User guide

Configuring a Point-to-
Multipoint Link for Te
Testing the Components
210
pmp-0229 (Mar 2013)
PMP 400 Series OFDM SMs do not have this parameter. For historical relevance, the General
Status tab also shows the RSSI, the unitless measure of power. Use Power Level and ignore
RSSI. RSSI implies more accuracy and precision than is inherent in its measurement.
NOTE:
Unless the page is set to auto-refresh, the values displayed are from the instant
the General Status tab was selected. To keep a current view of the values,
refresh the browser screen or set to auto-refresh.
Air Delay
This field displays the distance in feet between this SM and the AP. To derive the distance in
meters, multiply the value of this parameter by 0.3048. Distances reported as less than 200 feet (61
meters) are unreliable.
Data Slots Down
This field indicates the number of frame slots that are designated for use by data traffic in the
downlink (sent from the AP to the SM). The AP calculates the number of data slots based on the
Max Range, Downlink Data, and (reserved) Control Slots configured by the operator. See Max
Range on Page 249 and Downlink Data on Page 250.
A + in this field (for example, 28+) indicates that there are additional bit times that the scheduler
can take advantage of for internal system communication, but not enough for a full data slot.
Data Slots Up
This field indicates the number of frame slots that are designated for use by data traffic in the
uplink (sent from the SM to the AP). The AP calculates the number of data slots based on the Max
Range, Downlink Data, and (reserved) Control Slots configured by the operator. See Max Range
on Page 249 and Downlink Data on Page 250.
A + in this field (for example, 9+) indicates that there are additional bit times that the scheduler
can take advantage of for control slots (which are half the size of data slots), but not enough for a
full data slot.
Control Slots
This field indicates the number of (reserved) control slots configured by the operator. Control slots
are half the size of data slots. The SM uses reserved control slots and unused data slots for
bandwidth requests. See Control Slots on Page 250.