Motorola VC5090 用户手册
4 - 26 VC5090 Vehicle Computer Product Reference Guide
Figure 4-36 Signal Strength Window
After viewing the
Signal Strength
window, tap the back button to return to the
Wireless Status
window.
Table 4-20 Signal Strength Status
Field
Description
Signal
Displays the Relative Signal Strength Indicator (RSSI) of the signal transmitted between
the AP and vehicle computer. As long as the Signal Quality icon is green the AP
association is not jeopardized. If the icon is red (poor signal), an association with a
different AP could be warranted to improve the signal. The signal strength icon changes
depending on the signal strength.
the AP and vehicle computer. As long as the Signal Quality icon is green the AP
association is not jeopardized. If the icon is red (poor signal), an association with a
different AP could be warranted to improve the signal. The signal strength icon changes
depending on the signal strength.
Excellent Signal
Very Good Signal
Good Signal
Fair Signal
Poor Signal
Out of Range (no signal)
The radio card is off or there is a problem communicating with the radio card.
Very Good Signal
Good Signal
Fair Signal
Poor Signal
Out of Range (no signal)
The radio card is off or there is a problem communicating with the radio card.
Status
Indicates if the vehicle computer is associated with the AP.
Signal Quality
Displays a text format of the Signal icon.
Tx Retries
Displays a percentage of the number of data packets the vehicle computer retransmits.
The fewer transmit retries, the more efficient the wireless network is.
The fewer transmit retries, the more efficient the wireless network is.
Missed Beacons
Displays a percentage of the amount of beacons the vehicle computer missed. The
fewer transmit retries, the more efficient the wireless network is. Beacons are uniform
system packets broadcast by the AP to keep the network synchronized.
fewer transmit retries, the more efficient the wireless network is. Beacons are uniform
system packets broadcast by the AP to keep the network synchronized.
Signal Level
The AP signal level in decibels per milliwatt (dBm).
Noise Level
The background interference (noise) level in decibels per milliwatt (dBm).
SNR
The access point/vehicle computer Signal to Noise Ratio (SNR) of signal strength to
noise (interference) in decibels per milliwatt (dBm).
noise (interference) in decibels per milliwatt (dBm).
Association Count
Displays the number of APs the vehicle computer connects to while roaming.
AP MAC Address
Displays the MAC address of the AP to which the vehicle computer is connected.
Transmit Rate
Displays the current rate of the data transmission.