User Manual

Axiwi AT-350

📄 Product Sheet
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Axiwi AT-350

1. Device Diagram

Element

Function

1. Power Button

Turns the device on and off

2. Micro USB Port

Charges the battery using a USB cable

3. 3.5 mm Jack

For connecting a headset with microphone

4. Antenna

Antenna for transmitting / receiving transmissions

5. LCD Display

Provides important information to the user

6. TALK Button

Turns transmission (microphone) on and off

7. MENU Button

Unlocks channel change

8. UP Button

Used to increase transmission reception volume and change channel

9. DOWN Button

Used to decrease transmission reception volume and change channel

10. LED Indicator

Indicates battery charging status (Red - charging, Green - charged)

11. Belt Clip

Used to attach the device

12. Battery Contacts

Used for charging the device in a dedicated multi-charger

⚠ Note
Before configuring the AT-350 system, it is recommended to connect the headsets with microphones to the 3.5 mm jack sockets on the devices.

2. Display Diagram

Icon

Function Description

Master Mode

Information about MASTER mode

Signal

Information about signal reception in devices

Microphone On

Indicates that transmission (microphone) is on

Microphone Off

Indicates that transmission (microphone) is off

Battery

Indicates battery status

Channel

Indicates channel number

Volume

Transmission reception volume level: 00 – 06

3. Starting the AT-350

Activating MASTER mode

  1. Press and hold the power button ⏻ and the ▲ button simultaneously for approx. 2 ~ 3 seconds.
  2. The LCD display will turn on, and a voice message MASTER ON will be heard in the headset.

Activating SUBMASTER mode

  1. Press and hold the power button ⏻ and the ▼ button simultaneously for approx. 2 ~ 3 seconds.
  2. The LCD display will turn on, and a voice message TALK ON will be heard in the headset.

Activating FOLLOWER mode

  1. Press and hold the power button ⏻ for approx. 2 ~ 3 seconds.
  2. The LCD display will turn on, and a voice message SLAVE ON will be heard in the headset.

Turning off the device

  1. Press and hold the power button ⏻ for approx. 2 ~ 3 seconds.
  2. The LCD display will turn off, and a voice message POWER OFF will be heard in the headset.

4. Device Modes

Graphic

Operating Mode

Master

Activated as master

Submaster

Activated as submaster

Connected

Connected to master

Follower

Activated as follower

MASTER MODE

MASTER is a device that enables communication for the entire group and manages it. Each communication channel in the Axiwi AT-350 system must have one device operating in MASTER mode. If there is no device in this mode on the channel or it turns off, the entire group loses the ability to communicate with each other.

After activating MASTER mode and connecting a microphone to the jack, the user of such a device can immediately communicate with the group. None of the users of SUBMASTER or FOLLOWER devices can mute or remove the "master" from the group.

SUBMASTER MODE

SUBMASTER is a device that, similar to MASTER, can communicate with the entire group immediately after activation, but it does not have the MASTER's functions. A maximum of 5 devices in SUBMASTER mode can operate on one channel, but this blocks the ability to transmit (speak into the microphone) for devices in FOLLOWER mode. Turning off a device in SUBMASTER mode will not cause any communication disruptions for the entire group.

After activating SUBMASTER mode and connecting a microphone to the jack, the user of such a device can immediately communicate with the group. The MASTER user and FOLLOWER users cannot mute or remove the SUBMASTER from the group.

FOLLOWER MODE

FOLLOWER is a device that can communicate with the entire group or only be an audio transmission receiver. An AT-350 in FOLLOWER mode can only join or leave group communication. Simultaneously, 5 users + 1 MASTER (if no SUBMASTER devices are operating in the group), i.e., 6 devices operating in full duplex, can communicate with each other. If a 7th user joins the conversation, the AT-350 user in FOLLOWER mode who has had communication mode (microphone on) enabled for the longest time is automatically removed from communication mode.

5. Volume Level

  1. Press the ▲ (UP) / ▼ (DOWN) button, the [VOL] symbol.
  2. Change the volume level by pressing the ▲ (UP) / ▼ (DOWN) buttons.
  3. If no buttons are pressed, the screen will return to the default state after 1.5 seconds.
  4. The audio reception level can be adjusted from 00 to 06.

6. Changing the Channel

  1. Press the MENU button, the [CH] symbol will start flashing.
  2. Change the channel using the ▲ (UP) / ▼ (DOWN) buttons.
  3. Press the MENU button again to confirm the channel selection.
  4. Channel memory function: The device remembers the previous channel number after restarting.

7. Turning Transmission On / Off (applies to FOLLOWER)

Turning transmission (microphone) on

  1. Press the TALK button.
  2. The microphone on symbol will appear on the display, and a voice message TALK ON will be heard in the headset.

Turning transmission (microphone) off

  1. Press the TALK button.
  2. The microphone symbol will disappear from the display, and a voice message TALK OFF will be heard in the headset.

8. Option for managing the group of FOLLOWERS

Confirms blocking microphone transmission on all devices in FOLLOWER mode on the channel. This does not apply to devices in SUBMASTER mode.

  1. On the MASTER device, press and hold the ▼ (DOWN) button for approx. 3~5 seconds.
  2. The locked microphone symbol will appear on the FOLLOWER device's display, and a 'toot-toot' voice message will be heard in the headset.
  3. At this point, the user in FOLLOWER mode cannot communicate in the group.

Unblocking transmission for FOLLOWER

  1. On the MASTER device, press and hold the ▼ (DOWN) button for approx. 3~5 seconds.
  2. The locked microphone symbol will disappear from the FOLLOWER device's display, and a 'toot-toot' message will be heard in the headset.

9. Battery Charging Status

  1. The device can be charged using a Micro USB cable.
  2. During charging, the red LED on top of the device lights up.
  3. When charging is complete, the green LED lights up.
  4. The remaining battery level is displayed on the battery icon.
  5. When the battery level is low, a "BATTERY LOW" sound signal (10 times for 5 min.) is heard in the headset, and the battery icon flashes.

10. Technical Specification

Parameter

Value

Frequency band

863.15 MHz ~ 865 MHz

Modulation

GFSK

Number of channels

8

Simultaneous full-duplex communication

Up to 6 users (1 MASTER + 5 SUBMASTER / FOLLOWER)

Communication modes

MASTER, SUBMASTER, FOLLOWER

Frequency per channel

863.15, 863.40, 863.65, 863.90, 864.15, 864.40, 864.65, 864.90

Frequency response

Below 300 kHz

Transmission output power

10 mW

Transmission range

+/- 300 meters line of sight

Battery capacity

Li-Pol 3.7 V 1300 mAh

Battery operating time

Max. 10 hours

Battery charging time

~ 4 hours

Dimensions

38 x 78 x 19 mm

Weight

70 g

Charging port

Micro USB

Headset jack

3.5 mm Jack

Ingress Protection (IP) rating

IP54