Optimus Compact User manual

9I320
05/10/2020
V5.0.002

0
9I320 05/10/2020 V5.0.002

COMPACT version 5.0.002
2
Modular audio matrix
with IP connection
COMPACT
R +D Department
Table of contents
1. INTRODUCTION ..................................................................................................................................................................... 3
2. FRONT VIEW.......................................................................................................................................................................... 4
3. REAR VIEW ............................................................................................................................................................................ 4
3.1. Power and control module............................................................................................................................................5
4. PLACEMENT OF THE BATTERY................................................................................................................................................ 7
5. CONNECTION OF PERIPHERALS TO THE CAN BUS ................................................................................................................... 9
5.1. CAN Bus transmission speed configuration.................................................................................................................10
5.2. Connection between the COMPACT and COMPACT-E units .......................................................................................11
5.3. Connection between COMPACT and CAN peripherals ................................................................................................12
6. INSERTING THE CARDS......................................................................................................................................................... 12
7. UMX-C16............................................................................................................................................................................. 14
7.1. UMX-C16 Internal settings ..........................................................................................................................................14
7.2. UMX-C16 Connection ..................................................................................................................................................15
7.2.1. INPUT Contacts ................................................................................................................................................15
7.2.2. OUTPUT Contacts.............................................................................................................................................15
8. UMX-EA3............................................................................................................................................................................. 16
8.1. Connection of UMX-EA3..............................................................................................................................................16
8.1.1. Connection of a music source ..........................................................................................................................16
8.1.2. Connection of a microphone for announcements ...........................................................................................17
8.2. UMX-EA3. Internal settings ........................................................................................................................................18
9. DISPLAY, GENERAL VIEW ..................................................................................................................................................... 19
10. NAVIGATING THROUGH THE MENUS................................................................................................................................... 19
11. STRUCTURE OF THE MENUS................................................................................................................................................. 20
12. COMMISSIONING THE UNIT................................................................................................................................................. 21
12.1. Configuration of the COMPACT network addresses....................................................................................................21
12.1.1.Changing the IP address ...................................................................................................................................21
12.1.2.Changing the Netmask .....................................................................................................................................21
12.1.3.Changing the Gateway .....................................................................................................................................21
13. OPERATIONS FROM THE FRONT PANNEL ............................................................................................................................. 22
13.1. User levels and changes ..............................................................................................................................................22
13.2. Adjusting Display Contrast ..........................................................................................................................................22
13.3. Front USB connector: Playing music from an external memory..................................................................................22
13.4. Volume zones adjustment..........................................................................................................................................23
13.5. Stop or activate all the music channels of the area.....................................................................................................24
13.6. Stop or activate a specific music channel....................................................................................................................24
13.7. Configure music channels............................................................................................................................................24
14. SYSTEM ALARMS ................................................................................................................................................................. 25
15. TECHNICAL CHARACTERISTICS ............................................................................................................................................. 29
16. COMPACT SYSTEM NETWORK SPECIFICATIONS ................................................................................................................... 30
17. SOFTWARE AND FIRMWARE VERSIONS ............................................................................................................................... 33
18. DOCUMENT VERSION TRACKING ......................................................................................................................................... 34
19. GUARANTEE ........................................................................................................................................................................ 35
WARNING. This is a Class A unit. In a domestic environment this unit may cause radio interferences. In this case the user
must take the necessary precautions.

