Lathem Time Clock AT DDC4 User Manual

Wireless Digital Wall Clock  
Model AT-DDC4  
Installation & User’s Guide  
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Page 1  
Introduction  
The AirTime AT-DDC Wireless Digital Display Wall Clock is designed with  
a 4-inch red LED display that can be viewed from distances over 100  
feet. The bright red display shows the hour and minutes and can be  
configured for a 12 or 24 Hour format.  
The AT-DDC Wall Clock is synchronized by a Lathem ATX series  
transceiver’s wireless correction signal.  
The AT-DDC Wall Clock can be mounted directly to a wall, to a single  
gang outlet box or, with optional mounting kits, as double-faced units  
from the wall or ceiling.  
Clock Operation  
When the AT-DDC Wall Clock is connected to 110vAC power, the clock  
displays 12:00 AM and begins listening for a signal from an ATX series  
transceiver. Upon reception of the AirTime signal, (verified by a red  
LED flashing in the lower right corner), the clock will adjust to the  
correct time. The clock will continue to listen and correct itself as  
needed.  
Power Cord Installation  
A 3 wire grounded power cord is required. If the power cord will not be  
in conduit, secure the power cord with a cable clamp into the selected  
vent cap.  
Remove the two phillips head screws from the left or the right end cap  
and remove. Slide the circuit board out of the case. Carefully flip the  
circuit board over and lay it face down on a clean, smooth work  
surface. Remove one of the vent caps from the case of the wall clock  
and route the power cord through it to the back of the circuit board. (If  
the power cord will be routed through the back of the clock using  
conduit, route the cord through the gang box and conduit access hole  
to the back of the circuit board assembly). Strip away 1/2" of the  
protective shield from each wire of the power cord. Locate the two  
black wires leading from the back of the circuit board. Using wire nuts,  
attach the AC In line of the cord to one and the AC Return line to the  
other (normally black is AC In and white is AC Return). Attach the  
ground wire of the cord, (normally green) to the green ground screw  
located on the inside back of the case. Slide the circuit board back into  
the case, replace the end cap and secure with the two phillips head  
screws.  
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Page 2  
Time Formats  
The AT-DDC4 Series Wall Clocks can be set to display in 12 Hour or 24  
Hour format. When in 12 Hour format, a red LED in the upper left  
corner of the display indicates PM hours. When in 24 Hour format, the  
hours are displays in Military style.  
Front Panel  
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 slightly.  
Back Side of Circuit Board  
Jumper J1  
On = 12 Hour display  
Off = 24 Hour display  
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Page 3  
12 Hour Format  
AM  
PM  
24 Hour Format  
AM  
PM  
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Page 4  
Mounting  
The AT-DDC Wall Clock can be mounted directly to a wall, to a single  
gang outlet box, double hung from the wall or double hung from the  
ceiling. When deciding where the clock will be mounted, keep in mind  
that 115VAC power is required.  
Mounting to a Wall  
Tools required for mounting the clock:  
Drill with a 5/16" bit  
Hammer  
Phillips head screwdriver  
Wall anchors  
Pencil  
»
After deciding the location where the clock will be mounted,  
make two marks 12" apart and horizontal.  
Note: If mounting near a ceiling, make sure the holes are at least  
2 1/4" away from the ceiling.  
Note: Make sure you have at least 16" of side clearance on one side in  
order to remove the front panel.  
»
»
Drill a 5/16" hole at each mark  
Insert a wall anchor and tap it flush to the wall with the  
hammer.  
»
»
Insert a screw into each wall anchor leaving 1/4" exposed.  
Remove the two phillips head screws from the left or the right  
end cap and remove. Slide the front panel assembly out of the  
case and set aside.  
»
»
Line up the two keyholes on the back of the case and slip over  
the two screws and tighten securely. ( The lower mounting  
holes can be marked at this point, the case removed, holes  
drilled and wall anchors installed if so desired)  
Slide the front panel display back into the case, replace the  
end cap and secure with the two phillips head screws.  
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Page 5  
Mounting to a Single Gang Box  
Two mounting holes have been located in the center of the case 2 1/4"  
apart for mounting to a single gang wall box. A 7/8" hole has been  
placed between the mounting holes that will accept conduit if desired.  
Note: If mounting near a ceiling, make sure the top of the single gang  
box is at least 2 1/4" away from the ceiling.  
Note: Make sure you have at least 16" of side clearance on one side in  
order to remove the front panel.  
»
Remove the two phillips head screws from the left or the right  
end cap and remove. Slide the front panel assembly out of the  
case and set aside. Remove the desired vent cap that any  
Line the two holes in the case up to the single gang box and  
insert proper screws for the single gang box and tighten  
securely.  
»
»
Slide the front panel display back into the case, replace the  
end cap and secure with the two phillips head screws.  
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Page 6  
Double Mount – Wall  
The AT-DDC requires optional mounting kit (SAM0625)  
Tools required for mounting the clock:  
Flat blade screwdriver  
Phillips head screwdriver  
15/16" open end wrench  
The double wall mount plate attaches to a double or single gang box  
installed securely in the wall. Required wiring should be available  
through the gang box at time of installation.  
»
»
Remove the two chase nipples from the mounting plate posts.  
Secure the mounting plate securely to the gang box with the  
proper screws. (not supplied)  
Note: The long dimension of the mounting plate must be perpendicular  
to the ground to assure proper alignment of wall clocks.  
Mounting - Wall  
»
Remove the two phillips head screws from the left and the  
right end caps of the two DDC4 clocks and remove. Slide the  
front panel assemblies out of the cases and set aside.  
Place the two DDC4 clocks back to back and secure by inserting  
a #10 screw through the two key holes and the two lower  
mounting holes using lock washers and nuts supplied with the  
mounting kit.  
