Lectrosonics DM1624 User manual

1
Rio Rancho, NM
DM Series Installation Guide
1
Installation Guide
Hardware and Software
DM Series Digital Audio Processors
models
DM1624, DM1612, DM812

2
DM Series Installation Guide

3
Rio Rancho, NM
DM Series Installation Guide
IMPORTANT SAFETY INSTRUCTIONS
This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous
voltage inside the enclosure -- voltage that may be sufficient to constitute a risk of
shock.
This symbol, wherever it appears, alerts you to important operating and maintenance
instructions in the accompanying literature. Please read the manual.
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 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 third
grounding prong. The wider 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.
15) WARNING -- TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPARATUS TO RAIN OR MOISTURE.

4
DM Series Installation Guide
Installation Specific Information Only
This guide covers only installation related matters. See
the Reference Guide additional details and explanations
of the DM Series digital processors.
Unpack the unit and inspect the contents
Included in the box:
Reference Manual
Power cable
5-pin de-pluggable connectors:
20 each for the DM1624
14 each for the DM1612
10 each for the DM812
CAT-5e cables (2 each) 12" with shielded RJ45
connectors
Lectrosonics screwdriver
DB9 to TRS (Stereo mini) cable – BLACK - for
laptop setup
DB9 to TRS (Stereo mini) cable – RED - for touch
panel control systems
USB cable
CD-ROM with LecNet2 software and documentation
in Acrobat PDF files
Remove all packaging and make certain all the above
materials are enclosed in the box. If not, IMMEDIATELY
call 1-800-821-1121 to report the missing components
so we can get any needed replacements on their way to
you. Ask for anyone in sales or service.
Installing the hardware into the rack
The DM1624 and DM1612 occupy two rack spaces.
The DM812 occupies a single space. There are no
special ventilation requirements. Mount with 4 rack
screws in the appropriate mounting holes – We recom-
mend using nylon washers to prevent damage to the
finish when tightening the screws.
Power is connected via the included IEC power cable.
DM processors have internal switching power supplies
that can tolerate voltages from 100-240VAC. Use an
approved power cable for installations outside the
United States.
Cabling
We recommend using lacing bars for strain relief when
mounting in a rack. Use professional audio cable with
proper shielding - two conductor plus ground/shield.
Audio connections
The analog audio inputs and outputs are connected
through 5 pin de-pluggable connectors. Strip the
insulation back only 1/8 to 3/16" and do not tin (apply
solder to) the leads.
When tightening the connector do not over tighten and
do not leave more than 1mm of exposed wire beyond
the edge of the connector.
Note the labeling on the unit for the positive and nega-
tive leads. Ground is shared between two connections
(the center pin). For balanced connections, all three
leads can be connected.
The DM1624 does not have a “pin 1 problem”.
Unbalanced and balanced input connections use the
following guidelines.
Audio inputs
Unbalanced sources (positive and ground) such as
consumer VCR’s, DVD players, etc. Positive to the +
input. Shield or negative to – and a jumper to ground.
DO NOT ACTIVATE PHANTOM POWER FOR UNBALANCED
SOURCES !! REFER TO ONLINE HELP FILES AFTER THE
SOFTWARE IS INSTALLED
Balanced differential sources should be wired as follows.
Do not connect chassis ground (shield) to either signal
conductor.
Balanced source to DM input
(3-Wire)
DM In
+
-
Source
+
-
Shield
DM In
+
-
Source
+
Unbalanced source to DM input
(2-Wire)
Shield
DM In
+
-
Source
+
Unbalanced source to DM input
(3-Wire)
Shield

