User's Manual

ITC2100-NA Operation and Service Manual Version 1.0
© SWISSPHONE Wireless AG
Page 109 of 129
LED type
Description
Green LED (Power) lights
The RC card is being powered.
Orange LED (Receive) lights
The receiver detects a sync word from the air.
Red LED (Status) lights
A status of the receiver is not OK (i.e.PLL not locked).
Orange LED (RSSI +) lights
If this LED lights, the receive field strength is OK, i.e.
good to very good. If this value drops to a critical level,
both RSSI LEDs light. The base station is still, admitted-
ly, receiving correctly but the receiving equipment should
be checked
Red LED (RSSI -) lights
If only this red LED lights, the receive field strength has
dropped to an unacceptable level.
Orange LED (Master) lights
The base station is set as master.
Table 5: Functional descriptoin of the RC card LEDs
The LEDs for RSSI measurement (RSSI +, RSSI -) light in the case of a reboot only after
reception of a broadcast message.
The field strength of a received message should be higher than –90dBm at the antenna
connector. This is necessary to ensure that there is sufficient margin (min 20dB) over the
transmission path. The value can be seen in the status page of the web-interface by click-
ing the link "Receiver (RX)".
Receive field strength
LED "RSSI +"
LED "RSSI -"
Good
> -90dBm
On
Off
Critical
-90dBm .. -100dBm
On
On
Bad
< -100dBm
Off
On
Table 6: Status indication RSSI-LED's