CHAPTER 3 NDA-24296
Page 192
Revision 1.0
PH-CK16-A
Phase Lock Oscillator
PH-CK16-A
Phase Lock Oscillator
1. General Function
This circuit card, used with a direct digital interface circuit card, sets up network synchronization. With this
circuit card, the system can be a clock subordinate office of the digital network. As seen in Figure 3-10, the
PLO can be redundant regardless of the system switching network selection.
Figure 3-10 Location of PH-CK16-A (PLO) in 4-IMG System
OSC
64K+8K
(BWB)
(BWB)
CLK, FH, WFH
ACT, ALM
34PH EXCLK CA-A
PLO #0
TSW 00
BWB BWB
DTI0 DCS0
(MDF)
DCS1123
PLO #1
SEL
PLL
Drv
SEL
PLL
Drv
OSC
34PH EXCLK CA-A
TSW 01 TSW 02 TSW 03 TSW 00 TSW 01 TSW 02 TSW 03