Belkin F1DN002A User manual

Advanced Secure Headset Adapter
User Manual
F1DN002A – Belkin Secure Headset Adapter
Document Number 8820-01352 Rev. A02

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Belkin®Advanced Secure Headset Adapter User Manual
TABLE OF CONTENTS
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Introduction .............................................. 1
Package Contents.........................................1
Safety Precautions ........................................2
Overview ................................................. 3
Security Features .........................................3
Operational Features ......................................4
Equipment Requirements ...................................5
Unit Display Diagrams .....................................7
Specifications ...........................................10
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Before Installation ........................................11
Connection and Installation ................................12
Operation ...............................................13
Operating the Belkin Advanced Secure
Headset Adapter .........................................13
Troubleshooting .........................................16
Information..............................................17
Reporting Belkin Product Security Vulnerability..............20

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Thank you for purchasing this Belkin Advanced Secure Headset Adapter.
This User Manual provides all the details you’ll need to install and
operate your new product, and also to troubleshoot it in the unlikely
event of a problem.
What is a Secure Headset Adapter?
The Belkin Advanced Secure Headset Adapter is used to securely
connect analog audio devices such as microphones or headsets to
classified computers. The Belkin Advanced Secure Headset Adapter
is the perfect security solution in cases where the classification of the
computer is lower than the classification of the call made. The Belkin
Advanced Secure Headset Adapter protects audio input devices such
as microphones and headsets with the help of a physical microphone
mute push button that disables the microphone if pushed.
Package Contents
r Belkin Advanced Secure Headset Adapter
r 5V 1A DC Power Supply
r 3.5mm Male (x2) to 3.5mm Male (x1) Audio Cable (6ft)
r 3.5mm Male (x2) to 3.5mm Female (x1) Audio Cable (6ft)
r Cisco Adapter to 3.5mm (x2) Audio Cable (6ft)
r 3.5mm Male (x2) to 3.5mm Male (x2) Audio Cable (6ft)
r User Manual
Important Security Note:
If you are aware of potential security vulnerability while installing or
operating this product, we encourage you to contact us immediately
at the following email address:
[e-mail]
Important:
This product is equipped with an always-on active anti-tamper
system. Any attempt to open the enclosure may activate the anti-
tamper system and render the unit permanently inoperable. If
the unit’s enclosure appears disrupted or if all the port LEDs
flash continuously, please call Belkin Technical Support at
1 [phone].

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Safety Precautions
Please read the following safety precautions carefully before using the
Belkin Secure Headset Adapter:
r Before cleaning, disconnect the product from DC.
r Be sure not to expose the product to excessive humidity.
r Be sure to install the product on a clean secure surface.
r Do not place the DC/AC power cord in a path of foot traffic.
r If the product is not used for a long period of time, remove the
product’s wall-mount power supply from the main jack.
r The product should be stored and used only in temperature and
humidity-controlled environments as defined in the product’s
environmental specifications.
r The wall-mount power supply used with this product should be
the model supplied by the manufacturer or an approved equivalent
provided by Belkin or an authorized service provider. The use of
an improper power source will void product warranty.
r If one of the following situations occurs, get the product checked
by a qualified service technician:
– The product’s power supply overheats, is damaged or broken,
causes smoke, or shortens the main power socket.
– Liquid penetrates the product’s case.
– The product is exposed to excessive moisture or water.
– The product is not working properly even after carefully
following the instructions in this user’s manual.
– The product has been dropped or is physically damaged.
– The product has obvious signs of breakage or loose internal
parts.

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OVERVIEW
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Security Features
The Belkin Advanced Secure Headset Adapter is a unique and secure
product used to protect audio devices. Below is a summary of some key
security features incorporated into this product:
Analog Audio Data Diode
Preventing audio stream from headphones flowing back to the computer’s
audio jack. The only effective means to protect from remote eavesdropping
through connected headphones configured as a microphone.
Timer Function
The Belkin Advanced Secure Headset Adapter is equipped with a timer
function with a clear indicator LED to warn the user that the microphone
or headset is active.
Independent Microcontroller
Attacks from connected computers are prevented by the Belkin Advanced
Secure Headset Adapter’s isolated microcontroller. The product cannot
be tampered with or be controlled by a connected computer.
Secure Mute Function
The audio device can be securely muted through microphone electrical
isolation and input shorting.
Microphone Enable Push-Button
Microphone enable push-button with an internal 60-second timer
preventing the option that an open microphone can be abused for
environment eavesdropping.
Active Always-On Anti-Tampering
Active always-on chassis anti-tampering system prevents the Belkin
Secure Headset Adapter electronic circuitry from being accessed and
tampered with by permanently disabling the product once tampering is
detected. (Both microphone and headset are grounded.)
Tamper-Evident Label
A holographic security tamper-evident label is placed on the enclosure
to provide a visual indication if the Adapter has been opened or
compromised.
Please note: Belkin Secure products cannot be upgraded, serviced
or fixed.
Secure Packaging
“Tear away” packaging ensures secure delivery of the product as it is
routed to the end user. The recyclable packaging also breaks down flat,
simplifying the cleanup process.
Non-Reprogrammable Firmware
All firmware resides on ROM. The product features custom firmware
that is not reprogrammable, preventing the ability to remotely attack
the Headset Adapter.

