BeneVision N1 - 3.4.2 Wi-Fi Signal Calibration; 3.4.3 Network Acceptance Process

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3.4.2 Wi-Fi Signal Calibration
Before using the wireless network survey tool (running on a laptop) to test the network coverage, use the patient
monitor to calibrate the RSSI of the tool as follows:
1. Keep the patient monitor close to the tool. The distance between the patient monitor and the tool is not greater
than 30 cm. The distance between the patient monitor and the human body is greater than 50 cm.
2. Move the patient monitor and the tool at the same time (keep the previous distance).
3. Record the RSSI values read by the tool when the patient monitor displays the following RSSI values: -50 dBm, -60
dBm, -70 dBm and -80 dBm.
4. Calibrate the RSSI of the tool relative to the patient monitor during site survey (the RSSI of the patient monitor is a
criterion for wireless coverage).
3.4.3 Network Acceptance Process
Network acceptance is divided into two parts: First, the IT department of the hospital completes required self-check
items as instructed in the network acceptance table. Then the service personnel or authorized party performs a field test
to confirm the remaining content and fills in the network acceptance table. Any failed item should be adjusted before
the patient monitor is installed.
During the test, enable the Wi-Fi network SSID broadcast to ensure that the Wi-Fi SSID can be scanned.
Table 3-2 Wireless network acceptance table
SN Item Requirements Verification Method Check Result
Wireless coverage requirements
1 Received signal
strength
indicator (RSSI)
≥ -65 dBm
The RSSI is the value displayed on
the patient monitor
The service personnel use the network survey tool
to carry out the test.
Ensure that all the expected coverage areas (such
as wards, corridors, toilets, staircases, and
elevators) are tested.
2 Co-channel
interference
-20 dB The service personnel use the network survey tool
to carry out the test.
Ensure that all the expected coverage areas (such
as wards, corridors, toilets, staircases, and
elevators) are tested.
3 Ping delay The average delay of the PC or
mobile phone using a normal Wi-
Fi module is less than 100
milliseconds, and the packet loss
rate is less than 1%.
Do as follows:
1. Connect the PC or mobile phone to the AP.
2. Connect another PC to the LAN port connected
to the central monitoring system.
3. Run the "ping –t –l 32 –w 1000 IPaddress-of -
cellphone" command for 10 minutes.
4. Press"Ctrl+C".
AP capacity requirements
1 AP capacity The number of expected devices
connected to an AP must be lower
The service personnel obtains the AP model from
the related hospital staff or directly observe it.