RCF FORUM 3000 User manual

OWNER MANUAL
MANUALE D’USO
FORUM 3000 -CONFERENCE SYSTEM
-SISTEMA PER CONFERENZE


INDEX
INDICE
ENGLISH
SAFETY PRECAUTIONS
SYSTEM DESCRIPTION
MMU 3100 MAIN UNIT RACK INSTALLATION
MMU 3100 MAIN UNIT DESCRIPTION
MMU 3100 FRONT PANEL
MMU 3100 REAR PANEL
MMS 3405P CHAIRMAN MICROPHONE
MMS 3404D DELEGATE MICROPHONE
DESKTOP MICROPHONE CONSOLE CONNECTION EXAMPLE
CONNECTION EXAMPLE
HOW TO LINK TWO MMU 3100 MAIN UNITS
SPECIFICATIONS
ITALIANO
AVVERTENZE PER LA SICUREZZA
DESCRIZIONE DEL SISTEMA
INSTALLAZIONE IN RACK 19” DELL’UNITÀ CENTRALE MMU 3100
DESCRIZIONE DELL’UNITÀ CENTRALE MMU 3100
MMU 3100 – PANNELLO FRONTALE
MMU 3100 – PANNELLO POSTERIORE
MMS 3405P – BASE MICROFONICA PRESIDENTE
MMS 3404D – BASE MICROFONICA DELEGATO
ESEMPIO DI COLLEGAMENTO DELLE BASI MICROFONICHE
ESEMPIO GENERICO DI COLLEGAMENTO
COME COLLEGARE TRA LORO DUE UNITÀ CENTRALI MMU 3100
DATI TECNICI
4
6
6
7
8
9
14
15
16
16
17
18
22
24
24
25
26
27
32
33
34
34
35
36

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IMPORTANT
Before connecting and using this product, please read this instruction manual carefully and
keep it on hand for future reference.
The manual is to be considered an integral part of this product and must accompany it
when it changes ownership as a reference for correct installation and use as well as for the
safety precautions.
RCF S.p.A. will not assume any responsibility for the incorrect installation and / or use of
this product.
WARNING: To prevent the risk of fire or electric shock, never expose this product to rain
or humidity.
SAFETY PRECAUTIONS
1. All the precautions, in particular the safety ones, must be read with special attention, as
they provide important information.
2. POWER SUPPLY FROM MAINS
a. The mains voltage is sufficiently high to involve a risk of electrocution: never install or
connect this product when its power cord is plugged in.
b. Before powering up, make sure that all the connections have been made correctly and
the voltage of your mains corresponds to the voltage shown on the rating plate on the
unit, if not, please contact your RCF dealer.
c. The metallic parts of the unit are earthed by means of the power cord.
An apparatus with CLASS I construction shall be connected to a mains socket outlet
with a protective earthing connection.
d. Protect the power cord from damage. Make sure it is positioned in a way that it
cannot be stepped on or crushed by objects.
e. To prevent the risk of electric shock, never open this product: there are no parts inside
that the user needs to access.
f. The mains plug is used as the disconnect device and it shall remain readily operable.
3. Make sure that no objects or liquids can get into this product, as this may cause a short
circuit. This apparatus shall not be exposed to dripping or splashing.
No objects filled with liquid (such as vases) and no naked sources (such as lighted candles)
shall be placed on this apparatus.
4. Never attempt to carry out any operations, modifications or repairs that are not expressly
described in this manual.
Contact your authorized service centre or qualified personnel should any of the following
occur:
-The product does not function (or functions in an anomalous way).
-The power supply cord has been damaged.
-Objects or liquids have got in the unit.
-The product has been subject to a heavy impact.
5. If this product is not used for a long period, disconnect the power cord.
6. If this product begins emitting any strange odours or smoke, switch it off immediately
and disconnect the power supply cord.
7. The terminals marked with the symbol are HAZARDOUS LIVE and their connection
is to be made by an INSTRUCTED PERSON or the use of ready-made cables is required.
IMPORTANT
WARNING
SAFETY PRECAUTIONS

