Lathem AirTime ATX6 - Manual (Page 18)

ATX6 Installation and User Guide
Page 14
Operating Modes:
Normal:
In Normal Mode, the ATX6 will listen for synchronization signals from
the device selected as the Time Reference (Set-Up parameter # 7). If
an external Time Source is selected, the ATX6 will synchronize its Real-
Time-Clock to that source, when the synchronization signal is received.
In the event of a power failure, the RTC Date and Time parameters are
protected and continue to operate using a Lithium “coin-cell” battery.
In Normal Mode, the ATX6 transmits a radio signal (indicated by the
UHF LED flashing once) to other ATX-series devices during the last ten
seconds of each minute, If RC Emulation is enabled (Set-Up parameter
# 15), the ATX6 will transmit a radio signal to RC-series Wall Clocks at
the top of each odd minute; except the minute designated to generate
a relay closure (see below). If an external amplifier is used, the ATX6
will transmit a signal every 15 minutes of each hour.
If “Dry Contact” (Relay) synchronization is not selected as the time
reference (Set-Up parameter #7 is not equal to ‘Syn’), then the ATX6
will activate the local Relay [and Wireless Remote Relay (option)] at
the selected HH:MM:00.
If 485 is not selected as the time reference (Set-Up parameter #7 is
not equal to ‘485’), then the ATX6 will transmit the RS-485 protocol to
synchronize Lathem Master Clocks and Bell Ringers that support the RS-
485 interface at the 40
th
second of each minute (HH:MM:40). This is
indicated by the 485 flashing indicator once.
Each day for 15 minutes, beginning at 1:05AM, 3:05AM and 10:45PM the
ATX6 will listen to and re-evaluate its radio environment, to determine
if any Automatic Time Slot adjustment is required. During this period,
the “~” symbol will flash and radio transmissions are inhibited.
Transmission parameters are automatically adjusted, as may be
necessary. If another AirTime Transceiver (ATX or ATX6) is selected as
the time reference for this unit (Set-Up parameter #7 is set to ‘Air’),
then this ATX6 will synchronize its clock to the received transmission.
The ATX6 will indicate when it receives a signal by the UHF LED
flashing twice.