Medoc PATHWAY - System Status; System States

Pathway Technical Reference Manual
Proprietary 31 of 190
Term
Description
TTL
An output or input, short and square signal which is commonly used to
synchronize between different devices.
Event
A specific occurrence during a test such as the onset of a stimulus,
reaching a specific temperature and etc.
LUT
A Look Up Table (LUT) maps one set of values to another. A LUT is used
to map between the readings from the temperature sensors to the actual
temperature it represents.
Emergency Button
The Emergency (or Panic) button is used to stop the stimulation in case of
an emergency or any irregular system behavior during a test.
Firmware
The program embedded on the internal processor of the system
2.6 System Status
 Online: This is the PATHWAY system full operating mode and indicates full
communication between MEDOC Main Station and Pathway System. While on-line
the PATHWAY system can operate in several different states as listed in the following
section.
 Simulator: The system is operating in demo mode. There is no communication
between the software and the PATHWAY system. All tests performed while working
in this mode are simulated. No actual thermal stimulation is performed and there is
no access to the PATHWAY hardware settings. The Simulator is useful for
demonstration, training and for protocol design without executing actual thermal
stimulation. It is recommended to turn off the PATHWAY system while working in
Simulator mode.
2.7 System States
System State is the active state in which the system is currently operating. System states
refer to the online status only.
The PATHWAY active states are as follows:
 Rest Mode: The PATHWAY system is active and ready to perform a test. The
temperature is maintained at the specified Rest Mode temperature (programmable).
The default value (after anew installation) is 32°C. In this mode patient, program
and result management are possible.
 Test Run: The PATHWAY system is running a (predefined) test. The Thermode is
active, and the temperature varies according to the active program.
 Safe Mode: No power output is delivered to the Thermode and no test can be
activated. The system must perform a Self-Test before resuming normal operation.
 Engineering: During Thermode Calibration the system state is set to Engineering
Mode. In this state safety limitations are lowered and running any actual test is not
allowed.
 Test Initiation: The system raises the temperature from Rest Mode temperature to
Baseline level. A stabilization test is then performed, to make sure that the
temperature is maintained according to the program requirements.
 Self-Test: The system performs a Self-Test in order to check whether the connected
Thermodes function according to system requirements.
 Black Box: The system has detected an error and is currently logging data in the
internal memory. The log file can be exported later for service use.