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8. Do not connect this product to any equipment or accessories not foreseen.
For suspended installation, only use the dedicated anchoring points and do not try to hang
this product by using elements that are unsuitable or not specific for this purpose.
Also check the suitability of the support surface to which the product is anchored (wall,
ceiling, structure, etc.), and the components used for attachment (screw anchors, screws,
brackets not supplied by RCF etc.), which must guarantee the security of the system /
installation over time, also considering, for example, the mechanical vibrations normally
generated by transducers.
To prevent the risk of falling equipment, do not stack multiple units of this product unless
this possibility is specified in the user manual.
9. RCF S.p.A. strongly recommends this product is only installed by professional
qualified installers (or specialised firms) who can ensure correct installation
and certify it according to the regulations in force.
The entire audio system must comply with the current standards and
regulations regarding electrical systems.
10. Supports and trolleys
The equipment should be only used on trolleys or supports, where necessary, that are
recommended by the manufacturer. The equipment / support / trolley assembly must be
moved with extreme caution. Sudden stops, excessive pushing force and uneven floors may
cause the assembly to overturn.
11. Mechanical and electrical factors need to be considered when installing a professional
audio system (in addition to those which are strictly acoustic, such as sound pressure,
angles of coverage, frequency response, etc.).
12. Hearing loss
Exposure to high sound levels can cause permanent hearing loss. The acoustic pressure
level that leads to hearing loss is different from person to person and depends on the
duration of exposure. To prevent potentially dangerous exposure to high levels of acoustic
pressure, anyone who is exposed to these levels should use adequate protection devices.
When a transducer capable of producing high sound levels is being used, it is therefore
necessary to wear ear plugs or protective earphones.
See the technical specifications in loudspeaker instruction manuals to know their maximum
sound pressure levels.
13. Do not obstruct the ventilation grilles of the unit. Situate this product far from any heat
sources and always ensure adequate air circulation around the ventilation grilles.
14. Do not overload this product for a long time.
15. Never force the control elements (keys, knobs, etc. ).
16. Do not use solvents, alcohol, benzene or other volatile substances for cleaning the
external parts of this product. Use a dry cloth.
NOTES ABOUT AUDIO
SIGNAL CABLES
NOTES ABOUT AUDIO SIGNAL CABLES
To prevent the occurrence of noise on microphone / line signal cables, use screened cables only
and avoid putting them close to:
-Equipment that produces high-intensity electromagnetic fields
-Mains cables
-Loudspeaker lines.

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RCF S.P.A. THANKS YOU FOR PURCHASING THIS PRODUCT, WHICH HAS BEEN
DESIGNED TO GUARANTEE RELIABILITY AND HIGH PERFORMANCES.
SYSTEM DESCRIPTION
FORUM 3000 is a compact conference system, easy-to-
use and cost effective solution for small and medium size
meetings venues, where both a professional audio quality and
basic microphone management approach are required.
It is the ideal solution for both temporary and permanent
installations, where up to 80 microphones are needed.
A typical system includes:
-a single MMU 3100 main unit with amplifier inside
-one MMS 3405P chairman’s microphone
-up to 79 MMS 3404D delegate microphones.
It is possible to double the system capacity (up to 160
microphones) by linking two MMU 3100 main units.
The system installation is simple: you just need to plug the
chairman microphone to the MMU 3100 main unit and then
all delegate microphones in daisy-chain to it, by a single or
two lines (according to the table layout).
The MMU 3100 main unit includes an internal power supply
switch and the ‘Class-D’ amplifier to feed both all microphone
console built-in loudspeakers and also some additional
loudspeakers (having 100 V / 70 V input, total power: max. 80
W) installed in the room / hall.
Microphone wiring is made by using CAT 5FTP cables and
standard RJ 45 connectors.
Every delegate console has a latching button to freely activate
its microphone, allowing the respective delegate to speak
mixed with all the others.
The chairman’s console has an additional latching button
to get priority over all delegates (that get muted when the
priority is on).
Fix the 2 rack ears through the 6 included screws.
Note: 2 screws of the MMU 3100 main unit
chassis shall be removed.
MMU 3100 MAIN UNIT
RACK INSTALLATION
MMU 3100
MMS 3405P
MMS 3404D
MMS 3404D

