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
The 90310-A is a Master WNI and contains one Network Interface and one Radio board; the 90310-B
WNI has two Network Interface and Radio boards, and functions as two separate Masters in a single WNI
housing. The 90310-C WNI is used as a slave interface for Spacelabs bedside monitors without internal
wireless network capability. This allows wireless connection of Spacelabs network patient monitoring
devices such as a UCW bedside monitor.
e. Technical Description Of Operation
The WNI uses a microprocessor located on
the 670-0829-xx (PCB ASSY, ETHERNET
INTERFACE, 90309) to handle all
communication between the network interface
circuitry and the OEM radio frequency card.
Software controls the 12.5 MHz main CPU,
the 25 MHz network CPU and the OEM RF
card. All Spacelabs Medical software resides
in a 2-megabyte PROM memory IC chip. The
software for the OEM RF card resides in a 32-
pin IC socket on the OEM RF card.
Master
The Master (always a 90310-A or B) functions
as a network interface. It can be thought of as basically a wireless ethernet multiport. Each master only
allows data traffic headed for wireless monitors that are in sync with that master to pass onto the wireless
network. Data traffic for monitors that are in sync with another master will be handled by that master. A
master also passes data from its wireless network onto the hardwire network. (See the table at the
bottom of the page and drawing above for jumper locations.)
Slave
A Slave (a 90310-C, 90309-W Ranger, or wireless Ultraview 1030/1050) passes all of its ethernet data
onto the wireless network. As mentioned earlier, it synchronizes with the frequency hopping pattern of
one master, and that determines which master receives its data. (See the table below and drawing above
for jumper locations.)
Jumper
Number
Jumper
Description
Factory Default for
“MASTER
CONFIGURATION”
(90310 A or B)
Jumper
Setting
Factory Default for “SLAVE
CONFIGURATION” (90309
W, or 90310-C)”
Jumper
Setting
JP580 MSTR/SLAVE MSTR (Master) 1-2 SLAVE 2-3
JP582 A (90310 A/B)
B (90310 C)
A (90310 A/B) 1-2 B (90310-C) 2-3
JP584 90309/90310 90310-A/B/C, Enables
10Base5 connector
2-3 90309, Disables 10Base5
connector
1-2
JP586 Diagnostic
NRML/LOOP
NRML, this is the
normal software
operating mode
1-2 NRML, this is the normal
software operating mode
1-2
Part Number 062-0983-01 Rev C page 3 - 5