Meinberg SDU - Manual (Page 5)

5
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: 0.5V
pp
...4V
pp
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