Myryad Mt 100 Manuale utente

mt 100

FM Stereo Tuner

Owner’s manual

Myryad Systems Ltd

2 Piper’s Wood

Waterberry Drive

Waterlooville PO7 7XU

Tel +44 (0) 23 9226 5508

Fax +44 (0) 23 9223 1407

[email protected]

For further information,

please contact

Myryad direct or visit:

www.myryad.co.uk

MT 100 FM Stereo Tuner

English MT 100 ok 29/1/01 10:20 am Page 2

content

• Introduction 2

• Installation and safety notes 2

• Accessories 2

• Setting up your system 3

• Rear panel connections 3

• Operating your system 5

• Front panel controls 5

• Remote control 6

handset operation

• Antenna 7

• Trouble-shooting guide 7

• Spefications 7

introduction

The Myryad MT 100 FM Stereo Tuner has

been designed to offer a combination of

high quality sound reproduction, ease of use

and elegant styling in keeping with other

Myryad products.

The MT 100 is a full-function remote-

controllable FM Stereo Tuner. It has

ﬁxed-level low-impedance audio outputs

to feed a Myryad integrated ampliﬁer or

preampliﬁer – or other high quality ampliﬁer.

A coaxial antenna socket is provided for a

75Ω FM radio (Band 2) antenna. In addition

the MT 100 has a “My-Link” control input

and output for communication with other

Myryad products.

The MT 100 offers a range of expansion

possibilities:

• The MT 100 can be remote-controlled

using the Myryad System Remote handset.

• The “My-Link” input can be connected

to a Myryad integrated ampliﬁer or

pre-ampliﬁer so that the MT 100 will

automatically be switched on or off when

the ampliﬁer is switched on or off.

• The “My-Link” input/output can be

coupled to other Myryad products, which

can then be remote-controlled via the

MT 100's infra-red receiver – or vice-versa.

installation and

safety notes

This Tuner generates very little heat but still

requires some ventilation. Do not place it

on a rug or other soft surface into which it

could sink, obstructing the air inlets in its

underside. Do not allow any obstruction to

the ventilation slots in the rear panel. The

Tuner should not be placed in a built-in

installation such as a bookcase or rack unless

proper ventilation is provided.

CAUTION:TO PREVENT A FIRE OR SHOCK

HAZARD, DO NOT PERMIT THIS PRODUCT TO

BECOME WET. IF LIQUID IS ACCIDENTALLY

SPILLED ON IT, IMMEDIATELY SHUT OFF ITS

POWER AT THE WALL SOCKET AND UNPLUG

THE AC POWER CORD. ALLOW SUFFICIENT

TIME FOR COMPLETE EVAPORATION TO OCCUR

BEFORE OPERATING THE UNIT AGAIN. IF THE

LIQUID IS ANYTHING BUT WATER AND/OR

ALCOHOL,THE UNIT SHOULD BE EXAMINED

BY A QUALIFIED SERVICE TECHNICIAN BEFORE

IT IS USED AGAIN.

Do not remove the cover, or attempt to

modify or repair the Tuner yourself.

Refer all servicing to a qualiﬁed technician.

NOTE REGARDING MICROPROCESSOR

CONTROLLED EQUIPMENT:

ALL MYRYAD M-SERIES PRODUCTS ARE

CONTROLLED BY A MICROPROCESSOR

LOCATED BETWEEN THE FASCIA AND SUB-

FASCIA.THESE PROCESSORS RUN WHENEVER

THE UNIT IS TURNED ON AT THE REAR PANEL.

LIKE ALL MICROPROCESSORS, THOSE USED

IN MYRYAD EQUIPMENT ARE SENSITIVE TO

CHANGES IN SUPPLY VOLTAGE. IN PARTICULAR,

WHEN THE UNIT IS TURNED OFF AT THE REAR

PANEL SWITCH, THE PROCESSOR MUST BE

GIVEN TIME TO RESET BEFORE THE UNIT IS

TURNED BACK ON. GENERALLY 60 SECONDS

IS SUFFICIENT. FAILURE TO ALLOW TIME FOR

THE PROCESSOR TO RESET MAY RESULT IN

INCORRECT PROCESSOR OPERATION.

SYMPTOMS OF THIS MIGHT INCLUDE:

• BUTTONS THAT FAIL TO WORK.

• UNEXPECTED ACTIONS ETC.

