Meinberg SDU User Manual
Technical Information
Operating Instructions
Signal Distribution Unit
SDU
Impressum
Meinberg Funkuhren GmbH & Co. KG
Lange Wand 9
D-31812 Bad Pyrmont
Phone: +49 (0) 52 81 / 9309-0
Fax: +49 (0) 52 81 / 9309-30
Internet: http://www.meinberg.de
Email: info@meinberg.de
June 22, 2009
Table of Contents
Impressum ............................................................................................ 2
The Modular System SDU IRIG/TTL ................................................. 4
Timecode Distribution SDU/IRIG ........................................................ 5
TTL Distribution Card SDU/TTL ........................................................ 6
FO Distribution Module SDU/FO ........................................................ 7
Technical Specifications SDU /MP ...................................................... 8
CE Label .............................................................................................. 8
Technical Specifications Power Supply MEAN WELL T-60B ........... 9
Technical Specifications Power Supply SD-25A-5 (DC) ................... 10
Technical Specifications Power Supply SD-25B-5 (DC) ................... 11
Technical Specifications Power Supply SD-25C-5 (DC) ................... 12
The Modular System SDU IRIG/TTL
The Signal Distribution Unit SDU is a set of equipment composed of one or two SDU
modules (IRIG-B, TTL or FO) and a power supply module, all installed in a metal
desktop case MULTIPAC and ready to operate.The input/output signales of the SDU
are accessiable via connectors in the back panel of the case.
Details of the components are described below.
SDU in desktop case MULTIPAC
front view
back view
Time Code
modulated
In-1 In-2Out-01
Out-02
Time Code Signal Distribution Unit SDU
POWER
Out-03
Out-05
Out-07
Out-04
Out-06
Out-08
Out-09
Out-10
TTL
Error-1 Error-2
Out-01
Out-03
Out-05
Out-07
Out-11
comm on off comm on off
Out-12
Out-02
Out-04
Out-06
Out-08
Out-09
Out-10
Out-11
Out-12
Module 1
Module 2
Signal
Signal
100 ... 240V AC
50/60 Hz
Alarm
Alarm
4
Timecode Distribution SDU/IRIG
The Board SDU/IRIG was designed for the distribution of IRIG-A/B Timecode signals.
It is equipped with an adjustable input amplifier as well as twelve output buffers. The
signal outputs are available via BNC connectors. By means of signal LED's, the status of
the Board is identifiable . Due to the input amplifiers adjustable gain, the boards are
cascadable.
The SDU/IRIG contains a error detection for losing signal output, this ERROR state is
signed by the Alarm LED on the front panel, and by the ERROR output connector on
the back panel.
During "OK" State the connection of the Relay is between: comm - on
During "ERROR" State the connection of the Relay is between: comm - off
The SDU/IRIG is available in two different Modules
Modul TCM: Time Code modulated unbalanced
Modul TCB: Time Code modulated balanced
Specification:
Inputs: IRIG-A/B Signal or similar timecode
with sinusoidal carrier
Input Voltage Range: 0.5Vpp...4Vpp
Input Impedance: 50 Ohm / 600 Ohm, DC-Insulated
Outputs: balanced or unbalanced
12 x IRIG-A/B Signal (or similar Timecode)
unbalanced 3Vpp (MARK), 1Vpp (SPACE) at 50 Ohm for IRIG
common GND for all outputs
balanced 2Vpp at 600 Ohm, with isolated BNC connector
Gain: adjustable automatic Gain control
Connectors:
Inputsignal 1 x BNC isolated connector
Outputsignal 12 x BNC isolated connector
5
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