SD32+
System
Introduction
17
3.4. LCD display
The LCD screen allows the user to assess the patient hook-up without having to view signals in
the control room.
The
Sandman Elite
software controls the LCD screen and determines the information that it will
display. With the exception of the impedance check, the LCD display does not control any of the
amplifier’s functions.
The screen initially appears blank, but lights up and displays information when you press one of
the Menu Control Keys (see
Figure 6. SD32+ amplifier’s external connections (front)
for the location
of these buttons). The display then indicates the amplifier’s “ON” status and the result of the
internal auto test after powering up. The screen powers down again twenty seconds after the last
button is pressed.
After a montage in the
Sandman Elite
software has been selected, the LCD screen provides the
following menu options: Impedance Check, Montage Setup, Digital Display, and Channel
Display.
The LCD’s Menu Control Keys allow users to select different menu options and thereby choose
the information that will be displayed. Once the screen is activated, the Menu Control Keys
function as follows.
The up
S
and down
T
buttons allow users to select an option from the main menu. An arrow
along the left side of the screen points to the various options. Press the
Enter
button to select an
option.
The left
W
and right
X
buttons allow users to scroll through the displayed information. For
example, during Channel Display, use the right button to skip to the next channel in the montage.
Use the left button to go back to the previous channel viewed. Press the
Enter
button to return to
the main menu at any time.
impedance check menu option
This menu option sets the amplifier in impedance check mode and displays the channel number,
name, and impedance value in kOhms (k
Ω
) on the LCD screen. Scroll through the channels using
the up
S
and down
T
buttons. Press the
Enter
button to stop the impedance check at any time.
Note: If the LCD screen has dimmed accurate impedance values will no longer be read.
montage setup menu option
This option allows users to verify channel connections while connecting electrodes. The LCD
screen displays the amplifier connector ID and channel name. The information is updated each
time the menu control button is pressed.
digital display menu option
This option allows users to navigate through the DC channels and verify their current signal
value. Digital Display works with the following channel types: SpO
2
, Pulse, Body Position,
CPAP, Bi-Level, pH, EtCO
2
, EtO
2
, NPT, TcpO
2
, TcpCO
2
, PES, Pulse Amplitude, Pleth, and Other.
The
Sandman Elite
software updates the LCD screen every second by sending it the channel ID,
name, and current value.
