LINKUP 5294 WITH DL5294 FIRMWARE
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4. Hardware Overview
This chapter discusses the LinkUp 5294’s hardware components and capabilities.
4.1 Front Panel
The front panel of the LinkUp 5294 is shown in Figure 4-1. Status indicators monitor power and RS-
232C line signals on the selected channel. Two user controls are provided for easy operation.
Figure 4-1. LinkUp 5294 Front Panel.
4.2 Front Panel Controls
Two front panel controls are provided on the LinkUp 5294: the CH SEL button and the RESET button.
Each of these controls is discussed below.
•
CH SEL (Channel Select) Button —
The CH SEL button is used to select the channel to be
monitored. When the button is pressed, the channel number increases. When held for a longer time,
the channel number is incremented at a faster rate. The channel being currently monitored is
indicated by the two-digit LED display.
If the channel number is incremented past the highest channel available in the unit, 88 appears in
the display and an LED integrity test is performed. All of the front panel lights are turned on to
ensure proper operation. Pressing the CH SEL button again terminates the LED test.
•
The RESET Button —
The RESET button is used to clear error codes from the front panel display.
Error codes are listed in of
Section 9.1
. When the first error occurs, pressing RESET clears the error
and channel status display resumes. If there is more than one error, the RESET button clears the
most recent error and displays the previous one. When all of the accumulated errors have been
displayed and cleared, the status lights resume their normal function. Once cleared, errors cannot be
redisplayed using the front panel. Therefore, you should write down any error codes that are
displayed before you press RESET.
ON
SYS OK DCE
DTE
TXD
RXD
RTS
CTS
DTR
DSR
CD
RI/SYN
TXC
RXC
I/O FLT
CHANNEL ERROR
CH SEL
RESET
DataLynx /5294
TM