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1. INTRODUCTION
Modular audio matrix with IP connection and monitoring functions for fully managing PA and voice alarm systems. It is the main
component of the COMPACT control system.
Incorporates a UMX-C16 card inserted in slot 1 (16 input contacts and 4 output contacts) and a UMX-EA3 card in slot 2 (card with 2
audio inputs). The 8 remaining slots are available for inserting cards UMX-C16, UMX-EA3, UMX-2M3, UMX-2SA, UMX-2SB,
UMX-MC6 or UMX-LNK.
The capacity of the matrix may be expanded using COMPACT-E units (10 slots per unit) up to a maximum of 10 units. The
COMPACT-E units allow housing cards UMX-2SA, UMX-2SB, UMX-MC6, UMX-C16 or UMX-LNK/E.
Includes the connections, monitoring system and indicators required for complying with regulation EN54-16 regarding fire
evacuation.
Main characteristics:
Dual Ethernet connection for installations with redundant
network systems. The connection is constantly monitored
and switches automatically when required.
It is equipped with two power supplies (one primary and
one secondary) for redundant installations.
Front USB input for music.
Two analogue audio inputs that are configurable for
music or announcements (voice activated or PTT).
CAN bus for communicating with the COMPACT-E matrix
and peripherals.
Reception of digital audio via an IP connection (4 simulta-
neous channels).
Reception and sending of control data via an IP connec-
tion.
Monitoring of the operation of the equipment using Call
Point software and/or basic TELNET or SSH (Secure Shell)
functions.
Configuration of the IP address in Flash memory via soft-
ware.
Constant notification (IP) of the status of the equipment
via a Heart Beat signal.
Incorporates an internal Micro SD memory with a capaci-
ty of 15 GB to store audio files to be used as pre-recorded
messages. These messages can be recorded / updated
remotely via IP, using the Call Point software.
Monitoring functions:
-of the speaker lines (short-circuit and line open).
-of the amplifiers.
-of the cards inserted in the matrix.
-of the primary and secondary power supplies.
-of the input contacts.
-of the pre-recorded messages.
Control of the volume of zones.
Management of the musical channels of the system.
Communication with external systems:
-VoIP: receiving of direct calls from any VoIP digital
telephone that uses standard SIP protocols.
Incorporates zone selection by sending DTMF tones.
Provides the possibility of protecting the access with a
password.
-Direct integration (XML, API/DLL).
Allows housing module ME-200B (front evacuation
panel).

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2. FRONT VIEW
(1) GENERAL FAULT indicator light. Yellow LED system
alarm indicator.
(2) SYSTEM FAULT indicator light. Yellow LED internal
equipment error indicator.
(3) EMERGENCY indicator light. Red LED emergency
indicator. Remains illuminated while the system is in
Emergency Mode.
(4) Buzzer. The COMPACT incorporates a buzzer that
generates an acoustic signal when an alarm is received.
(5) POWER indicator. Indicates that the unit is receiving
power.
(6) STANDBY push-button. The unit enters in low
consumption mode and turns off the music
programmes.
(7) Navigation keys and OK/CANCEL selection
(8) Front blank plate. Allows adding ME-200B module
(Fireman’s panel and voice alarm manual control).
(9) Display.
(10) CONSOLE connector. Mini USB connector. Allows
monitoring the system. Only specialised personnel.
(11) Front USB for inputting music
(12) Internal jumper for deactivating the acoustic alarm in
SYSTEM FAULT errors (see section 14).
3. REAR VIEW
1) Slot 1 –Card UMX-C16. Input and output contacts card.
See section 7. UMX-C16.
2) Slot 2 –Card UMX-EA3. Card with 2 audio inputs. See
section 8.UMX-EA3.
3) Slots 3 to 10 –Blank plates. Allow expanding the system
with cards UMX-C16, UMX-EA3, UMX-2M3, UMX-2SA,
UMX-2SB or UMX-MC6.
4) Power and control module. See section 3.1.
Figure 1
Figure 2

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3.1.Power and control module
1) Connector ETH A
Is used to connect the unit to the IP network.
(1a) SPEED indicator (yellow LED):
Speed of the network. Indicates a speed of 100 Mbps when illuminated.
The light extinguished indicates a network speed of 10 Mbps (it is highly
recommended to use a transmission speed of 100 Mbps).
(1b) LINK/ACTIVITY indicator (green LED):
When illuminated it indicates a network connection. When flashing it
indicates that data is being sent or received.
2) Connector ETH B
Is used in a redundant network as a secondary connection to the IP
network.
3) BUS CAN Contacts
Data communication bus between the COMPACT matrix, the COMPACT-
E slave and CAN peripherals.
For the connection of the CAN bus it is recommended to use a shielded
twisted pair AWG24 cable. See section 5.2. Connection between the
COMPACT and COMPACT-E units and 5.3. Connection between
COMPACT and CAN peripherals.
4) FAIL Contacts
Output relay used to indicate a system failure.
If the COM contact is linked to the NO
contact, it indicates that there are no faults or
alarms in the system. If on the other hand,
COM is linked to NC, it indicates that the
equipment is switched off or alarms detected
(figure 4).
Maximum DC charge current: 150mA
Maximum DC or AC peak charge voltage: 350V
5) GND Contact
6) INPUT Contacts CT 1, 2 and 3
The functionality and de-energized state (NC/NO) are configured through the configuration software. They may be configured
as general purpose contacts or in the evacuation system as emergency mode activation contacts, evacuation message
activated...
If you wish, the system may monitor these contacts (short-circuit or open line detection).
The detection time of the activation pulse of the input contacts is configurable through the Call Point software (0-50-100-200-
300-400-500-1000-1500-2000 milliseconds).
To connect follow figure 5. If you wish to monitor the contact, follow figure 6.
Figure 3
Figure 5
INPUT CONTACT CONNECTION WITHOUT SURVEILLANCE
Figure 6
INPUT CONTACT CONNECTION WITH SURVEILLANCE
Figure 4
COMPACT
off or
alarms
detected
No alarms

