LDA Audio Tech ONE-PTT User manual

User Manual
Push To Talk Microphone ONE-PTT for ONE systems.
PTT

SAFETY INSTRUCTIONS
Please, read carefully these safety instructions.
1. Save this User Manual for future reference..
2. The equipment should not be exposed to ater or splashing and objects filled
ith liquids should not be placed on the equipment. Do not use liquid or spray detergent
for cleaning. Do not expose this equipment to et areas.
3. No flame sources, such as lighted candles, should be placed on the equipment.
4. Install this equipment follo ing this user manual. If you do not place the
equipment correctly, it may fall and be damaged.
5. Before beginning the microphone installation put an ESD bracelet on your rist
and stick the other end to any non painted metallic part inside of the equipment.
6. The equipment must be installed by qualified or trained personnel.
7. The iring must be carried out only by trained personnel. Disconnect the audio
outputs hile making connections and disconnect the equipment from the po er supply.
Be sure to use the proper cables to make the connections.
CONTENTS
1. LDA Dynamic microphone ith push to talk button.
2. Circuit board ith preamp and connectors.
3. Cable patch to fix in ONE cabinet. Includes a 36mm tap and microphone connector.
4. Cable patch for audio input connection. Includes audio and TTL.
5. ESD bracelet to avoid any damage in internal circuits.
2

INTRODUCTION
The ONE-PTT dynamic microphone adds more versatility to your ONE unit.This ne
device allo s you to have ithin your reach a public announcement input.
This Push To Talk microphone can be directly connected to the priority audio input to
bypass the back ground music. As it is directly po ered from the USB port inside the unit,
you do not need to add an external po er supply.
With the included microphone stand, you can hang this microphone to the ONE 500
side for a fast and easy call. You can also fix it to any other surface follo ing your
preferences.
DESCRIPTION
This accesory is designed to use in ONE systems, it includes an audio preamp board
and all the accessories needed to install it.
The preamp board takes power from the ONE USB port. It includes a quality
preamplifier with a gain of 40dB to convert the microphone level to an output line level
compatible with 1Vrms inputs. The included circuit also converts the push to talk signal to
a contact output, that is already prepared to be connected in the PRIO audio inputs 1 or 2.
CONFIGURATION
Connections should be made according to the quick guide located in the last page of
this manual, no further configuration is needed. With the ONE default configuration, if you
press the PTT microphone, the audio will be routed to all zones. You can change the
corresponding input settings in the PA Matrix screen menu.
Additional advanced configuration could be applied to adapt the PTT to your needs.
For example:
Enable the use of the PTT when the system is in emergency (VA) state: Enter In
advance settings by pressing ACK+OK for 3 seconds. Modify the variable called
“DAM_PA_SRC_IN_VA_CUT_THRESHOLD” by selecting ID:2299 (FW v2.0.0.2). Change
the value to 3 and input1 will be available to be used in VA state according to the system
inputs priorities.
A similar process must be done to allow the PTT if theAC power is not active (battery
mode): Enter In advance settings by pressing ACK+OK for 3 seconds. Modify the variable
called “DAM_PA_SRC_IN_BATT_CUT_THRESHOLD” by selecting ID:229A (FW
v2.0.0.2). Change the value to 3 and input1 will be available to be used in battery mode
according to the system inputs priorities. 3
Figure 1: Examples of PTT placement in a system.

QUICK INSTALLATION GUIDE
4
Rev. 1
02-2021
1.- With the equipment turned off. Open the
cover by removing the 5 screws shown in the
image on the left.
2.- Before beginning the module
installation put the supplied ESD bracelet on
your wrist and stick the other end to any
unpainted metallic part of the device.
Put the tap in the first or second
position (beginning from the upper left
corner) and tighten the nut.
4.- Fix the microphone stand using
any cabinet screw with the hang. Only one
screw is needed.
Close the device and configure
routing and volume according to your
preferences using screen menu.
3.1- Insert the ONEPTT Module in
the USB port.
3.2.- Plug the wire of the PTT
connector tap in the indicated socket.
3.3.- Plug the green connector to the
control board in the input 1 or input 2.
3.4.- Finally fix the wires to the case
with the nylon tie.