Wavenet Technology Pty Ltd. BM2900D Benutzerhandbuch

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Boomer II User Manual & Integrator’s Guide ____________________________________________ Integrator’s Task 
BM210012WT37 
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Copyright Wavenet Technology © November 2003 
support for packet headers, the number of active users on a shared RF 
channel can directly affect network throughput. 
Define a Service Strategy 
The service strategy determines whether the integrated modem is the 
cause of a user’s problem and sets a policy for keeping the end user 
operational during repair. The service strategy must consider all 
potential service situations and evaluate them in light of the usage 
model.  
To ensure that a final product can be efficiently serviced, you must 
design for service-ability early in the development process. At a 
minimum, you must develop a functional service strategy that contains 
a well-considered procedure for performing unit-level screening. The 
test must primarily determine whether a fault lies with the modem or 
with the product. The test must also screen for network problems and 
human error. 
Wavenet provides an evaluation board (a standalone test jig) and 
various software test utilities. The evaluation board provides a 
mounting platform and electrical interface to the modem. Testing is 
performed much more efficiently while the modem is still integrated 
within the host/terminal, whether for a factory end-of-line test or while 
at the user’s site. 
For your product to allow integrated testing of the modem, you are 
required to provide modem pass-through mode and utilise Wavenet 
Commander software. See “End User Problem Resolution” on page 76. 
Without pass-through, the modem must be mounted on the evaluation 
board for diagnostics and troubleshooting. Pass-through mode also 
allows for modem software upgrades. 
A thoroughly developed OEM serviceability plan typically includes a 
needs assessment for developing software utilities that can assist in 
identifying communication problems between the host/terminal and the 
modem and between the modem and the RF network. 
These utilities must be able to send commands to the modem, evaluate 
the modem responses, perform network connectivity testing, and verify 
data communication with the network. 
The utilities can be developed using NCL. This link-layer protocol set 
provides the capability to monitor and evaluate the modem’s operating 
condition and all communications to and from the network Enterprise 
Server Application. NCL 1.2 uses a command-response functional 
model. First, the network Enterprise Server Application asks for 
modem status and status of network connectivity. 
The modem then responds with its status and the state of network 
connection management. 
Such a software utility is essential for field service engineers and shop 
technicians to diagnose problems with the product and to troubleshoot 
a problem to a failed assembly or mismanaged communication link.