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DM240-DVB High-Speed Digital Modulator
The Transmit Clock (SCT) supplied by the DM240 is always Output.
Normally, this clock is used to clock the data out of the data source and
then return it to the SCTE input. The DM240 is then set to SCTE mode
eliminating any possible clock skew. Alternately, the data source can
generate the SCTE clock internally and the SCT signal can be ignored. If
SCT mode is selected, the Modulator data clock will not be locked to the
incoming data stream.
testing or fault backup.
4.2.3.2 Non-PIIC
INTERFACE TYPE:
Only the Interface types that are installed may be selected.
TERR FRAMING:
DATA POLARITY
INCLK SRC
INCLK POL
TM083 – Rev. 3.0
This mode is NOT recommended except for
{ASI, Advanced ASI, HSSI, RS-442 Serial, M2P
Parallel, DVB Parallel, G.703 T1 B8ZS, G.703 T1 AMI,
G.703 E1 UNBAL, G.703 E1 BAL, G.703 T2 UNBAL,
G.703 T2 BAL, G.703 E2, G.703 T3, G.703 E3, G.703
STS1}
Enter the Terrestrial Interface type.
{DVB 188, DVB 204, NONE}
Terrestrial Framing – Allows the user to choose framing
packet.
{NORMAL, INVERTED}
Allows the data to be used as is or to be inverted.
{SCTE, SCT}
Input Clock Source – Allows the user to choose between
an internal (SCT) and external (SCTE) clock sources.
{NORMAL, INVERTED}
Input Clock Polarity – Allows the user to use the input
clock signal as is or to invert it.
User Interfaces
4-9
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