Inter-m LM-9228 User manual

erating manual
LM-Q228 Line Monitor
LM-9228 LINEMONITOR
nn
o
o
intern!

Welcome
Warning 1
Installation
Environment 2
Important Safety Instructions 2
Features 3
Accessories 3
Operation 3
FrontPanel 4
Rear Panel 5
Hint for RackAssembling 6
Applications 7
Block Diagram ; , 8
Specifications 9
Service
Procedures 10
Schematic 10
Parts List 10
Variations and Options 10
Warranty 10

LINE MONITOR
A personal welcome toyou from the management and employees of Inter-M
Allofthe co-workers here at Inter-M are dedicated to providing excellent products with inherently good value,
andweare delighted you have purchased oneofour products.
We sincerely trustthis product will provide years of satisfactory service, butif anything isnotto your complete
satisfaction, we will endeavor to make things right.
Welcome to Inter-M, and thank youfor becoming part ofour worldwide extended family!
Warning
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVECOVER (OR BACK).
NO USER-SERVICEABLEPARTS INSIDE.
REFERSERVICING TO QUALIFIED SERVICE PERSONNEL.
Thissymbol is intended to alert the user tothe
presence of uninsulated"dangerousvoltage"within
the product'senclosurethat maybeof suf-ficient
magnitude to constitute a risk of electricshock to
persons.
Thissymbol is intended to alert the user tothe
presence of importantoperation and mainte-nance
(servicing)instructions inthe literatureaccompanying
the appliance.
Caution: To preventelectricshock donotuse this(polarized)plugwith
an extensioncord,receptacle or otheroutletunless the blades
canbe fullyinserted to preventbladeexpo-sure.
WARNING
To prevent fire or shockhazard, donot
expose the unit to rain or moisture.
Attentions: Pour prevenir les chocs electriques nepas utilisercette
fiche polarisee avec un prolongateur, une prise de courant
onune autresortie de courant,sauf siles lamespeuvent
etre inserees a fondsans en laisseraucunepartie a
decouvert.
*Do not installthisequipment ina confinedspacesuch asa bookcase or similarunit.
*The apparatusshall notbe exposed to dripping or splashing andno objectsfilledwithliquids,suchvases,shall be placed onthe apparatus.
LM-9228 1

LINE MONITOR
Environment
Never place this product inan environment which could alter its performance or reduce its service life. Such
environments usuallyinclude high levels of heat,dust,moisture, and vibration.
ImportantSafetyInstructions
1. Read these instructions.
2. Follow all instructions.
3. Keep all warnings.
4.Donotuse this apparatusnearwater.
5. Cleanonly with a dampcloth.
6.Donot block anyofthe ventilationopenings.
7. Install in accordancewith the manufacturer'sinstructions.
8.Donot installnear any heat sources such as radiators, heatregisters, stoves, or otherapparatus (including
amplifiers)thatproduceheat.
9.Donot defeat the safety purpose ofthe polarized or grounding type plug. A polarized plug hastwo blades
with one wider than the other. A grounding type plug hastwo blades anda third grounding prong. The wide
blade orthe third prong is provided for your safety. When the providedplugdoes notfit intoyouroutlet,
consult an electrician for replacement ofthe obsoleteoutlet.
10. Protect trie power cord from being walked onor pinched particularly at plugs, conveniencereceptacles, and
the pointwheretheyexitfrom the apparatus.
11. Use only the attachments/accessories specified bythe manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table specified bythe manufacturer, or sold with the
apparatus. When a cart is used, use cautionwhenmoving the cart/apparatuscombination to avoid injury
fromtip-over.
] 3. Unplug this apparatus during lightning storms or whenunused for long periods of time.
14. Refer all servicing to qualified servicepersonnel.Servicing is required when the
apparatus has beendamaged inany way, such as power supplycord or plug is
damaged, liquid has been spilled or objectshave fallen into the apparatus, the
apparatus has beenexposed to rain or moisture,does not operate normally, orhas
been dropped.
S3125A
LM-9228

LINE MONITOR
-LED LEVEL METER
It is easy to check the inputlevel of power ampbyLED Level Meter
- MONITORING 8 INPUT OFAMP LEVEL
8 mixeroutputsignals are visible, 2 signals canbe monitoredsimultaneouslybecausethey are linked in2
groups("1" group and"2" group).
- VOLUMECONTROL FOR MONITOR
Volumecontrol is available in order to adjust the desiredvolume.
- USINGHIGH QUALITY SPEAKER
By using high quality speaker, the inputsignal canbe checked in clear and fullsound.
Accessories
One detachable AC powercord is provided foruse with this product.
1. This unit starts working as power ison.
2. Push the switch of desiredchannel to check, and adjust the volume,then starts monitoring the loudness and
tone.
LM-9228

