Control Port Operation
61247026L1-5A
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CONTROL PORT OPERATION
The T200 HTU-R, SP/60 mA provides a front panel mounted DB9 connector that supplies an
RS-232 interface for connection to a controlling terminal. The pinout of the DB9 is illustrated
in
.
Figure 3. RS-232 (DB9) Pin Assignments
The terminal interface operates at data rates from 1.2 kbps to 19.2 kbps. The asynchronous
data format is fixed at 8 data bits, no parity, 1 stop bit, and no flow control. The supported
terminal type is VT100 or compatible.
NOTE
If using a personal computer (PC) with terminal emulation
capability, be sure to disable any power saving programs.
Otherwise, communication between the PC and the HDSL unit may
be disrupted, resulting in misplaced characters or screen time-
outs.
Pin 3 - Receive Data (RXD)
Pin 2 - Transmit Data (TXD)
Pin 5 - Signal Ground (SGN)