5
Rio Rancho, NM
DM Series Installation Guide
Audio Outputs
All outputs are a balanced differential configuration.
Some outputs include an attenuator to reduce the signal
to mic level. Wiring is the same for either line or mic
level, as indicated in the following illustrations.
NOTE:
USING A LINE OUTPUT WITH THE DIGITAL ATTENUATION
APPLIED WITH THE CONTROL PANEL TO ACHIEVE MIC
LEVEL WILL RESULT IN ADDED NOISE
Use the outputs marked as MIC/LINE OUTPUTS for mic
level applications. Using the other outputs marked LINE
OUTPUTS with control panel attenuation can result in
up to 40 dB off additional noise.
When the DM output is connected to a balanced input,
wire it as indicated in this illustration.
Select Mic or Line either from the front panel LCD
interface or via the software GUI.
DM Out
+
-
Destination
+
-
DM Out to Balanced Input
(3-Wire)
Shield
DM Out
+
-
Destination
+
DM Out to Unbalanced Input
(3-Wire)
Shield
DM Out
+
-
Destination
+
DM Out to Unbalanced Input
(2-Wire)
Shield

6
DM Series Installation Guide
Programmable Inputs
Programmable inputs are provided to enable control
over a variety of parameters. Each input can respond to
either a contact closure or a continuous voltage. The
diagram below shows common connections to the
programmable input pins.
Each programmable input is internally pulled up through
a 100K resistor to +5V, so no external pull up resistors
Pot Connection for Analog Control of Gain
10K Linear Pot
CCW CW +5V
To Programmable Input Pin
Gnd
Contact Closure as Programmable Input
To Programmable Input Pin
Gnd
DC Voltage Source as Programmable Inpu
t
To Programmable Input Pin
0VDC (Off) to +5VDC (On)
Gnd
Programmable Input Connections
LED is on when the programmable output is active
380 Ohms
Programmable Output Pin
380 Ohms
LED is off when the programmable output is active
Programmable Output Pin
Gnd (from Programmable I/O
Pins 1, 8, 13)
1N4001
or equiv.
External
DC Voltage
Source
(<40VDC)
Relay Coil
Coil current <100mA
Programmable Output Pin
Gnd (from Programmable I/O
Pins 1, 8, 13)
Relay is on when the programmable output is active
+5VDC (from Programmable I/O
Pins 14, 20, 25)
+5VDC (from Programmable I/O
Pins 14, 20, 25)
Programmable Output Connections
are necessary. When using a continuous voltage with
one of the programmable inputs, the Function of the
programmable input must be set to either Analog In
Control or Analog Out Control on the Programmable
Inputs control tab in the GUI. See the Programmable
Input tab in the Control Panel software for setting all
programmable input parameters.
Programmable Outputs
Programmable outputs are used to indicate either
channel activity or the current state of a programmable
input. Each programmable output is the electrical
equivalent of a contact closure to ground. When a
programmable output is “active”, it conducts current to
ground. When the programmable output is “inactive”, no
current flows to ground. The maximum usable voltage
for the programmable outputs is 40V, and they will safely
conduct up to 100mADC continuous. The diagram on
the right shows some typical uses for the program-
mable outputs.
It is permissible to run LEDs from the +5VDC pins on
the programmable input connector, as long as the total
LED current for all LEDS on does not exceed 100mA.
Similarly, 5V relay coils may also be run from the
+5VDC pins on the programmable input/output connec-
tor, as long as the total coil current for all relays on does
not exceed 100mA. Note that the diagram shows an
external DC source powering the relay coil. This will be
necessary if coil voltages above 5V are needed.

7
Rio Rancho, NM
DM Series Installation Guide
PROGRAMMABLE
INPUTS/ OUTPUTS
- + - +
RS232
- + - +
1 - GND
2 - IN 1
3 - IN 3
4 - IN 5
5 - IN 7
6 - IN 9
7 - IN 11
8 - GND
9 - OUT 1
10 - OUT 3
11- OUT 5
12 - OUT 7
13 - GND
14 - +5V
15 - IN 2
16 - IN 4
17 - IN 6
18 - IN 8
19 - IN 10
20 - +5V
21 - OUT 2
22 - OUT 4
23 - OUT 6
24 - OUT 8
25 - +5V
EXPANSION
LecNet 2
3412 5
LINE OUT
USB
ccw cw
w
ccw cw
w
Programmable Inputs
Wiring Diagram Example
3 programmable inputs:
2 - 10K linear pots for volume control
1 - Toggle switch for muting function
3 programmable outputs:
LED’s for function indicators
380 to 500 Ohm resistors in-line to
avoid burnout of LEDS
NOTE:
Common connections can be used for
all Voltage and Ground can be
connected among all the devices.

