Measurement Computing WavePort rev.3.0 - Manual (Page 61)

WavePort User’s Manual 09-29-00 WaveView 6-9
System
Select Device Brings up a dialog box that lets you select a WaveBook device. It also provides access to
the Simulated Device, which is listed as an option.
Options Brings up the WaveView System Options dialog box. From there, you can enable or disable
WaveView options. The Performance and Memory Module options are described below.
WBK16 Sensor
Calibration
(WBK16 Only)
This command runs the sensor calibration program. Selecting this option will temporarily
disable WaveView and open a sensor calibration spreadsheet so that each channel on a
WBK16 can be calibrated to the specifications of the sensor in use.
Note: This selection is available if WaveView detects a WBK16 module.
WBK16 Advanced
Features
(WBK16 Only)
This command brings up a dialog box to select new cutoff frequencies for the LPF on a
WBK16. The WBK16 has a Low Pass Filter with two selectable cutoff frequencies.
Although the frequencies are factory configured at 10 Hz and 1 kHz, changing the resistor
packs inside the WBK16 can modify them. After the cutoff frequencies are altered, the
values that WaveView displays can then be modified to match the LPF frequencies using
this command.
Note: This selection is available if WaveView detects a WBK16 module.
Performance
•
Acquisition Data Packing:
The Data Packing option does not apply to
WavePort and is disabled.
• Calibration:
WavePort should only be calibrated at
the factory, or by a factory-authorized
service representative.
Leave the Calibration Radio Button
selected to Factory Calibration Table
(see figure at right). The Calibration section
of Chapter 9, Maintenance, Service, and
Part Replacement, contains additional
information.
•
Acquisition Buffer Size:
Allows you to set a new buffer size for data
acquisition. The dialog displays the maximum size
of the acquisition buffer. The buffer is never sized
larger than needed by the acquisition. For a one-
channel, 1000 scan acquisition the buffer will be
2000 bytes, not the size shown in the dialog.
Memory Module
Note: The WaveView System Memory Module
Option settings are only pertinent if a WBK30
Memory module option card is installed in your
WavePort or WaveBook.
• Pre-Trigger Mode: This allows you to use the full
bandwidth of your instrument regardless of the
computer's data transfer speed. Note that when
Pre-Trigger is in effect, certain conditions apply: (1)
The entire acquisition must fit in the WBK30's
internal memory, (2) The scan count will not update
during acquisition, and (3) The Pre-Trigger Mode
selection only applies if pre-trigger is used.
• Overflow Protection: This preserves and transfers
all data in the instrument when an acquisition ends
early due to an error or manual disarm. This option
should not be used if you: (1) Never want to save
data from an incomplete acquisition, or (2) You want
the option to work like it does without a WBK30
installed.