HDSL4 for General Distribution Installation and Maintenance Practice
Control Port Operation
61223HDSL4L2-5C
19
CONTROL PORT OPERATION
The H4TU-C module, with exception of the Total Access 3000 module, provides a DB-9
connector on the front panel that supplies an RS-232 interface for connection to a controlling
terminal. The pinout of the DB-9 is illustrated in
Figure 9. RS-232 (DB-9) Pin Assignments
NOTE
The Total Access 3000 H4TU-C Control Port access is provided via
the DB-9 connector on the Total Access System Controller Unit
(SCU), P/N 1181018Lx. This section provides Total Access 3000
H4TU-C screens separately where they differ from other HDSL4
screens.
NOTE
When the ADC HiGain® Management Unit (HMU) is installed, the
3192M DB-9 is disabled. Terminal screens must be accessed from
any one of these HMUs:
HMU-319-L7A
HMU-319-L7AV307
HMU-319-L7A32
The terminal interface operates at data rates from 1.2 kbps to 19.2 kbps.
The Total Access 3000 SCU default rate is 9.6 kbps, and can operate to data rates as high as
115.2 kbps.
The asynchronous data format is fixed at the following parameters:
• 8 data bits; no parity; 1 stop bit
• Disable the line wrap feature of emulation programs
An H4TU-C module supports two types of terminal emulation modes:
• Manual Update Mode - This mode is a dumb terminal mode, enabling easy access to print
screen and log files commands. This mode also includes a “3 SPACES TO UPDATE”
message on the top of the terminal screen (press the spacebar three times to update the
screen).
6
7
8
9
1
2
3
4
5
TXD (Transmit Data)
RXD (Receive Data)
SGN (Signal Ground)
