10
Once the PC has connection to the remote site, the rest of the download
process is the same as if the SLM was connected to your PC via the
AO1386 cable.
Wireless Modem
Using a GSM dataphone, your field system becomes truly mobile and
wireless — no power line and no phone line is required. There is an
extra team player in the communication chain: the GSM network oper-
ator. But once you have got the settings right, it works as smoothly as
the data transfer via normal telephone lines.
This section shows how to capture sound measurements from a remote
sound level analyzer (Investigator Type 2260) via GSM transmission in
the field and standard telephone lines and modems at the home-base.
(Precision Integrating Sound Level Meter Type 2236 may also be used).
The field equipment is illustrated in Fig.5.
Fig.5 Field equipment shown with wire-
less modem. The antenna must be
placed to the right in the foam insert,
before the lid is closed
Field Equipment
Fig.6 shows the complete system including the home-base modem.
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