Dynacord DMM 4650 User manual

OWNER’S MANUAL
DMM 4650 DJGITAL MESSAGE MANAGER
Description
TheDMM4650isasignaiprocessorwhichallowsforanuniversaigenerationandcontrolofaudio-signals. Itsmain
purpose is the installation in electro-acoustic rack systems, but stand-alone applications are possible as
well. The audio signals can consist of alarm, gong, voice messages but also of random combinations of
these sources. The programs were created by Dynacord (preset). Anyway, it is possible for the user
(consulting company, etc.) to modify those programs and store them as user-programs. The audio input
canbemixedwiththeDMM 4650internallygeneratedaudio signals(e.g.gongsignals withannouncements),
or given out as priority at the audiooutput (programmable).
The audio quality of the messages can be selected, depending on memory extension and different user
requirements. Withmaximum memory extension,atotalrecordingtime of 16 minutesispossible. Password
protectionfor various operationlevels is provided. For”EASY-USER”,the provided operation features are
similar to those known from cassette recorders or CD players. The control of the programs is performed
via floating inputs and floating outputs provide status messages. The priorities and functions of these
lines can be programmed individually (Setup). A computer interface facilitates saving and loading of the
unit’s configuration and its message data.
In order to ensure functional reliability, self-surveiliance and audio data verification are employed. The
alarm is ignited via internal fault-output while all warnings are logged. The DMM 4650 is maintenance-
free since no serviceable parts, batteries or accumulators are to be found inside the appliance.

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CONTENTS
INSTALLATION INSTRUCTIONS ..................................................5
FRONT PANEL ..............................................................................6
REAR PANEL.................................................................................7
USE OF THE DMM 4650 ...............................................................8
Audio functions.......................................................................8
Control functions ....................................................................8
Sequence functions................................................................9
OPERATION OF THE DMM 4650 .................................................10
General..................................................................................10
Stand-by mode ......................................................................10
Password, user password .....................................................10
Password, entry, operation end.............................................10
Priority function......................................................................10
Menu structure ......................................................................11
Operation menu diagram.......................................................11
MESSAGE......................................................................................12
General..................................................................................12
Message number, preset.......................................................12
Operation menu message .....................................................12
Soft key ”edt ..........................................................................13
Title...................................................................................13
Priority ..............................................................................13
Play all..............................................................................13
Release ............................................................................13
Free space .......................................................................13
lnfo ...................................................................................13
Checksum ........................................................................13
Delete...............................................................................13
Level adjustment, record level...............................................14
Remote recording..................................................................14
Audio quality, recording time .................................................14
Message memory extension .................................................14
Asterisk (*) after displayed running time................................14
GONG.............................................................................................15
General..................................................................................15
Gong presets.........................................................................15
Operation menu gong............................................................15
Load .................................................................................15
Edit ...................................................................................15
Title...................................................................................15
Priority ..............................................................................15
Save .................................................................................15
List of available gong parameters.......................................16
ALARM...........................................................................................17
General ...............................................................................17
Alarm presets......................................................................17
Operation menu alarm ........................................................17
Load .................................................................................17
Edit ...................................................................................17
Title...................................................................................17
Priority ..............................................................................17
Save .................................................................................17
List of available alarm parameters......................................18
ANNOUNCEMENT..........................................................................20
General ................................................................................20
Operation menu announcement………………...............…...20