THIS IS COMMON TO ALL MICROPROCESSOR

CONTROLLED EQUIPMENT BUT CAN BE

AVOIDED BY TAKING THE FOLLOWING STEPS:

• MYRYAD UNITS ARE DESIGNED TO BE LEFT

IN STANDBY FOR LONG PERIODS – YOU

DON’T NEED TO TURN THEM OFF AT THE

BACK PANEL UNLESS YOU EXPECT THEM

TO BE UNUSED FOR EXTENDED PERIODS

OF TIME.

• IF YOU TURN YOUR UNIT OFF AT THE REAR

PANEL, ALLOW 60 SECONDS TO ELAPSE

BEFORE TURNING IT BACK ON.

• IF PROBLEMS DO OCCUR, TURN OFF YOUR

UNIT AND LEAVE IT TO STAND FOR AT LEAST

60 SECONDS. IF THE PROBLEMS RECUR

WHEN YOU TURN THE UNIT BACK ON,

CONTACT YOUR DEALER.

accessories

Your MT 100 is supplied complete with

the following accessories:

• Separate mains power cord to suit

country of sale.

• Wire antenna (300Ω) suitable for high

signal strength areas.

• Balun (matching adaptor) to allow

connection of the 300Ω antenna.

• Balun interface connector where necessary

(not all countries).

• System Remote.

power

off

my-link

out in

line

output input

antenna

coax

75Ω

setting up your

system

rear panel

connections

1Power inlet

Before making any connection, check that the

mains voltage setting printed on the rear

panel is the same as your local mains supply.

Plug the female (socket) end of the power

cord into the power inlet on the rear of the

Tuner. Plug the male (plug) end of the cord

into a “live” wall socket or a suitable heavy

duty extension cable.

UK version: The mains plug is supplied ﬁtted

with a 5A fuse. It should only be replaced

with a fuse of the same rating (5A) which

complies with BS1362.

Plug wiring instructions: The wires in this

mains lead are coloured in accordance with

the following code:

• blue – neutral

• brown – live

As the colours of the wires in the mains lead

of this apparatus may not correspond

with the coloured markings identifying the

terminals in your plug, proceed as follows:

• The wire that is coloured blue must be

connected to the terminal that is marked

with the letter N or coloured black.

• The wire that is coloured brown must be

connected to the terminal that is marked

with the letter L or coloured red.

No connection should be made to the

earth terminal of a three-pin plug (marked

with the letter E or coloured green or green

and yellow).

2Power switch

Press one side of this rocker switch (the side

nearer the edge of the rear panel) to switch

the Tuner ON and the other side (towards

the antenna socket) to switch it OFF. When

the POWER switch is in the OFF position all

power is disconnected from the Tuner. In

this condition the Tuner cannot be powered

up from the front panel or the remote

control. When the POWER switch is in the

ON position (and the power cord correctly

inserted and plugged in to a live wall socket)

the Tuner will power up in standby mode

(see FRONT PANEL CONTROLS, STANDBY,).

It is recommended that the POWER switch

is turned OFF if the Tuner is not going to be

used for an extended period of time.

3My-link input/output

When the MT 100 is used in a system with

other Myryad products all may be joined

together via the My-Link and this offers three

beneﬁts. First, when coupled to a Myryad

Integrated Ampliﬁer (e.g. the MI 120) or

Pre-ampliﬁer, the MT 100 will automatically

be switched into or out of STANDBY when

the ampliﬁer is switched on, either from the

front panel, or its own remote control.

Secondly, the My-Link allows both the

MT 100 and the Myryad Ampliﬁer to be

remote-controlled via the infra-red receiver

in either unit. Thus only one unit needs to

be in “line-of-sight” of the remote handset.

Finally, the system enables the remote

control of some Myryad products that do

not have their own infra-red receiver.

When connected to a Myryad Integrated

Ampliﬁer or Pre-ampliﬁer via the My-Link,

the tuner display will show the message

“SYSTEM ON” during the ﬁve-second

warm-up period.

4 Antenna input

The MT 100 is ﬁtted with a 75Ω “coaxial”

antenna socket, which must be used with a

75Ω antenna (aerial). The MT 100 is supplied

with a simple wire 300Ω antenna together

with an impedance matching adaptor

(see Figure 1). This antenna is provided to

ensure that the tuner can be set up and used

straight “out of the box”. It is not adequate to

provide full performance from the Tuner

except in areas of particularly high signal

strength (e.g. close to the FM transmitter). In

most instances a good quality roof or loft

mounted FM antenna should be used – see

“Antennas” section on page 7.