»
»
»
Attach the modified end cap to the end of the clocks that will  
be attached to the wall mount plate using the original end cap  
screws.  
Align the holes of the end cap support plate with the holes in  
the modified end cap and secure with 4 #6 phillips head screws  
(supplied)  
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Page 7  
Line the two posts from the mounting plate up with the two  
»
holes of the modified end cap. Insert the chase nipples through  
the holes of the modified end cap and secure to the mounting  
plate with a 15/16" wrench.  
»
»
»
Slide the front panel assemblies in partially. Secure the  
required wiring and install the battery if used.  
Slide the front panel assemblies in fully. Install the end caps  
and secure each with its two screws.  
Discard or store the two original end caps the modified end  
caps replaced.  
mounting plate  
modified end caps  
DDC4 cases  
end cap support  
#10 hex nuts  
#10 lock washers  
chase nipples  
#10 lock washers  
#10 screws  
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Page 8  
Double Mount - Ceiling  
Requires optional mounting kit (SAM0626)  
Tools required for mounting the clock:  
Flat blade screwdriver  
Phillips head screwdriver  
15/16" open end wrench  
The double ceiling mount plate attaches to a double or single gang box  
installed securely in the ceiling. Required wiring should be available  
through the gang box at time of installation.  
»
»
Remove the two chase nipples from the mounting plate posts.  
Secure the mounting plate securely to the gang box with the  
proper screws. (not supplied)  
Note: When mounting AT-DDC4 clocks, the long dimension of the  
mounting plate must be parallel to the long side of the clocks.  
Mounting - Ceiling  
Note: Make sure you have at least 16" of side clearance on one side in  
order to remove the front panel assembly.  
»
Remove the two phillips head screws from the left and the  
right end caps of the two DDC4 clocks and remove. Slide the  
front panel assemblies out of the cases and set aside.  
Place the two DDC4 clocks back to back and secure by inserting  
a #10 screw through the two key holes and the two lower  
mounting holes using lock washers and nuts supplied with the  
mounting kit. Note: At this point, if the DDC4 clocks will be  
mounted too near a wall on one side to secure the end caps,  
install the "wall side" end caps now.  
»
»
»
Remove the center vent cap from the top of each DDC4 clock.  
Line the two posts from the mounting plate up with the vent  
holes of the DDC4 clocks. Insert the chase nipples through the  
vent holes and secure to the mounting plate with a 15/16"  
wrench.  
»
»
Slide the front panel assemblies in partially. Secure the  
required wiring and install the battery if used.  
Slide the front panel assemblies in fully. Install the end caps  
and secure each with its two screws.  
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Page 9  
mounting plate  
DDC4 cases  
#10 hex nuts  
chase nipple  
chase nipple  
#10 screws  
#10 lock washers  
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Page 10  
Specifications  
Dimensions  
Weight  
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  
9 lbs. (4.086 kg)  
Display  
3 3/4-Inch Red 4 Segment LED  
Housing  
Extruded aluminum main case with black textured  
paint, molded plastic end caps with black texture.  
Line Power  
FCC  
115VAC, 80mA typical  
220VAC, 80mA typical (optional)  
Conforms to FCC Part 15  
Environment  
Mounting  
32o to 150 o F (0 o to 65 o C)  
95% Relative Humidity (non-condensing)  
Wall (surface)  
Single Gang Box (surface)  
Double Face (wall or ceiling) (optional)  
Trademark / Copyright  
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.  
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Page 11  
One Year Limited Warranty  
Lathem warrants the hardware products described in this guide against  
defects in material and workmanship for a period of one year from date  
of original purchase from Lathem or from an authorized Lathem reseller.  
The conditions of this warranty and the extent of the responsibility of  
Lathem Time Corporation (“Lathem”) under this warranty are listed  
below.  
1. This warranty will become void when service performed by anyone other than an  
approved Lathem warranty service dealer results in damage to the product.  
2. This warranty does not apply to any product which has been subject to abuse,  
neglect, or accident, or which has had the serial number altered or removed, or  
which has been connected, installed, adjusted, or repaired other than in accordance  
with instructions furnished by Lathem.  
3. This warranty does not cover dealer labor cost for removing and reinstalling the  
machine for repair, or any expendable parts that are readily replaced due to normal  
use.  
4. The sole responsibility of Lathem under this warranty shall be limited to repair of  
this product, or replacement thereof, at the sole discretion of Lathem.  
5. If it becomes necessary to send the product or any defective part to Lathem or any  
authorized service dealer, the product must be shipped in its original carton or  
equivalent, fully insured with shipping charges prepaid. Lathem will not assume any  
responsibility for any loss or damage incurred in shipping.  
6. WARRANTY DISCLAIMER AND LIMITATION OF LIABILITY: Except only the limited  
express warranty set forth above, the products are sold with no expressed or  
implied warranties of any kind, and the implied warranties of merchantability and  
fitness for a particular purpose are hereby expressly disclaimed. No warranties are  
given with respect to products purchased other than from Lathem or an authorized  
Lathem reseller and any such products are purchased "as is, with all faults." In no  
event will Lathem 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 event any limited remedy  
given herein shall be deemed to have failed of its essential purpose, Lathem's  
maximum liability shall be to refund the purchase price upon return of the product.  
7. Proof of date of purchase from Lathem or an authorized Lathem reseller is required  
for warranty service on this product.  
8. This Warranty grants specific legal rights. Additional legal rights, which may vary by  
locale, may also apply.  
9. Should any difficulties arise with the performance of this product during warranty,  
or with any Lathem authorized service centers, contact Lathem Time at the  
address below:  
Lathem Time  
200 Selig Drive, SW  
Atlanta, GA 30336  
Document Number: USG0084  
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