Alesis ADAT RMB User manual

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TETER BRIDGC
ReferenceManual

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ReferenceManual
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1993AlesisCorooration

'.ABLE OF GONIENJS
CHAPPJEP.
I t INIP,ODUGIION
1.0ABOUTTHERMB........... ..............1
1.1 ABOUTTTTTSMANUAL..................... ..........,.....2
1.2 OVERVIEWOF MAIN FI.JNCTIONS
2.3 MOUNTING TO THE BRC
CHAPPIEP,3c BAEIG OPERAIION
3.0 POWERING-UP

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CHAPJER l s ftttRODUCJtOrt
I.O ABOUI rHE F/NB
Congratulations!You,vejust purchasedan invaluable addition
to the BRC/ADAT system.
The RMB Remote
Meter Bridge is
designed_to_give
you instant level information by providing 15_
se€ment
LED bargraphmeters
for up to gZ
aOaf tracks.
In-
addition, LED indicatorsareprovided for displaying therecord
and input status
of each
track.Th" \MB is plrfect ior mounting
atop the BRC
MasterRemote
Control, or ini standard 19"
equipmentrack,or it canbe installed above
your mixing console.
Here aresome
of the features
theRMB will provide yori:
o 32channelmeterUri{gc. 15-segment
LED bargraphmeters
kq:p you informed of the leveli for up to gZtiacis (a
ADATs). Themeters
havetwo decay
ipeeds,fastand slow,
which control the time it takes
for ihe level indicators to fall
backdown when audio is no longerpresent
or thetape
transportis stopped.
Selectable
peak mode.Each
time atrack,s
levelreaches
anew
peak,the corresponding
LED on the RMB will either remain
lit momentarily,or continuouslp or not at all, depending on
themode you select
from the front panel.All peakLEDsian
beinstantly cleared
from thedisplai with thepress
of asingle
button.
ADAT interaction. Not only does
theRMB display thelevels
of each
ADAT track,it alsoadjusts
each
ADAT,i bargraph
display to matchthe RMB,sconfiguration.If you sel6ct'
Momentary Peak
Mode,theADAIs will alsobesetto the
same
mode automatically.When you clearthe peak LEDson
theRMB,thepeaks
in theADATJ displaysareilso cleared.
Easyhookup and operation. TheRMB caneitherbemounted
atop the BRC,
or rack-mountedin a standard 19,'
equipment
rack. Four dual male, 9-pin D connector cablesare ..ied to
link the RMB with up to four ADATs.
Voltage-tolerant power supply. TheRMB accepts
any AC
voltage between 90and 250volts.

I.I ABOUI IHT9 MANUAL
This manual is designed to give you a basic overview of the
RMB's sehrp and operation. For more information on digital
recording, seeAppendix 1 in the ADAT manual. Appendix 2 in
the ADAT manual is a glossary
of digital recordingterms that
may be helpful as you read this manual.
In this manual, buttons and LEDs are spelled with all capital
letters (suchasDECAY SPEED
LEDsor PEAK CLEAR button).
1.2 OYERY'EW OF '',A'N }UNCJIONS
Here is a brief rundown of the RMB's main functions:
1.2A BargraphMeters
Levels for 32ADAT tracks aredisplayed using lFsegment I.ED
bargraphindicators,rangingfrom -50to 0 dB.Beloweach
bargraph indicator aretwo additional LEDs, used to indicate each
track's record and input status.
For information about setting levels, refer to section 3.3in the
ADAT ReferenceManual.
1.2BDecay Speeds
The RMB has two speeds(fast or slow) to control the rate at
which eadr track's level indicator will fall back down when
audio is no longer present/ or the tape transport is stopped.
1.2C Peak Modes
The RMB uses
threedifferent peak modes:Momentary,
Continuous and Off. When a track's level reachesits peak, the
corresponding LED will either remain lit for a moment, or
remain lit continuously (until the PEAK CLEAR button is
pressed),or will not remain lit if the PeakMode is turned off.

