Figure 12 shows the program window with the settings for eight modules. The eight channels of
the addressed rack case are listed in rows. In the column
Input
you can select the input type. The
types Charge, IEPE and Voltage are available. Under
Gain
the amplification is set for each mod-
ule. The gain can be 0.1 (only for charge), 1, 10, 100 and 1000. Under
Integrator / Highpass
you can select acceleration from 0.1 or 3 Hz, velocity or displacement. Four
Lowpass
filters of
0.1, 1, 10 and 50 kHz are selectable. Transducer
Sensitivity
is entered as 4 digit number with
decimal point. The decimal point is mandatory. It must not be before the first digit. Valid exam-
ples are “0.123”, “1.234”, “12.34”, “123.4” or “1234.”.
Module name
is a 20 character text for
the identification of the channel. Only letters and numbers are allowed. Letters are converted
into upper case. Module names with less than 20 characters are filled with spaces on the left
side.
The settings are transferred to the M72 immediately after entering. Valid entries are confirmed
in the
Status
column by
OK
. Invalid entries are indicated as
ERROR
.
Please note that settings transferred via the digital interface are not stored in the non-volatile
memory of the M72 modules. This means that the M72 modules will be reset to the previous
condition which was set via the front panel if the power supply is interrupted. If you want to
keep your settings after switching off the device please click the button “Remanent Memory”.
This will store all settings in the non-volatile memory of the M72 modules.
The program also indicates type and version of the plugged in modules.
Click
Key Lock
to disable the front panel keys of all modules. The button becomes yellow when
the keys are locked. The key lock can be released by clicking the button again or by switching
the power supply off and on.
To save the entered settings to a file click
Save Settings
. Select a folder and enter a file name.
The program will automatically append the extension “.xml”.
You can reload the saved settings by clicking
Load Settings
. Select the “.xml” file and click OK.
The loaded settings will be transferred to the M72 modules immediately.
The program is based on LabView 2014. Metra provides the source code on demand.
19
Figure 12: Program window with loaded settings