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DIPSWITCH
NUMBER
A/B DRY
CONTACT (*)
CONTACT B
REFERENCED TO
GROUND
OUTPUT
CONTACT 1
1
OFF
OFF
2
OFF
OFF
3
OFF
ON
OUTPUT
CONTACT 2
4
OFF
OFF
5
OFF
OFF
6
OFF
ON
OUTPUT
CONTACT 3
7
OFF
OFF
8
OFF
OFF
9
OFF
ON
SW2. UNION BETWEEN THE NEGATIVE SIDE
OF THE POWER SUPPLY AND THE CHASSIS
Figure 8
CONNECTION OF THE OUTPUT CONTACTS.
AS DRY CONTACTS
Figure 9
CONNECTION OF THE OUTPUT CONTACTS.
AS CONTACTS REFERENCED TO GROUND
* JOINED
DIPSWITCH 1 ON*
DIPSWITCH 2 ON*
SEPARATED
DIPSWITCH 1 OFF
DIPSWICTH 2 OFF
Figure 7
SW1. CONFIGURATION OF THE OUTPUT CONTACTS
7) OUTPUT CT Contacts
Incorporates three output contacts. Each contact has two terminals (A
and B) that are configurable using internal DIPswitches as dry contacts
or referenced to ground. To configure see figure 7.
The functionality and de-energized state (NC/NO) are configured
through the Call Point software. They may be configured as general
purpose contacts or in the evacuation system as fault notification
contacts, Emergency Mode indicator activated...
To connect as dry contacts follow figure 8. If contacts referenced to
ground are desired, follow figure 9.
* FACTORY SETTINGS
Figure 10
PRIMARY
POWER
Figure 11
SECONDARY POWER
EXTERNAL
UNIT
EXTERNAL
UNIT
Figure 10
PRIMARY
POWER
Figure 11
SECONDARY
POWER
* FACTORY SETTINGS

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Handling batteries properly:
Warning! Improper use of battery may lead to explosion. Replace the batteries with the same or equivalent type only.
Batteries may endanger life if swallowed. If a battery is swallowed, seek medical assistance immediately.
Before inserting the batteries, check whether the contacts in the device and batteries are clean and, if necessary, clean
them.
Only use new batteries.
Do not use rechargeable batteries
Never try to recharge normal batteries. There is a risk of explosion!
Never expose batteries to heat sources (e.g. radiators) or direct sunlight. There is an increased risk of leakage!
Never short-circuit the batteries.
Never throw batteries into a fire.
Do not disassemble or deform batteries.
If the equipment is not going to be used for long periods, remove the battery.
Remove leaking batteries from the device immediately. If battery acid leaks out it is essential to avoid contact with the
skin, eyes and mucous membranes! If the acid does come into contact with skin, immediately rinse the affected areas with
plenty of clear water and consult a doctor immediately. There is a risk of acid poisoning and acid burns!
Remove exhausted rechargeable battery from the device immediately! There is an increased risk of leakage
Do not throw used batteries into the household waste. The batteries must be deposited in a collection point for used
batteries.
8) POWER SUPPLY 1
24 VDC primary power input (see figure 10).
9) POWER SUPPLY 2
24 VDC secondary power input (see figure 11). The power supply inputs have been doubled; therefore, if required by the
safety standards, two independent power supplies may be connected.
10) BUS AUDIO LINK Audio bus expansion connector. it is used for connecting the COMPACT to the COMPACT-E units. To
accomplish this use 34 way flat ribbon cable with 2x17, 2.54mm IDC connectors. When installing the cable be careful to install
the connectors in the same position and side of the flat ribbon cable (see figure 16).
11) FUSE 1. 2.5A primary power fuse.
12) FUSE 2. 2.5A secondary power fuse.
13) Ground connection
4. PLACEMENT OF THE BATTERY
To activate the time schedules, the equipment incorporates an RTC (Real-time clock) whose function is to maintain the current
time. To keep the RTC powered even if the equipment is turned off, we must place a 3V lithium battery type CR2032 supplied with
the equipment.
It is advisable to replace the equipment battery at least every 5 years.

