CDM-625 Advanced Satellite Modem
Revision 1
Clock Modes and Drop and Insert (D&I)
MN-0000036 (Ref MN/CDM625.IOM)
9–14
Figure 9-9. G.703 Clock Extension Mode 3
Notes:
1) The IP interface can be set to
any desired data rate, with 1 bps
resolution
2) Tx and Rx rates can be
asymmetrical
LOCAL END
DISTANT END
G.703 input (T1/E1)
from high stability
network source
IP I
n
terf
ace
CDM-570/570L
Clock
Synth
Core
Demod
Mod
CLK
DATA
G.70
3 Po
rt
2048 or
1544 KHz
O
Tx timing mode:
Internal clock, locked to
external G.703
Rx:
Buffer disabled
G.703 output (T1/E1)
(all ones pattern)
IP Inte
rf
a
c
e
CDM-570/570L
G.703
Po
rt
O
Timing mode:
Rx buffer disabled
ETHERNET
B
END RESULT:
The G.703 signal at is perfectly reproduced
at , regardless of the exact link data rate
A
B
Rx clock at desired link data rate
A
Any desired
data rate
CLK
DATA
(HDLC)
Clock
Synth
Core
Demod
Mod
RT
2048 or
1544 KHz
CDM-625
RD
(HDLC)
CDM-625
ETHERNET
Содержание CDM-625
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Страница 26: ...CDM 625 Advanced Satellite Modem Revision 1 Preface MN 0000036 Ref MN CDM625 IOM xxiv Notes...
Страница 48: ...CDM 625 Advanced Satellite Modem Revision 1 Introduction MN 0000036 Ref MN CDM625 IOM 1 22 Notes...
Страница 148: ...CDM 625 Advanced Satellite Modem Revision 1 Front Panel Operation MN 0000036 Ref MN CDM625 IOM 5 76 Notes...
Страница 182: ...CDM 625 Advanced Satellite Modem Revision 1 Ethernet Management MN 0000036 Ref MN CDM625 IOM 6 34 Notes...
Страница 206: ...CDM 625 Advanced Satellite Modem Revision 1 Forward Error Correction Options MN 0000036 Ref MN CDM625 IOM 7 24 Notes...
Страница 240: ...CDM 625 Advanced Satellite Modem Revision 1 EDMAC Channel MN 0000036 Ref MN CDM625 IOM 11 4 Notes...
Страница 244: ...CDM 625 Advanced Satellite Modem Revision 1 Offset QPSK Operation MN 0000036 Ref MN CDM625 IOM 13 2 Notes...
Страница 258: ...CDM 625 Advanced Satellite Modem Revision 1 Eb No Measurement MN 0000036 Ref MN CDM625 IOM B 4 Notes...
Страница 320: ...CDM 625 Advanced Satellite Modem Revision 1 Remote Control MN 0000036 Ref MN CDM625 IOM D 60 Notes...
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