Overview
DPS’s 8-Channel ASCII MUX allows you to connect up to
eight ASCII data sources to one ASCII port on an IAM or
T/MonXM master. The master controls the MUX to route data
to the appropriate port. Each channel has a 16K buffer that al-
lows data to be moved between ports at different data rates.
Variable Data Rates
In addition to switching between multiple ports, the 8 Chan-
nel ASCII MUX will select a preset data rate for each port.
Available data rates are 300, 1200, 2400 and 9600 Baud.
T/MUX Software
The MUX is programmed for various parameters with
T/ASCMUX software, running under T/Config software on a
personal computer. The craft port on the front panel is easily
accessed any time the configuration needs changing.
Downloadable Firmware
Future product upgrades will be easy to install with the
downloadable firmware. Simply connect a P.C to the craft port
and load the new firmware from a diskette.
The 8-Channel ASCII MUX is available with wire-wrap pins
for external connection or with DB9 connectors.
When the ASCII MUX is used the T/MonXM or IAM master
must be equipped with the ASCII MUX and ASCII Processing
software modules. The MUX consists of nine interface ports in-
terconnected and controlled by a processor. Associated with
each port is a “docking module” socket that allows the physical
interface to the outside world to be configured to match the as-
sociated communications channel or device. This model of the
ASCII MUX is equipped with RS 232 interfaces on each port.
The ASCII MUX is housed on a plug-in board that fits in a
1-3/4" rack-mount housing. The back of the housing provides
DB9 connectors for connecting the associated devices. The ac-
tual MUX board can be changed rapidly without removing any
of the connections.
The front panel of the ASCII MUX provides LEDs for moni-
toring unit activity and a craft port for configuration. There is a
fuse alarm indicator on the front panel and a fuse alarm output
relay that activates when the fuse blows.
the ASCII MUX operates on either -24 or -48 Volts DC, de-
pending on the option. (Options are described in the Options
and Model Numbers section on page 8.)
D-PC-180-10A-XV
1
OG109137
March 1997
Operation Guide
ASCII MUX
DPS INC
"Your Partners in Telemetry Monitoring Systems"
Fig. 1 - ASCII MUX Expands T/MonXM ASCII Ports up to Eight Times
Table Of Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Functional Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Typical MUX Applications . . . . . . . . . . . . . . . . . . . . . 2
Shipping List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Modem Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LED Display Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ACK Button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Hardware Connections. . . . . . . . . . . . . . . . . . . . . . . . . 5
Connectorized Model Layouts. . . . . . . . . . . . . . . . . . . 6
T/MonXM Implementation . . . . . . . . . . . . . . . . . . . . . 7
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Options & Model Numbers . . . . . . . . . . . . . . . . . . . . . 8
T/kda
T/ASCMUX
Fig. 2 - ASCII MUX Configures at the Front Panel Craft
Port
