User's Manual

Document : CS-SUP-MUTI-WPORTAPP-E02.sxw
3.2.7 - Reading the RSSI level (Received Signal Strengh Indicator)
The RSSI level represent the QOS level (Quality Of Service) from a given module. This value can be used to
verify the quality of the signals forwarding on the network.
It is possible to take this measurement on a distant module, or the local module. The following examples
illustrate the types of measurements being able to be carried out.
Example 1 : Reading of RSSI, in Point-to-point mode.
REQ_READ_REMOTE_RSSI : request the RSSI level of the signal 1. (i.e. the RSSI level on signal 1
reception by the distant equipment)
REQ_READ_LOCAL_RSSI : request the RSSI level of the signal 2. (i.e. the RSSI level on signal 2
reception by the local equipment)
Example 2 : Request of reading of RSSI level on a distant module, in relaying mode.
REQ_READ_REMOTE_RSSI : request the RSSI level of the signal 1.
Therefore, to know the RSSI level between the repeaters, it will be necessary to make a request
REQ_READ_REMOTE_RSSI on each repeater.
a) Commands
CMD NAME DESCRIPTION
0x68 REQ_READ_REMOTE_RSSI request to read RSSI level from remote equipment.
0x69 RES_READ_REMOTE_RSSI Response to the read remote RSSI level request.
0x6A REQ_READ_LOCAL_RSSI
request to read the Wavecard RSSI level on an exchange with a
distant equipment.
0x6B RES_READ_LOCAL_RSSI Response to the read local RSSI level request.
Remark : In the command byte coding, the Response frame type are taking the Request command byte value
with the LSB bit set to 1.
WaveCard user handbook page 30 of 67
LOCAL
DISTANT
2
1
LOCAL
DISTANT
1