S/5 M-PRESTN Modules
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Document No. 8005571-1
Signals and isolation barrier
The communication signals transfer over the isolation barrier by using high isolation voltage (6kV)
opto isolators.
Power supply section
The power for the electronics on the floating part of the STP and the ECG boards is made on each
board with the switching power supplies connected to a high voltage isolated transformer. The
switching power supplies on the STP and ECG boards are synchronized to the frequency, about
340kHz of the switching power supply on the NIBP board. The PRESTN module uses only +15VD
voltage of the frame. The other voltages of the measuring boards are made by the switching power
supplies and regulators or the linear regulators. Each measuring board is protected against
overloading with PTC type automatic fuses.
2.3 Connectors and signals
2.3.1 Module bus connector (on the NIBP board)
13
1
14
25
Figure 14
Module bus connector (X1) pin layout
Summary of Contents for S/5 PRESTN
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