LINE MONITOR
o
o
1 — 1
intCfrjl LM-9k8 LINE MONITOR ' * " '
r> ' *-> : i::
1 ' ' • -3 '
( ) . • -8 '
[ J i • -13 ,
GROUP 1 \
~«r
JOBD
OK>
' «Y '
n
CH3
a
i —
• «;
a
• >.-: / r
' • -3 ' * '
! • -B ' f )
. • -13 , ( J
/X GRoup2 L
0
o
1. MONITOR SPEAKER
It's being able to monitor a chosensignal by channelselector aurally. It'scontrolled by channel volume..
2.LED LEVEL METER
It can showsignallevelthat is selected by channelselectorvisually
3. CHANNELVOLUME
It can control a monitorspeaker 1 through an inner amplification. Rightturn is volume upand left turn is
down...
4. CHANNEL SELECT SWITCH
It looks out stereo 4 channel, stereo 1 channelamong the mono 8 channel and mono 2 channel. It's divided
by first(4channel) and second(4 channel) group.
4 LM-9228

LINE MONITOR
1. LINE INPUT
Can monitor specific equipment by connectingsignal to this XLR connectorskeepinghighsensitivity.
There aretwo groups forthe lineinputconnectors and number one group has4 channel andthe second
group has4 channel.
You could useone channel of number oneandtwo group for stereotype and could use 4channel of number
one andtwo group for monotypetherefore, can monitor 8 channel with selecting.
2. LINEOUTPUT
It is XLR connector with high sensitivity to supply the inputsignal of poweramplifierfrom a inputlinesignal
with bypassing.
The inputlinesignalfromchannel 1 goes tothe lineoutputwithoutreduction.
3.DC INPUTTERMINAL
These terminals arefor connecting DC24V powersupply for driving. Please noteeachpole.(Supplyfrom
PD-9359)
LM-9228

LINE MONITOR
Hint for Rode Asstmblug
1. turn off power switch on wholerack.
2. Connect DC24V withattention +.- pole and check the light onthe LED.
3. Connectcircuitboard to HOT.COM, GROUND for monitoring.
4. Should connect 1 OOK OHMand1 k OHM likebelowpictures for monitoringoutput (1 OOv out) of Power amp.
10OK OHM
HOT(+) • MA/VW f • HOT(+)
POWER AMP 100V OUT |1KOHM
COLD(-) •— 1— —• COLD(-)
G • • G
LM-9228

LINE MONITOR
CMX-1668
LM-9228

LINE MONITOR
^••^^^&Kfl0>
HOCK
G
R
O
U
P
G
R
0
U
P
LINE IN
CH 1 O
CH2 O
CHS O
CH4 O
CH 1 O
CH 2 O
CHS O
CH4
f —
)
,
1
>
<
-
1
*
A GROUP
'
• <
1
' B GROUP
LINE OUT
OCH1
OCH 2
OCH3
OCH 4
OCH1
OCH 2
OCH 3
OCH 4
CHANNELSELECTOR
LM-9228

LINE MONITOR
- ELECTRICAL
Output Power 4V/8Q
FrequencyResponse(±3dB) 20Hz~20kHz(±ldB)
S/N Betterthan lOOdB
Input Sense !V/50kQ
Line Out !V/50kQ
- GENERAL
Power Source 100-120VAC or 220-240VAC; 50/60Hz
(Supplied AC mainstransformerdepends on countryrequirements)
Weight 7.5kg/16.5lb
Dimensions 482(W)x88(H)x280(D)mm/19(W)x3.5(H)x 1 l(D)in
- ACCESSORIES
Operating Manual 1
Screw 4(Rack Mount)
Washer... 4(Rack Mount)
* Specifications and design subject to change without notice.
LM-9228 9

LINE MONITOR
Procedures
Ensure the problem isnot related to operator error, or system devices that are external to this unit.Information
provided inthe troubleshootingportion of this manual may helpwith this process. Once itis certainthat the
problem is related tothe product contact yourwarrantyprovider as described inthe warrantysection of this
manual.
Schematic
A Schematic is available by contactingyourwarranty provider.
Parts List
A Parts List is available by contactingyourwarrantyprovider.
Variations
Products suppliedthroughlegitimate sources are compatiblewithlocal AC powerrequirements.
Options
No optional items are available for this product.
Warranty
Warranty terms and conditionsvary by country andmaynotbethe same forall products. Terms and conditions
of warranty fora givenproduct maybe determined first by locating the appropriatecountrywhich the product
was purchased in, then by locating the producttype.
To obtain specific warrantyinformation and available service locationscontact Inter-M directlyfin Korea orthe
USA) orthe authorizedInter-MDistributor for your specific country or region.
LM-9228