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Operational Features
The Belkin Advanced Secure Headset Adapter was designed with the
user in mind for today’s IT environment. Below is a summary of some
key operational features incorporated into the product.
Crystal-Clear Audio Quality
The Belkin Advanced Secure Headset Adapter is equipped with active
diode circuitry to assure that audio is passed in the right direction and
is not distorted or attenuated. Security features do not affect audio
quality.
Increased Reliability
Using a new, advanced anti-tampering battery with an extremely
low self-discharge rate, the life expectancy of the product has been
increased dramatically to over 25 years.
No USB Interface
The Belkin Advanced Secure Headset Adapter has no USB interface,
preventing the need to change existing audio equipment and preventing
the use of unsecure USB audio.
Easy Integration
The Belkin Advanced Secure Headset Adapter supports a wide range
of Belkin Secure switching products including KVM and KM switches.
Clear Indication
The Belkin Advanced Secure Headset Adapter has the ability to extend
the time interval of the microphone while the audio quality is not affected
at all. The Belkin Advanced Secure Headset Adapter provides the user
with a clear audio indication when the time interval is close to finishing.

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Equipment Requirements
User Operating-System (OS) Support
The Belkin Advanced Secure Headset Adapter is compatible with
computers running on the following OS platforms:
r Windows®2000
r Windows XP (Home/Professional)
r Windows 2003 Server
r Windows 7
r Windows 8
r Unix®
r Linux®
r MacOS®
User Audio Devices
The Belkin Advanced Secure Headset Adapter is compatible with the
following types of user audio devices:
r Stereo headsets
r Amplified stereo speakers
r Microphones
r Cisco IP phones
r Mobile Devices (phones, tablets)
r PCs with 3.5mm audio jacks

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Required Cables for Advanced Secure Headset Adapter Setup
Included - F1D9033-06
Connected Devices Not Included
Or
Included - F2CV020-06
Included - F1D9031-06
Included - F1D9016b-06

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F1DN002A Front Panel Features
3
2
1
1Microphone Disable Push-Button + Red LED
2Microphone Enable/Extend Push-Button + Green LED
3Tamper-Evident Label

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F1DN002A Back Panel Features
52
3 4
61
1Audio Cable Jack (to PC) 4Admin LED (bi-color green/red)
2Microphone Cable Jack (to PC) 5Microphone Jack
3Power Supply DC Jack 6Audio Jack

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Tamper-Evident Label
The Belkin Advanced Secure Headset Adapter uses a holographic
tamper-evident label to provide visual indications in case of an
enclosure intrusion attempt. These labels indicate white dots or the text
“VOID” once removed. When opening product packaging inspect the
four tamper-evident labels.
IMPORTANT NOTICE:
If for any reason the tamper-evident label is missing, appears disrupted,
or looks different than the example shown here, please call Belkin
Technical Support at [phone].
Belkin Holographic Tamper-Evident Label
Active Anti-Tampering System
The Belkin Advanced Secure Headset Adapter is equipped with an
always-on active anti-tampering system. If mechanical intrusion is
detected by this system, the product will be permanently disabled and
all LEDs will flash continuously.
If the product indicates a tampered state (all LEDs flashing
continuously), please call Belkin Technical Support and avoid
using the product.

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Specifications
Part No. F1DN002A
Enclosure Impact-resistant ABS plastic
Power Requirements 5V DC, 0.3A (maximum)
AC Input Voltage 90 to 240VAC
No. of Users Supported 1
PC Interface One 3.5mm stereo plug for headphones or
line output
One 3.5mm stereo plug for microphone input
User Interfaces Activate illuminated push-button
Extend push-button
Self-test and tampering bi-color LED
Electrical Interfaces One 3.5mm stereo jack for headphones or
amplified speakers output.
One 3.5mm stereo jack for microphone input.
Headphone output supports 4- to 64-Ohm
headsets. Can drive 0.25W per channel into
8-Ohm load.
Computer Audio Input Jack 3.5mm female
Operating Temp 32° to 104° F (0° to 40° C)
Storage Temp -4° to 140° F (-20° to 60° C)
Humidity 0-80% RH, non-condensing
Warranty 3 years
Dimensions 55 (W) x 96 (D) x 21 (H) mm
2.15 (W) x 3.77 (D) x 0.83 (H) inches
Weight 0.1 kg. (0.2 lbs.)
Audio Characteristics Excellent flat audio response curve
Frequency response: 100-20, 000Hz
Diode reverse-flow attenuation 32 +- 4dB
S/N ratio: More than 52dB
Audio Cards Supported All AC’97 CODECS on-board or cards
HD Audio Codecs
Professional PCI cards and multi-channel
sound cards are not supported.