The MT 100 has different coaxial antenna

sockets to suit different countries. “North

American” models are ﬁtted with “F” type

coaxial connectors while models for most

other countries are ﬁtted with “DIN” style

connectors. When using the 300Ω wire

antenna the matching adaptor (or balun)

must be used and “DIN” versions also need

to be ﬁtted with the female-to-female adaptor

supplied. See Figure 1 for clariﬁcation.

When you unfold the wire antenna you

will note that it is in the form of a “T”.

The “crossbar” portion of the T should be

stretched out horizontally and tacked in

place, either on a wall or the back of a

cabinet, or on the ceiling. The “vertical”

section of the T goes to the tuner’s antenna

input via the balun (see Figure 1). Experiment

with the position and orientation of the

antenna to obtain the best reception.

English MT 100 ok 29/1/01 10:20 am Page 2

5Line outputs

These outputs are suited to the “TUNER” or

other “Line” inputs (e.g. CD or AUX) of any

integrated ampliﬁer or pre-ampliﬁer. Never

connect to the ampliﬁer’s PHONO inputs.

front panel

controls

1 Standby

When the Tuner is plugged into a live wall

socket and the POWER switch is turned ON,

it will power up in “Standby” mode and the

LED (Light Emitting Diode) in the STANDBY

button will glow red. In this mode the internal

circuitry of the MT 100 is powered up but

disabled, so that it consumes very little power

and its audio output is muted by a relay.

When the STANDBY button is pressed the

MT 100 circuitry will be activated, and, after

a few seconds delay, the audio outputs will

be enabled. During this delay period the

LED in the STANDBY button will flash blue.

When the outputs are de-muted it will glow

green continuously.

When the STANDBY button is pressed again

the Tuner will be returned to standby mode.

The LED in the STANDBY button will glow

red again and the display will be extinguished.

CAUTION:WHEN IN STANDBY MODE THE

INTERNAL CIRCUITRY OF THE MT 100 IS STILL

LIVE, SO ALL SAFETY PRECAUTIONS MUST

BE FOLLOWED.

2Infra-red receiver

The infra-red (IR) remote control receiver is

mounted behind the window, just above the

display. It must not be obscured when the

Tuner is to be operated using a Myryad

System Remote handset. Where possible it

is best to arrange that the IR receiver is in

“line-of-sight” of the remote handset.

3Display

The operation of the tuner is indicated on

a high quality blue Vacuum Fluorescent

Display. The tuned frequency is always

displayed to the left, together with the Preset

Number, Signal Strength or SCH to indicate

the selected tuning mode (see below, sections

7, 8 and 9).

4 Stereo indicator

This indicator is illuminated when a stereo

broadcast is being received and the tuner is

not switched to MONO mode.

5On tune indicator

This indicator is illuminated when any FM

signal, above a very low threshold, is received

and is ON TUNE.

6Tuning knob

The tuning knob is used to set the frequency

in MANUAL, PRESET and SEARCH modes.

The knob operates with 24 discrete clicks per

revolution. The operation of the knob is

determined by the mode selected (see below)

but in all modes, a clockwise click will

perform an incremental operation and an

anticlockwise click a decrement.

7Preset tuning mode

Press the PRESET button to enter “Preset

Tuning” mode. The MT 100 will tune to the

frequency of the last used preset station and

the display will show the tuned frequency

and the preset number (see Figure 2). When

the tuning knob is turned one step clockwise

the MT 100 will tune to the preset stored

with the next higher number while an anti-

clockwise step will move to the next lower

stored preset. The tuner will skip preset

positions that have not been programmed,

i.e. if station 3 is not programmed, the tuner

will skip from station 2 to station 4. If the

tuner is stepped beyond the highest number

preset stored, it will “wrap-around” and step

back to the lowest numbered preset.

Preset Display Mode (Figure 2)

NOTE: PRESET MODE CANNOT BE

ENTERED UNTIL AT LEAST ONE STATION

HAS BEEN PROGRAMMED (SEE SECTION

11 – STORE BUTTON)

8 Manual tuning mode

Press the MANUAL button to enter Manual

Tuning mode. The display shows the tuned

frequency, together with a Signal strength

indication (see Figure 3). When the tuning

knob is rotated clockwise the tuned frequency

will increase by 50kHz at each click step

or decrease by 50kHz per click for an anti-

clockwise rotation. Correct tuning can be

obtained either by setting the correct

frequency, if it is known, or by tuning until

the ON TUNE indicator illuminates – which

indicates accurate tuning. Once the station

is tuned its frequency may be stored as one

of the Presets if desired (see above).

