Nicepower AN-3000CMO User manual

AN-3000CMO（GP300）
ANR INDUSTRIAL HEADSET
（FOR MOTOROLA GP300）

The Active Noise Reduction Industrial Headset is a headset that can isolate, offset and cancel
noises. In comparison with conventional headsets, it can, under noisy circumstances, provide a
quieter and more comfortable sensation, by reducing background noise. Therefore, making it
possible to improve the telecommunication quality and articulation, resulting in a higher
operation safety factor. The noise cancelling circuitry reduces outside noise considerably more
than a standard headset, making it more comfortable for users.
HEADSET OPERATION
1. Rotate the spring tension boom overhead to wear the microphone on either the right or left
side of the head.
2. Rotate the headset volume control (on the side of the headset opposite the microphone
boom) fully counter-clockwise to the minimum position. before the headset plug is inserted
into the aircraft or intercom
3. With the headband resting securely on the top of the head, check that the earseal are
centered over the ears.
4. For best noise cancellation, position the microphone 0-6 mm from your lips .
5. Insert the headset plug into the two way radios (MOTOROLA GP300) jack.
6. Insert the PTT plug into the battery module.
7. Volume Adjustment Procedure
Rotate the headset volume knob clockwise to a comfortable level.
BATTERY MODULE OPERATION

1．The battery module requires one 9 volt battery.
2．To avoid damage to the headset, ensure the power switch is set to OFF before changing
battery.
3．Slide down the lid on the battery compartment. Refer to positive (+) and negative (-)
symbols when replacing the battery.
4．To close the lid, push up until it clicks into place.
5．PTT input can be connected with“Push-to-Talk Switch”.
NOTICE：
1．When the battery power is low, the red LED indicator will flash. Note that the headset will
continue to operate as a normal headset under low battery power or no battery power,
however the active noise reduction will cease to operate after one hour .
2. When headset is not in use, ensure power switch is set to OFF, this avoids unnecessary
power consumption.
Cautions:
1: Proper Fit
Proper fit is critical to its noise attenuation effectiveness.
A: Push the headband down until it rests comfortably on the top of your head. Move
the earcups slightly up or down or from side to side until you feel Maximum
attenuation.
B: The use of eyeglasses will reduce the attenuation. Use thin temples on your glasses
to keep noise leakage at a minimum.
2: Use in Impulsive Noise Area
NRR is based on continuous noise, may not be an accurate indicator of the
impulsive noise such as gunfire.
For maximum protection, you can use ear plugs in addition to it.
3: Maintenance and Cleaning
In order for your headset working properly, always comply the following:
A: Never alter your headset.
B: If you see a defect such as splits in cups, seek immediate replacement.
4: Cleaning Instructions
A: Do not immerse in water.
B: Clean regularly with mild soap water. Sponge off headpad and earseals, Taking care
to rinse thoroughly.

HEADSET NOISE ATTENUATION DATA
The noise reduction or attenuation characteristics of communication headsets must be measured
according to an accepted standard procedure if the characteristics of different headset are to be
compared in a meaningful way.
The Noise Reduction Rating (NRR) is provided in accordance with U.S.EPA Regulation 40 CFR
Part 211.Subpart B. The Range of Noise Reduction Rating for Existing Hearing Protectors is
Approximately 0 to 30. (Higher Numbers Denote Greater Effectiveness)
Frequency[Hz] 125 250 500 1000 2000 3000 4000 6000 8000
Attenuation[dB] 14.3 21.5 27.1 31.8 36 39.5 41.3 39.7 37.0
Standard Deviation 3.3 2.4 1.5 1.6 1.3 2.1 2.1 2.0 1.3
Specifications
Noise Reduction Ratings（NRR）： 24dB
Headphone
Type: Dynamic （30）
Frequency Response: 50 Hz to 20 kHz
Sensitivity: 95±5 dB SPL (1 kHz, 1 mW input per earcup side)
full volume on ear simulator
Active Noise Attenuation:
Dynamic 42 ohms: Rate Input: 30mW Max. Iuput: 100mW
Speech Sound:
Dynamic 300 ohms, Rate Input: 30mW Max. Iuput: 100mW
Microphone and Amplifier:
Element Type: Noise-canceling Amplified Dynamic Microphone
Frequency Response: 150Hz to 8kHz
Operating Voltage (supplied by the two way radios ): 8-32 Volts DC
Matching Impedance: 150-1000 ohms
Sensitivity: -13±4 dB
(ref: 0dB SPL=20.0uPa at 1 kHz with 10 Vdc 150 ohms AC load)