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MMU 3100 MAIN UNIT DESCRIPTION
MMU 3100 main units do not have forced ventilation,
therefore P/AER-1V front ventilation panels need to be
added above and below each unit to guarantee proper
cooling.
The MMU 3100 main unit includes all necessary features for a conference system having
up to 80 microphones.
The mic / line AUX INPUT is useful to connect (for instance) a lectern microphone (even
if ‘phantom’ powered) or a wireless microphone system for public interview. This input
can be set to be mixed or with priority over all microphones (chairmen and delegates)
and can be activated through a dry closing contact or by the automatic signal detection
(named ‘VOX’ function).
The MMU 3100 amplifier provides max. 80 W on its 100 V / 70 V output for the
connection of additional loudspeakers installed in the room / hall. The MIXER OUT (line
level output) can be used to connect an additional external amplifier of another sound
reinforcement system.
Both microphones and the AUX input have a mid boost control (frequency: 2 kHz) to
increase the voice ‘presence’ and a high-pass filter useful to improve speech intelligibility.
It includes a recording output (REC OUT), a playback input (PLAY IN) and a dedicated
input and output for teleconference.
The PLAY IN input has independent bass / treble controls.
The front panel LEDs indicate the device state (ON, PROT), the AUX IN priority activation
(PRIOR) and the signal / peak level (SIG/PK).

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MMU 3100 FRONT PANEL
1SPEAKER DESK
General volume control of all loudspeakers inside desktop consoles (off / 5 steps).
Note: this coNtrol is Post – MAster (Also Affected by the MAster 8 volume control)!
2AUX INPUT volume control
AUX INPUT can be activated through a dry closing contact or by the automatic signal
detection (‘VOX’ function).
3AUX INPUT 2 kHz EQ. control
Turn it clockwise to boost (up to 10 dB) mid presence of the AUX INPUT signal.
FLAT: flat frequency response.
4 DESK IN
General volume control of all chairman / delegate microphones.
5PLAY IN volume control
6PLAY toggle button (with LED)
It opens (LED is lit) / mutes the PLAY IN i.
7REC toggle button (with LED)
It opens (LED is lit) / mutes the REC OUT [.
8Internal amplifier MASTER volume control
9LEDs
3 4 52
1 97 10
68
ON green: the device is switched on
PROT red: overload protection
orange: thermal protection
PRIOR orange: AUX IN priority
SIG/PK green: the signal level is higher than –15 dB
green + red: the signal level is in the 0 ÷ +2 dB range
red: the signal level is equal or higher than +3 dB

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MMU 3100 REAR PANEL
{ AUX INPUT (XLR socket)
choose either Mic or liNe seNsitivity by settiNg the first AUX iNPUt diP-switch q
this AUdio iNPUt is AlterNAtive to the other AUX iNPUt }with Asocket for AreMovAble
coNNector.
BALANCED CONNECTION + hot
– cold
GND ground
UNBALANCED CONNECTION
0 db = sigNAl level thAt Allows to get the AMPlifier MAXiMUM Power.
the iNterNAl ‘liMiter’ circUit helPs to Avoid the AMPlifier overloAdiNg, yet it is AdvisAble to redUce the
MAster volUMe (or AsiNgle chANNel volUMe where Atoo high sigNAl is PreseNt) wheN the sig/Pk
led is coNtiNUoUsly iNdicAtiNg red.
PMain POWER switch (0 = off; I = on)
28 27
22232526 20 18 1719 15 11
24 21 16 1314 1229

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} AUX INPUT (socket for a removable connector)
+Audio input (hot, +)
–Audio input (cold, – )
GND Ground
CMD IN Input command to open the AUX INPUT
when shorted to ground
choose either Mic or liNe seNsitivity by settiNg the first AUX iNPUt diP-switch q.
this AUdio iNPUt is AlterNAtive to the other AUX iNPUt {with Xlr socket.
q AUX INPUT dip-switches:
1 LINE – MIC LINE: AUX INPUT sensitivity
is set to LINE level.
MIC: AUX INPUT
sensitivity is set to MIC
level.
2 OFF – PHANTOM OFF: AUX INPUT phantom
power is off.
PHANTOM: AUX INPUT
phantom power is on.
3 OFF – VOX ON OFF: the AUX INPUT VOX
function is off.
VOX ON: the AUX INPUT
VOX function is on
(automatic priority when
a signal is detected on the
AUX INPUT).
4 FLAT – HI PASS
OFF: the AUX INPUT hi-
pass filter is not inserted
(flat frequency response).
HI PASS: the AUX INPUT
hi-pass filter is inserted.
e DESK INPUT (RJ 45 socket)
Input for the desktop microphone console line.
Normally, the chairman microphone is the one to be connected to this input (as first of
the line).
w SYSTEM (socket for a removable connector)
GND Audio input ground
IN Unbalanced audio input directly sent to the mix
GND Output command ground
CMD OUT Output command (with reference to ground) activated
when the chairman desktop microphone has got priority.

