NEC ND-71762(E) system manual Route Automatic Changeover Priority Order DCS connection

GENERAL INFORMATION FOR CCIS

5.5 Automatic Clock Route Changeover

5.5.1Automatic Route Changeover on Fault to M-OSC/EXT. OSC of Input Clock Route

Priority order for automatic route changeover on fault occurrence to the M-OSC/EXT. OSC which are supplying clocks is shown in Figure 2-16.

Figure 2-16 Route Automatic Changeover Priority Order (DCS connection)

Changeover

sequence

M-OSC/EXT.OSC 0

M-OSC/EXT.OSC 1

PLO/OSC Self Running

High

Priority order

Low

5.5.2Automatic Route Changeover on Fault to DTI of Input Clock Route

Priority order for automatic route changeover on fault occurrence to the DTI which is extracting clocks is shown in Figure 2-17.

Figure 2-17 Route Automatic Changeover Priority Order (DTI connection)

Changeover

sequence

Route 0

High

Route 1

Route 2

Priority order

Route 3

PLO/TSW Self Running

Low

CHAPTER 2 ND-71762 (E)

Page 22

Issue 2