8
DM Series Installation Guide
LECTRO MADE IN THE U.S.A.
PROGRAMMABLE
INPUTS/ OUTPUTS
1 - GND
2 - IN 12
3 - IN 14
4 - IN 16
5 - IN 18
6 - IN 20
7 - IN 22
8 - GND
9 - OUT 9
10 - OUT 11
11- OUT 13
12 - OUT 15
13 - GND
14 - +5V
15 - IN 13
16 - IN 15
17 - IN 17
18 - IN 19
19 - IN 21
20 - +5V
21 - OUT 10
22 - OUT 12
23 - OUT 14
24 - OUT 16
25 - +5V
113
14 25
- + - +- + - +- + - +- + - + - + - + - + - +
RS232
- + - +- + - +- + - +- + - +
- + - +- + - +- + - +
- + - + - + - + - + - + - + - +- + - +- + - + - + - +
TX
TXRX
RX
1 - GND
2 - IN 1
3 - IN 3
4 - IN 5
5 - IN 7
6 - IN 9
7 - IN 11
8 - GND
9 - OUT 1
10 - OUT 3
11- OUT 5
12 - OUT 7
13 - GND
14 - +5V
15 - IN 2
16 - IN 4
17 - IN 6
18 - IN 8
19 - IN 10
20 - +5V
21 - OUT 2
22 - OUT 4
23 - OUT 6
24 - OUT 8
25 - +5V
AB
EXPANSION
LecNet 2
DM1624
DIGITAL AUTOMATIC MATRIX MIXER
15 1613 14 17 18 19 20 21 22 23 24 9 10 11 12 13 14 15 16
3412 5678910111212345678
LINE OUT
MIC/LINE OUT MIC/LINE IN
MIC/LINE INMIC/LINE OUT
LINE OUT
LecNet DSP
2
U.S. Patent Number: 5,414,776
POWER
90-240VAC/30W
No User Serviceable Parts Inside USB
LECTRO MADE IN THE U.S.A.
PROGRAMMABLE
INPUTS/ OUTPUTS
1 - GND
2 - IN 12
3 - IN 14
4 - IN 16
5 - IN 18
6 - IN 20
7 - IN 22
8 - GND
9 - OUT 9
10 - OUT 11
11- OUT 13
12 - OUT 15
13 - GND
14 - +5V
15 - IN 13
16 - IN 15
17 - IN 17
18 - IN 19
19 - IN 21
20 - +5V
21 - OUT 10
22 - OUT 12
23 - OUT 14
24 - OUT 16
25 - +5V
113
14 25
- + - +- + - +- + - +- + - + - + - + - + - +
RS232
- + - +- + - +- + - +- + - +
- + - +- + - +- + - +- + - + - + - + - + - + - + - +- + - +- + - +- + - +
TX
TXRX
RX
1 - GND
2 - IN 1
3 - IN 3
4 - IN 5
5 - IN 7
6 - IN 9
7 - IN 11
8 - GND
9 - OUT 1
10 - OUT 3
11- OUT 5
12 - OUT 7
13 - GND
14 - +5V
15 - IN 2
16 - IN 4
17 - IN 6
18 - IN 8
19 - IN 10
20 - +5V
21 - OUT 2
22 - OUT 4
23 - OUT 6
24 - OUT 8
25 - +5V
AB
EXPANSION
LecNet 2
DM1624
DIGITAL AUTOMATIC MATRIX MIXER
15 1613 14 17 18 19 20 21 22 23 24 9 10 11 12 13 14 15 16
3412 5678910111212345678
LINE OUT
MIC/LINE OUT MIC/LINE IN
MIC/LINE IN
MIC/LINE OUT
LINE OUT
LecNet DSP
2
U.S. Patent Number: 5,414,776
POWER
90-240VAC/30W
No User Serviceable Parts Inside USB
PROGRAMMABLE
INPUTS/ OUTPUTS
1 - GND
2 - IN 12
3 - IN 14
4 - IN 16
5 - IN 18
6 - IN 20
7 - IN 22
8 - GND
9 - OUT 9
10 - OUT 11
11- OUT 13
12 - OUT 15
13 - GND
14 - +5V
15 - IN 13
16 - IN 15
17 - IN 17
18 - IN 19
19 - IN 21
20 - +5V
21 - OUT 10
22 - OUT 12
23 - OUT 14
24 - OUT 16
25 - +5V
