Meinberg UA32S - Manual (Page 9)

9
Buffered Real Time Clock
If the board's power supply is turned off, a gold cap capacitor on the board lets the real
time clock keep time and status for typically 300 hours (150 hours minimum). This
capacitor does not need any maintenance. Alternatively, the clock can be ordered with a
lithium battery which has 10 years of life time guaranteed.
Display
Only the100,8mm (20HP) wide front panal contains an 7-digit LED display with 10mm
character height shows the time or date of the UA32S. A switch in the front panel lets the
user select to view either date or time.
Control LEDs
MOD: shows the time marks from DCF 77
FELD: brightness of this LED depends on the strength of the RF signal
FREIL: clock is running on xtal
Asynchronous Serial Port
The asynchronous serial port can be used to transmit information on date, time, and
status to other devices. Transmission speed and mode of operation can be configured by
changing parameter bytes in the on-board EPROM. See the chapter "Technical Informa-
tion" for details. Customers can specify their preferred settings when they order the
board.
Optocoupler and Relay Outputs
The programming of the switch outputs is done via byte tables in the on-board EPROM.
Each of the outputs can either be programmed as pulse output with pulse widths from 0.1
sec to 10 sec, or as time dependent switch output with three turn-on times and three turn-
off times per output. Separate byte tables are available for working days and weekend.
When the radio clock is ordered, the customer can specify his preferred configuration.
When the clock is shipped, this configuration is placed in the EPROM without additional
fee.