Clear-Com 4000 series II, Техническое руководство

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Technical Manual Issue 2.1 4000 Digital Series
II
Page 62 STA0381
3.8 PDE 4536 Coax/Fibre Options Card
The PDE4536 is the coax/fibre options board for the 4000 series II panel range. It is plug compatible
with both the PDE4535 & PDE4538 panel processor cards.
The PDE 4536 has two build versions depending on the type of interconnection required.
The PDE4536 allows 75W coax interconnection between the control panel and the matrix, whilst the
PDE4536MMST allows multi-mode fibre interconnection on ST connectors.
Figure 56 - PDE4536 Coax/Fibre Options Card
3.8.1 PDE4536 Circuit description
U1 is the line transceiver for either the coax or fibre connector.
Transmitted data out comes from CON2 since the transmitting device resides on the panel processor
card. Received data passes to U2, which extracts the clock & control data from the audio data.
This audio data is passed to U4, the stereo codec IC, which converts it to analogue. The left and right
audio signals are buffered by U3 and passed to CON2 for the panel processor card.
Note: LK1 must be fitted before the right hand audio signal is allowed to pass.
The left and right audio signals from the panel processor card are converted by U4 to digital signals and
passed back to the panel processor card for interlacing with the transmitted control data.
U5 (optional) provides a fibre link.
U3
U5
U4
U1
U2
CON1
CON2 LK1