Transmit Clock; Figure 6-6. Transmit Clock Options; Table 6-4. Transmit Clock At Commands - ADTRAN DSU III ARdc User Manual

Transmit Clock

The TRANSMIT CLOCK option is used to select the source of the clock
used to transfer data from the DTE to the DSU III ARdc. Figure 6-6 shows
the menu path used to set the TRANSMIT CLOCK option.
1=LOCAL
3=CONFIG
2=REMOTE
Table 6-4 shows the AT commands used to set the Transmit Clock option.
1=NORMAL
2=EXTERNAL
The EXTERNAL clock option is normally used in modem tail circuit
applications. A DSU-to-modem interconnect diagram for this application
is shown in Appendix C "DSU-to-Modem Interconnect" on page C-1.
The EXTERNAL clock option is also recommended when the EIA-232
connector is used for 56 kbps and 64 kbps applications. A special DSU
61200270L1-1
1=NETWORK OPT.
2=DTE OPTIONS
ENTER ADDRESS
3=TEST OPTIONS
4=DIAL OPTIONS
5=MANUAL COMMAND

Figure 6-6. Transmit Clock Options

Table 6-4. Transmit Clock AT Commands

Front AT
Panel Command
&X0
&X1
DSU III ARdc User Manual
Chapter 6. Configuring DTE Options
1=DTE RATE
2=CONNECTOR TYPE
3=DATA FORMAT
4=DTE CMD OPTION
5=TRANSMIT CLOCK
6=CS OPTIONS
7=ANTI-STREAM
8=CD OPTIONS
9=TR OPTIONS
A=SR OPTIONS
Description
TX clock from DSU selected
ETC clock from DTE selected
1=NORMAL
2=EXTERNAL
6-7