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r Dip-switches:
1FLAT –
HI PASS DESK-IN
FLAT: the audio hi-pass filter
is not inserted (flat frequency
response) on all desktop
microphones (delegates and the
chairman).
HI-PASS DESK-IN: the audio hi-
pass filter is inserted on all desktop
microphones (delegates and the
chairman).
2MIX –
AUX IN PRIORITY
MIX: the AUX INPUT (when
open) is mixed with all desktop
microphones (delegates and the
chairman).
AUX IN PRIORITY: the AUX INPUT
(when open) has priority over all
desktop microphones (delegates and
the chairman).
3SHORT –
VOX REL. LONG
SHORT: the AUX INPUT VOX
function release time is short (c.
3 s).
VOX REL. LONG: the AUX INPUT VOX
function release time is long (c. 30 s).
4 LOW – VOX SENSITIVITY HI
LOW: the AUX INPUT VOX
function sensitivity is low.
The signal threshold is – 45 dBu
(necessary level to open the
input).
VOX SENSITIVITY HI: the AUX INPUT
VOX function sensitivity is high.
The signal threshold is – 55 dBu
(necessary level to open the input).
5 SYSTEM – PRE-IN DIRECT LINK
SYSTEM: (default setting) all
desktop microphones and
the AUX INPUT are directly
connected to the MMU 3100
internal amplifier.
PRE-IN DIRECT LINK: the MMU 3100
internal amplifier is only driven by the
PRE IN ]audio input.
All desktop microphones and the
AUX INPUT can be connected to
the MMU 3100 internal amplifier
by linking (either directly or through
a signal processor, i.e. a DSP, an
equaliser, etc.) the MIXER OUT oto
the PRE IN ].

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t TREBLE tone control of the PLAY IN i.
y BASS tone control of the PLAY IN i.
u GAIN control of the PLAY IN i.
i PLAY IN (audio input, RCA socket)
The audio output of a recorder (or a CD / MP3 player, a tuner, etc.) can be connected to
this input.
oMIXER OUT (audio output, RCA socket)
Audio output that sends the same signal routed to the internal amplifier. It can be used
to connect, for instance, either an external mixer or an additional amplifier or to insert a
digital signal processor, which returns to the PRE IN ](in the latter case, the SYSTEM –
PRE-IN DIRECT LINK dip-switch needs to be set to PRE-IN DIRECT LINK).
p REC OUT GAIN
Output level control of the REC OUT [.
[ REC OUT (audio output, RCA socket)
Audio output available for the connection of a recorder.
] PRE IN (audio input, RCA socket)
Direct input to the internal MMU 3100 amplifier.
iMPortANt: this iNPUt is oPeN oNly wheN the systeM – Pre-iN direct liNk diP-switch is set Pre-
iN direct liNk. iNthis cAse, All desktoP MicroPhoNes ANd the AUX iNPUt cAN be coNNected to
the MMU 3100 iNterNAl AMPlifier by liNkiNg (either directly or throUgh AsigNAl Processor, i.e. A
dsP, AN eqUAliser, etc.) the MiXer oUt oto the Pre iN.
A TELECONF. OUT (audio output, RCA socket)
Audio output available for the link to another conference system.
S TELECONF. IN (audio input, RCA socket)
Audio input for the signal coming from another conference system.
DDESK MIC 2kHz EQ. control
Turn it clockwise to boost (up to 5 dB) mid presence of all desktop microphones.
FLAT: flat frequency response.

