Transport SR Series Installation Guide
5
Status Indicators
The status indicators operate as follows:
ON
Illuminates steady red when power is applied.
LAN 0, 1, 2, 3
Illuminate steady when there is a network connection to the
associated LAN port and flash when data is transmitted or
received.
W-WAN:
NET, SIM,
DAT
These indicators display the wireless WAN status as follows:
NET
– Illuminates green when a wireless network has been
detected.
SIM
– Illuminates green when a valid SIM card is installed in the
unit.
DAT
– Flashes green when data is being transmitted or received.
SIGNAL
The three indicators labelled SIGNAL illuminate to indicate the
wireless signal strength as follows:
None illuminated
< -113 dBm (effectively no signal)
1 LED illuminated
>= -112 dBm and <= -87dBm (weak)
2 LED‟s illuminated
>= -86dBm and <= -71dBm (medium)
3 LED‟s illuminated
>= -70dBm and <= -51dBm (strong)
PSTN:
OH, CD, DAT
On the Transport SR models with a PSTN interface, these
indicators operate as follows:
OH
– Illuminates green when the modem has gone off-hook.
CD
– Illuminates green when the unit has connected to a remote
modem and asserted the Carrier Detect signal at the serial port.
DAT
– flashes green when the unit has connected to a remote
modem and data is being transferred.
SERIAL:
0, 1
These indicators operate in one of two software configurable
modes:
Connection Mode: Illuminate steady if a terminal is connected to
the serial port and the DTR signal is on. Flash when data is
transmitted or received.
DTR Mode: Flash when data is transmitted or received only.
