Control Port Operation
61247004L1-5A
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CONTROL PORT OPERATION
The 3192 HTU-C provides a faceplate-mounted DB9 connector that supplies an RS-232
interface for connection to a controlling terminal. The pinout of the DB9 is illustrated in
Figure 5. 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, and 1 stop bit. The supported terminal type is
VT-100 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)