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TRIGGER…………………………………………….................……21
General................................................................................ 21
Operation menu trigger ....................................................... 21
Trigger detection ................................................................. 22
Examples trigger adjustments ............................................. 22
SEQUENCE .................................................................................23
General................................................................................ 23
Sequence Presets ............................................................... 23
Operation menu sequence .................................................. 23
Load ............................................................................... 23
Priority ............................................................................ 23
Stop trigger..................................................................... 23
Step list .......................................................................... 23
Title................................................................................. 24
Save ............................................................................... 24
Sequence example.............................................................. 24
List of available step functions in a sequence .................. 25
SETTINGS....................................................................................26
General................................................................................ 26
Operation menu settings ..................................................... 26
Contrast.......................................................................... 26
Backlight......................................................................... 26
Headphones................................................................... 26
Priority ............................................................................ 26
Password ....................................................................... 26
Outputs........................................................................... 26
Bypass ........................................................................... 26
Sum gain ........................................................................ 27
lnit DMM 4650 ................................................................ 27
Format Flash .................................................................. 27
Flash space.................................................................... 27
Software ......................................................................... 27
Language ....................................................................... 27
Backup ........................................................................... 27
Restore........................................................................... 28
RS 232 ........................................................................... 28
Clock .............................................................................. 28
SELF-TEST................................................................................. 29
General ............................................................................. 29
Operation menu self-test .................................................. 29
CONNECTIONS.......................................................................... 30
Control inputs and control outputs Port A - D.................... 30
General .......................................................................... 30
Control levels and currents ............................................... 30
Inputs ............................................................................. 30
Outputs........................................................................... 31
Installation example .......................................................... 31
Inputs ............................................................................. 31
Outputs........................................................................... 31
Audio inputs and outputs................................................ 32
Remote, RS 232 connection, data backup ....................... 33
General .......................................................................... 33
Connection REMOTE/RS 232........................................ 33
Interface settings............................................................ 33
Backup, Restore commands, priority ............................. 33
List of REMOTE commands........................................... 34
Terminal programs ......................................................... 34

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FACTORY PRESETS......................................................................36
Factory presets, defaults.......................................................36
List of trigger signals........................................................... 36
List of factory preset sequences............................................37
List of factory preset gong signals.........................................45
List of factory preset alarm signals........................................47
Troubleshooting........................................................................47
FAQ’S, hints.............................................................................48
Examples for alarm texts....................................................... 50
Block diagram........................................................................ 51
Dimensions............................................................................52
Specifications...........................................................................53
Warranty ................................................................................ 54

5
IMPORTANT SAFETY INSTRUCTIONS
The lightning flash with arrowhead
symbol, within an equilateral triangle
is intended to alert theproduct’s
enclosure that may be of sufficient
magnitude toconstitute a risk of
electric shock to persons.
The operating and maintance
(servicing) instructions in the litera-
ture accompanying the appliance.
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 a damp cloth.
7. Do not block any of the ventilation openings
Install in accordance with the manufactures instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that
produce heat.
9. Only use attachments/accessories specified by the manufacturer.
10. 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.
For US and CANADA only:
Do not defeat the safety purpose of the grounding-type plug. Agrounding type plug has two blades and a third
grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does
not fit into your outlet, consult an electrican for replacement of the absolete outlet.
IMPORTANT SERVICE INSTRUCTIONS
CAUTION:These servicing instructions are for use by qualified 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. Refer all servicing to qualified service
personnel.
1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed
when s
ervicing the appliance.
2. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs
to be operated and is connected to the mains
3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.
4. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal
enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times.
The minimum distance between parts carrying mains voltage and any switches or breakers that are not
connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times.
5. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only
permissible when using original parts.
6. Altering the circuitry without prior consent or advice is not legitimate.
7. Any work security regulations that are applicable at the location where the appliance is being serviced have to
be strictly obeyed. This applies also to any regulations about the work place itself.
8. A l l instructions concerning the handling of @ - circuits have to be observed.
Note: SAFETY COMPONENT (HAS TO BE REPLACED WITH ORIGINAL PART ONLY)

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FRONT PANEL
1. INPUT MIC
XLR-socket for the connection of a microphone when
recording a message. By using a short test-sample,
the level is automatically adjusted and the setting is
saved.
Thisinput can also be usedfor making announcements.
2. INPUT LINE
RCA-type sockets for the connection of stereo or
monaural audio signal sources (tape deck, CD player)
when recording a message. A wired in parallel OdBu
socket on the rear panel is also provided. By using a
shorttest-sample,the level is automaticallyadjustedand
the setting is saved.
Thisinput can also be usedfor making announcements.
3. PHONES
Stereo phone jack 1/4" (6.3 mm) to pre-listen to
messages, gong and alarm signals via headphones.
Wired in parallel, a OdBu socket is provided on the rear
panel.
4. Multi-function Display
Back-lit LC display, 2 lines with 16 characters, each.
The display lights up by pressing any key.
ThedisplayisdimmedwhenevertheEXIT-key gets pres-
sed or no key is pressed for at all within a short while.
5. SOFT KEY
Dependingontheselectedoperationmode,the soft keys
are used in various ways. The according function is
indicated on the display.
6. CURSOR
CURSOR-keys to control the cursor on the display and
for modifying data.
7. RECORDER
Keys for ...
TITLE skip back, REWIND, PLAY/STOP, REC, FAST
FORWARD, TITLE skip forward.
8. EXIT
Key for exiting the edit mode in order to prevent
unauthorizedoperation. Eachpressingofthekeyswitches
back one menu stage.
9. POWER
TheLED lightswhenever theDMM 4650is readyfor ope-
ration. In case the LED BLINKS you should contact a
DYNACORD service center.