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Battery placement procedure:
1) Disconnect the power strips (POWER
SUPPLY 1 and POWER SUPPLY 2).
2) Remove the control module.
3) Insert the battery respecting the polarity indicated in
the attached drawing (positive + at the top).
4) Once placed, insert the control
module again and turn on the power.
Figure 12
Figure 13
Figure 14

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5. CONNECTION OF PERIPHERALS TO THE CAN BUS
The COMPACT device communicates with the COMPACT-E units via a CAN bus. The data flow between the COMPACT equipment
and the COMPACT-E expansion units uses a baud rate of 500 kbit/s.
With the rest of CAN peripherals of the installation (MD-30C, ME-200C, NS-CAN ...) and with an internal speed adapter that the
COMPACT device has built-in, the transmission speed is 33.3 kbit/s. This lower speed makes it possible to reach greater distances in
the connection between the peripherals and the central one. The adapter
also allows galvanically isolating the central from the equipment of the
installation, protecting it from possible wiring problems in the installation.
To communicate with these peripherals, the transmission speed of the
COMPACT unit must be set to 33.3 kbit/s, as explained in section 5.1.
If a COMPACT-E unit matches other CAN peripherals (MD-30C, ME-200C,
NS-CAN…) on the same CAN bus, it is necessary to place an external CAN
speed adapter to match the transmission speed between devices (speed
adapter model CAN-AV).
The attached table shows the transmission speed of the equipment:
Internal
adapter
Internal
adapter
Figure 15
Model
SPEED TRANSMISSION
COMPACT
33.3 kbit/s or 500 kbit/s (built-in
speed adapter)
COMPACT-E
500 kbit/s
MD-30C
33.3 kbit/s
ME-200C
33.3 kbit/s
NS-CAN
33.3 kbit/s
External bus CAN
speed adapter
(500 kbit/s -
33.3 kbit/s)
model
CAN-AV
(A465AV)

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5.1.CAN Bus transmission speed configuration
Using a PC equipped with a network card and connected to the COMPACT unit
through a switch or directly using a network cable. The PC must have the c software
installed.
1. From the PC, open a browser, enter the IP address for the unit and press INTRO.
By default the IP address is 10.1.1.1. Warning: The range of IP addresses for the
unit and the PC must match. Otherwise, the network settings of the PC or the
COMPACT must be changed in order to be in the same range (for example, the
PC could have an IP address of 10.1.100.152). See section 12.1. Configuration of
the COMPACT network addresses.
2. Enter the user name optimax, the
password 1933 and click on the Login
button.
3. Click on System.
4. Modify the Baudrate external CAN
parameter. If the COMPACT communi-
cates with a COMPACT-E slave unit, set
the speed to 500 kbit/s (factory setup).
If the COMPACT device communicates
with other peripherals (MD-30C, ME-
200C, NS-CAN ...) modify the speed to
33.333 kbit/s.
5. Click Save & restart button. Changes
will be saved and The COMPACT unit
will reboot automatically.

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5.2.Connection between the COMPACT and COMPACT-E units
Use the BUS AUDIO LINK and the CAN BUS contacts to connect the COMPACT matrix to the COMPACT-E units.
By default, the transmission speed of the CAN bus of the COMPACT unit is 500 kbit/s.
For the connection of the CAN bus it is recommended to use a shielded twisted pair AWG24 cable.
Figure 16
CAN BUS
Figure 17
AUDIO BUS