The signal strength indicator will display a

number from 1 to 9, preceded by the letters

“SI”. A signal strength of “–” indicates no

signal, whilst a signal strength of 9 indicates

a very strong signal. Normally an indication

of 4 or 5 is necessary for a useable signal in

stereo, while a ﬁgure of 7 should ensure that

lowest noise reception is obtained in stereo.

tuning mode. If the signal strength of a

station tuned in Preset mode is required,

standby

MT 100 FM Stereo Tuner

storemono

preset

manual

operating your

system

Coaxial antenna

socket (DIN type)

Female-to-female adaptor

(DIN versions only)

300Ω adaptor

(balun) (F type is

similar)

Wire antenna

Coaxial antenna

socket (F type)

(Figure 1)

Antenna connectors and adaptors

English MT 100 ok 29/1/01 10:20 am Page 4

antenna

The wire antenna supplied with the MT 100

may provide adequate reception of strong FM

signals. However, such an antenna is not very

efficient at rejecting “multipath” and other

forms of FM interference. Nor can it easily be

rotated to optimize its pickup pattern for best

reception of stations from different directions.

In most cases you will greatly improve recep-

tion by using a better antenna.

The best choice is a directional FM-only

antenna, mounted as high above ground as

is practical. The antenna should be mounted

externally for best reception, but loft

mounting is a simpler alternative which is

satisfactory in many locations when adequate

loft space is available. The type of antenna

necessary will depend upon both your

distance from the transmitter and the

local geography (e.g. intervening hills or

large buildings).

It is also most important to pay attention to

the quality of the coaxial cable used for the

downlead from the antenna to your tuner.

Avoid joins along the length of the cable and

ensure that the exposed end at the antenna is

properly weatherproofed against ingress of

moisture. All cables lose some signal along

their length and it is false economy to use

cheap cable of unknown quality. Always

specify the best “low loss” coaxial cable

The above notes are for guidance only.

It will usually be best to consult a local

specialist aerial/antenna contractor who will

have knowledge of local reception conditions.

Your Myryad dealer may also be able to

offer advice.

trouble-shooting

guide

some of the most common problems

No sound:

• Power turned off or system in standby

mode. Check that the blue LED in the

STANDBY button is illuminated.

• UK version only: The fuse in the mains

plug has failed. Check and replace

if necessary.

Sound in one channel only:

• Interconnect cable pulled loose or making

poor contact. Check and, if necessary, un-

plug and re-plug all cables.

Loud buzz or hum:

• Interconnect cable pulled partially out

of its socket.

• Defective interconnect cable.

Hiss that gets worse with stereo reception

• Antenna connector loose. Un-plug and

re-plug connector and check cable.

• Weak antenna signal. Move wire antenna to

optimize reception. If not adequate, install

a loft or external antenna.

• If all else fails, switch to MONO reception.

Stereo indicator fails to light during a

stereo broadcast

• Another possible effect of a very weak

signal. Attend to the antenna system as

described above.

Distorted reception

• “Multipath” reception. Rotate antenna to

ﬁnd the orientation that provides the best

reception. Raise the height of the antenna.

If all else fails, switch to MONO reception.

For further help please visit

www.myryad.co.uk/faqs.html

simply switch to Manual mode after tuning.

A Signal Strength reading of 5 or below

indicates that improved sound quality might

be achieved by improving the antenna system.

Manual Display Mode (Figure 3)

9Search tuning mode

Press the SEARCH button to enter Search

Tuning mode. The display shows the tuned

frequency, together with “SCn” where “n” is

the signal strength (1 to 9). When the tuning

knob is turned one step clockwise the MT 100

will commence searching for FM stations at

frequencies higher than the start point and

the display will change to “SCH” during

SEARCH (see Figure 4). If the knob is rotated

anti-clockwise the MT 100 will search lower

frequencies. When the ﬁrst station of adequate

signal strength is detected the MT 100

will stop searching, the display will return

to “SCn” to show the signal strength and the

ON TUNE indicator will illuminate. Once the

station is tuned, its frequency may be stored

as one of the Presets if desired (see below),

or the search initiated again by rotating the

tuning knob in the required direction.

Search Display Mode (Figure 4)

Searching may be stopped before a station is

found by rotating the tuning knob in the

opposite direction to the current search, or by

pressing the MANUAL, PRESET or SEARCH

mode buttons.

10 Mono button

When the MONO button is pressed the tuner

is locked into MONO reception mode and

the STEREO indicator will not illuminate,

whether the tuned station is transmitting in

stereo or mono. A green LED in the MONO

button will illuminate to indicate this mode.