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10. 24 V DC power supply
2flat-pinplugs 114" (6.3 mm) forconnectionto emergency
power supply (battery) or other external power sources.
Please mind the correct polarity (+-).
1 1. REMOTE
The 9-pole D-SUB connector ”Remote-Control RS-232”
is a serial computer interface for data transfer and ser-
vice functions.
PORT A-D
All inputs and outputs are provided in 2-poie floating de-
sign and isolated from the DMM 4650 circuitry and
adjacent lines.
Each input is realized as anAC opto-coupler (AC floating
polarity).
Each output has a floating relay contact.
Each port connector (DB 25) has 4 inputs, 4 outputs, and
per port +24 V line and ground potential conductors.
Bymeans ofthe 24V DCvoltage, it is possible to connect
external floating control keys as well as contacts directly.
All inputs and outputs and their corresponding functions
can be freely assigned or a factory preset can be recalled
instead.
REAR PANEL
12. PORT A
4 control inputs and 4 trigger outputs
1 fault output (alarm on defect of the appliance)
1±24V DC, 90 mA power source
13. PORT B
Control inputs, trigger outputs and ±24 V DC
14. PORT C
Control inputs, trigger outputs and ±24 V DC
. optionally retrofitted
15. PORT D
Control inputs, trigger outputs and ±24 V DC
. optionally retrofitted
16. PRE-OUT
RCA-type socket, pre-listen
17. REC-INP
RCA-type socket, recording, announcement
18.OUTPUT
3-pole XLR-type connector (audio output) electronically
balanced (transformer can be retrofitted).
19. INPUT
3-pole XLR-type connector (audio input) electronically
balanced (transformer can be retrofitted).

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Use of the DMM 4650
The DMM 4650 can be used in both, incorporated in a rack shelf system or as stand-alone unit. The installer should
automate the daily sequences by external control keys, sensors, contacts and the corresponding unit settings. This
applies for gongs, alarms, messages and their combinations, as well as for recordings of variable announcements.
Thiscontributesto a considerableadvantagein the easeofuse since manuallyoperating the applianceisnot necessary
anymore.
Often used functions of the DMM 4650 are directly implemented as factory presets and can be utilized without any
additional programming effort. By editing the default values and storing them into a user preset a customer-optimized
configuration is quickly developed.
Audio function
The audio signals of the electro-acoustic sound reinforcement system are looped via INPUT and OUTPUT to the
power amplifier. The SUM control can be programmed for this stand-by position. In case of failure a stand-by relay
takes over the connection. When starting a sequence via control line, the desired audio signal gets generated (DMM
SIGNAL) and fed to the OUTPUT via the programmable DMM-control. The controls (DMM, SUM) defined within the
sequence determine, whether the two audio signals are merged or the one gains priority over the other.
The MIC, LINE input is used for recording a message and can also be used for announcement purposes. The
headphones outputs PRE-LISTEN and PRE-OUT are for monitoring the DMM signals without actually starting a
transmission.
Control function
A maximum of 16 floating inputs are provided for integration into a sound reinforcement installation. Their use and
polarity can be freely programmed. A maximum of 16 floating relay contacts are provided to be used as control
outputs. The inputs and outputs are divided into 4 Ports (A, B, C, D,); where Port A also contains a fault contact.

