NDA-24296 CHAPTER 3
Page 209
Revision 1.0
PH-CK17
Phase Lock Oscillator
PH-CK17
Phase Lock Oscillator
1. General Function
This circuit card, used together with a direct digital interface circuit card, sets up network synchronization
with the network. Since this circuit card provides a high precision base clock oscillator, the 4 IMG system
can be a clock source office for the digital network. As seen in Figure 3-20, the PLO can be redundant
regardless of the system switching network selection.
Figure 3-20 Location of PH-CK17 (PLO) Card in the System
TDSW00 TDSW01 TDSW02 TDSW03
SEL
PLL PLL
PLO #0 PLO #1
OSC OSC
TDSW10 TDSW11 TDSW12 TDSW13
SEL
34PH EXCLK CA-A 34PH EXCLK CA-A
MDF
MDF
BWB BWB
BWBBWB
DTI 0 CLOCK SOURCE
DTI 1 CLOCK SOURCE
DTI 2 CLOCK SOURCE
DTI 3 CLOCK SOURCE
DCS 0
DCS 1