User Manual: A1
1 Rev.0.3
PAVA System
A1
Paging Microphone A1
© 2019 Johnson Controls. All rights reserved. All specifications and other information shown were current
as of document revision date and are subject to change without notice. Tyco Fire & Security GmbH,
Victor von Bruns-Strasse 21, 8212 Neuhausen am Rheinfall, Switzerland
User Manual: A1
2 Rev.0.3
SAFETY INSTRUCTIONS
Please read these safety instructions carefully.
1. Keep this User Manual for future reference.
2. Power connectors should remain accessible for disconnection and be located
where no-one can step on or trip over them. Disconnect the equipment from the
alternating current (AC) output before cleaning.
3. The device must not be exposed to water or drips and no liquid-filled objects should
be placed on top of it. Do not use liquid or powdered detergent for cleaning. Do not
expose the device to moisture or damp areas.
4. No naked flame sources, such as lighted candles, should be placed on top of the
device.
5. The device must be installed on a safe surface. If the device is not placed on a
safe surface, it could fall and become damaged.
6. Never open the device. For safety reasons, the device should only be opened by
qualified personnel.
7. Pay attention to the connection polarity when operating equipment with a direct
current (DC) power supply. Reverse polarity connection may damage the
equipment or power supply.
8. If any of the following situations occurs, please get technical personnel to check
the device:
a) The power cord or plug is damaged.
b) Liquid has penetrated the inside of the device.
c) The device has been exposed to moisture.
d) The device does not work well or does not work according to the instruction
manual.
e) The device has been dropped and damaged.
f) The device has obvious signs of damage.
9. Wiring must be undertaken only by qualified personnel. Ensure that the appropriate
cables are used for the connections.
User Manual: A1
3 Rev.0.3
1. Contents
1. TECHNICAL DESCRIPTION .............................................................................................. 4
2. PACKAGE CONTENT ........................................................................................................ 4
3. FUNCTIONING DESCRIPTION .......................................................................................... 5
i. PTT/LATCH Mode ....................................................................................................... 5
ii. 0V/5V Mode ................................................................................................................. 5
iii. Chime ON/OFF ............................................................................................................ 5
iv. TTL/RS-485 Mode ....................................................................................................... 5
v. BUSY=LED Mode ........................................................................................................ 5
4. CONNECTION AND CONFIGURATION ............................................................................. 6
4.1 External Configuration ................................................................................................. 6
4.2 Internal Configuration ................................................................................................... 7
5. FRONTAL DESCRIPTION .................................................................................................. 7
6. TECHNICAL SPECIFICATIONS: ........................................................................................ 8
7. LIST OF ILLUSTRATIONS ................................................................................................. 8
8. LIST OF TABLES ................................................................................................................ 8
User Manual: A1
4 Rev.0.3
1. TECHNICAL DESCRIPTION
The A-1 is an advanced paging microphone for professional PA installations.
The microphone can be controlled by logical digital signals, or RS-485 communications protocol
(optional).
The sound processor has been adapted to achieve high quality results, in terms of quality,
distortion, sensitivity, broadband and S/N ratio. That is why the A-1 includes a high quality
dynamic amplifier.
The A-1 has different modes of configuration, in order to be easily integrated in any type of
installation. Additionally, it features pre-amp to provide a balanced output and preserve the
audio quality over long distances.
As an option, it is possible to configure a chime tone before and after a paging.
2. PACKAGE CONTENT
Figure 1 - Package Contents
1. A-1 Microphone
2. Gooseneck
3. 5 V DC Power supply
4. Anti-pop filter
5. XLR-5 female connector
6. User's manual
User Manual: A1
5 Rev.0.3
3. FUNCTIONING DESCRIPTION
The A1 microphone functions as an “all-call”, press to talk, single button microphone. It features
LED indicators to signal the state of the line/zone where the page will be broadcasted.
Functioning modes:
Depending on the mode that has been selected internally, the microphone can perform different
actions.
i. PTT/LATCH Mode - When the microphone selector is set to OFF, the microphone will
work in PUSH TO TALK (PTT) mode and the button should be pressed in order to make
a page. When set to ON, the first push of the button will fix the microphone to the floor
“granted” to the user to begin. A second push, will then end the transmission.
ii. 0V/5V Mode - Using the operation selector, it is possible to configure the TTL output line
signal, to indicate the use of the audio line in the system. 0V is low level signal and 5V is
high level signal.
iii.
Chime ON/OFF - This position indicates if the chime tone is ON or OFF.
iv. TTL/RS-485 Mode – The default functioning mode is TTL. The A1 can also use the RS-
485 protocol to communicate with LDA compatible units. In that case, this option should
be active and the “jumpers” situated in the correct position. This will always be activated
by the technical team because an incorrect configuration could result in the A1 failing to
function correctly.
v.
BUSY=LED Mode - This configures the operating mode when the line is busy. In the
OFF position, the microphone will not send audio or operation signals while the “BUSY
LINE” signal is active. In the ON position, the microphone will only operate over the
corresponding light indicator, sending signals of petition and audio. This mode normally
requires a microphone signal process.
User Manual: A1
6 Rev.0.3
4. CONNECTION AND CONFIGURATION
Figure 2 - Front view
4.1 External Configuration
1. Gain control: The potentiometer adjust the audio output gain.
2. PTT/LATCH selector
3. Audio+Control connector XLR 5 pole male.
Pin out:
1. GND
2. Audio -
3. Audio +
4. Operation output 0/5 V
5. BUSY input, active at 0V
4. Power supply: 5V DC
5. XLR-3 female connector for gooseneck.
1. GND
2. Audio+Power supply to the capsule
3. LED
Figure 3 - XLR5
Figure 4 - PS 5VDC
Figure 5 - XLR3
User Manual: A1
7 Rev.0.3
4.2 Internal Configuration
5. FRONTAL DESCRIPTION
On the front of the microphone are the operational buttons.
1. Talk
2. Line Busy indicator, permission to talk
3. Light indicator to signal that the capsule is active and
ready to page.
Nº
Description
CONFIG.
1
CHIME SELECT*
ON / OFF
2
MAN SELECT
0V / 5V
3
BUSY=LED
TTL=ON
ON/OFF
ON/OFF
4
RS485/MAN&BUSY
A/B
5
GAIN ADJUST
+/-
Table 1 - Configuration
Figure 6 - Board
User Manual: A1
8 Rev.0.3
6. TECHNICAL SPECIFICATIONS:
Model
LDAA1S02
Power supply
5V DC, 200mA.
Frequency response
200-15000 Hz (+/-2dB).
Audio output
750mV 600 balanced
S/N ratio
100 dB (A weighting)
Sensitivity
-43 dB. at 1KHz
Direction
Axial polar hypercardioid diagram
Transducer type
Dynamic with mobile coil.
Dimensions
125 x 45 x 125 mm (width x height x depth)
Length of gooseneck
350mm
Power consumption
1W
Table 2 - Technical Specification
7. LIST OF ILLUSTRATIONS
Figure 1 - Package Contents ...................................................................................................... 4
Figure 2 - Front view .................................................................................................................. 6
Figure 3 - XLR5 .......................................................................................................................... 6
Figure 4 - PS 5VDC ................................................................................................................... 6
Figure 5 - XLR3 .......................................................................................................................... 6
Figure 6 - Board ......................................................................................................................... 7
8. LIST OF TABLES
Table 1 - Configuration ............................................................................................................... 7
Table 2 - Technical Specification ............................................................................................... 8
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