User Guide

PMP 450 Planning Guide Subscriber Module (SM)
pmp-0047 (December 2012)
1-11
SM diagnostic LEDs
The diagnostic LEDs report the following information about the status of the module. The SM LEDs provide
different status based on the mode of the SM. An SM in “operating” mode will register and pass traffic normally.
An SM in “aiming” mode will not register or pass traffic, but will display (via LED panel) the strength of received
radio signals (based on radio channel selected via Tools, Alignment).
The LED color helps you distinguish position of the LED. The LED color does not indicate any status.
Figure 8 SM diagnostic LEDs, viewed from unit front
SM LED Display LED Labels
LNK/5 ACT/4 GPS/3 SES/2 SYN/1 PWR
Table 5 SM diagnostic LED descriptions
Status information provided
LED Color
when
active
SM in
“Operating”
Mode
SM in “Aiming”
Mode
Notes
LNK/5 green
Ethernet link
These five LEDs act
as a bar graph to
indicate the relative
quality of alignment.
As power level
improves during
alignment, more of
these LEDs are lit.
Continuously lit when link is
present.
ACT/4 yellow
Presence of data activity
on the Ethernet link
Flashes during data transfer.
Frequency of flash is not a
diagnostic indication.
GPS/3 red Interference
On - high interference.
Blinking - medium interference.
Off - low interference.
SES/2 green
Strong Receive Signal
Power
Blinking from slow to full-on to
indicate strong power, getting
stronger.