Zte ZXG10 iBSC, Руководство по установке оборудования

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ZXG10 iBSC Hardware Installation Guide
6.5 Intalling 2M Bits Clock Cable
Context
2MBits clock cable finishes the connection from 2MBits clock to CLKG/ICM, sending
2MBits clock reference to clock panel to do phase lock processing, finally implementing
system clock synchronization.
There are two kinds of 2MBits clock cables: 120 ohms PCM cable and 75 ohms micro
coaxial cable. When Clock panel rear board uses different versions (version 040503 and
071200), 120 ohms and 75 ohms 2MBits clock cables vary.
1. 120 Ohms PCM cable
l Clock panel rear board uses 120 ohms PCM cable structure with version 040503,
as shown in Figure 6-13 .
Figure 6-13 Rear Board for Clock Panel Uses 120 Ohms PCM Cable structure
with Version 040503
DB9 pins structure at end B shown in Figure 6-14 .
Figure 6-14 DB9 Pins at End B
Cable connection relationship is shown in Table 6-1 .
6-16
SJ-20110531095035-004|2011-10-28 (R2.0) ZTE Proprietary and Confidential