Comet GWD-915T, GWD-910T, GWD-910R, GWD-915R Owner's Manual

GWD900 Waterproof Wireless Microphone System

GWD-915T/910T & GWD-915R/910R

Owner’s Manual

Taiwan Gomet Technology Co., Ltd.
No. 8-1, Lane 212, Sec. 1, Chang-Shang N. Rd,
Tamsui, Taipei Shien 251, Taiwan
Tel: [phone]
Fax: [phone]
E-mail [e-mail]
Website www.gomet.com.tw

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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Wireless Microphone General Specification

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS
SUBJECT TO THE CONDITION THAT THIS DEVICE DOES NOT CAUSE HARMFUL
INTERFERENCE. ( FCC ID :QS6-GWD915T & QS6-GWD910R )

Modulation Mode: DSSS (Direct Sequence Spread Spectrum)
Frequency: 904 ~ 926MHz
Microphone RF Power Output 22 dBm (145mW) / GWD-910T
Receiver RF Power Output 22 dBm (145mW) / GWD-910R
Operating Range: 3000 ft.(900M) - Test with Leather Shoulder Pouch
Battery: 3.7V Rechargeable Li-Ion battery (Handset)
5V DC (Base Station)
Air Time: Max. 18 Hours* (Without Motion sensor & GPS)

Max. 11 Hours* (Motion sensor + GPS Continue Mode)
Max. 12 Hours* (Motion sensor + GPS Power Saving Mode)
* Test in 30 feet far from patrol car, according to radio quality
auto adjustment the RF power saving level

Standby Time: GWD910T: 12 days (Idle Mode) / 70 days (Suspend Mode),

GWD915T: 4.5 days (With GPS + Motion sensor) / 70 days

(Suspend Mode)
Microphone: Internal microphone and Lapel microphone
Channels: 8~12 Channels with Automatic Synchronization
APL(Auto Police Location): GNSS: GPS+GLONASS (GWD915T only)
Motion Sensor: Walking, Running, Lying, Attacked (GWD915T only)

• This GWD915/910 is protected against water splashes and dust - IP66.

• GWD915/910 Wireless Microphone will automatically turns ON and shut OFF when

recording is activated or deactivated through In-Car Video System.

• GWD915/910 Wireless Microphone is also able to trigger IN-CAR VIDEO SYSTEM to

activate digital video recording.

• Any GWD915/910 Wireless Microphone will work with any IN-CAR VIDEO SYSTEM

that is equipped with GWD910 receivers. - Automatic Synchronization

• Build-in Programmable Function Button, Panic Button & Mute Button

• LED indicators are used for status on mute, ON/OFF, signal, battery and panic

functions.

• GWD915/910 will automatically detect radio frequency noises, channel conflicts and

cross talks with as many as 10 - 12police in close proximity, and perform auto switch
to ensure clear communication and recording.

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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Hardware Overview

Wireless Microphone Wireless Microphone Receiver
GWD915T/910T GWD915R/910R

Charger, AC Wall Charger Cable

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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System Overview

Dual Channels Wireless Microphone Receiver

Receiver’s Register Contact (Right - CH1) and (Left - CH2)

The register contact is used to synchronize the frequency of the receiver and the
wireless microphone.

Green LED (Top Ch1, Bottom Ch2)

Green LED OFF for Microphone on Standby Mode
Green LED ON for Microphone on Recording Mode
Green LED Blinking for wireless Microphone audio Mute Mode

Red LED (Top Ch1, Bottom Ch2)

Red LED OFF for Panic Mode OFF
Red LED ON for Panic Mode ON
Red LED Blinking for Wireless Microphone Low Battery

Yellow LED (Top Ch1, Bottom Ch2)

Yellow LED OFF for Strong Signal

Yellow LED ON for Signal is Marginal or Weak

1

M

P

S

1.Mic Registe

r

Signal

week

Panic /
Batt Low

Mic On
/ Mute

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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System Overview

Wireless Microphone Receiver GWD915R/910R

Installation

No installation is required from the user. The
GWD915/910 wireless microphone receiver is
located in the computer, monitor module of the IN­CAR VIDEO SYSTEM or use the extension box
(RS-485/USB/DIO) mounting on the wall.

