E Series Service Manual
4-4 9650-1450-01 Rev. D
Main System Board Functions
The Main System Board contains the major computing and control elements for the E Series unit. The printed wiring board assembly (PWBA) receives
signals from the front panel control switches, ECG input connectors and functional modules, such as the AC/DC charger, pacer/defibrillator modules,
stripchart recorder and PCMCIA card interfaces, and if applicable, the SpO
2
, EtCO
2
and NIBP modules. The Main System Board monitors and processes
these input signals to produce other signals that: 1) control the operation of other modules within the system; 2) drive the unit’s front panel display and
audio outputs and; 3) store data for retrieval via Summary Reports, PCMCIA cards and/ or a modem.
The electronic circuitry and software contained on the main system board performs the following major E Series functions:
1. Main CPU and memory.
2. ECG signal acquisition and processing for ECG leads including,
• A/D conversion.
• ECG signal filtering.
• QRS detection.
• Implanted pacemaker detection.
• Heart Rate counting.
• Shockable ECG rhythm analysis.
3. Data communications with and control over the SpO
2
, EtCO
2
and NIBP modules.
4. Control over and safety monitoring of pacer and defibrillator functions performed by the High Voltage module and Biphasic Bridge module.
5. Physiological alarm processing.
6. Control switch monitoring for the front panel, accessory connection monitoring and control over the system response to switch activation or accessory
connection to the E Series.
7. Format and updating of the front panel display.
8. Primary power supplies for the unit.
9. Audio output generation and control (e.g., alarms, voice prompts, warning tones).
10.Audio signal processing, data compression and storage of voice recording data.
11. Real time clock and other time keeping functions.
12.Summary Report, 12 Lead ECG Reports data storage.
13.Monitoring of battery status and control over Battery Charging functions performed by the AC or DC Charger PWBA.
14.Data transmission to and control over the System Interconnect PCB functions, including the stripchart recorder and the PCMCIA slot functions.
To Next Page
Loading...
Need help?
General
