Telex Car Video System Echelon 25XT User Manual

Telex  
User Instructions  
Echelon 25XT  
Noise Reduction Headset  
 
Headband Size Adjustment  
To adjust the headband size, move the  
earcup sliders up or down on the  
headband. Size is properly adjusted  
when the earcups are centered over the  
ears. It is important to make the same  
adjustments to both sides of the  
headband to keep the headband and  
pad properly centered over the head.  
Figure 1  
Headband Size Adjustment  
Headband Pressure Adjustment  
There are three pressure settings for  
headband comfort. Increasing the  
pressure will improve the seal between  
the earcup and the head for greater  
noise reduction. To change the pressure  
setting, remove the headset and fold the  
earcup inward as shown, then rotate the  
Comfort Cam adjustment knob to the  
desired setting. Repeat for both earcups.  
Both sides of the headband should be  
set to the same pressure setting to keep  
the headband properly centered on the  
head.  
Comfort Cam™  
ADJUSTMENT KNOB SETTINGS  
HIGH  
MEDIUM  
LOW  
Figure 2  
Headband Pressure Adjustment  
Left or Right Side Microphone Placement  
1.  
Rotate the boom as shown.  
2.  
Reshape the boom so that the  
microphone will be at the  
corner of the mouth.  
Figure 3  
Rotating and Reshaping the  
Boom  
Page 1  
 
Connection  
Connect the headset to the aircraft radio or intercom system as shown in  
Figure 4.  
Mute Switch  
To Radio Microphone “IN” Jack  
Cell Phone Jack  
Auxilary Jack  
To Radio Receiver “OUT” Jack  
Stereo/Mono Switch  
Figure 4  
Echelon 25XT Connectors  
Stereo Mono Switch  
This switch is located on the Y-cord (Figure 4). Set the switch to stereo  
for aircraft with a stereo intercom system. Set the switch to mono for  
monaural intercom systems or for direct connection to the aircraft radio.  
Cellphone/Audio Interface  
The Echelon 25XT includes a unique amplified interface allowing for the  
connection of a cellular telephone and an audio input simultaneously. This  
configuration allows the user to set up before take-off and eliminates the  
need to re-configure cords and equipment when operating the aircraft.  
The other unique feature of this interface is the ability to obtain power  
from the aircraft’s possessive communications system. This feature  
results in increased battery life for the ANR system while maintaining the  
benefits of an amplified interface. By amplifying the inputs, the Echelon  
25XT allows the user to adjust volume level at the headset contributing to  
the ability to not need re-configuring while in flight.  
The Telex Echelon 25XT cell phone/audio interface has been designed to  
function with the widest array of cellular telephones and portable audio  
devices. There are cell phones and audio devices on the market not  
designed to industry physical and electrical standards. These devices are  
not guaranteed to function properly with the Echelon 25XT headset.  
Please see the Telex web site for additional information.  
Page 2  
 
Volume Adjustment  
When the microphone is worn on the left side, volume is increased by  
rotating the top of the volume controls clockwise. Control operation is  
reversed when the microphone is worn on the right side.  
Microphone Gain Adjustment  
The microphone gain has been  
factory-adjusted to the nominal  
level required for aircraft use  
and should normally not require  
readjustment. Readjustment by  
a qualified avionics technician is  
recommended. To access the  
gain trimmer, insert a small flat-  
blade screwdriver through the  
access hole in the mic element  
(Figure 5). Clockwise rotation of  
the trimmer increases gain.  
MIC GAIN  
ADJUSTMENT  
ACCESS  
Figure 5  
Mic Gain Adjustment  
Ear Cushion Replacement  
To remove an old ear cushion, simply grasp it and pull it off the earcup.  
To install a new ear cushion, start at the top of the earcup. Place the flap  
on the back of the ear cushion over the lip along the top of the earcup.  
Then pull the bottom of the ear cushion down over the lip at the bottom  
of the earcup.  
RELEASE CATCH  
Mic Element Removal  
Press the release catch on the  
microphone element, and  
carefully pull out the element.  
Avoid pulling the microphone  
wires. Pull on the plastic  
MIC ELEMENT  
connector housing to unplug the  
microphone element.  
Figure 6  
Mic Element Removal for  
Replacement  
Page 3  
 
Specifications  
Receivers  
Type: Dynamic  
Impedance: Accepts 150-600 ohm sources  
Frequency Response: 350 Hz - 3.0 kHz ± 6dB  
Sensitivity: 90 ±5 dB SPL for 1 mW, 1 kHz input  
Maximum Power Input: 30 mW  
Microphone/Amplifier Assembly  
Microphone Type: Noise-canceling electret condenser  
Output Impedance: 50 ohms (designed for radio input impedances from  
50-600 ohms)  
Frequency Response: 100 Hz - 3.5 kHz  
Sensitivity: -50 +/-6 dB (ref: 1V/ µbar)  
Operating Voltage: 8-16 Vdc  
Cords and Plugs  
Cord: 5.5 ft (1.7 m) “Y” cord with stereo/mono selector switch  
Receiver Plug: 1/4" stereo phone plug  
Microphone Plug: PJ-068 equivalent  
Parts List  
Item  
No.  
Part No.  
Description  
Qty  
1
800456022  
590637000  
800136100  
800456021  
800456000  
CME000009000  
Replacement Head Pad  
Cord Clip  
1
1
1
1
1
1
2
3
Microphone Element Assembly  
Foam Ear Pads (set of 2)  
Windscreen  
4
5
6
Carrying Case  
Page 4  
 
