User's Manual

EEG
24-9
DSA
The DSA sub-menu offers the following choices:
•SIZE
Use the up and down arrows to size the DSA. When you touch SIZE (after
processing has started), the display will show a histogram of the EEG data
(Histogram Display on page 24-18). As you touch the up and down arrows to
change size, you will notice that the histogram changes size.
Choose a histogram size which gives the best DSA contrast for your application.
• TIME BASE
Touch TIME BASE to choose the amount of time the X-axis display represents.
Touch either 5,10, 20, or 40 min to select a DSA screen time. The active key will
highlight.
• FREQUENCY RANGE
Touch the FREQUENCY RANGE key to choose the DSA frequency range. Touch
either 10Hz, 15Hz, 20Hz, or 30Hz. The active key will highlight.
• DSA TREND
Touch DSA TREND to choose the type of trend you wish to display on top of the
DSA. Choose either SEF, PPF, MPF, or TREND OFF. The active key will
highlight.
Analog
Touch the ANALOG key to show the sub-menu that allows you to set the SIZE of
the analog trace, and the SWEEP SPEED of the display. Use the arrow keys to
change the size. Touch the desired sweep speed to select.
!
• The trend time base will change to track the DSA time base.
To set the size of DSA:
1 Touch EEG.
2 Touch SETUP.
3 Touch DSA.
4 Touch SIZE.
5 Adjust size.
To set DSA time base:
1 Touch EEG.
2 Touch SETUP.
3 Touch DSA.
4 Touch TIME BASE.
5 Select time base.
To set DSA frequency range:
1 Touch EEG.
2 Touch SETUP.
3 Touch DSA.
4 Touch FREQUENCY RANGE.
5 Select frequency range.
To set DSA trend:
1 Touch EEG.
2 Touch SETUP.
3 Touch DSA.
4 Touch DSA TREND.
5 Select trend.
To display analog EEG:
1 Touch EEG.
2 Touch DISPLAY FORMAT.
3 Select DUAL FORMAT OFF.
4 Touch ANALOG.
To set the analog size:
1 Touch EEG.
2 Touch SETUP.
3 Touch ANALOG.
4 Select size
To select sweep speed:
1 Touch EEG.
2 Touch SETUP.
3 Touch ANALOG.
4 Select sweep speed.