120 20170-204a
Paragon
PD
Technical Manual
14
3.2.1.1.2.3
RS-232 LED Function
Selection
The PF 1 button is used to select the RS-232
display mode as follows:
•
If pressed
ONCE
(do not hold pressed):
-
Clears Alarm indications
-
CK LED stops flashing for 2 seconds
-
During this time, one or all of the
RS-232 numbered LEDs (see Figure 13)
will light. If one LED lights, it denotes
the port to which the subsequent display
applies. If all numbered LEDs light, it
denotes that the normal 3-port display
mode is active.
The selected display remains active un-
til manually changed or until RESET is
pressed or until power up.
Table 4 - RS-232 LED Function Selection Sequence
RS-232 LED Function Selection Sequence
ALL
1
2
3
4 (reserved)
5 (reserved)
TX LED in RF group lights with any
and all transmission
ALL
1
2
3
4 (reserved)
5 (reserved)
TX LED in RF group only lights with
an ACK or DATA transmission
•
If, during the 2 seconds period that CK is
not flashing, PF 1 is pressed a second time,
the LED functions will advance one step
from top to bottom through the available
options in the order shown in Table 4.
•
PF 1 may be pressed repeatedly during the 2
second period (extended with each press) to
advance to the desired numbered LED
function option.
Once the desired RS-232 LED function is se-
lected, stop pressing PF1, allow the two-seconds
timer to run down. The BDLC
PD
returns to nor-
mal operation using the newly selected display.
3.2.1.2
LEDs and Indications
LEDs are used to indicate the operation status of
the BDLC
PD
. Although capable of displaying
three colors, only the green and red colors are
used for the BDLC
PD
.
They are grouped by their
function:
•
RF Group, displays radio channel status in
green
•
RS-232 Group, displays serial port status in
green except the TX LED that also uses red
•
ALARM Group, displays fault status in red
3.2.1.2.1
Radio Network Indicators
The Radio Network LEDs are useful when trou-
bleshooting as an indication of network activity.
It can help isolate transmission problems.
Figure 12 - RF indicators
CS
Carrier Sense - Steady light indicates
that an incoming radio data signal is
being detected by the DSP modem. CS
signal is not user-adjustable.
RX
Receive Data – Flashing light indicates
unit is internally receiving data from the
radio network.
TX
Transmitter ON – blinks green indicates
(depending on display mode selected):
•
That a data packet or ACK (packet
acknowledgment) is being trans-
mitted.
•
That an idle packet, data packet or
ACK is being sent.
Test transmis-
sion display is done in red.
3.2.1.2.2
RS-232 Port Indicators
The RS-232 LEDs normally indicate port activ-
ity on the port selected. See section 3.2.1.1.2.3
above for instructions for selecting display
mode.
CS RX TX
RF
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