CHAPIER 2s HOOKUP
2.O POWER
The RMB works with any AC voltage from 90to 250volts, 50 to
60 Hz. This eliminates the need for transformers or voltage
switches. The RMB comeswith a line cord for the destination to
whidr the RMB is shipped.
The RMB's IEC-specAC cord (do not substitute any other AC
cord) is designed for connection to an outlet that includes three
pins, with the third pin connected to ground. The ground
connection
is an important safetyfeaturedesignedto keepthe
chassisof electronicdevices
suchas the ADAT, BRC,AI-1 and
RMB at ground potential.Unfortunately, the presence
of a third
ground pin doesnot alwaysindicatethat anoutlet is properly
grounded.Usean AC line testerto determinethis. If the outlet is
not grounded, consult with a licensed
electrician.When AC
currents are suspectedof being highly unstable in voltage and
frequencp a professional power conditioner should be used.
2.1 coturuEc',oil to ADAIfst
TheRMB comeswith a snakewith four male,9-pin D
connectorsat eachend (labeled 1-4), which is used to connect the
RMB to up to four ADATs. Theend of the snake
fannedout into
short cablesshould connect
to the RMB,and the end with longer
cablesshould connect
to the ADATs. If the installation requires
a cable longer than that supplied,usehigh-quality shielded
cables
wired pin-to-pin. Lengthsof 100feetor moremay be
acceptable,
depending upon the quality of the cablesand
connectors
used.TheADATs areconnected
to the corresponding
connectorson the back of the RMB, with respect to the tracks
eadr ADAT is being used for (seefigure 1).Theseconnections
canbemadewhile thepower is on.
To connect the RMB to a four-ADAT system:
1. Connect one end of the cablelabeled "1" to the Meter Bridge
Out connector
of thefirst ADAT (tracks1-€), and connectthe
other end to the Tracks1-8 connectoron the RMB. Pusheach
connector
firmly into its socket,then tighten both screws;

2. Connect one end of the cablelabeled 'Z' to the Meter Bridge
Out connector of the secondADAT (tracks 9-15), and connect
the other end to the Tracks 9-15 connector on the RMB;
3. Connect one end of the cablelabeled "3" to the Meter Bridge
Out connector of the third ADAT (tracks 17-24), and connect
the other end to the Tracks 17-24 connector on the RMB;
4. Connect one end of the cablelabeled '(' to the Meter Bridge
Out connector of the fourth ADAT (tracks 25-32), and
connect the other end to the Tracks 2ts32 connector on the
RMB.
Figure 1
f_____-l-_ir-__5
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---------------- Sy c
+ MeterBridge
t
q
t
a
-4

2.2 R,AGK-MOUNTINE
The two end blocks on either end of the RMB may be removed,
if you wish to rack-mount the unit using the rack earsinduded
with the RMB. The figure below indicates the rack ears' locations
and the screwsthat mount the end blocks.
Fizure 2
2.3 INOUNJ|/NE JO THE BRC
gUseONLYthe
1"hexscrews
t toattachtheendblocks
NOTE: Unlike the BRC, the RMB end blocks will not fit over the rack ears. Depending
on your installation neds, one or the other will be attached to the RMB.
T
, UseONLYthe5/15"phillips
I sc?ewstoattach
therackear!
The RMB includesa mounting bracketfor attachingto the top of
the BRCMaster Remote Control. The figures below illustrate
how the mounting bracket may be attached to either side of the
BRC,
and to the bottom of the RMB.
1. Turn the RMB upside down, its front facing you, and remove
the threescrews
in the middle of the RMB.

Placethe attachment bar on the bottom of the RMB, with its
arms extending towards you. Fastenthe attachment bar to
the RMB using the three soews rernoved in step L and the
washers provided.
Match up the two holes in the side of the attachment bar with
the threaded holes in the side of the RMB. Attach the
RMB/bar assembly
to theBRCby insertingonescrewand
washer on each side, through the front hole. Tighten these
two screwssecurelv.
IMPORTANTi MAKE SURE
THESE
SCREWSARE THE 5/16"
SCREWSINCLUDED WITI{ THE RMB PACKAGE, NOT
THE LONGER SCREWSINCLUDED WTTFITHE BRCAND
INTENDED FORUSEWITH THE ROLL-AROTINDSTAND.
NOTE; If your BRCis attached
to a stand,
skip to step5. If your
BRCis tablestanding,moveon to step4.