Grandstream Networks GMD1208 User manual

Grandstream Networks, Inc.
GMD1208
Desktop Wireless Microphone
User Guide

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GMD1208 User Guide
Version 1.0.1.31
COPYRIGHT
©2020 Grandstream Networks, Inc. http://www.grandstream.com
All rights reserved. Information in this document is subject to change without notice. Reproduction or
transmittal of the entire or any part, in any form or by any means, electronic or print, for any purpose without
the express written permission of Grandstream Networks, Inc. is not permitted.
The latest electronic version of this guide is available for download here:
http://www.grandstream.com/support
Grandstream is a registered trademark and Grandstream logo is trademark of Grandstream Networks, Inc.
in the United States, Europe, and other countries.
CAUTION
Changes or modifications to this product not expressly approved by Grandstream, or operation of this
product in any way other than as detailed by this guide, could void your manufacturer warranty.
WARNING
Please do not use a different power adaptor with devices as it may cause damage to the products and void
the manufacturer warranty.

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GMD1208 User Guide
Version 1.0.1.31
FCC Caution:
Any Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.
RF Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

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GMD1208 User Guide
Version 1.0.1.31
ISEDC Warning
This device complies with Innovation, Science and Economic Development Canada License exempt RSS
standard(s). Operation is subject to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received, including interference that may
cause undesired operation of the device.
Le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique
Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux
conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d'en compromettre le fonctionnement.
The device is compliance with RF exposure guidelines, users can obtain Canadian information on RF
exposure and compliance.
Le présent appareil est conforme
Après examen de ce matériel aux conformité ou aux limites d’intensité de champ RF, les utilisateurs
peuvent sur l’exposition aux radiofréquences et compliance d’acquérir les informations correspondantes.
For CE:
Frequency Range
Transmit Power
Bluetooth
2402~2480MHz
3.60dBm
BLE
2402~2480MHz
3.80dBm
2.4G Radio
2402~2480MHz
5.41dBm

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GMD1208 User Guide
Version 1.0.1.31
Table of Content
DOCUMENT PURPOSE .................................................................................................9
CHANGE LOG..............................................................................................................10
Firmware Version 1.0.1.31...................................................................................................................10
WELCOME ................................................................................................................... 11
PRODUCT OVERVIEW ................................................................................................ 12
Feature Highlights................................................................................................................................12
GMD1208 Technical Specifications .....................................................................................................12
GETTING STARTED.....................................................................................................14
Equipment Packaging..........................................................................................................................14
Product Description..............................................................................................................................15
GMD1208 Wireless interface: 2.4G / BT .............................................................................................16
Powering up/off the GMD1208 ............................................................................................................16
Power on.......................................................................................................................................16
Power off.......................................................................................................................................16
Restarting the GMD1208 .....................................................................................................................16
Charging the GMD1208.......................................................................................................................17
DEPLOYMENT SCENARIOS .......................................................................................18
Professional usage: Small Meeting Room...........................................................................................18
Using single GMD1208.................................................................................................................18
Using two GMD1208 connected to GVC3220 ..............................................................................18
Education Usage: Remote Classroom.................................................................................................19
Personal Usage ...................................................................................................................................19
CONNECTION MODES ................................................................................................20
2.4G Mode ...........................................................................................................................................20
BT Mode (Bluetooth Mode)..................................................................................................................20
UAC Mode ...........................................................................................................................................20

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GMD1208 User Guide
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CONNECTING THE GMD1208.....................................................................................21
Connecting GMD1208 to GVC3220 (2.4G) .........................................................................................21
Pairing Steps ................................................................................................................................21
Successful Connection .................................................................................................................22
Pairing Timeout.............................................................................................................................23
Unpaired .......................................................................................................................................23
Connecting GMD1208 to Host (BT Mode)...........................................................................................23
Pairing Steps ................................................................................................................................23
Successful Connection .................................................................................................................23
Unpaired .......................................................................................................................................23
Connecting GMD1208 to Laptop via USB Cable (UAC Mode) ...........................................................24
Connection Steps .........................................................................................................................24
USING THE GMD1208 .................................................................................................25
2.4G Mode ...........................................................................................................................................25
Idle Status.....................................................................................................................................25
Host incoming/outgoing call..........................................................................................................25
Host in call ....................................................................................................................................25
BT Mode...............................................................................................................................................25
Idle Status.....................................................................................................................................25
Host incoming/outgoing call..........................................................................................................25
Host in call ....................................................................................................................................25
UAC Mode ...........................................................................................................................................25
Idle Status.....................................................................................................................................25
Host incoming/outgoing call..........................................................................................................26
Host in call ....................................................................................................................................26
Mute/Unmute Call ................................................................................................................................26
UNDERSTANDING LED INDICATORS ........................................................................27
GMD1208 FUNCTIONALITIES.....................................................................................29
MAINTENANCE............................................................................................................30

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GMD1208 User Guide
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Upgrading the GMD1208.....................................................................................................................30
Factory Reset the GMD1208 ...............................................................................................................31
EXPERIENCING THE GMD1208..................................................................................32

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GMD1208 User Guide
Version 1.0.1.31
Table of Tables
Table 1: GMD1208 Features in a Glance....................................................................................................12
Table 2: GMD1208 Technical Specifications...............................................................................................12
Table 3: Equipment Packaging ...................................................................................................................14
Table 4: Charging Status.............................................................................................................................17
Table 5: GMD1208 LED Indicator Descriptions ..........................................................................................27
Table 6: GMD1208 Functionality Trigger Conditions ..................................................................................29
Table of Figures
Figure 1: GMD1208 Package Content........................................................................................................14
Figure 2: GMD1208 front and back view ....................................................................................................15
Figure 3: GMD1208 connected to GVC3220 ..............................................................................................20
Figure 4: Wireless Microphone Disconnected ............................................................................................21
Figure 5: Wireless Microphone - Instructions..............................................................................................22
Figure 6: Wireless Microphone Connecting ................................................................................................22
Figure 7: GMD1208 Windows Drive ...........................................................................................................30
Figure 8: GMD1208 version.txt file .............................................................................................................30

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GMD1208 User Guide
Version 1.0.1.31
DOCUMENT PURPOSE
This document describes how to set up the GMD1208 and link it to a host device as well as understanding
the LED status indicators.
This guide covers following topics:
•Product Overview
•Getting Started
•Deployment Scenarios
•Connection Modes
•Connecting the GMD1208
•Using the GMD1208
•Understanding LED Indicators
•GMD1208 Functionalities
•Maintenance
•Experience the GMD1208

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GMD1208 User Guide
Version 1.0.1.31
CHANGE LOG
This section documents significant changes from previous versions of GMD1208 user manuals. Only major
new features or major document updates are listed here. Minor updates for corrections or editing are not
documented here.
Firmware Version 1.0.1.31
•This is the initial version.