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Position
10
9
8
7
6
5
4
3
2
1
UMX-C16
•
•
•
•
•
•
•
•
-
•
UMX-EA3
•
•
•
•
•
•
•
•
•
-
UMX-2M3
•
•
•
•
•
•
•
•
-
-
UMX-2SA
•
•
•
•
•
•
•
•
-
-
UMX-2SB
•
•
•
•
•
•
•
•
-
-
UMX-MC6
•
•
•
•
•
•
•
•
-
-
UMX-LNK
•
•
•
•
•
•
•
•
-
-
5.3.Connection between COMPACT and CAN peripherals
The COMPACT matrix must communicate with the CAN peripherals of the installation (MD-
30C, ME-200C, NS-CAN ...) at a transmission speed of 33.3 kbit / s (in installations with
COMPACT-E expansion units the transmission speed should be 500 kbit / s) and it is necessary
to modify the CAN communication speed of the matrix following section 5.1. CAN Bus
transmission speed configuration.
For the connection of the CAN bus it is recommended to use a shielded twisted pair AWG24
cable. See figure 18.
6. INSERTING THE CARDS
The COMPACT model incorporates a standard issue UMX-C16 card inserted in position 1 and a UMX-EA3 card in position 2. The
remaining slots (slots 3 to 10) are available for inserting cards UMX-C16, UMX-EA3, UMX-2M3, UMX-2SA, UMX-2SB, UMX-MC6 or
UMX-LNK. All these cards occupy one slot except for model UMX-2SB, which occupies 4 slots.
The following table shows the compatibility of each card model with respect to the position in the matrix.
• COMPATIBLE
- NOT COMPATIBLE
Figure 19
(Not connected)
Figure 18
CAN PERIPHERAL
(MD-30C, NS-CAN, ME-200C…)

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To insert a card proceed as follows (to insert the UMX-2SB card consult the specific manual of said model):
1) Disconnect the power supply to the unit (POWER SUPPLY 1 and POWER SUPPLY 2 strips).
2) Remove the rear blank plate for the slot where the card is to be inserted. All cards occupy a slot except model UMX-2SB which
occupies 4 slots (refer to the UMX-2SB manual prior to installing it in the COMPACT).
3) Insert the card by fitting it into the slot guides and fasten it by means of the fastening screws.
4) Reconnect the power.
Figure 20

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SW1
CONFIGURATION OF THE OUTPUT CONTACTS
DIPSWITCH
NUMBER
A/B DRY CONTACT (*)
CONTACT B
REFERENCED TO
GROUND
OUTPUT
CONTACT 1
1
OFF
OFF
2
OFF
OFF
3
OFF
ON
OUTPUT
CONTACT 2
4
OFF
OFF
5
OFF
OFF
6
OFF
ON
OUTPUT
CONTACT 3
7
OFF
OFF
8
OFF
OFF
9
OFF
ON
OUTPUT
CONTACT 4
10
OFF
OFF
11
OFF
OFF
12
OFF
ON
7. UMX-C16
Card with 16 input contacts and 4 output contacts. Occupies slot 1 in the COMPACT.
Additional UMX-C16 cards may be inserted in slots 3 to 10.
1) POWER indicator light
Power LED indicator. Do not remove the card when it is lit.
2) INPUT CONTACTS
Input contacts 1 to 16. They may be used in evacuation systems (as activation contacts,
reset...) or as general purpose input contacts. The functionality is configured through
the Call Point software.
They may be monitored (the system detects short-circuits or open lines).
The detection time of the activation pulse of the input contacts is configurable through
the Call Point software (0-50-100-200-300-400-500-1000-1500-2000 milliseconds).
3) OUTPUT CONTACTS
The card has 4 independent output contacts. Each output has two contacts (A and B)
that are configurable using internal dipswitches (dry contacts or referenced to ground).
To configure see section 7.1. The functionality is configured through the Call Point
software.
4) GND (ground) Contacts
7.1.UMX-C16 Internal settings
* FACTORY SETTINGS
Figure 21
Figure 22

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7.2.UMX-C16 Connection
7.2.1. INPUT Contacts
7.2.2. OUTPUT Contacts
NOT MONITORED
CONTACT MONITORED
EXTERNAL UNIT
Figure 24
Figure 23
Figure 25
CONNECTION AS DRY CONTACTS
Figure 26
CONNECTION AS CONTACTS REFERENCED TO GROUND
EXTERNAL UNIT

