Roche CoaguChek Pro II, Руководство оператора

Страница: 196 / 206

196
CoaguChek
®
Pro II · Operator’s Manual
to IEEE Standard 802.11 g (2.4 GHz range)
(16)
. The
system is backwards compatible to 802.11b. During
wireless communication to an Access Point (AP), the
CoaguChek Pro II meter recognizes the existent AP
WLAN protocol configuration (802.11b or 802.11g) and
automatically transmits data using the appropriate
communication protocol
(17)
.
The loss of signal or access to bandwidth of one
particular client may vary depending on one or more
of the following situations: the type and number of
other clients, the performance of the Access Point, the
presence of electromagnetic disturbances, and other
potential interfering factors, e.g., concrete walls.
The CoaguChek Pro II meter uses a burst‑like
communication protocol that will only consume
bandwidth if there is actually data to be transferred.
Compared to other applications, such as Voice over
Internet Protocol (VoIP) or multi‑media applications,
the meter’s bandwidth consumption is minimal. If the
WLAN that the CoaguChek Pro II meter seeks to
connect to is degraded, the meter design minimizes
the impact on functionality.
Technical implementation Prior to connecting any wireless device to a wireless
network, it is recommended that a WLAN site survey
be performed. The goal of a WLAN site survey is to
ensure that Access Points will provide enough
coverage and performance to support any new radio
frequency (RF) application or device. The survey will
also detail RF signals, including all existing WLANs
along with any competing RF signals and
interferences (building structure related and other
wireless equipment / devices).
(16)
While the CoaguChek Pro II system adheres to the 802.11g standard, it uses only channels 1‑11.
Channels 12‑14 are not used by the system.
(17)
WLANs are organized in cells. A typical WLAN cell consists of Access Point(s) that are connected to the
(wired) Local Area Network and one or more clients, e.g., CoaguChek Pro II meters along with other
clients such as portable computers.
14 Appendix C
• 14