,,,,,..,,na.mim.n,o,,,,om,,lin,,

Spy

in the

Tie

Continued

from

page 53

right through

the case....

If desired,

melt

a

hole opposite

the adjusting

screw

of C5

-so

you can change

frequency

without removing

the

transmitter

from

the case.

Checkout.

Insert

the

battery into

the clips

-get the polarity

right

-close

the

case,

place

an

FM receiver

near the

transmitter,

and

place the

mike

near the

receiver's

speaker.

As

you

tune the

receiver

you can't

miss the

transmitter's

frequency,

the

feedback

will be

unbearable.

To

change

the transmitter's

fre-

quency, adjust

C5 until

there is no

interfer-

ence

from

strong

FM- broadcast

stations.

Protecting

yourself.

To use

the Tie -Spy,

clip

the

mike to your

tie, place

the transmitter

in your

trouser's

side pocket,

and run

the

antenna

around

your

waist under

your

belt

or under the

back

of

your

shirt,

or

wherever

you prefer.

The effective

transmitter

range

will be about

25 to 50

feet.

Don't try

to

speak

directly

into the

mike as

the gain

is

very high and the

modulation

will severely

"pop" -the gain

is

designed

to pick

up

voices

from

one to three

feet. Naturally,

the better

the

mike the

better

the reproduction.

A Note

of

Warning.

The

transmitter

114

must operate

between

88 and

108

MHz

(mc) and it

must

not

interfere

with

a com-

mercial broadcast

signal. And the

transmit-

ter must

be certified

by

an

electronics tech-

nician

that it

has

no

spurious emissions

and

conforms

to

FCC requirements.

For

more

details concerning

wireless -mike FM trans-

mitters

we

suggest

you

write to

the

FCC,

Washington, D.C.

20554 and request

Bul-

letins 11 and 12 concerning

FCC

rules per-

taining

to

license

-free,

low

-power transmit-

ters.

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.,,,,,.

1,,,,,.NI.....1..1,.,.,,,,.,,0,,,,1,11,,,,,....,-111M,..M..,

RADIO -TV

EXPERIMENTER

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