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3.5 FIREBERD 4000 SELF-LOOP TEST
The RS-449/530/MIL Data Interface includes a relay that
is activated by the SELF LOOP pushbutton switch on the
FIREBERD front panel. Pressing the SELF LOOP pushbutton
connects the transmit clock and data to the receive clock and
data. This provides quick verification of the FIREBERD and
the data interface. User connections do not need to be
removed during the test, since complete isolation is provided
by the relay when testing in the Self-Loop mode.
3.6 INTERFACE STATUS INDICATORS
AND SWITCHES
Depending on the EMULATE selection (DTE or DCE)
the corresponding front panel interface status and control
panel label will illuminate. The LEDs to the right of these
labels indicate activity on the associated interface connector
lines. The following describes what each LED indicates. The
DTE and DCE emulation labels not in parentheses indicate
EIA 530/MIL-188C lead notation and the labels in parenthe-
ses indicate RS-449/MIL188-114 lead notation.
Switches
RLSD (RR) -
In DCE emulation the pushbutton switch
controls the state of the Received Line Signal Detector
line. Pressing the RLDS pushbutton causes it to illumi-
nate, forcing this line ON. When the pushbutton LED is
extinguished, the line is held OFF.
DSR (DM) -
In DCE emulation, pressing the correspond-
ing pushbutton illuminates the LED and forces the DSR
line ON. Pressing this pushbutton again extinguishes the
LED and the DSR line is held OFF.
RTS -
In DTE emulation, pressing the Request To Send
pushbutton illuminates the LED and forces this line ON.
Pressing this pushbutton again extinguishes the LED and
holds the line OFF.
DTR -
In DTE emulation, pressing this pushbutton illumi-
nates the LED and forces the Data Terminal Ready line
ON.
Indicators
RLSD -
In DTE emulation, the Received Line Signal
Detector illuminates when this line is ON.
DSR -
In DTE emulation, the Data Set Ready LED
illuminates when this line is ON.
CTS -
In DTE emulation, the Clear To Send LED illumi-
nates when this line is ON. In DCE emulation, there is no
corresponding LED.
RTS -
In DCE emulation, the Request To Send LED
illuminates when this line is ON.
DTR -
In DCE emulation, the LED illuminates when this
line is ON.
TM -
In DTE emulation, the Test Mode LED illuminates
when this line is ON. In DCE emulation, there is no
corresponding LED.
LL -
In DCE emulation, the Local Loopback LED illumi-
nates when this line is ON. In DTE emulation, there is no
corresponding LED.
RL -
In DCE emulation, the Remote Loopback LED
illuminates when this line is ON. In DTE emulation, there
is no corresponding LED.
3.7 FIREBERD 4000 PRINTER OPERATION
Refer to the FIREBERD 4000 Reference Manual for
printer setup and operating instructions. Figure 3-8 is a typical
Controls printout showing a RS-449/530/MIL Data Interface.
Figure 3-9 shows a typical Results printout with the RS-449/
530/MIL Data Interface.
NOTE:
Only the interface setting relevant to the current
interface mode are displayed.
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