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THIS EQUIPMENT COMPLIES WITH FCC REQUIREMENTS 

PURSUANT SUBPART J OF PART-15 

 

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. 

 

WARNING: Changes or modifications to this product not expressly approved by the party responsible 
for compliance could void the user’s authority to operate this equipment. 

 
NOTE: This equipment has been tested and found to comply with the limits for a  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 and, if not installed and used in accordance with the instructions, may 

cause harmful interference to radio communications. However, there is no guarantee that 
interference will not occur in a particular installation. If this equipment does cause harmful 

interference to radio or television reception, which can be determined by turning the equipment off 
and on, the user is encouraged to try to correct the interference 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 for help. 

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled 
environment. This equipment should be installed and operated with minimum distance 20cm between 

the radiator and your body. This Transceiver must not be co-located or operating in conjunction with 

any other antenna or Transceiver. 

 

Disclaimer 

The information within this document has been carefully checked and is believed to 
be entirely reliable. However, no responsibility is assumed for inaccuracies. Lathem 

Time Corp. reserves the right to make changes to any products herein to improve 
reliability, function, or design. 

 

Trademark 

AirTime, Lathem and the Lathem logo are registered trademarks of Lathem Time 
Corporation. Other product names mentioned in this manual may be trademarks of their 
respective companies and are hereby acknowledged. 

WARNING: Changes or modifications to this product not expressly approved by the party 

responsible for compliance could void the user’s authority to operate this equipment. 

 

Copyright © 2009 Lathem Time Corporation. All rights reserved. 

 

Lathem Inc 

200 Selig Drive SW 

Atlanta, GA 30336 

www.lathem.com

 

 

 

 

Other AirTime Products 
 
 

 

ATX

 

Mini Transceiver capable of 

receiving the WWVB signal and 
transmitting exact time in smaller 

facilities 

 

 
 

 
AT12RPS 

Solar Powered

 

12” Analog  

  Wireless 

Wall 

Clock 

 

 

 
 

 
 

 

 

AT-ANTOD

 

Outdoor Antenna for maximum 
coverage with the ATX6 or the AT20WT 

 
 
 

 
 

 
 

 
 

AT-MSX

 

AirTime receiver that accepts the AirTime signals from 
an ATX, ATX6 or AT20WT and 

corrects Lathem RS485 
devices or Intercom systems 

via a 12:00AM dry contact 
closure 

 
 

 
Contact your distributer or visit 

www.lathem.com

 for more information

 

Summary of Contents for ATDDC4

Page 1: ...Wireless Digital Wall Clock Model ATDDC4 Installation User s Guide...

Page 2: ...nected Consult the dealer or an experienced radio TV technician for help This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment This equipment should be i...

Page 3: ...athem be liable for any direct indirect special incidental or consequential damages arising out of or in connection with the delivery use or inability to use or performance of this product In the even...

Page 4: ...Military style 12 Hour Format AM PM 24 Hour Format AM PM ATDDC4 Series Installation User s Guide Page 11 Specifications Dimensions 6 3 4 H X 15 1 2 W X 3 1 8 D 17 1 cm H X 39 cm W X 7 9 cm D Weight 9...

Page 5: ...ion User s Guide Page 3 To set the display format use the jumper J1 located on the back of the circuit board which can be accessed by removing the right side end cap and sliding the circuit board out...

Page 6: ...ommodate conduit if desired Note If mounting near a ceiling make sure the holes are at least 2 1 4 away from the ceiling Also provide at least 16 of side clearance on one side in order to remove the f...

Page 7: ...ble from the bottom Note Optional plastic end panels may be ordered left VIS1551 L right VIS1551 R that have access holes pre drilled for side access Power Cord Installation The optional AC Power Cord...

Page 8: ...wo Phillips head screws 3 When the clock is energized it will set itself upon receiving the AirTime radio signal ATDDC4 Series Installation User s Guide Page 7 Double Mount Wall The ATDDC4 SERIES requ...

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