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GConnector with fuse for the mains power cord.
Before connecting the power supply cord, verify that the apparatus voltage (230 or 115 V ac)
corresponds to the available mains supply.
Note: the fUse tyPe is MArked oN the reAr PANel (below the MAiNs coNNector).
F Amplifier output to additional loudspeakers
Output: 100 / 70 V constant voltage line, max. power: 80 W.
Each loudspeaker shall have a line transformer with the input voltage equal to the line
voltage (70 / 100 V). The loudspeaker total power shall not be higher than the amplifier
maximum power (80 W).
100 V CONSTANT VOLTAGE LINE
COM 70V 100V
70 V CONSTANT VOLTAGE LINE
COM 70V 100V

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MMS 3405P CHAIRMAN MICROPHONE
The desktop chairman microphone console has two latched buttons:
-The one on the right (when pressed) opens its microphone mixed with all other activated
MMS 3404D delegate microphone consoles.
-The one on the left (when pressed) opens its microphone with priority over all delegates,
which microphones are muted until this button is released (pushed again).
-This function allows the chairman to take the system control.
Each button is completed with a red LED (lit when the button is pressed).
The microphone capsule has a cardioid pattern and a red light-ring that is lit when the
microphone is open. Its gooseneck is 46 cm long.
The loudspeaker inside the console assures a good sound reinforcement in small size
rooms.
Important: the console loudspeaker Is always muted when at least one of the two latchIng
buttons Is pressed.
The system can also have two or even more chairman consoles that need to be cascaded
at the beginning of the line, getting a sort of graduated priority precedence.
The first chairman console (the one directly connected to the MMU 3100 main unit) has
the highest priority.
All connections are made through CAT 5 FTP cable.
It has two outputs for two separate lines of delegates (useful when in horseshoe table
configuration).
1Gooseneck microphone with red light-ring.
2Internal loudspeaker.
3Latching button (with red LED) to talk mixed with all other microphones.
4Latching button (with red LED) to talk with PRIORITY over all other microphones.
43
2
1
REAR PANEL
IN :
RJ 45 connector to be linked to the MMU 3100 DESK INPUT e.
OUT 1 :
RJ 45 connector to be linked to a MMS 3404D delegate console (or another MMS 3405P
chairman console).
OUT 2 :
RJ 45 connector to be linked to a MMS 3404D delegate console (or another MMS 3405P
chairman console).
OUT 1
To
MMS 3404D
IN/OUT 1
From
MMU 3100
OUT 2
To
MMS 3404D
REAR PANEL

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3
2
1
MMS 3404D DELEGATE MICROPHONE
The desktop delegate microphone console has a latched button that opens its
microphone mixed with all the others.
The button is completed with a red LED (lit when the button is pressed).
In case of chairman priority, the microphone gets muted.
The microphone capsule has a cardioid pattern and a red light-ring that is lit when the
microphone is open. Its gooseneck is 46 cm long.
The loudspeaker inside the console assures a good sound reinforcement in small size
rooms.
Important: the console loudspeaker Is always muted when Its latchIng buttons Is
pressed, even when achaIrman prIorIty Is In progress (In thIs case, It Is necessary to
release the button to lIsten to the chaIrman who Is talkIng).
All connections are made through CAT 5 FTP cable.
Max. number of consoles (chairman and delegates) that can be connected to a single
MMU 3100 main unit is 80.
Each delegate console has two inputs/outputs RJ 45 sockets (one used as input for the
cable from the previous console, the other as output to the next console).
1Gooseneck microphone with red light-ring.
2Internal loudspeaker.
3Latching button (with red LED) to talk mixed with all other microphones.
REAR PANEL
IN / OUT 1 :
RJ 45 connector to be linked to either the next or the previous MMS 3404D delegate
console (or the MMS 3405P chairman console).
IN / OUT 2 :
RJ 45 connector to be linked to either the next or the previous MMS 3404D delegate
console (or the MMS 3405P chairman console).
IN/OUT 1
From MMS 3404D
or MMS 3405P/
To MMS 3404D
IN/OUT 2
From MMS 3404D
or MMS 3405P/
To MMS 3404D
REAR PANEL

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DESKTOP MICROPHONE CONSOLE
CONNECTION EXAMPLE
CONNECTION EXAMPLE
< >
< >
MMU 3100
MMS 3405P
MMS 3404D
DESK INPUT
IN
OUT 2
IN/OUT 1IN/OUT 1
IN/OUT 1IN/OUT 1
IN/OUT 1IN/OUT 1
IN/OUT 2IN/OUT 2
IN/OUT 2IN/OUT 2
IN/OUT 2IN/OUT 2
OUT 1
MMS 3404D
MMS 3404D
MMS 3405P