Power Connection

The wireless microphone receiver has no ON /
OFF switch. The receiver will become energized
in standby mode whenever the IN-CAR VIDEO
SYSTEM system is ON.

Receiver’s Antennas

To prevent damage, antenna for the receiver is
package separately. Remove the antenna from
the package and tighten the titanium antenna to
the receiver. Do not try to lengthen, shorten, or
temper with the antennas, which might result in
damage of the audio system and may violate FCC
regulation.

Receiver’s Register Contact

The register contact is used to synchronize the
frequency of the receiver and the wireless
microphone.

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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System Overview

Wireless Microphone GWD915T/910T

LED Indicators (Within the REC & Button 1 & 2)

REC Button

Green / Blue LED OFF for Standby Mode
Green / Blue LED ON for Recording Mode
Green / Blue LED Fast Blink for Mute Recording

Red LED Slow Blink for Low Battery

Red LED ON for Panic Mode ON
Red LED OFF for Panic Mode OFF

Programmable Button 1
Blue LED ON for Programmable 1 Function ON
Yellow LED OFF for Strong Signal
Yellow LED ON for Signal is Marginal or Weak

Programmable Button 2
Green LED ON for Programmable 2 Function ON

REC Button: Audio / Video Recording ON (Press REC Button once)

This action will initiate the IN-CAR VIDEO SYSTEM to record both
audio and video data. To stop recording, press the stop button on
the IN-CAR VIDEO SYSTEM monitor module.

Panic ON/OFF (Press and hold REC Button for 3 second)

Wireless microphone will automatically send a panic signal to the
IN-CAR VIDEO SYSTEM ; the signal will be relayed back to the
station for process. (This function is only available if the wireless
communication is established) The Panic Mode may be deactivated
by holding down the REC button for another 3 seconds. (Setting –
Panic function Enable)
Mute Audio ON/OFF (Press REC Button once during Recording)
(Setting – Mute function Enable)

Buzzer Produce Warning Tone

PB 1: Programmable Button 1 (Define by programmer for PD required)
PB 2: Programmable Button 2 (Define by programmer for PD required)

STOP Recording—Press and hold 3 second (Setting - PB2 Off Air Enable)

Microphone Audio Input.
Antenna External Antenna base for long distance used.
+ REC+PB1 Hold both Button 3 Seconds for Covert Mode ON/OFF:

Switching Warning Features between Vibration and (LED + Buzzer

+ Vibration)—(Setting – Covert Mode function Enable)

1

2

6

4

3 42 51 6

3

5

3 1

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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System Overview

Wireless Microphone GWD915T/910T

Battery Selection and Installation

The GWD915/910 wireless microphone is
powered by a rechargeable lithium-ion battery.
The wireless microphone housing is designed to
prevent incorrect installation of the battery. Do not
force the battery in to the housing. Reversed
batteries may cause damage to the wireless
microphone. The battery compartment is located
at the bottom of the wireless microphone. Slide off
the battery cover and remove the silicon seal, at
this point the battery is free to slide out.

Transmitting Antenna

The GWD915/910 Wireless Microphone includes a
flexible antenna, which is package separately to
prevent damage. Remove the antenna from the
package and tighten the antenna to the wireless
microphone. For best result, allow the antenna to
extent fully. If the signal is marginal, please
experiment with different wireless microphone
position on your body. Do not attempt to remove,
replace or change the length of the transmitting
antenna, which might result in damage of the
audio system and may violate FCC regulation

Wireless Microphone Contact

The wireless microphone contact is used to
synchronize the frequency of the wireless
microphone and the receiver. It is also the contact
for the battery charger.

Microphone special function note:

Special OOR Mode: Turn OFF Buzzer and Vibrate Alter to avoid the police become

shooting target when he chasing suspects and running out of
radio range (OOR) -- (Use Control command)

Suspend Enable: When microphone out of radio range or police off duty over 3

hours, Microphone goes into suspend to save Battery Power.

Suspend wake up: 1. Press microphone REC Button (Big) direct to On Air (Record).