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Each of the 4 ports also supplies a power source in order to facilitate the connection of floating contacts. The ground
andearthing conditionsare shown in the above diagram. The strictseparation ofcontrol andaudio signalsguarantees
the trouble-free installation.
Sequence function
The following example shows in sequence the necessary steps from closing the contact of an external switch to
listening to the audio signal:
A switch is connected to one of the DMM 4650’s control inputs (Al - D4). The desired input is selected in the trigger
menu. Logic level (high, low), delay, and function (dyn, stc, latch) can be set. The desired sequence (Sxx) gets
chosen here as well.
For this sequence, the actions of the DMM 4650 are programmed step by step. Standard sequences are provided as
factory presets. They can be modified as need arises and stored as user presets.
Example of a sequence: set output (lamp indicator), audio control SUM off, audio control DMM -3 dB, wait for input
release, after release start alarm, delay 10 sec. (alarm duration), end.
This sequence is entered line-by-line with special commands (list page 25) and - including name and
priority - stored as a preset. If an appliance uses unaltered functions on a regular basis, it is also possible to save
these sequences via the RS 232 interface.

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OPERATING THE DMM 4650
General
All adjustments carried out at the appliance remain in memory even if the appliance is not connected to a
power source (EPROM).
Pressing the EXIT-key lets you step back and forth through the levels of the operation menu tree (page 1 1).
The stand-by mode is entered by pressing the EXIT-key when in the ”main menu” ’
If no key is pressed within a period longer than 5 minutes, the appliance enters the stand-by mode automatically
(except during recording and restore).
Stand-by
When the DMM 4650 is connected to a power source, the green POWER-LED lights, the display is dimmed,
and the relay outputs are set to their preprogrammed states according to the system’s configuration. This
stand-by status is remained until a control input starts a sequence. The display shows the sequence’s name
and number for the duration of the sequence. After completion of the sequence, the DMM 4650 re-enters
stand-by mode.
The states of the control ”outputs”, the audio relay ”bypass”, and the ”sum level” setting during stand-by
operation are set in the operation menu ”System setup” (page 26).
Password
Password-protection prevents the DMM 4650 from unauthorized operation. Three distinct user levels are available
which can be accessed by entering the respective password. As factory defaults, ”l 1 1 1 ” is programmed for Level 1
(easy operation), ”2222” for Level 2 and ”3333” for Level 3 (installer). Individual modification for each user is possible.
The menu tree diagram (page 1 1) shows which access is assigned to the respective user level.
Password entry, operation end
Pressing any key on the DMM 4650’s front panel, ”Password ?” appears on the display. Using the cursor keys you
have to enter a 4-digit number and confirm it with the menu key ok. After entering the correct 4-digit password, the
display shows the number of your user level. Using the cursor keys you are able to select the desired menu. The
EXIT-key cancels the operation and the appliance is protected against unauthorized use.
Priority function
With the DMM 4650 provides the opportunity to set priorities from 0 to 99; where 99 represents the highest priority
level. Setting the priority level leads in different results.
The priority of a sequence is defined by its free programmable priority setting (menu ”sequence” ”priority”). This
determines, whether e.g. a fire alarm sequence cancels a gong control sequence. Not the control line of an input, but
thepriority number of the triggered sequence determines its priority. With equal priorities, thesequence that had been
started first remains valid.
The selected user level states the priority for the operation on the appliance. User level 1 = priority no. 33, user level
2 = priority no. 66, and user level 3 = priority no. 99. Modifying the default for lower user levels is performed within the
menu ”System setup” ”priority”’. The setting of the user priority controls, whether an operator gets interrupted by an
important sequences (sequence priority).
Users are able to modify messages, gongs, and alarms and save them as user presets. Depending on the actual user
level, the programs are automatically provided with the corresponding user priority numbers (see above). They are
maintained for the case that the original preset’s priority is lower. In this way it is guaranteed that user 1 cannot modify
the presets of user 2. In order to allow access for other users, the priority allocation can be modified downwards (lower
priority) by the respective user before storing a preset
(menu: ”message > priority”, gong” > ”priority”, ”alarm” > ’priority”)
If recording a message via remote recording, the priority number of the recording sequence is transferred to the
message.