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
3. Post-Installation Verification and Troubleshooting
a. Acceptance Criteria:
Because of the nature of microwave communications, and the effects on it from some of the transient
events listed earlier, it is normal to observe infrequent
gaps in remote views of Wireless waveforms.
The maximum number of waveform gaps allowed is three per minute, lasting less than 3 seconds each,
on a 16-waveform central where the Wireless bedsides are stationary.
During transport, it is expected that the number of dropouts will increase as the wireless monitor nears
the edge of the WNI coverage area and switches to a new WNI.
ALL monitor locations must meet or exceed the following minimums as measured with the RangeLAN2
card:
• The LINK QUALITY is displayed on the main site survey screen as a number from 0 (out of
range) to 5 (best) must be 3 or above.
• The RECEIVED SIGNAL STRENGTH (RSSI), displayed as a bar graph from 0-100% must be at
least 40%.
• In the Directed Link display ensure that the minimum DATA THROUGHPUT from the laptop to
the WNI, is at least 40 Kbytes/second.
b. Troubleshooting with the RangeLAN2
.
Once the wireless network is installed, you may use the RangeLAN2 utility to test the installation and
verify system performance.
With the WNI’s in their installed locations, verify each bedside location has minimum throughput of 40
KB/second and a Link Quality of at least 3. Verify throughput and quality for any WNI that can be seen
from any given room.
Wireless bedside software version 2.03.06 and beyond will display the radio card’s network address as
the Wireless bedside software signs on after power-up. Knowing this information is useful in trouble-
shooting Wireless bedsides with radio problems. If the received signal strength (RSSI) of a Ranger,
1030/1050 wireless, or wireless UCW is significantly lower than RSSI for other bedsides, or data
throughput is low compared to other radios on the air, you can suspect a problem with the radio PCBA,
the antenna or antenna cable, or the monitor’s internal antenna cable.
One feature of the RangeLAN2 program is the master list (see illustration below). The master list will
show all masters in a given area. To search for Spacelabs WNI’s, search Network Domain One. To
search for other Proxim Masters, (non-Spacelabs equipment), search all Network Domains.
Part Number 062-0983-01 Rev C page 3 - 24