Air Comm Systems ACS 2080-300 NVG Specification sheet

ACS 2080-300 NVG Kern County Fire Revision 1.3
Single Audio Mixer Panel
Operations and Installation
Manual
Air Comm Systems, Inc
37610 Sky Canyon Dr., Hangar 51
Murrieta, CA 92563
Ph: 951-677-0101 ~ Fx: 951-677-0701
[email protected] ~ www.AirCommSystems.com

Air Comm Systems, Inc. Page 2
nInstallation
Physical and Operating Specifications Page 3
Physical Dimensions Page 4
Interface Schematic Page 5
nOperation
Front Panel Controls Page 6-7
Front Panel Controls Pictorial Page 8
nInstruction for Continued Airworthiness
Instruction for Continued Airworthiness Page 9
nWarranty
Warranty Information Page 10
ACS 2080-300 Operations and Installation
Manual Table of Contents

Air Comm Systems, Inc. Page 3
nPhysical Specifications
nOperating Specifications
ACS 2080-300 Operations and Installation Manual
Physical and Operating Specifications
SIZE: 5.75 in. (14.61cm) W WEIGHT: 1.50 lb. (.68kg)
1.50 in.( 3.81 cm) H
5.03 in.(12.77cm) D MOUNTING: Dzus rail mount
CONTROLS: Panel mounted - transmit = rotary switch, audio inputs = potentiometer,
volume control = dual potentiometer
ILLUMINATION: Edge lit front panel per MIL-P-7738E, type 3. Capable of connection to
dimmer bus for adjustment. Amber transmit light indicates when unit is in
transmit mode.
INPUTS: 8 selectable receive audio inputs and 6 transmit selections.
DUTY CYCLE: Continuous POWER REQUIREMENTS: 28V DC +/- 10%
MAXIMUM OPERATING ALTITUDE: 16,500 ft.(5029 m)
OPERATING TEMPERATURE RANGE: -40 C to +85 C (operating)
-65 C to +125 C (storage)
CURRENT DRAIN: 70 mA at 28V (standby) - 500mA at 28V (max. signal)
AUDIO OUTPUT: Minimum 250 mW into 600 ohms
FREQUENCY RESPONSE: Within 6 db - 300-3000Hz
ICS INPUT IMPEDANCE: 600 ohms
RECEIVER INPUT IMPEDANCE: 600 ohms - matched to receiver
INPUT ISOLATION: Not less than 50 db between inputs
AUDIO MUTING: Not less than 40 db during transmit/ICS (optional)
MIC SENSITIVITY: 300 mV for rated output
DISTORTION: Less than 10% at 1000 Hz for maximum output

Air Comm Systems, Inc. Page 4
Physical Installation
The ACS 2080-300 is designed to be Dzus mounted and should be installed in the aircraft using the
DC37SL-F Installation kit that is included. The above outline drawing of the unit with dimensions will
facilitate the installation. The DC37SL-F Installation Kit consists of the following:
One (1) 37 pin AMP D-Subminiature female mating connector complete with crimp pins, hood, and
slidelock. The connector pin configuration of the ACS 2080-300 rear connector and the recommended wire
size for the aircraft cable harness is shown on the following page. Be sure that adequate clearance is
allowed for the rear connector and cable harness.
nPhysical Dimension Outline for mounting
ACS 2080-300 Operations and Installation Manual
Physical Dimensions

