David Clark DC PRO-X2 Aviation Headset

Thank You

Thank you for purchasing the DC PRO-X2 headset. Congratulations on acquiring one of the most technologically advanced electronic noise-cancelling headsets available. Like all David Clark products, the DC PRO-X2 Series Electronic Noise Cancelling Headsets are supported by exceptional customer service and support.

David Clark Company takes full responsibility for the quality and performance of its products. The company is committed to a service policy that ensures prompt and positive responses to any questions or issues regarding its products. David Clark Company products have established performance and excellence standards for pilots worldwide, and the new DC PRO-X2 continues this legacy. The company's reputation for excellence is maintained through continuous dedication to earning customer confidence.

Richard M. Urella, President

Hybrid ENC Technology

The DC PRO-X2 headset features leading-edge Hybrid Electronic Noise-Cancelling Technology (ENC) utilizing both feed-forward and feed-back technologies for superior active noise reduction. Feed-forward noise cancelling is achieved via an exterior microphone in the ear dome, isolated from the speaker, which captures ambient noise before it reaches the ear. Feed-back noise cancelling is performed by an internal microphone placed near the speaker. These signals are inverted to produce a reverse, 'anti-noise' signal, resulting in unsurpassed active noise reduction performance.

Diagram Description: A block diagram illustrates the cancellation process. A "Cancellation Processor" receives "External Noise Signal" and "Internal Noise Signal". It contains an "Amplifier", "Bluetooth & Audio DSP", and an "Inversion Circuit". The "Amplifier" outputs an "Anti-Noise Signal" to the "Internal Speaker". An "External Microphone" captures ambient noise, and an "Internal Microphone" captures sound near the speaker, both feeding into the processor. The processor uses these inputs to generate the "Anti-Noise Signal".

Headset Features

The DC PRO-X2 headset is approved under FAA TSO-C139a and is patent pending.

Technologically Advanced. Intelligently Designed.

• 1. Ultra lightweight, yet rugged alloy headband and suspension for durability.
• 2. Fully adjustable suspension assembly for personalized comfort.
• 3. Outlast® technology heat-absorbing head pad with a breathable, vented design.
• 4. Swivel hinge stirrups disperse clamping pressure for a secure, comfortable fit.
• 5. Plush, 'rest on ear', Dura-Stitched leatherette ear seals reduce heat build-up and enhance comfort.
• 6. Hybrid ENC technology for best-in-class active noise attenuation.
• 7. Digital Signal Processing (DSP) Technology provides high-fidelity audio for superior communications and music listening.
• 8. M-5B Electret Microphone with enhanced noise cancelling capabilities.
• 9. Full flex boom for precise microphone placement.
• 10. Bluetooth® wireless technology (on selected models) for seamless integration with cell phones, MP3 players, tablets, and other personal electronic devices.
• 11. Collapsible design for compact storage in the provided David Clark headset bag.

Headset Component Description: The headset features a headband (1), suspension assembly (2), head pad (3), swivel hinge stirrups (4), ear seals (5) on the ear domes (6), a microphone boom (7), a control module (8), and an M-5B microphone (9). A Bluetooth® indicator (10) is present, and the headset is designed for collapsible storage in a bag (11).

DC PRO-X2 Models

Control Module

The Control Module is powered by two (2) 'AA' batteries, providing up to 50 hours of continuous use.

Control Module Layout: The control module features a Power On/Off button, Volume Controls (Left/Right), a Bluetooth button, a Mono/Stereo Switch, and an Auto Shutoff Switch.

Control Module Features

Power

• Turn On/Off: Press and hold for 2 seconds.
• LED Indicators: Solid Yellow (Initializing), Flashing Green (On), Flashing Red (On, Low Batteries).

Power (LED 'Dark' Mode)

To enable 'Dark' mode (no flashing Power LED): First, press and hold the Bluetooth® button, then press and hold the Power button. Release the Power button, then continue holding the Bluetooth® button until the yellow Power ON LED turns OFF. Release the Bluetooth® button. The 'Low Batteries' red flashing LED will still function.

