Telenetics Corporation FT100 S, Installation And Operation Manual

Page: 68 / 134

Front Panel Option Selection
4-40 FT 100S
PUSHBUTTON ACTION:
YES-
Selects the first DS0 channel number ff and advances to the
transmit clock source display
NO- Increments the starting DS0 number ff and displays the
ending DS0 number ll
HOME- Returns to Port Number Selection
Transmit Clock Source
This display selects the DTE transmit clock source:
Internal The unit uses the transmit clock output to clock DTE
transmit data into the transmit buffer. Where the DTE is
located near the unit, internal clock is usually selected.
External The unit uses the external transmit clock from the DTE to
clock DTE data. In applications with a high bit rate and a
long DTE cable, it may be necessary to use the external
clock option.
In external clock operation, the transmit clock output from the unit is
routed to the DTE and sent back to the unit along with the data line. This
eliminates any phase misalignment between the clock and data signal
due to cable phase delay and insures a proper signal / clock relationship
at the unit input.
PUSHBUTTON ACTION:
YES-
Selects the displayed option and advances to transmit clock
polarity display
NO- Toggles between INTERNAL and EXTERNAL options
HOME- Returns to Port Number Selection
DTE Port <type>
Tx CLK = <source>