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HOW TO LINK TWO MMU 3100
MAIN UNITS
It is possible to link each other two MMU 3100 main units (through the
TELECONFERENCE IN/OUT) to get a system with up to 160 desktop microphones.
Assuming that a chairman microphone has been foreseen for both MMU 3100 main
units:
-The chairman of the first MMU 3100 main unit can get priority over all the system.
-The chairman of the second MMU 3100 main unit can get priority over only the desktop
microphones linked to its outputs (the chairman and all delegates of the first MMU
3100 main unit remain in the mix).
2
1
CONNECTIONS
MMU 3100 no.1 MMU 3100 no.2
TELECONF. OUT TELECONF. IN
TELECONF. IN TELECONF. OUT
SYSTEM CMD OUT AUX INPUT CMD IN
SYSTEM GND AUX INPUT GND
< >
< >
< >
< >

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SPECIFICATIONS
MMU 3100
Max. output power (RMS) 80 W (desktop microphones), 80 W (70 / 100 V
loudspeaker output)
Constant voltage loudspeaker output 70 V (62.5 Ω) / 100 V (125 Ω)
Frequency response 50 Hz ÷ 18 kHz
T.H.D. (@ 1 kHz, nominal power) < 1 %
DESK INPUT
-Sensitivity
-Impedance
-Signal / noise ratio
-Tone control
–44 dBu (max. -24 dBu)
1 kΩ
> 70 dB
0 ÷ +5 dB @ 2 kHz
AUX INPUT, balanced
-Sensitivity (LINE)
-Sensitivity (MIC)
-Impedance
-Signal / noise ratio (LINE)
-Signal / noise ratio (MIC)
-Tone control
-‘Phantom’ power
–7 dBu (max. +13 dBu)
–44 dBu (max. –24 dBu)
10 kΩ
> 80 dB
> 60 dB
0 ÷ +10 dB @ 2 kHz
32 V (20 mA)
SYSTEM AUDIO IN, unbalanced
-Sensitivity
-Impedance
-Signal / noise ratio
–5 dBu (max. +15 dBu)
20 kΩ
> 80 dB
PLAY IN, unbalanced
-Sensitivity
-Impedance
-Signal / noise ratio
-BASS control
-TREBLE control
–7 dBu (max. +13 dBu)
20 kΩ
> 80 dB
±8 dB @ 80 Hz
±13 dB @ 10 kHz
PRE IN, unbalanced
-Sensitivity
-Impedance
-Signal / noise ratio
0 dBu (max. +22 dBu)
20 kΩ
> 80 dB
TELECONF. IN, unbalanced
-Sensitivity
-Impedance
-Signal / noise ratio
–7 dBu (max. +15 dBu)
10 kΩ
> 80 dB
MIXER OUT, unbalanced
-Max. output level
-Impedance
-Signal / noise ratio
-Inputs
+21 dBu
100 Ω
> 100 dB
DESK INPUT, AUX INPUT, PLAY IN, TELECONF IN.,
SYSTEM AUDIO IN

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REC OUT, unbalanced
-Max. output level
-Level control
-Impedance
-Signal / noise ratio
-Inputs
+21 dBu
0 ÷ +10 dB
100 Ω
> 100 dB
DESK INPUT, AUX INPUT, PLAY IN, TELECONF IN.,
SYSTEM AUDIO IN
TELECONF. OUT, unbalanced
-Max. output level
-Impedance
-Signal / noise ratio
-Inputs
+21 dBu
100 Ω
> 100 dB
DESK INPUT, AUX INPUT, PLAY IN, SYSTEM AUDIO IN
PROTECTIONS
-Amplifier
-Load
-Power supply
Short circuit, thermal
DC Offset Delay, fuse
Fuse
GENERIC
-Operating voltage
-Max. power consumption
-Dimensions (w, h, d)
-Net weight
115-230V / 50-60 Hz
240 W
442 mm, 88 mm, 230 mm (19” rack - 2 units)
4 kg

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MMS 3404D (DELEGATE) / MMS 3405P (CHAIRMAN) DESKTOP MICROPHONES
Mic. capsule: electret
Polar pattern: hypercardioid
Sensitivity: 0.56 mV / Pa
Frequency response: 70 Hz ÷ 18 kHz
Loudspeaker power: 1 W
Net weight: 1 kg
135.8
170
63
MMS 3404D MMS 3405P
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