Figure 31. Antenna Alignment For Bridges - National Datacomm 9210S01 User Manual

Step 2: Set the parameters for testing
The calculation of the antenna alignment is conducted by the following procedure:
•
Bridge A sends a packet to Bridge B
•
When Bridge B successfully receives the packet from Bridge A, it will
automatically echo the packet back.
•
When Bridge A receives the packet echoed back by Bridge
calculate the throughput and can present it as PPS (packets per second)
and KBPS (kilobytes per second). The higher the throughput is, the better
alignment is achieved.
Since every installation is different (for example, the difference in distance,
temperature, humidity, and alignment angle) no standard reference can be given.
The user can specify the following parameters for each
•
Packet Length: Ranges from a minimum of 64 bytes to a maximum of
1514 bytes, as Ethernet does. The larger the packet size is, the higher the
error rate is likely to be.
•
Packet Count: The packet number to be sent during the test. The larger
the packet count is, the more time the test will take.
34

Figure 31. Antenna alignment for bridges

test:
11-Mbps Wireless Outdoor Bridge
B, it can