TELEX COMMUNICATIONS, INC. - LIMITED WARRANTY  
Uniform LimitedWarranty: Telex branded products are warranted by Telex Communications, Inc. against  
malfunction due to defects in materials and workmanship for a specified period, as noted in the individual  
product line statements below, beginning with the date of original purchase by the end-user. If such  
malfunction occurs during the specified period, the product will be repaired with new or remanufactured  
equivalent parts and products or replaced (at our option) without charge. The product will be returned to  
the customer postage prepaid.  
Exclusions and Limitations: The limited warranty does not apply to: (a) exterior finish or appearance;  
(b) certain specific items described in the individual product line statements below, (c) malfunction resulting  
from use or operation of the product other than as specified in the product data sheet or owner’s manual;  
(d) malfunction resulting from misuse or abuse of the product, including accidents; (e) defects resulting  
from excess moisture, lightning or power surges; or (f) malfunction occurring at any time after repairs  
have been made to the product by anyone other than a Telex Service Department employee or any of its  
authorized service representatives. The warranty is void if the label bearing the product serial number (if  
applicable) has been removed or defaced.  
Other Express or Implied Warranties Excluded: TO THE EXTENT PERMITTED BY APPLICABLE  
LAW, THE WARRANTIES SET FORTH HEREIN ARE IN LIEU OF, AND EXCLUSIVE OF, ALL OTHER  
WARRANTIES, EXPRESS OR IMPLIED. SPECIFICALLY EXCLUDED, WITHOUT LIMITATION, ARE  
THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR USE OR FORAPARTICULAR PURPOSE,  
AND WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE OR ANY OTHER  
MATTER. IF, UNDERAPPLICABLE LAW, IMPLIED WARRANTIES MAY NOT BE VALIDLY EXCLUDED,  
THE DURATION OF SUCH IMPLIED WARRANTIES IS LIMITED TO THE WARRANTY PERIOD.  
Limitation of Remedies; Certain Damages Excluded: REPAIR OR REPLACEMENT OF DEFECTIVE  
PRODUCTSARE THE SOLEAND EXCLUSIVE REMEDIES PROVIDED BYTELEX TO THE CUSTOMER  
OR TO ANY OTHER PERSON AND SHALL CONSTITUTE FULL SATISFACTION OF ALL CLAIMS,  
WHETHER BASED ON CONTRACT, NEGLIGENCE, STRICT LIABILITY OR OTHERWISE. TELEX’s  
MAXIMUM LIABILITY SHALL NOT EXCEED THE ACTUAL PURCHASE PRICE PAID FOR THE  
PRODUCT BY THE CUSTOMER. TELEX AND ITS SUBSIDIARIES SHALL NOT BE LIABLE FOR ANY  
INDIRECT, INCIDENTAL, PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING,  
WITHOUT LIMITATION, INJURY TO PERSONS OR PROPERTY OR LOSS OF USE. SOME STATES  
AND COUNTRIES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF CERTAIN DAMAGES, SO  
THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. IN SUCH STATES AND  
COUNTRIES, TELEX SHALL BE LIABLE FOR NO MORE THAN THE DIRECT DAMAGES FOR BODILY  
INJURY AND/OR REAL OR PERSONAL PROPERTY ARISING FROM THE NEGLIGENCE OF TELEX.  
Other Rights: This warranty gives you specific legal rights, and you may also have other rights, depending  
upon where you live.  
ObtainingWarranty Service: To obtain warranty service, a customer must deliver the product, prepaid,  
to the appropriate Telex Service Department listed below or any of its authorized service representatives  
together with proof of purchase of the product in the form of a bill of sale or invoice.  
Applicable Law. The validity, performance and construction of this limited warranty shall be governed by  
the laws of the State of Minnesota without reference to its choice of law principles. The Minnesota federal  
courts and/or the state courts located in Hennepin County, Minnesota, shall have exclusive personal and  
subject matter jurisdiction over, and the parties shall each submit to the jurisdiction of such courts and to  
venue in Minnesota with respect to any dispute concerning the product or pursuant to this limited warranty,  
and all objections to such jurisdiction or to such venue are hereby waived.  
For additional warranty repair or service information, contact theTelex Service Department listed  
below:  
USA, Canada, & Latin America  
1720 E 14th Street  
Glencoe, MN 55336  
Tel: 320-864-3177  
Fax: 320-864-3225  
Page 5  
 
CUSTOMER SERVICE  
For information or technical assistance, call, write, or email Telex at:  
Customer Service Department  
Telex Communications, Inc.  
12000 Portland Ave. So.  
Burnsville, MN 55337 U.S.A.  
(952) 884-4051  
When returning equipment for repair, please enclose an explanation of  
the problem. And, if the equipment is covered under warranty, please  
enclose a copy of your proof of purchase. The equipment must be  
accompanied by documentation stating your name, return address, and  
telephone number.  
Return equipment for factory repair to:  
Customer Service Department  
Telex Communications, Inc.  
1720 East 14th St.  
Glencoe, MN 55336 U.S.A.  
(320) 864-3177  
Warranty Repairs - If in warranty, no charge will be made for the repairs.  
Equipment being returned for warranty repair must be sent prepaid and  
will be returned prepaid.  
Non-warranty Repairs - Equipment that is not under warranty must be  
sent postage prepaid to Telex. If requested, an estimate of repair costs  
will be issued prior to service. Once you approve repair, and repair of  
equipment is completed, the equipment will be returned on a collect on  
delivery basis. Collect charges may be avoided by sending a signed  
check for payment in full along with your signed estimate approval form  
(the estimate includes the shipping charge).  
Telex Warranty Term Lengths  
1
3
12  
24  
60  
Other  
Month Months Months Months Months  
AVIATION  
Echelon 25XT  
X
Note: Subject to change without notice.  
 
Notes  
 
Notes  
 
Notes  
 
LIT000014 Rev A  
 
04/2006  

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