- + - + - + - +- + - +- + - +
- + - + - + - +- + - +- + - +
TX
TXRX
RX
1 - GND
2 - IN 1
3 - IN 3
4 - IN 5
5 - IN 7
6 - IN 9
7 - IN 11
8 - GND
9 - OUT 1
10 - OUT 3
11- OUT 5
12 - OUT 7
13 - GND
14 - +5V
15 - IN 2
16 - IN 4
17 - IN 6
18 - IN 8
19 - IN 10
20 - +5V
21 - OUT 2
22 - OUT 4
23 - OUT 6
24 - OUT 8
25 - +5V
AB
EXPANSION
15 1613 14 17 18 19
3412 567
LINE OUT
LINE OUT
PROGRAMMABLE
INPUTS/ OUTPUTS
1 - GND
2 - IN 12
3 - IN 14
4 - IN 16
5 - IN 18
6 - IN 20
7 - IN 22
8 - GND
9 - OUT 9
10 - OUT 11
11- OUT 13
12 - OUT 15
13 - GND
14 - +5V
15 - IN 13
16 - IN 15
17 - IN 17
18 - IN 19
19 - IN 21
20 - +5V
21 - OUT 10
22 - OUT 12
23 - OUT 14
24 - OUT 16
25 - +5V
- + - + - + - +- + - +- + - +
- + - + - + - +- + - +- + - +
TX
TXRX
RX
1 - GND
2 - IN 1
3 - IN 3
4 - IN 5
5 - IN 7
6 - IN 9
7 - IN 11
8 - GND
9 - OUT 1
10 - OUT 3
11- OUT 5
12 - OUT 7
13 - GND
14 - +5V
15 - IN 2
16 - IN 4
17 - IN 6
18 - IN 8
19 - IN 10
20 - +5V
21 - OUT 2
22 - OUT 4
23 - OUT 6
24 - OUT 8
25 - +5V
AB
EXPANSION
15 1613 14 17 18 19
3412 567
LINE OUT
LINE OUT
Expansion I/O ports
The four RJ45 connectors on the rear panel are strictly
for interconnecting LecNet2 units together and are NOT
EtherNet, CobraNet or any other network based device
interconnects.
In a stacked configuration, one unit must be configured
as the Master and the others as Slaves. This can be
done with the front panel LCD or the GUI interface (after
it is installed).
The transmit (TX) port from the bottom row of connec-
tors on the Master connects to the RX on the top row of
the first Slave unit below it. The RX port from the
bottom row on the Master unit connects to the TX port
on the top row of the Slave below it. Connect them only
as shown.
DO NOT CONNECT THESE PORTS TO EACH OTHER ON A
SINGLE UNIT!
DO NOT CROSS THE CABLES BETWEEN UNITS!
Master/slave Configuration
When stacking multiple units, one unit is set as Master
and subsequent units are all set as Slaves. The LCD
interface is normally used to do this. Refer to the
Reference Guide LCD instructions for details on config-
uring units for stacking.
Control system interconnections
If connecting to a serial control system such as a
CrestronTM or AMX®system use the RED TRS (tip ring
sleeve or stereo mini) to DB9 cable.
IMPORTANT! – DO NOT USE THE BLACK CABLE for
Crestron or AMX connections. It is strictly for use with a
computer and will NOT work with Crestron or AMX.
MASTER
SLAVE

