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
When looking at the equipment in a wireless network, you must remember these capabilities and
limitations:
1. Each 90309-W PC Ranger can transmit either 1 or 2 waveforms at a time to a 90310 WNI.
2. Each UCW wireless or Ultraview 1030/1050 wireless can transmit from 1 to 5 waveforms at a time to a
90310.
3. A single 90310-A supports a maximum of 20 waveforms, and the 90310-B supports a maximum of 40
waveforms on two unique cells.
4. There are 15 unique radio channels. All 15 channels can co-exist in a cell at the same time.
Channel Assignment and WNI location: Upon powering up a Ranger, Ultraview 1030/1050 wireless, or
wireless UCW monitor, it will search for and synch to the first WNI (master) it sees. The WNI generates a
signal known as a “beacon" that tells the Ranger the master’s next frequency hop. Basically, the first WNI,
with sufficient signal strength that the wireless monitor sees is the WNI that the wireless monitor will
synch to. When it becomes necessary to use more than one WNI, the monitors and WNI’s need to have
two or more channel numbers set so that some of the monitors communicate with one WNI, and the
others communicate with the other. The WNI’s should be positioned to be sure that each monitor is
communicating with the closest WNI.
NOTE
: Keep in mind that the closest WNI will not necessarily be the one the wireless monitor attaches to.
If signal strength and quality are acceptable from a more distant WNI, and it is the first one seen as the
wireless monitor searches for a Master to synch with, then the wireless monitor will synch with the more
distant WNI even though the closer WNI has more signal strength or better signal quality.
The number of monitors is based on the customer's order. Since this is not under your control, you need
to calculate how many waveforms will potentially be active in the coverage area. You must also account
for any monitors that are likely to roam through this cell (monitors on roll stands, etc.). Based on the
numbers above, the maximum number of wireless monitors is calculated as follows:
EXAMPLE 1
:
The proposed coverage area has 6 rooms with one 90309 wireless monitor in each room. Six monitors
sending two waveforms each will result in a total of 12 waveforms. This is less than the limit of 20
waveforms maximum for a 90310-A, so this area will only require a single 90310-A.
EXAMPLE 2
:
The proposed coverage area has 6 rooms with one Ultraview 1030/1050 wireless monitor in each room.
Six monitors sending five waveforms each will result in a total of 30 waveforms. This exceeds the limit of
20 waveforms maximum for a 90310-A, so this area will require two 90310-A units or one 90310-B.
EXAMPLE 3:
The proposed coverage area has 10 rooms with one Ultraview 1030/1050 wireless monitor in each room.
Ten monitors sending five waveforms each will result in a total of 40 waveforms. This exceeds the limit of
40 waveforms maximum for a 90310-B, so this area will require a 90310-B and an additional 90310-A, or
three 90310-A units.
Part Number 062-0983-01 Rev C page 3 - 13