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Before Installation
Before opening the Belkin Advanced Secure Headset Adapter
packaging, inspect the packaging seal condition to assure that product
was not accessed or tampered with during delivery. If the packaging
seal looks suspicious, contact Belkin Technical Support and do not use
the product.
After removing the packaging seal, please inspect packaging contents
to verify that required components are included as listed in the Package
Contents section of this manual.
After the Belkin Advanced Secure Headset Adapter is removed from its
packaging materials, inspect the tampering-evident label to assure that
product is properly sealed. If the label is damaged or missing, contact
Belkin Tech Support and do not use that product.
Consider the following when deciding where to place the Switch:
r The location of your computers in relation to your device.
r The length of the cables used to connect the computer to the
device.
Warning:
Avoid placing cables near fluorescent lights, air-conditioning equipment,
or machines that create electrical noise (e.g., vacuum cleaners).

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Connection and Installation
1. Connect the audio cable pink plug to the Belkin Advanced Secure
Headset Adapter’s input microphone jack (pink color jack) and the
other end of the audio cable to the computer pink microphone jack.
2. Connect the audio cable green plug to the Belkin Advanced Secure
Headset Adapter’s input headphone jack (green color jack) and the
other end of the audio cable to the computer green headphone jack.
3. Connect the microphone device to the Belkin Advanced Secure
Headset Adapter’s output headphone pink jack.
4. Connect the headphone or speaker device to the Belkin Advanced
Secure Headset Adapter’s output headphone green jack.
5. Connect the wall-mounted power supply DC plug to the Belkin
Advanced Secure Headset Adapter's DC Jack.
6. Connect the wall-mounted power supply to the mains outlet.
7. Place the Belkin Advanced Secure Headset Adapter on the user
desktop and secure the cables in place.
Wall-Mounted
Power Supply
Headset
Audio
Cables Desktop
Microphone
PC / Laptop
Audio Audio
Computer Headset
Mic 5V, 1A Mic

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Operating the Belkin Advanced Secure
Headset Adapter
1. Check that the front-panel red LED is illuminated (microphone
is disabled) and that the admin LED on the rear end panel is
illuminated in green to indicate that the Belkin Advanced Secure
Headset Adapter is ready to use.
2. Try to play music or any audio from your computer to make sure
that it can be heard through connected headphones or speakers.
Note: Audio is unidirectional and is always heard through the
speakers/headset.
3. Open a software application that provides an indication of the
microphone signal level, e.g. Skype. Make sure that the microphone
input level is zero even when you talk into the microphone.
4. Press the microphone enable push-button, make sure the green
front-panel LED is illuminated and that the microphone audio signal
level is OK.
5. The microphone channel will be open for a period of 60 seconds.
6. The micr ophone can be c losed/disabled by pressing the
microphone disable push-button.
7. To extend the time interval by another 60 seconds, press the
microphone enable push-button again at any time when the
microphone is enabled.
8. The Belkin Advanced Secure Headset Adapter’s front-panel green
LED will start blinking slowly and the audio output device will start
generating audio beeps during the last 15 seconds of the time
interval.
9. During the last 5 seconds of the time interval, the front-panel green
LED will blink faster.
10. At the end of the time interval, the microphone will be disabled and
the front-panel red LED will illuminate.

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Beep Volume Control
Press the microphone disable push-button continuously for 5 seconds
to enter “Volume mode.” The volume can be increased by pressing the
microphone disable push-button. By pressing the microphone enable
push-button the volume will be decreased. When the lowest or the
highest volume levels are reached, 2 beeps will be heard.
Please note:
r A microphone device is not mandatory when operating the Belkin
Advanced Secure Headset Adapter. The product can be operated
with just headphones or speakers connected.
r When operating the Belkin Advanced Secure Headset Adapter,
make sure that device and audio cable connections are not
crossed.
r If power is not available, LEDs will not illuminate and no audio will
be heard.
r If both front-panel LEDs are not illuminated and the Admin LED on
the rear panel is illuminated red, the unit has failed. In such a case,
release the push-button and repower the device.
r If one of the push-buttons is pressed while the unit is powering
up, the unit will fail the self-test. In such a case, release the push-
button and repower the device.
To exit Beep Volume Control Setting:
1. Press and hold the Mute button for five seconds continuously.
2. Power cycle the unit by disconnecting and reconnecting the
power supply.

