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NexLog Recorder User Manual v2.2.0
Figure 37
—Packet Capture
From the Configuration Manager, clicking Export Capture File will prompt you
to save the capture as a file. When using packet capture from the front panel,
Export Capture File will ask for an archive drive to write to.
4.6. SETUP: Recording
4.6.1. Boards and Channels
The Boards and Channels Setup page is where you configure the loggers
recording functionality. Because of the real-time nature of recording, and the
large number of editable parameters (A recorder could have over 200 channels
installed each with dozens of configurable parameters), special care has been
taken to streamline the workflow of editing boards and channel configuration.
Hence, this page does not follow the same convention that most of the other
pages follow. The primary difference is that instead of editing settings and then
having to click a ‘Save’ button to take effect, when you are on the main boards
and channels page, edits take effect live. Trying to adjust gain one decibel at a
time while viewing the results on a level meter, for example, would not be
possible without a live environment as it would take countless tweak , submit,
check cycles. Note that even if your Web browser does not support the dynamic
nature of editing directly on the live page, you will still be able to edit channels
using the 'Edit Channel' page for making changes.
A Board on a NexLog recorder is another name for "Recording Interface". The
term comes because most Recording interfaces are exactly that, PCI Boards
installed in the recorder, but there are also "Virtual Boards" such as VoIP
Boards which are not physical boards in the system. Each board has its own
configuration settings, and one or more channels that exist on that board. For
example, an Analog board with connections for 16 analog channels (2 wires per
channel) would be considered a "16 Channel Analog Board". Physical boards are
constrained to a certain channel capacity via hardware. To change an 8 Channel
Digital board to a 24 Channel Digital board requires physically removing the
board and purchasing and installing a new one. Virtual Boards can often have
their channel capacity expanded simply by purchasing a license and
reconfiguring them, provided the recorder has enough capacity to handle the
additional channel load.