IM4830B Rev B
14
October 9, 2019
4.0
Detailed operation
4.1.
Parameter editing
The editing function is the same process for all parameters with the exception of
Type
. From the home
screen, press either the left or right arrow keys to enter the editing screens. Using the up and down arrow
keys, move the cursor (inverted text) to the parameter to be edited, and select by pressing the
ENTER
key.
For example, selecting “Freq” will display the editing screen for frequency.
Figure 12: Frequency edit screen
Use the left and right arrow keys to place the edit cursor (
5
) at the point to edit, then use the up and down
arrow keys to adjust the value. If a value is entered that exceeds the limits for the simulator, an “
Out of
Range
” message will be displayed, and the value cannot be saved.
Figure 13: Out of range message
The waveform
Type
uses only the up and down arrow keys for editing. Select from sinusoidal, triangular or
square wave by using these keys
.
4.2.
Calculated parameters
4.2.1.
Relationships
Whenever the values of “freq” or” g level” are changed, the secondary parameters are
automatically recalculated. The secondary parameters, i.e. ips, m/s, mils and mm are calculated
using the following relationships:
ips = (g/f) * 61.447906; mils = (g/f
2
)*19559.47
m/s = (g/f) * 1.5607768; mm = (g/f
2
)*496.81
Note: These relationships are valid only for a sinusoidal waveform.
The value for m/s
2
is calculated using the constant 1g = 9.80665m/s
2
4.2.2.
Back calculation
The secondary parameter values can be edited in the same way as the primary parameters, i.e.
“Freq”, “Sens” and “g level”. As the simulator is simulating an accelerometer having an output as
a function of acceleration g, then any change in the value of a secondary parameter must affect the