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Rio Rancho, NM
DM Series Installation Guide
Connect your computer using either the BLACK DB9 to
stereo mini (TRS 1/8”) cable for RS-232 communica-
tions OR the USB cable for USB control. Multiple units
may be connected using a USB hub (available at most
electronic or office supply retailers). Both cables are
included with the unit.
Select Start.
Select LecNet2.
Select DM1624 Control Panel.
The control panel will start with a connection reminder.
Click on OK.
Select CONNECT on the banner menu at the top of the
control panel screen.
Select the type of connection you are using. Your
choices are COM ports (serial), Network, USB or Extron
IPL T S.
Upon connection you will be able to program and setup
the DM1624. See the help files in the software for more
complete instructions.
HINT 1 - The GUI interface is quite intuitive. As a
recommended first step, we suggest you select Labels
from the Menu Bar and type in all the input and output
labels. This will simplify further setup steps because
you will be able to easily keep track of which input or
output you are adjusting.
HINT 2 - The right click is powerful in this interface. You
can activate quick access to a number of setup func-
tions (for example - right click in any input box in the
INPUTS tab ). It also allows some powerful cut and
paste capabilities - especially in the matrix setup and
the filter (both input and output).
Hint 3 - Presets will take about 4 seconds to switch due
to the many parameters in the unit - audio will switch off
temporarily during a preset switch to avoid feedback. If
you need quicker response with no interruption to the
audio, use macros instead - try using the macro re-
corder for making any changes. The only changes that
cannot be made in a macro are filter adjustments such
as EQ.
CrestronTM is a trademark of Crestron Electronics, Inc.
AMX®is a registered trademark of AMX Corp.
PROGRAMMABLE
INPUTS/ OUTPUTS
14 25
- + - +
RS232
TX
TXRX
RX
1 - GND
2 - IN 1
3 - IN 3
4 - IN 5
5 - IN 7
6 - IN 9
7 - IN 11
8 - GND
9 - OUT 1
10 - OUT 3
11- OUT 5
12 - OUT 7
13 - GND
14 - +5V
15 - IN 2
16 - IN 4
17 - IN 6
18 - IN 8
19 - IN 10
20 - +5V
21 - OUT 2
22 - OUT 4
23 - OUT 6
24 - OUT 8
25 - +5V
EXPANSION
LecNet 2
1
USB
Serial ports are provided for communications with remote control
systems and computerized setup the the supplied software.
Initial Setup

10
DM Series Installation Guide
IMPORTANT
The minimum required setup is necessary before the
DM processor will pass audio:
Inputs Setup - Matrix Setup - Outputs Setup
The minimum setup can also be accomplished using the
front panel LCD interface.
IMPORTANT - ANY CHANGES MADE DURING SETUP MUST
BE SAVED IN THE UNIT VIA THE PRESET MENU!!!
Click on Preset, then click on “STORE SETTINGS TO
DEVICE MEMORY AS... “, then select the preset where
you you would like to store the settings you have
created. You can also set that preset as the default, so
when the unit powers up, it goes to that preset.
Do this after any changes are made (not before).
For direct support from the factory, call
1-800-821-1121
Ask for anyone in the SALES department. They will be
able to answer your setup and/or technical questions or
will get the correct person who can help on the phone.
The software control panel will default to the “Offline”
mode. If a DM Series unit is connected to the computer,
you will need to make a connection using the control
panel as shown here.
See the next section on Installing LecNet 2 software