If noisy reception is experienced in stereo

mode, pressing the MONO button will

usually result in a dramatic improvement in

sound quality. Switching the tuner to MONO

mode also disables the inter-station muting,

so allowing very weak stations to be received.

When a station is stored as a preset (see

previous page) the MONO status is also

stored, and will therefore be recalled whenever

that preset is accessed.

11 Store button

The STORE button is used when storing the

preset station frequencies. The procedure is

as follows:

• Tune to the desired station using either

MANUAL or SEARCH tuning mode, and set

to MONO if required.

• Press the STORE button to enter STORE

mode, which illuminates the red LED in

the button. The tuner will automatically

change to Preset mode at the last used

preset number.

• If the station is to be stored at a different

preset number, rotate the tuning knob

clockwise or anti-clockwise until the

desired preset number is reached,

otherwise move directly to step 4.

• Press the STORE button again to store the

frequency at the preset number displayed.

The tuner will then automatically return to

the previous tuning mode ready to tune the

next station and the STORE button LED

will extinguish.

• STORE mode can be exited by pressing

either MANUAL, SEARCH or PRESET

buttons. The preset station data is stored in

a permanent memory and is retained when

the tuner is in standby mode, or switched

off at the rear panel.

• To Delete The Selected PRESET Station

– Whilst holding the PRESET button,

press the STORE button. Then release

both buttons.

• To Delete All PRESET Stations – While

holding the MONO button, press the

STORE button. Then release both buttons.

• These two operations can only be

performed from the front panel, not the

remote control.

remote control

handset operation

The MT 100 may be remote controlled

using a Myryad System Remote handset

which is supplied with some Myryad

Integrated Ampliﬁers and Preampliﬁers, or

can be purchased separately. The System

Remote keys which can control the MT 100

tuner are:PRESET, MANUAL, SEARCH,

MONO, TUNE UP, TUNE DOWN, STORE,

STANDBY, DIM and keypad numbers 0-9.

Preset, manual and search

Mode keys operate exactly as MT 100 front

panel buttons.

Mono

The MONO key operates exactly as the

MT 100 front panel button.

Store

The STORE key operates exactly as the

MT 100 front panel button.

Tune up and tune down

These keys operate in a similar way to the

rotary tuning knob. A single brief key press

will have the same effect as one click step

of the knob, moving either up or down in

frequency or preset number. In Manual

and Preset modes, when a key is pressed

and held down the tuner will scan in the

desired direction.

Keypad 0-9

These keys allow direct access to any preset

station. If a preset numbered 10 to 29 is

desired, (e.g. 14) press “1”, followed by “4”.

If “1” is pressed without a second digit, the

tuner will go to preset 1 after few seconds.

Pressing any other number key, from

2 to 9, will tune instantly to the relevant

preset station. Presets 1 and 2 may be tuned

instantly by pressing “0” ﬁrst (i.e. 0,1 or 0,2).

Dim

The Vacuum Fluorescent Display may be

dimmed or switched off using the DIM key.

The ﬁrst press of the DIM key will switch the

display off. A second press will turn the

display on again, but less brightly. A third

press of the DIM key will return the display to

its original brightness. The display will come

on briefly if controls are used while the

display is off.

Standby

Pressing the STANDBY key sends the

command to switch your Myryad Integrated

Amplifier or Preamplifier into or out of

STANDBY mode. If your MT 100 is linked to

the Integrated or Preamp via the My-Link

then the MT 100 will also be switched into or

out of STANDBY. It is also possible to switch

only the MT 100 into or out of STANDBY

using the “Tuner Standby” command. This is

achieved by pressing and holding down the

TUNER button and then simultaneously

pressing the STANDBY button. This will

switch the STANDBY status of the MT 100

without affecting any other unit.

specifications

Technical data

Usable sensitivity (IHF, mono) ......................................................................................................................................1.5µV

Signal/Noise ratio (60dBµV) ................................................................................................................80dB (Mono) 74dB (Stereo)

THD (1kHz)................................................................................................................................0.1% (Mono) 0.2% (Stereo)

Image rejection ..................................................................................................................................................................88dB

IF rejection........................................................................................................................................................................100dB

Frequency response (20Hz –15kHz)..........................................................................................................................................± 0.5dB

Stereo separation (1kHz)..................................................................................................................................................45dB

Dimensions (width x height x depth)..................................................................................................................436 x 95 x 303mm

Weight, Net ........................................................................................................................................................................5.4kg

Supply Voltage (set by internal wiring)............................................................................................................120V or 230V

Stock No: OST0011850

Revision A

English MT 100 ok 29/1/01 10:20 am Page 6

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