Service and troubleshooting
EST3 Installation and Service Manual 8.65
DSDC status
Introduction
The DSDC status function is used to determine the real-time
status of a Signature Data Circuit (SDC). This function is useful
in isolating and correcting faults on an SDC. The DSDC status
function is useful in conjunction with the download and DSDC
diagnostic functions.
Setting up the System Definition Utility program
In order to use the DSDC Status function, the computer running
the SDU program must be connected to the 3-SSDC(1). The
appropriate communication port must be connected to the
modular phone jack on the Signature controller module or on the
CPU module.
Com port and baud rate settings can be made directly from the
DSDC Status window. The default baud rate is 9600 baud.
Using DSDC status
To access the DSDC Status function, click Tools > Signature
Status.
Select the SDC to be monitored by using the Cabinet, SSDC, and
Loop drop down lists.
The Delay drop down box sets the interval at which the status
screens receives updated information from the Signature
controller module. The default value is 3 seconds. Increasing the
delay time permits the module to process more information
between reports to the SDU, thus decreasing the overall time it
takes to generate a full status report.
To start the DSDC Status function, click the Start Status Button.
Should the Confirm window appear after a short delay, the SDU
computer is not communicating with the 3-SSDC(1).
Verify the module address, download wiring, COM port, and
baud rate are set correctly and click the retry button. If
communications fail when connected to the module via the CPU,
try connecting directly to the modular phone jack on the
Signature controller module.
Displaying the current SDC status
Click the Current Status Tab at the bottom of the window to
display an annunciator panel showing the real-time status of the
connected SDC.
Refer to Table 8-39 to interpret the indicators.
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