Air Comm Systems, Inc. Page 5
The ACS 2080-300 wiring harness should be constructed of Tefzel aircraft wire (M22759/16 grade). Power and
ground wires should be 18 or 20 AWG, and all other wires may be 22 AWG. Shielded wires should be used
where noted. Adequate protection against wear and chafing should be taken by using a braided cable sleeving
or jacket. Before completing installation, verify that all cable connector pins are seated properly and that the
connector is securely mounted to the unit mating connector.
Pre-fabricated cable harnesses are available from Air Comm to expedite installation — consult our sales
department for details.
nConnector Pin-out
ACS 2080-300 Operations and Installation Manual
Interface Schematic
37
14 OR 28VDC POWER IN
MICROPHONE HI
TRANSMIT KEY
ICS KEY
HEADPHONE AUDIO
SHIELD GROUND
INPUT 1 MIC HI
INPUT 1 KEY
INPUT 1 AUDIO
INPUT 2 MIC HI
INPUT 2 KEY
INPUT 2 AUDIO
INPUT 3 MIC HI
INPUT 3 KEY
INPUT 3 AUDIO
INPUT 4 MIC HI
INPUT 4 KEY
INPUT 4 AUDIO
INPUT 5 MIC HI
INPUT 5 KEY
INPUT 5 AUDIO
INPUT 6 MIC HI
INPUT 6 KEY
INPUT 6 AUDIO
INPUT 7 AUDIO ADF
INPUT 8 AUDIO MKR (NON-MUTED)
INPUT 9 AUDIO NON-SEL (NON-MUTED)
INPUT 7 MIC
INPUT 7 KEY
IN P U T 8 MIC
ICS OVERRIDE
ICS BUSS
PRIVATE/BUSS
HOT ICS KEY
MIXED AUDIO
LIGHT DIM
POWER GROUND
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ACS 2080
AUDIO PANEL

Air Comm Systems, Inc. Page 6
ACS 2080-300 Operations and Installation Manual
Front Panel Controls
( See Figure 1 — Page 8 for pictorial )
nDescription
The ACS 2080-300 Single Audio Mixer Panel is a compact, lightweight unit which provides full audio control
and ICS for a single position in the aircraft. It has the capability to provide its user with 8 independent receive
audio selections which have a front panel adjustable volume level, up to 6 transmitter selections, full
headphone audio and ICS volume control, and three ICS modes: PTT, PVT, and VOX.
n1- Norm - Emer Switch
This switch controls the operation of the audio panel in the event of an audio amplifier failure. In the “up”
position (NORM) the audio panel is in normal operating mode. In the “down” position (EMER) all audios are
summed and then fed directly to the headphones. This enables the use of the transmitters and other
equipment during audio amplifier failure.
n2 - QUICK ADJUST Adjustable Receive Audio Volume-On/Off Pots
Any receive audio can be selected and muted using innovative new QUICK ADJUST volume pots. A receive
audio is selected by pulling out the knob toward the operator. With the receive audio activated, the
headphone volume of the audio can then be adjusted to the desired level. Turning the knob in a clockwise
direction increases the volume level, and turning in the counter-clockwise direction decreases the volume
level. To mute the receive audio, the knob only needs to be pushed back in. The volume for that audio
remains set at the desired level and does not need to be reset the next time it is selected.
n3 - ICS Volume Control
This knob adjusts ICS headphone volume. Clockwise rotation increases the volume - counter clockwise
rotation decreases the volume.
n 4 - Lighting
The audio panel is lit by four (4) 28V NVG lamps which provide night time visibility for all panel legends.
In the event of a failure of lamps return to Air Comm Systems for replacement.

