Optional Functions - Seiko TP-20 User Manual

4. OPTIONAL FUNCTIONS

Following optional functions are available by adding an optional board.
External Time Signal for Bell, Built-in Buzzer, Slave Clock, and the Radio-Controlled Clock.
(The Slave Clock and the Radio-Controlled Clock are alternatives.)
External Time Signal and Built-in Buzzer
External time signal and Built-in buzzer shall be controlled by Time table program and their
duration settings.
Refer to the "18.SETTING THE TIME TABLE PROGRAM", and the "19.SETTING THE
EXTERNAL TIME SIGNAL / BUILT-IN BUZZER".
Connection Specifications for External time signal contact
• Contact output: dry contact
• Contact capacity: 5A, 30V (Resistive)
The Slave Clock
The Slave Clock is a function to synchronize the time of Time Stamp and the master clock. This
function operates by choosing Slave Clock by Slave Clock/DCF setup.
Refer to the "20.SETTING THE SLAVE/DCF".
Input signal Specifications.
• 30-second reversal.
Since the 30-second signal (-V side) is not received, the difference from the master clock is 30
seconds or more, and the time is not modified correctly.
• 60-second reversal.
Since the odd-numbered signal (-V side) is not received, the difference from the master clock is
one minute or more, and the time is not modified correctly.
• 59-minute impulse ( 2-wire )
From the 59th minute through the 49th minute the pulse is transmitted with line AB positive with
respect to PC.
From the 50th minute to the 59th minute the pulse is transmitted with line AB negative with
respect to PC.
During the 59th minute, the continuous pulse of 20 times is transmitted with line AB negative
with respect to PC.
As this method monitors from 5 minutes before several preset hours to input 0-minute signal,
more than 5 minutes of tolerance for a master clock can not compensate time correctly.
Pulse Specification Input sensitivity
Pulse width 0.1 second or more
Voltage 6 - 32V
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