POTSwap User Guide JA16-EVDO-UM
Page 11 Rev: P07 Date: 08/01/16
© Copyright 2016 Janus Remote Communications
Specifications subject to change without notice
All Rights Reserved See website for latest revision. Not intended for life support applications.
5 External Interfaces
5.1 Front Panel
Received Signal Strength Indicator
A stack of 4 green LED’s on the left side of the front panel indicate the relative signal strength of the cellular radio
signal. It is analogous to the ‘bars’ display on a cellular telephone handset.
RSSI INDICATOR
LED’s ILLIMINATED
SIGNAL STRENGTH
RSSI (dBm)
4
Excellent
-73 or better
3
Good
-83 to -74
2
OK
-93 to -84
1
Marginal
-109 to -94
If no signal is detected, the LED’s on the stack alternately illuminate from bottom to top and back in a ‘scanning’ manner.
GPS INDICATOR
The bottom (#1 ‘Marginal’) LED on the RSSI indicator will blink several times for 1 second every 10 seconds to
indicate a GPS location fix is available. This indication is independent of the cellular signal strength indication. See
section 7 - GPS.
LED Operational indicators
LED
LED COLOR
INDICATION
POWER
Red
Power status
CELLULAR
Yellow
Cellular radio status
STATUS
Green
System status
General status conditions can be inferred as follows:
Green and Yellow LED continuously ON: during initialization
(following the application of power or a manual RESET).
Yellow LED blinks every 2.5s – wireless registered on network.
Yellow LED ON - when cellular call connected.
Green LED fast blink - when on hook (no call in progress)
Green LED - ON when off hook (during call)
POWER (RED) LED
LED STATUS
INDICATION
ON
System is powered
OFF
System has no power
Blinking
System Fault
Figure 4 Front Panel