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Belkin Advanced Secure Headset Adapter LED Indications Table
Product State Red LEDs Green LEDs Audio Indication Bi-Color Admin LED
Idle – Powered on after self-test passed On Off None Green
Self-test failed Off Off None Red
Product tampered Blinking fast alt Blinking fast alt None Blinking red
First 75% of the time interval Off On None Green
Last 25% of the time interval Off Blinking slow Slow beep both channels Green
Last 5% of the time interval Off Blinking fast Slow beep both channels Green

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No LEDs
Check that the wall-mounted power supply DC plug is connected to the
Belkin Advanced Secure Headset Adapter’s DC jack and that the wall-
mounted power supply is connected to the main’s outlet.
No Audio
If audio is heard but no beeps are heard:
r Check the volume level of the Belkin Secure Headset Adapter
The volume can be increased by pressing the microphone disable push-
button. By pressing the microphone enable push-button, the volume
will be decreased. When the lowest or the highest volume levels are
reached, 2 beeps will be heard.
If no audio is heard at all:
r Check that cables are not crossed
r Check that the computer is not muted
r Check that the speakers or headset are working properly

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FCC Statement
DECLAR ATION OF CONFORMITY WITH FCC RULES FOR
ELECTROMAGNETIC COMPATIBILITY
We, Belkin International, Inc., of 12045 E. Waterfront Drive, Playa Vista,
CA 90094, declare under our sole responsibility that the products:
F1DN002A, to which this declaration relates:
Comply 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.
CE Declaration of Conformity
We, Belkin International, Inc., declare under our sole responsibility that
the F1DN002A, to which this declaration relates, are in conformity with
Emissions Standard EN55022 and with Immunity Standard EN55024,
LVP EN61000-3-2, and EN61000-3-3.
ICES
This Class B digital apparatus complies with Canadian ICES-003. Cet
appareil numérique de la classe B est conforme á la norme NMB-003
du Canada.
Belkin International, Inc., Limited 3-Year Product Warranty
What this warranty covers.
Belkin International, Inc. (“Belkin”) warrants to the original purchaser of
this Belkin product that the product shall be free of defects in design,
assembly, material, or workmanship.
What the period of coverage is.
Belkin warrants the Belkin product for three years.
What will we do to correct problems?
Product Warranty.
Belkin will repair or replace, at its option, any defective product free of
charge (except for shipping charges for the product). Belkin reserves
the right to discontinue any of its products without notice, and disclaims
any limited warranty to repair or replace any such discontinued
products. In the event that Belkin is unable to repair or replace the
product (for example, because it has been discontinued), Belkin will
offer either a refund or a credit toward the purchase of another product
from Belkin.com in an amount equal to the purchase price of the
product as evidenced on the original purchase receipt as discounted
by its natural use.

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What is not covered by this warranty?
All above warranties are null and void if the Belkin product is not
provided to Belkin for inspection upon Belkin’s request at the sole
expense of the purchaser, or if Belkin determines that the Belkin
product has been improperly installed, altered in any way, or tampered
with. The Belkin Product Warranty does not protect against acts of God
such as flood, lightning, earthquake, war, vandalism, theft, normal-use
wear and tear, erosion, depletion, obsolescence, abuse, damage due
to low voltage disturbances (i.e. brownouts or sags), non-authorized
program, or system equipment modification or alteration.
How to get service.
To get service for your Belkin product you must take the following steps:
1. Contact Belkin International, Inc., at 12045 E . Waterfront
Drive, Playa Vista, CA 90094, Attn: Customer Service, or call
(800)-223-5546, within 15 days of the Occurrence. Be prepared to
provide the following information:
a. The part number of the Belkin product.
b. Where you purchased the product.
c. When you purchased the product.
d. Copy of original receipt.
2. Your Belkin Customer Service Representative will then instruct
you on how to forward your receipt and Belkin product and how to
proceed with your claim.
Belkin reserves the right to review the damaged Belkin product. All
costs of shipping the Belkin product to Belkin for inspection shall be
borne solely by the purchaser.
If Belkin determines, in its sole discretion, that it is impractical to ship
the damaged equipment to Belkin, Belkin may designate, in its sole
discretion, an equipment repair facility to inspect and estimate the cost
to repair such equipment. The cost, if any, of shipping the equipment
to and from such repair facility and of such estimate shall be borne
solely by the purchaser. Damaged equipment must remain available
for inspection until the claim is finalized. Whenever claims are settled,
Belkin reserves the right to be subrogated under any existing insurance
policies the purchaser may have.