User's Manual

masters to communicate with the moving slave even though their channels don't match. The Wireless
bedside would look for masters on another channel when it looses synchronization with its current
master.
In either case, as the Wireless bedside approaches the boundary of the cell, and looses synch, a brief
period of signal dropout is experienced at remote monitors until the Wireless bedside establishes synch
with the new master. Generally speaking, the auto channel select mode allows quicker roaming since the
cells of different channels may overlap more than WNI’s on the same channel.
j. Possible Monitor & WNI Configurations
There are different network configurations available for use with the Wireless network product. Selecting
a configuration depends on several factors. These factors include the number of monitors to be used on
the network, the coverage area needed, and the intended usage of the monitors - mobile or stationary.
Basic Network Types
Simple network (no roaming):
Less than ten monitors in a single area with no roaming desired.
Suggested configuration: Use Wireless bedsides in fixed channel mode.
Simple network with roaming: Less than ten monitors with transport capability
Suggested configuration: Use Wireless bedsides in auto-channel select mode. Position WNI’s as
needed to cover all areas in the transport corridor.
Large network (no roaming): More than ten monitors in single area, no roaming
Suggested configuration: Use Wireless bedsides in fixed channel mode (maximum 10/WNI).
Configure WNI Channels to balance load (i.e. 16 monitors = 8/WNI
where cell boundaries permit). NOTE
: This configuration is not
suggested if the WNI’s can see each other.
Large Network with roaming: More than ten monitors with transport capability.
Suggested configuration: It is preferable to use Auto Channel Select mode with the WNI’s carefully
positioned to observe the 10 slave/WNI requirement by ensuring that cell
boundaries cover bed locations and transport corridors.
Hospital-Wide networks:
Coverage of multiple units or floors, with or without transport capability
Suggested configuration: It is preferable to use Auto Channel Select mode with the WNI’s carefully
positioned to observe the 10 slave/WNI requirement by ensuring that cell
boundaries cover bed locations and transport corridors.
k. Communication Limitations of the Wireless Network
Network traffic
The network must be configured to assure that a single WNI will not be overloaded. Therefore, if using
UCW or Ultraview 1030/1050 monitors you must assure that there are sufficient WNI’s to handle loads
based on the number of waveforms being transmitted by the wireless monitors.
One WNI is limited to a maximum of 20 waveforms at a time. If this parameter is exceeded, unacceptable
numbers of waveform dropouts will occur.
The first step in planning a wireless network installation is to know the number and type of wireless
monitors that will be used in the intended coverage area.
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