User's Manual
Table Of Contents
- Volume III
- e. Technical Description Of Operation
- Fixed channel Mode
- Auto-select Channel Mode
- g. OEM radio card
- All three cards have a transmitting frequency range of 2.4 GHz to 2.4835 GHz with a transmitting power measured at the antenna of 100 milliwatts. The radio functions as a "frequency hopper" and by definition will "hop" between a preset range of frequenci
- h. Understanding Signal Interference
- Physical Obstructions and Communication Range
- RF Interference
- i. Coverage Area
- j. Possible Monitor & WNI Configurations
- k. Communication Limitations of the Wireless Network
- m. Installation Hardware
d. Performing a Wireless Site Survey:
Use the up-to-date floor plans for the coverage area with the coverage area desired by the hospital staff.
1. Find a boundary for the coverage area.
2. Place the WNI at the boundary of the coverage area. Mount the test antenna to the ceiling, which is
how it will be positioned in actual use - do NOT place it on a desk or table.
3. Place the survey laptop in the location that the typical bedside antenna would be.
4. Assure vertical antenna orientation for best signal strength.
5. Start the RL2SETUP site survey mode and establish a Directed Link to the WNI.
6. Walk the laptop away from the WNI to the point where the data throughput averages 40 KB/Sec.
7. Move the WNI to the location just identified, and plot the rest of the area, staying within the 40 KB/sec
boundary.
8. Repeat the process if necessary to provide full coverage of the desired area.
9. Document the site survey and complete the other pre-installation documentation.
When making measurements, be sure to close room and hallway doors in the area you are surveying.
Solid core or metal doors can severely attenuate an RF signal!
NOTE
: If your proposed installation has WNI’s that are on the same channel, it is necessary that the WNI
locations be out of range of each other. Refer to drawings in previous sections of this document for
additional details.
A Sample Survey.
Refer to the floor plan illustrated on the next page as an example. Using the steps previously outlined,
place the WNI in the room at the end of a hall (step 1). Take laptop computer to a point (step 2) down the
corridor where the data throughput of 40 KB/Sec is seen from the room. Move the WNI to that location
and map the rest of the area (step 3), using the minimum data rate of 40000 Bytes/Sec minimum AND a
minimum Link Quality of 3 to define the limits of the coverage area of the WNI.
Repeat the process at all three ends of the unit.
Part Number 062-0983-01 Rev C page 3 - 20