|
The DDT-4690 accepts up to eight 270 Mb/s input
signals which may be ASI, SDI or a mixture of each
type. The signals need not be phase or frequency
synchronous.
The signals are multiplexed into a
single 2.97 Gb/s stream and transmitted via single
mode fibre. The DDR-4690 receiver
performs the reverse operation, de-jitters each channel and restores correct
270 Mb/s timing.
In addition to the eight 270Mb/s channels, a single data channel is included for uni-directional transmission of
auxiliary data.
The DDT-4690/DDR-4690 system is
primarily designed for use with a 9/125µm single
mode fibre and will allow an optical path loss up to 27dB.
|
The DDT-4690 transmitter comes standard with a 1310nm DFB laser. Other CWDM wavelengths are available. The DDR-4690 receiver comes standard with an APD detector.
SNMP (Simple Network Management Protocol) is available for monitoring and control when used in an IRT frame fitted with SNMP capability. Channels can be individually enabled or disabled via SNMP.
The modules are designed to fit IRT’s standard
Eurocard frames and may be used
alongside any other of IRT’s analogue or digital
Eurocards.
|