2. To sync with Receiver or contact the charger again.
OAD (Over Air Download Program): Auto overwrites Mic. compatible firmware when

sync with incompatible Receiver. (All LED blinking around
60Sec then Beep 3 times to finish OAD process)

** During OAD can’t move out battery or to sync, but it can press REC Button**

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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System Overview

APL (Auto Police Location) Body GPS Wireless Microphone / GWD915T

 APL (Automatic Police Location) Function: The Body GPS Mic. can send police real

time location and body motion (walking, running, lying) from 2,000~3,000 feet to patrol
car and PD when police in emergency or chasing suspects.

 The PD can use dispatch or mapping system share the location coordinates and

body motion to other patrol car for quickly support and rescue.

 When police walking out of patrol hit or attacked by car or suspect, also police

suddenly running to chase suspect, the Body GPS microphone can auto trigger
recording and send back location to PD for quickly support and rescue.

GPS Location Data Output Rule and Power Mode:

1. When Police moving over

10M (30 feet) - output one coordinate.

2. Moving in

10M (30 feet) - Every 1 minute output one coordinate.
Continue Power Mode: Continue tracking satellites after 3D fixed (High Accuracy)
Saving Power Mode: Every time GPS 3D fixed, the GPS go to sleep for 10 seconds

then wake up for satellites acquisition until the GPS 3D fixed again.

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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Operating Procedure

The GWD915/910 is designed to eliminate unnecessary hassle of pairing a receiver with a
particular wireless microphone. With the latest technologies, the GWD915/910 is able to
synchronize the frequency of any GWD915T/910T Wireless Microphone with any
GWD915R/910R Receiver.

Just follow these few simple instructions to ensure maximum performance:

1. Check out any GWD910T Wireless Microphone and make sure it is fully charged
before operation.

2. Please be sure the IN-CAR VID EO S YSTEM is ON before proceeds any further.

3. Slide the wireless microphone
contact directly on top of the
receiver’s register contact (located on

the top of the IN-CAR VIDEO
SYSTEM monitor module) until a

confirmation tone has sound. This
indicates the receiver’s register
contact has synchronized the
frequency of the receiver and the
wireless microphone. Wireless
microphone is now on standby mode
and is ready for use.

4. Please only synchronize one wireless microphone to one receiver.

5. There are three methods to activate recording on the wireless microphone:

a. Press the ON or Panic Button once on the wireless microphone for

recording.

b. Activate video recording at the IN-CAR VIDEO SYSTEM. This action

will automatically trigger wireless microphone recording.

c. Turn on the light bar or siren in the patrol car. This action will also

automatically trigger wireless microphone and video recording.

6. To prevent accidental audio shut off. The only way to return wireless

microphone to standby mode from recording mode is to stop the video recording
from the IN-CAR VIDEO SYSTEM. Or press and hold PB2 until 3Seconds.

7. During recording mode, if the warning sounds and the yellow LED flash, this
means the signal is marginal or weak. At this time, please step closer to the
receiver or reposition the wireless microphone until the warning stops. However,
if the warning persists and exceeds 30 seconds, the wireless microphone will
automatically shut off and return to standby mode. If user returns within the
signal range again while the video is still recording, the receiver will re-initiate the
wireless microphone automatically.

8. For charging, simply place the wireless microphone to the charger and leave it
charging for at lease 6 (six) to maximize battery capacity.

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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Federal Communications Commission (FCC) Statement

You are cautioned that changes or modifications not expressly
approved by the part responsible for compliance could void the
user’s authority to operate the equipment.

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.
You are cautioned that changes or modifications not expressly

approved by the party responsible for compliance could void your
authority to operate the equipment. .

FCC RF Radiation Exposure Statement:

To comply with the FCC RF exposure compliance requirements, this device and its
antenna must not be co-located or operating in conjunction with any other antenna or
transmitter.

For next to mouth operation, this device has been tested and meets FCC RF exposure
guidelines when used with an accessory that contains no metal and that positions the
device a minimum of 10 mm from the face. Use of other accessories may not ensure
compliance with FCC RF exposure guidelines

For limb-worn operation, this device has been tested and meets FCC RF exposure
guidelines when used with an accessory that contains no metal and that positions the
device a minimum of 0 mm from the body. Use of other accessories may not ensure
compliance with FCC RF exposure guidelines

GWD 910 / 915

Wireless Microphone System Owner’s Manual

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http://www.gomet.com.tw

© Copyright 1993 Taiwan Gomet Technology Co., Ltd.