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8. UMX-EA3
Card with 2 independent audio inputs.
Occupies slot 2 in the COMPACT. Additional UMX-EA3 cards may be inserted in
slots 3 to 10.
Each input may be configured as a music input or as a paging input. The inputs
configured as paging incorporate a talk priority usage. This priority may be
activated through a contact or may be voice activated (VOX control).
Input A has two types of connectors: RJ45 and XLR. Input B only has connector
RJ45.
The sensitivity of the input may be modified via the configuration software: AUX H
(0 dB), AUX L (-20 dB), MIC (-60 dB) or MIC (-60 dB with speak filter). Also, each
input has a potentiometer with fine adjust of the sensitivity.
WARNING: For -60 dB signals only use the XLR input.
When ordered, cards may be supplied with inputs balanced using a transformer
(T752 for a sensitivity of -60 dB and T700 for a sensitivity of -20 dB or 0 dB). This
option also allows providing power to external desktop paging systems using a
Phantom power supply (24 VDC, 100 mA).
1) POWER indicator light.
Power LED indicator. Do not remove the card when it is lit.
2) Input “A” XLR connector.
3) Input “A” audio level adjustment.
4) Input “A” RJ45 connector.
5) Input “B” RJ45 connector.
6) Input “B”audio level adjustment.
8.1.Connection of UMX-EA3
8.1.1. Connection of a music source
a) Mono music source
XLR CONNECTION
RJ45 CONNECTION
Figure 27
Figure 28
Figure 29

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b) Stereo music source
8.1.2. Connection of a microphone for announcements
Pin number 1: AUDIO H (HOT) signal.
Pin number 2: GND. If the signal is balanced, AUDIO C (COLD) signal.
Pin number 3: ACK (Acknowledge) contact. Allows synchronising with external
microphone desks (MD family).
Pin number 6: PRIORITY input contact.
Pin number 8
Shield
XLR CONNECTION
UNBALANCED SIGNAL
RJ45 CONNECTION
XLR CONNECTION
BALANCED SIGNAL
XLR CONNECTION
Figure 30
Figure 31
Figure 32
Figure 33
RJ45 CONNECTION
Figure 34
Internal jumper
J8 (input A)
J7 (input B)
GND.

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8.2. UMX-EA3. Internal settings
Using internal jumpers J1 to J8, we can configure the following
parameters:
Input impedance (If the input has a transformer it must be
configured in LOW IMPEDANCE).
Separation of the cable shield from the circuit ground.
Each one of the two inputs incorporates a jumper that
allows separating the cable shield from the circuit ground
connection.
PHANTOM power supply. Optional. When ordered, the
inputs may be separated to supply 24 VDC PNANTOM type
power. Model T700 transformer is used for sensitivities
between 0 dB and -20 dB. For sensitivities of -60 dB,
Transformer T752 is used along with an XLR connector for
the input.
The VOX priority control is configured via DIPswitch SW200.
SW200
Figure 35
INPUT A
INPUT B
INPUT
IMPEDANCE
*HIGH
J3
OFF
J6
OFF
LOW
J3
ON
J6
ON
SHIELD-
GROUND
CONNECTION
*JOINED
J8
ON
J7
ON
SEPARATED
J8
OFF
J7
OFF
PHANTOM
POWER
SUPPLY
(24VDC)
*DISABLED
J1
J2
OFF
OFF
J4
J5
OFF
OFF
ENABLED
(Transformer T752 and
sensitivity of -60 dB)
J1
J2
ON
OFF
J4
J5
ON
OFF
ENABLED
(Transformer T700 and
sensitivity 0 dB /-20 dB)
J1
J2
OFF
ON
J4
J5
OFF
ON
SW1
SW2
INPUT A
ON
ON
* OFF
OFF
INPUT B
ON
ON
*OFF
OFF
SW3
SW4
SW5
SW6
INPUT A
*SHORT (~2 sec)
OFF
ON
LONG (~5 sec)
ON
OFF
INPUT B
*SHORT (~2 sec)
OFF
ON
LONG (~5 sec)
ON
OFF
SW200. VOX CONTROL PRIORITY ON/OFF
SW200. DEACTIVATION TIME
OF THE VOX CONTROL PRIORITY
CONFIGURATION JUMPERS J1 to J8
J1
J2
J3
J4
J5
J6
J8
J7
PHANTOM POWER SUPPLY WITH T700 (0 dB/-20 dB)
PHANTOM POWER SUPPLY WITH T752 (-60 dB)
*FACTORY SETTINGS