PARTS LIST
General:
Temperature: Operating: - 25 to 70°C
Storage: -50 to 75°C
Cordage:
AN-3000CMO(GP300) Straight cord from headset to molded plug, 150CM
Intercom Connections:
Earphone Plug：(3.5phone plug)
Microphone Plug：(2.5phone plug)
Weights:
AN-3000CMO(GP300) -----600g
Noise Reduction Specifications:
Attenuation Frequency Band ……………………….20Hz~20KHz
Main Attenuation Frequency Band ……………….20Hz~600Hz
Attenuation Capability…………………………………..18~21dB
Power Consumption ……………….…… ……………...30mW
Headset size range
Height: 10 to 14 cm
Color:
Green/Black
Boom:
Spring tension boom

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EXPLODED VIEW AND DISASSEMBLY INSTRUCTIONS
PARTS LIST
MODEL
：
AN-3000CMO(GP300)
29
30

PARTS LIST
ITEM
P/N
DESCRIPTION
ITEM
P/N
DESCRIPTION
1
10ME0001
RETAINING RING
17
10EL0003
JUNCTION BOARD , PCB
2
10ME0002
DOME STOP , STAINLESS
STEEL
18
10KI0003
MIC BOOM ATTACHMENT
KIT
3
10PL0001
RIGHT EARCUP
19
10PL0004
GROMMET , RUBBER
4
10SP0007
ABSORBENT NOISE
FILTER (1)
20
10SP0011
ABSORBENT NOISE
FILTER (3)
5
10SP0008
ABSORBENT NOISE
FILTER (2)
21
10EL0007
NOISE CANCELING PCB
(LFET)
6
10EL0006
NOISE CANCELING PCB
(RIGHT)
22
10KI0004
SPRING TENSION BOOM
ASSEMBLY
7
10SP0009
FELT
23
10EL00014
AMPLIFIED DYNAMIC
MICROPHONE
8
10SP0010
GEL EARSEAL (PAIR)
24
10SP0014
MICROPHONE
WINDSCREEN
9
10EL0002
VOLUME CONTROL 1K
25
10CR0002
MICROPHONE PLUG
CORD
10
10CR0001
OVERHEAD CORD
26
10PL0005
STRAIN RELIEF
11
10ME0004
HEADBAND , STAINLESS
STEEL
27
10CR0004
COMM CORD ,
STRAIGHT
12
10SP0005
HEADBAND CUSHION
28
10KI0006
BATTERY MODULE
13
10KI0001
STIRRUP & CLAMP KIT
29
10CR0008
CORD FOR MOTOROLA
GP300
14
10PL0002
OVERHEAD CORD CLAMP
30
10KI0007
3.5PTT CORD
15
10PL0003
LEFT EARCUP
31
16
10KI0002
VOLUME KNOB KIT
32

1K ohm
+
-
-
+
+
-
MICROPHONE
GREEN
RIGHT
300ohm30
RED
WHITE
BLACK
AN-3000CMO(GP300) RIGHT
42ohm 30
Active Noise Reduction Pcb
Battery Module Pcb
LEFT
300ohm30
LEFT
42ohm 30
HEADSET SCHEMATIC DIAGRAM