Volume Up/Down

Adjust listen level volume up or down. Left/right adjustments are independent. Volume is only adjustable when power is ON; levels default to maximum when the unit is OFF.

Mono/Stereo

Set according to the type of intercom/audio panel (factory default is "Mono").

Enhanced Auto Shutoff

The factory default Auto Shutoff position is "OFF". This feature can be enabled/disabled via a small switch located under the batteries.

Bluetooth® Wireless Technology

Press and hold for 2 seconds to turn on Bluetooth® Wireless Technology.

• LED Indicators: Flashing Purple (Initializing/Mute Disabled), Flashing Green (On, Not Connected), Flashing Yellow (Pairing Mode), Flashing Blue (Paired and Connected/Mute Enabled).
• To Pair: Turn Bluetooth® Wireless Technology on (flashing green). Press the Bluetooth® Wireless Technology button to enter pairing mode (flashing yellow). Search for devices from your phone/device, select DC PRO-X2, and initiate pairing. If prompted for a PIN code, enter 0000.

Note: Bluetooth® wireless technology is not available on Model Part Numbers 43105G-07 and 43105G-10.

Control Module Operation

1. Fail Safe: If batteries are dead or the unit is turned off, the microphone and earphones will still function when connected to the aircraft intercom.
2. Enhanced Auto Shutoff:

   DC PRO-X2 Series headsets are shipped with the Enhanced Auto Shutoff feature set to the 'OFF' position. This feature can be enabled/disabled via a small switch located under the batteries.

   When Enhanced Auto Shutoff is set to 'OFF' (factory default), ANR headset power is manually controlled using the Power Button. When Enhanced Auto Shutoff is set to 'ON', the headset functions as follows upon power-on:

   • A. Headset Connected to Aircraft Audio Panel: The headset will automatically turn off after 5 minutes under these conditions:
     • Aircraft audio panel is turned off.
     • Headset is disconnected from the aircraft panel.
     • An active cell phone conversation is concluded.
   • B. Headset Not Connected to Aircraft Audio Panel: Headset power is controlled by the Power Button, allowing continuous use for cell phone conversations or streaming audio.
3. Cell Phone Interface:
   • Using the Bluetooth® wireless technology cell phone feature while plugged into the aircraft intercom is not recommended and may violate applicable regulations.
   • All intercom parties hear cell phone outbound audio, but the cell phone recipient's voice is heard only by the headset connected/paired to the cell phone.
   • Sidetone is always present.
   • Briefly pressing the Bluetooth® wireless technology button will answer or terminate a call (if supported by the cell phone).
   • Cell phone receive audio is not muted when receiving a transmission from ATC or intercom.
4. Music Listening:

   The Bluetooth® wireless technology feature allows listening to music when paired with cell phones, MP3 players, tablets, or other compatible devices. Briefly pressing the Bluetooth® button while listening to music will enable/disable muting:

   • Flashing blue (default): When receiving a transmission from ATC or intercom, music mutes to prioritize communication. Music audio gradually returns to the previous volume level once the transmission is completed. A falling two-tone chime is heard when entering this mode.
   • Flashing purple: Music does not mute when a transmission is received from ATC or intercom. A rising two-tone chime is heard when entering this mode.

   Each time the DC PRO-X2 is powered 'ON', this setting reverts to the default (muting) mode.

Aircraft-Powered Models

DC PRO-X2 (Aircraft Powered/6-Pin)

The DC PRO-X2 Aircraft Powered Model (P/N 43105G-02) features a 6-pin Redel® connector, compatible with aircraft equipped with a 6-pin receptacle on the aircraft panel.

DC PRO-X2 (Aircraft Powered/5-Pin XLR)

The DC PRO-X2 Aircraft-Powered Models (P/N 43105G-04, P/N 43105G-07) receive power directly from the aircraft via pin 5 of the XLR connector. Note: Not all aircraft with XLR-5 connectors provide power at pin 5. Batteries are required only when no power is available at pin 5 or when the headset is disconnected from the aircraft panel.

Proper Fitting

The advanced suspension system of the DC PRO-X2 Series is designed for a simple and comfortable fit, crucial for maximum effectiveness. The headset should be worn so the head pad lightly touches the top of the head. Adjust the sliding assembly on each side as necessary (see Fig. 1), ensuring slide positions are equal on both sides, until the center of the earphone aperture within the ear seal aligns directly with the ear canal.

