User manual

B-10 Psion Teklogix 8515 Vehicle-Mount Computer User Manual
Appendix B: SCU for 802.11b/g Radio
Global
• Diagnostics: Attempts to connect or reconnect to an AP, and provides a more detailed
dump of data than if you used (Re)connect. The dump includes the radio state, profile
settings, global settings and BSSID list of APs. The SCU is saved to a file called
_sdc_diag.txt in the Windows directory.
B.1.5 Global
The Global settings tab allows you to define radio and security settings that apply to all pro-
files, along with settings that apply specifically to the SCU. The Global settings in Table B.2
can be edited in SCU.
Ta b l e B . 2 G l o b a l Ta b
Global Setting Description Value Default
Roam Trigger If RSSI from AP is less than roam
trigger value, radio performs roam scan
or probes for an AP with stronger
signal.
dBm: -50, -55, -60, -65,
-70, -75, Custom
-75
Roam Delta Amount by which second AP’s RSSI
must exceed the moving average RSSI
for the current AP before the radio will
attempt to roam to a second AP.
dBm: 5, 10, 15, 20, 25,
30, 35, Custom
10
Roam Period Following an association or roam scan
(with no roam), the number of seconds
the radio collects RSSI scan data before
considering roaming.
Seconds: 5, 10, 15, 20,
25, 30, 35, 40, 45, 50,
55, 60, Custom
10
BG Channel Set Defines the 2.4 GHz channels to be
scanned when the radio is set to roam
and needs to determine what APs are
available.
Full (all channels)
1, 6, 11
1, 7, 13
Custom
Full