Service manual

Ultraview 1030/1050 Monitors — Service Manual
3-2
DC Power Supply
The power supply is a self-contained device that converts AC power to +18 V for use by the
monitor. The monitor converts the +18 V into several other voltages internally. The power supply, if
it fails, is usually replaced as a single unit (P/N 119-0251-01).
Specifications:
Input: 120 VAC, 60 Hz, 2 A
Output: 18 VDC, 4.25 A
Parameter Module
Any one of the many Spacelabs Medical parameter modules can be plugged into the module port
on the Ultraview 90367/90369 Monitor.
The module receives +5 VDC, +12 VDC, and -12 VDC power from the monitor and communicates
with the monitor via an SDLC data bus. In the most general terms, the module initially downloads a
program (“table code”) into the monitor over the SDLC bus. This enables the monitor to interpret
messages from/to the module. The module sends events and data to the monitor, which typically
cause the monitor to display waveforms, softkeys, etc. The monitor also responds to key presses
of the softkeys, which causes various actions to occur such as changing the way data is displayed.
For more information on the SDLC data bus, refer to the CPU PCBA section.
The theory of operation of a particular module can be found in that module’s Service Manual.
Optional Capnography
The Capnography option is similar in design to other Spacelabs Medical modules, except it is
packaged as an extension of the I/O Bay Housing on the back of the monitor. It communicates to
the monitor in the same manner as other modules described above.