The ultra-soft memory foam of the ear seal conforms to the ear's contours, providing an adequate seal. In noisy environments, turn on the ANR circuitry and adjust the headset and ear seal position for the lowest perceived noise, optimizing the performance of the Hybrid ENC technology for communications and music listening.

To adjust microphone placement, move the boom up/down and in/out by rotating and flexing it as needed. Ideal microphone placement is approximately 1/8" from the lips for maximum intelligibility and ambient noise rejection.

Fig. 1 shows a close-up of the sliding assembly adjustment mechanism.

Accessories

Replaceable Parts Removal/Installation

M-5B Microphone (P/N 09168P-85)

• To remove: Gently pull off the foam cover. Grasp the microphone firmly and pull straight out.
• To install: Align the keyway on the microphone with the keyway on the boom. Ensure "TALK" faces inward towards the user's face. Push until the microphone snaps into place.

Microphone Foam Cover (P/N 40062G-02)

• Slide the foam cover over the top of the microphone and secure with the included O-ring.

Leatherette Ear Seals, Pair (P/N 15976P-03)

• To remove: Gently pull off.
• To install: Stretch the earseal over the lip of the dome until completely seated on the dome.

Outlast® Technology Head Pad (P/N 15977P-04)

• To remove: Gently pull off.
• To install: Align the head pad with the headband assembly and push all around the perimeter to engage the hook-and-loop fasteners.

Control Module Mounting Clip (P/N 41068G-03)

• Place the Control Module into the mounting clip and snap it into place.
• Use the clip to attach the Control Module to apparel or any convenient location within the aircraft.

Customer Service and Support

David Clark Company aviation headsets are covered by a 5-year warranty. Efforts are made to prevent problems and the need for repairs. In the unlikely event of a problem, David Clark Company qualified representatives are available to answer questions and provide customer service. Many repairs are covered under warranty.

Contact Customer Service:

• Tel. 800-298-6235
• Tel. 508-751-5800 (outside the USA)

Visit the website at www.davidclark.com.

Compliance

FCC Compliance Statement

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.

Changes and modifications not expressly approved by David Clark Company, Inc. can void the user's authority to operate this equipment under FCC rules.

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. If not installed and used in accordance with instructions, it may cause harmful interference to radio communications. No guarantee is made that interference will not occur in a particular installation. If interference occurs, users are encouraged to correct it 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.

This device complies with Industry 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.

Important Safety Information

• Ensure portable devices do not interfere with aircraft navigation and communication systems. Refer to FAA AC 91.21-1D or later revisions for installation approval.
• It is the pilot's responsibility to ensure that portable devices do not interfere with aircraft systems and to determine suitability for use with the headset.
• Do NOT attempt to repair this headset. Contact David Clark Company for specific care, return, and shipping instructions (see page 12 for contact information).

FAA Technical Standard Order

The David Clark Company DC PRO-X2 family of headsets, PN 43105G-(), are approved to TSO and ETSO C139a. This family of headsets is designed to perform and withstand environmental conditions summarized on page 13. This article meets the minimum performance and quality control standards required by the technical standard order (TSO). Installation requires separate approval; reference FAA AC 91.21-1D or later version for guidance. This article may include the non-TSO function of Bluetooth®, which does not affect TSO-C139a compliance.

TSO approval conditions and tests are minimum performance standards. Installers must ensure aircraft installation conditions are within TSO standards, including any accepted integrated non-TSO functions. TSO articles and integrated non-TSO functions require separate approval for aircraft installation, following 14 CFR Part 43 or applicable airworthiness requirements.

French version of RSS-Gen, Sec. 7.1.3

Le présent appareil est conforme aux CNR d'Industrie 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.

Certifications: FAA TSO-C139a Approved, Patent Pending. ©2019 David Clark Company Incorporated. Green headset domes are a David Clark Company Trademark. An Employee Owned American Company. 19604P-70 (6/19).

DC PRO-X2 SERIES - Environmental Test Summary