Communications
Analysis
of irregularities in phone lines
To cope with customers with analog lines
complaining that they fail to connect to a dialed party, the following
can be performed. Recording and retaining the correct dial waveform
for each dial number in advance makes it possible to distinguish a
dial by comparing it with these retained waveforms.
In the case of dedicated lines, if the normal audio level exceeds
a certain value, the call will be interrupted after the condition
has continued for a certain time.
When complaints that calls are interrupted inappropriately are received,
the MEMORY HiCORDER can be used to measure and record the level during
calls. When the signal exceeding the specified
time interval and level has been recorded by this measurement, it
is possible to identify the cause of the problem, e.g., excessive
ambient noise, etc. |
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Test
of charge retention of new types of high- performance batteries
Currently, alkaline manganese batteries
are widely used as primary batteries, lithium-ion, nickel-hydrogen
and high-performance NiCd batteries as secondary batteries in the
power supply for portable devices. These batteries are gradually replacing
other standard types of batteries and finding application in new fields
as they are becoming
cheaper and offer longer operating time. It is necessary to conduct
battery life tests, charge retention tests and operating time tests
of these batteries for each of the different portable devices in which
they are employed.
Using a MEMORY HiCORDER makes it a simple procedure to record the
changes in voltage over a long period. By using a wave processor and
utility disks the data can be converted to data compatible with spreadsheet
software, allowing graphic processing.
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