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manual abstract
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. 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 Doc. No. USG0083 Revised 4-21-2009 Installation & User’s Guide Operation When connected to AC power, the AT-MSX automatically powers up and an LED on the case bottom flashes 3 times then begins flashing every 2 seconds indicating that the AT-MSX is waiting to receive an AirTime radio signal. The LED will flash brighter upon receipt of an AirTime signal. The AT-MSX will set its internal clock to the exact time and the LED will flash every second to indicate normal operation. The unit will transmit the Lathem RS485 digital signal once per minute, to provide time synchronization to other Lathem devices. It also closes the dry relay contact for two (2) seconds once per day at 23 hours 59 minutes and 58 seconds to provide a synchronization time reference signal to external third party devices such as an intercom system. Physical The AT-MSX contains a microprocessor and UHF radio receiver housed inside an impact resistant keyhole wall mount plastic enclosure. The bottom of the enclosure features a five (5) place removable terminal block connector for wiring to external devices, a red LED signal reception indicator, four (4) position program jumpers, and power port for an external AC power adaptor. Page 1 Installation & User’s Guide Install Steps Important: Before installing the AT-MSX, verify that an AirTime Transceiver is installed and properly transmitting. You should manually initiate the transmission of the AirTime signal by pressing the TRANS button on the front of your transceiver. 1. Mount the AT-MSX within range of an AirTime transceiver’s signal. It is important that the AT-MSX be mounted upright as described to achieve maximum antenna reliability. » After locating where the AT-MSX will be mounted, mark the two spots for the mounting screws using the enclosed template. » Drill a 5/16" hole at each mark » Insert wall anchors and tap flush to the wall with the hammer. » Insert both screws into wall anchors leaving 1/8" exposed. » Align both keyholes on case back and slip over the two screws. Page 2 Installation & User’s Guide 2. Pull and disconnect the removable terminal block and connect the remote devices in the RS485 or Dry Sync connecters. (IMPORTANT: RS485 requires proper polarity + to +, -to -.) Once the connections are secure, reconnect the removable terminal block. Apply a minimum of 5.0 to 7.0 lb-in torque for tightening field wires into the removable terminal block. Use Cat-3 or Cat-5 Twisted-Pair Wires. Use only Copper Wire. 3. Insert plug from AC power adapter into the Power In port. 4. Plug the power adapter into an 110vAC outlet. 5. The Status LED will flash once every two seconds. When the signal is received, the LED will flash every second and the AT-MSX will set its internal clock. Page 3 Installation & User’s Guide Wiring Diagram An AT-MSX correcting a Lathem RS485 device and/or a dry contact device. Specifications Power: 6VDC/ 300 mA wall-mount power supply. UL approved Frequency 452 MHz Channels 1x10 = 10 RS485 Connection D -/ D + terminal block Relay Connection Terminal block Relay Rating 10 VA max / 0.5 A max switch current Dimensions 6.5” wide x 3.8” tall x 2” deep Weight 0.6 pounds Operating Temperature 0 ~ + 50’C Page 4 Installation & User’s Guide Limited 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 accide...