Meinberg DU35S User Manual
FUNKUHREN
Technical Information
Operating Instructions
DU35S
Impressum
Werner Meinberg
Auf der Landwehr 22
D-31812 Bad Pyrmont
Phone: ++49 52 81 - 9309-0
Fax: ++49 52 81 - 9309-30
Internet: http://www.meinberg.de
Email: info@meinberg.de
March 15, 2005
Table of Contents
Impressum ............................................................................................ 2
Features of the DU35S.........................................................................5
Installation............................................................................................ 5
Power Supply.............................................................................. 5
DU35S as Stand Alone Clock .............................................................. 6
DU35S as Slave Clock ......................................................................... 6
Usage of the Buttons MENU and SET ................................................ 6
The Menus in Detail ................................................................... 7
Time .................................................................................. 7
Date ................................................................................... 7
Language ........................................................................... 7
Mode..................................................................................7
Brightness.......................................................................... 7
Serial ................................................................................. 7
Time Zone ......................................................................... 8
Daylight Saving................................................................. 8
Exit .................................................................................... 9
Rear View DU35S ............................................................................. 10
Rear Panel Connectors.............................................................. 11
CE Label ............................................................................................ 11
Connection Exaples............................................................................ 12
Pin Assignments of SUB-D Connector IN ............................... 14
Pin Assignments of SUB-D Connector OUT ........................... 14
Technical Specifications: ................................................................... 15
Format of the Meinberg Standard Time String ........................ 16
Jumper Arrangement.......................................................................... 17
Features of the DU35S
The large display DU35S is a 300mm x 300mm LED matrix display that shows the
time and date. It can be run either as a free running stand alone clock or as a serial
driven slave clock.
Fig.1:
Front View
In case of supply voltage failure the on board RTC keeps the time based on XTAL
for at least 10 years. The language displayed can be choosen. The wall mounted
housing of the DU35S is made of plastic coated steel sheet.
The power connector, the (optional) antenna input and the RS232/20mA interfaces
provided by DU35S are accessible via connectors in the rear panel of the case.
Installation
P ower Supply
The requested supply voltage is applied via the power cord receptacle in the rear
panel. After connecting the power cord the system is ready to operate and the time/
date is displayed immediately.
5
DU35S as Stand Alone Clock
After connecting the mains power the shown time can be set by the two buttons in the
rear panel of the case. The accuracy of the time depends on the precision of the
internal quartz base.
An automatic changeover of daylight saving can be programmed as described in
section "Daylight Saving".
DU35S as Slave Clock
The DU35S can be synchronized by a preconnected radio clock that sends time strings
periodically. When the radio clock stops sending time strings the DU35S continues by
running on XTAL.
The data transmission occurs either:
- via RS232 or
- via 20mA current loop.
It is possible to connect several DU35S' or other similar displays via series
connection to one radio clock.
Usage of the Buttons MENU and SET
The time and date, the language, the brightness, the serial parameters and the automatic changeover of daylight saving can be edited by using the buttons MENU and SET.
The button MENU is used to change over from the normal operation mode into the
'set parameters' mode and to select the different menus. The button SET is used to
modify the selected parameter. When leaving the menu by pushing MENU the
modification is acknowledged. When no button is pushed for more than 30 seconds
the DU35S goes back into normal operation mode with loosing the last modification
that was not acknowledged. The menus in detail are described below.
6
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