Air Comm Systems, Inc. Page 7
ACS 2080-300 Operations and Installation Manual
Front Panel Controls
( See Figure 1 — Page 8 for pictorial )
n5 - Mic Selector
This rotary switch performs three functions simultaneously. It (a) connects the mic to the selected transmitter
(b) selects the associated keyline, and (c) selects the associated audio (if not already selected using the
audio select-mute volume pot). This allows properly monitoring before transmitting.
n 6- Transmit Indicator
When the transmit key is activated this indicator lights up show that the audio panel is in the transmit mode.
n7 - ICS Switch
This switch selects the ICS mode. In the "up" position the audio panel is connected to the common ICS
buss. This enables the audio panel to communicate with any other audio panels also connected to the
common ICS buss. In the “center” position (OFF) the audio panel is disconnected from all other panels.
In the “down” position (PVT) the audio panel is connected to the common PVT ICS Buss. This enhances the
audio panel to communicate with audio panels also connected to the common PVT buss. An emergency
switch can be installed for pilot to connect all audio panels to override buss.
n8- VOX Control
The high-power VOX is controlled by this knob. In order to use the VOX feature, the ICS ON/OFF/PVT
toggle switch must either be in the “ON” or “PVT” position. If the toggle switch is in the “OFF” position, the
Audio Mixer Panel is isolated from the ICS buss, and no ICS communication is possible. Once the ICS
switch is in the “ON” or “PVT” position, the VOX can be activated by turning the knob clockwise past the
On/Off detent and threshold set to activate with voice.
The moment you begin talking the VOX circuitry activates and relays your voice transmission. When you
stop speaking the VOX circuit turns off to reduce unwanted background noise. Turning the knob clockwise
adjusts the threshold. If the knob is turned fully clockwise the VOX circuit will always be active and you will
hear background noise. If the knob is adjusted just past the On/Off detent then the VOX circuit cannot be
activated and you will revert to normal keyed ICS. Adjust the threshold level to match the ambient noise
conditions of the aircraft at the time for proper operation.
While in the VOX mode, if you wish to quickly isolate yourself from the ICS buss, you simply put the ICS
ON/OFF/PVT toggle switch in the “OFF” position.

Air Comm Systems, Inc. Page 8
nFigure 1 - Front Panel Controls
ACS 2080-300 Operations and Installation Manual
Front Panel Controls

Air Comm Systems, Inc. Page 9
ACS 2080 Operations and Installation Manual
Instruction for Continued Airworthiness
Instruction for continued airworthiness for Audio Mixer Panel Model ACS-2080 Series, Part Number
1004-700.
nGENERAL DESCRIPTION:
The Audio Mixer Panel consists of a Dzus mounting located in the cockpit or cabin area which provides
access to multiple radios for transmitting and receiving. It also provides intercom, both keyed and VOX
between other audio mixer panels or slave units located elsewhere in the aircraft.
nPURPOSE:
To provide instructions for the maintenance and inspection of the Air Comm Systems, Inc. Model
ACS-2080 Series Audio Mixer Panels.
This Manual provides instructions supplementing the aircraft maintenance manual. These instructions only
supersede the aircraft manual in the indicated areas.
nOPERATIONAL CHECK:
The Audio Mixer Panel should be checked prior to first flight each day per current operations manual.
nMAINTENANCE:
Check security and condition of Dzus mounted panel(s), check associated wiring harness at periodic
inspections such as annual/100 hour IAW FAR43 Appendix D(i).
nOn Condition.
Send Audio Mixer Panel(s) to qualified repair facility for any repairs. Contact Air Comm
Systems, Inc. Phone [phone] or FAX [phone] for nearest factory authorized
repair facility.

Air Comm Systems, Inc. Page 10
ACS 2080-300 Operations and Installation Manual
Warranty Information
nLimited Warranty Information
Air Comm Systems, Inc. warrants each new product to be free from defective
material and workmanship and agrees to remedy any defect or to furnish a new
part in exchange for any defective unit provided an examination discloses such
defect occurred under normal use and service, and provided the defective unit is
delivered to us, with transportation charges prepaid, within 1 year from the date
of acceptance of equipment by the owner. Each unit required and claimed
defective must be returned to:
Air Comm Systems, Inc.
37610 Sky Canyon Dr., Hangar 51
Murrieta, CA 92563
Ph: 951-677-0101
Fx: 951-677-0701
[email protected]
This warranty does not extend to any products which have been subjected to
misuse, neglect, accident, or in violation of instructions furnished, nor does it
extend to units which have been repaired or altered outside of our factory except
where such repairs are specifically authorized in writing by us.
This warranty is in lieu of all other warranties expressed or implied, and no
representative or person is authorized to assume for us any other liability in
connection with the sale of our products.