Inter-m LM-6228 Operation Manual

Operation Manual

Line Monitor

LM-6228

* Rack mount products in the Western Hemisphere(North America, South America,

and the Caribbean) do not have handles installed due to customer preference.

LINE MONITOR

Welcome

Welcome

A personal welcome to you from the management and employees of Inter-M

All of the co-workers here at Inter-M are dedicated to providing excellent products with inherently good value,
and we are delighted you have purchased one of our products.

We sincerely trust this product will provide years of satisfactory service, but if anything is not to your complete
satisfaction, we will endeavor to make things right.

Welcome to Inter-M, and thank you for becoming part of our worldwide extended family!

This symbol is intend ed to aler t the user to the

CAutION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

Caution: To prevent electric shock do not use this (polarized) plug with

Attentions: Pour prévenir les chocs électriques ne pas utiliser cette

WARNING

To prevent fire or shock hazard, do not
expose the unit to rain or moisture.

*WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING-WATER AND MOISTURE: Unit should not be used near water(e.g.

near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken so than objects do

not fall and liquids are not spilled into the enclosure through openings.
*Do not install this equipment in a confined space such as a book case or similar unit.
*This apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such vases, shall be placed on the apparatus.
*This apparatus shall be connected to a mains socket outlet with a protective earthing connection.

It has heed to be easy to disconnect the device. To disconnect the device from power, separate AC input cable from inlet or unplug the AC Cord.

*
*

The socket-outlet shall be installed near the equipment and shall be easily accessible.

CAutION

*These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing

other than that contained in the operating instructions unless you are qualified to do so.

NOtE
*This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment

generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful

interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will

be required to correct the interference at his own expense.

presence of uninsulated “dangerous voltage” within
the prod uct’s enclos ure t hat m ay be of suffi cient
magnitude to constitute a risk of electric shock to
persons.

This symbol is intend ed to aler t the user to the
presence of important operation and maintenance
(servicing) instructions in the literature accompanying
the appliance.

an extension cord, receptacle or other outlet unless the blades
can be fully inserted to prevent blade exposure.

fiche polarisée avec un prolongateur, une prise de courant
on une autre sortie de courant, sauf si les lames peuvent
étre insérées à fon d sa ns en laisser auc une par tie à
découvert.

LINE MONITOR

Contents

Contents

Unpacking .......................................................................................................................................2

Installation

Environment....................................................................................................................................2

Important Safety Instructions.............................................................................................................2

Features............................................................................................................................................3

Operation ........................................................................................................................................3

Front Panel ......................................................................................................................................4

Rear Panel .......................................................................................................................................5

Applications ....................................................................................................................................6

Block Diagram ................................................................................................................................7

Specifications ..................................................................................................................................8

Service

Procedures......................................................................................................................................9

Schematic.......................................................................................................................................9

Parts List .........................................................................................................................................9

Warranty .........................................................................................................................................9

LM-6228

1

LINE MONITOR

S3125A

Unpacking

Unpacking

Although your LM-6228 is neither complicated nor difficult to operate, we recommend you take a few minutes
to read this brief manual and familiarize yourself with the important information regarding product features,
setup and operation.

As with most electronic devices, we strongly recommend you retain the original packaging. In the unlikely event
the product must be returned for servicing, the original packaging (or reasonable equivalent) is required.

Installation

Installation

Environment

Never place this product in an environment which could alter its performance or reduce its service life. Such
environments usually include high levels of heat, dust, moisture, and vibration.

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or has
been dropped.

S3125A

2

LM-6228

LINE MONITOR

Features

Features

- LED LEVEL METER

5 points dot LED level meter.

- OUTPUT SIGNAL MONITORING

Built in monitor speaker.

Operation

Operation

Please choose the channel needed to be checked and adjust the sound level and tune, then start monitoring.

LM-6228

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LINE MONITOR

Front Panel

Front Panel

1. MONITOR SPEAKER

Monitoring the signal chosen is available by the channel selection switch. It can be adjusted with the channel
volume.

2. LEVEL METER

5 dot LED level meter. Indicates a signal level selected by selection SW.

3. CHANNEL VOLUME

Speaker volume can be adjusted individually by this knob.

4. CHANNEL SELECTOR SWITCHES (GROUP 1: 1~4, GROUP 2: 1~4)

Eight switches select any channel’s output to be monitored by the front panel speaker.

4

LM-6228

Rear Panel

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24V

MODEL NO. LM-6228

L

INE MONITO

R

DC

S

N

-

+

DC INPUT

24V

C

H4

O

UTPUT

GROUP 2

INPUT

C

H3

C

H2

C

H1

C

H4

OUTPUT

GROUP 1

INPUT

C

H3

C

H2

C

H1

1

23

Rear Panel

LINE MONITOR

1. LINE INPUT

This is for the connection for the equipment intended for monitoring.

2. LINE OUTPUT

This Jack is for supplying the signal from the power amp with a line output by by-passing the line input signal.
The signal to channel 1 goes directly to the line output.

3. DC INPUT TERMINALS

Connect a +24V DC battery source to these terminals. Make certain the red terminal is connected to the
battery’s positive (+) side, and the black terminal to the battery’s negative (-) side.

LM-6228

5

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PA-6336 x 4

Applications

Applications

6

LM-6228

Block Diagram

Block Diagram

LINE MONITOR

LM-6228

7

LINE MONITOR

440

482

88

280

Specifications

Specifications

LM-6228

Frequency Response 20Hz~20kHz(±1dB)

S/N Better than 100dB

Input Sensitivity 1V, 50kΩ

Monitor Speaker Output Power 4Ω/0.5W

Weight (SET) 7.5kg/16.5lb

Dimensions (SET) 482(W)x88(H)x280(D)mm/9(W)x3.5(H)x11(D)in

* Specifications and design are subject to change without notice.

※ DIMENSIONS

8

LM-6228

LINE MONITOR

Service

Service

Procedures

Take steps to insure the problem is not related to operator error or other products within the system. Information
provided in the troubleshooting portion of this manual may help with this process. Once it is certain that the
problem is related to the product contact your warranty provider as described in the warranty section of this
manual.

Schematic

A Schematic is available by contacting your warranty provider.

Parts List

A Parts List is available by contacting your warranty provider.

Warranty

Warranty

Warranty terms and conditions vary by country and may not be the same for all products. Terms and conditions
of warranty for a given product may be determined first by locating the appropriate country which the product
was purchased in, then by locating the product type.

To obtain specific warranty information and available service locations contact Inter-M directly or the
authorized Inter-M Distributor for your specific country or region.

LM-6228

9

Inter-M, Ltd. (Korea) began operations in 1983.

Since then, Inter-M has grown to become one of the largest manufacturers
of professional audio and commercial sound electronics equipment in the world.

Inter-M has gained worldwide recognition for its own branded products,
as well as private label manufacturing of electronics sold under other names (OEM).

The company is no longer just a Korean company, but rather a global company
that is truly international in scope, with factories and offices in Korea and China,
and sales and marketing operations located in Japan, Europe, and the U.S.A.

With more than 850 employees around the globe,
Inter-M is well-poised for further growth and expansion.

Inter-M Americas, INC.

13875 ARTESIA BLVD. CERRITOS, CA 90703 USA
TEL : [phone], FAX : [phone]
Home Page : http://www.inter-m.net, E-mail : [e-mail]

Inter-M Corporation

SEOUL OFFICE:653-5 BANGHAK-DONG, DOBONG-KU, SEOUL, KOREA
TEL : [phone]~8, FAX : [phone]
Home Page : http://www.inter-m.com, E-mail : [e-mail]

MADE IN KOREA

June 2012