GE S5 Service Manual

							Service Menu
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                                          Document no. M1031519-01
Service Data 
Sensor ADULT/PEDIATRIC according to the selected measurement mode (sensor). 
Insp/Exp Flow Gains shown apply to the selected sensor.
Aw Press Zero and Flow Zero are the result of zeroing in the user service menu. They can be adjusted in the factory 
calibration menu, but not permanently stored.
Aw Press Gain is directly the value used in sw. It can be adjusted, but not permanently stored.
Exp Flow and Insp Flow Gains are scaled as (User gain)/(Factory gain). Exp and Insp Flow Gains can be adjusted also 
in the user service menu.
Common Offset is the compensation factor for pressure difference reading of the difference sensor when applying an 
equal pressure on both sides of the sensor.
Valves can be changed between MEASUREMENT and ZEROING. 
Zeroing automatic zeroing either ENABLED or DISABLED (only factory service menu).
Aw Pressure shows the real time value of airway pressure.
Condition shows in which reference conditions the results are. With calibration pump or spirometry tester, the results 
are always in ATP. If breathing is detected (EtCO
2 > 1.0%), the results are according to the Flow & Vol Setup selection.
Flow shows the flow measurement value.
 
TVol Exp, TVol Insp, MVol Exp and MVol Insp are shown to ease calibration. The numbers are the same as on the main 
display. The former pump calibration procedure has been dropped out. We claim that calibration is not needed in 
routine clinical use, so a separate Flow calibration menu is not needed. Calibration can be done with the pump or 
spirometry tester. The results must be taken from the screen and gains adjusted accordingly.
VCO
2 and VO2 Gain show a value near 1000, the correct gains have been measured in the factory.
Y deadspace is the geometric volume in ml between the Y-piece and the D-lite. Default is 5 ml for a standard Y-piece 
(as delivered with Siemens 900C ventilators). Used for VCO
2 and VO2 delay time corrections.
Set N
2 injection to 1 during laboratory tests with a Spirometry tester and injection of N2 gas (for scientific validations 
use only). At power on of the module, the value is always zero.
Ambient pressure value measured by the module. 
						

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Document no. M1031519-01                                                                           
4.2 ECG Module
Power freq: Set power frequency; 50 Hz/60 Hz.
Filter low
: Set filter low frequency; 0.05 Hz/0.5 Hz.
Filter high: Set filter high frequency; 30 Hz (40 Hz if power 
freq is 60 Hz) /100 Hz or 150 Hz @ NE12STPR.
Service Data
Power freq, and Cable type show the values chosen or 
detected, Filter low and high defines the selected filter 
(Monitor/Diagnostic/ST).
Quick zero at PRESTN series module is ON when the ECG 
signal is beyond the scale, and therefore, is quickly 
returned to optimal range using fast signal processing 
methods. All the Quick zero bits are ON at the same time.
Cable shows ON when ECG cable is connected.
Electrode shows ON when each of these electrodes are 
connected.
Pacer count is a running number for pacemaker users.
Button No effect on the module.
Resp Available indicates that ECG hardware is capable of measuring impedance respiration. 
Measurement shows ON when the respiration measurement is on.
Amp zero shows ON when zeroing of the respiration amplifier takes place.
Waveform VALUE will be updated in one second interval.
Timeouts is a cumulative number that indicates how many times the module has not responded to the monitor’s 
inquiry. 
Bad checksums is a cumulative number that indicates how many times communication from the module to the 
monitor has broken down. 
Bad c-s by mod is a cumulative number that indicates how many communication errors the module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The values may also be reset when
 
a module is attached to the monitor frame and be set to 32769 or continuous counting may be started when the 
module is removed from the monitor frame. 
The nonzero values do not indicate a failure, but the continuous counting (more than 5 per second) or value 32769 
indicates either a serial communication failure or a module not in place. Also failures in other modules may cause these
 
numbers to rise or be set to 32769.
RAM indicates the state of the RAM memory. 
ROM indicates whether the checksum at the EPROM is in accordance with the one the software has calculated. 
EEPROM indicates if the values stored in the permanent memory are valid.
The state is either OK, Fail or ? (module not in place or a communication error). 
						

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                                          Document no. M1031519-01
4.2.1 ECG Setup
Filter filters the ECG signal high frequency noise and 
slow respiratory artefacts.
Monit (monitor) filter is used in routine monitoring. It 
effectively filters the artefacts caused by the 
electrosurgery unit and respiration. 
Diagn (diagnostic) filter is used if more accurate 
information of the waveform is needed (e.g. of P-wave or 
AV block). The diagnostic filter is more susceptible both 
to high frequencies and baseline wander than the 
monitor filter.
STfilt (ST filter) permits more accurate information of ST 
segment. It filters the high frequency artefacts caused by 
the electrosurgery unit, but catches the slow changes in 
ST segment. The ST filter is more susceptible to baseline 
wander than the monitor filter.
5-lead cable selects five or three electrodes. With the 
12-lead ECG the selection is automatic.
Pacemaker selects how to display the pacing pulse of cardiac pacemaker. The selections are Show, Hide, ON R and 
Sensit.
Hide, the pacing pulse is filtered away from ECG data.
Show, the pacer pulse is filtered away from ECG data but the pulse is displayed as a constant height marker.
ON R, pacing pulses are not filtered away from ECG data. This improves ECG monitoring with A-V pacemaker patients, 
as QRS complexes are counted even if the pacing pulse hits the QRS complex. However, during asystole the monitor 
may count pacing pulses as heart beats. 
Sensit selection uses a more sensitive pacemaker detection. Pacemaker spike is displayed on ECG. 
						

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Document no. M1031519-01                                                                           
4.3 ESTP Module
Service menu for the multiparameter hemodynamic 
module’s oxygen saturation, temperature and invasive 
pressure measurements.
NOTE: Pressure Module, M-P or E-P, and Pressure 
Temperature Module, M-PT or E-PT, have their own 
service menu; ”4.4 P/PT.” and so does Dual Pressure 
Module, M-PP or E-PP; ”4.5 PP.”  
Calibrations opens a submenu for temperature (T1, T2) 
and pressure (P1, P2) calibrations. See section 
“Calibrations”. 
Record Data prints out the shown service data and board 
information (id, serial number and sw id) onto the 
recorder module.
Temp Test activates the automatic temperature test for 
the temperature channels T1 and T2. The result from the 
test is shown in the service data field.
NOTE: The Temp Test needs to be selected twice before 
the test starts.
Service Data
Gain is a coefficient to compensate gain error. Usually the values for P1 and P2 are between 17000 and 25000 and 
for T1 and T2 between 13000 and 14300. 
Zero indicates the offset compensation value of each parameter in the A/D converter. Typically the values for P1 and 
P2 are within ±1000 and for T1 and T2 between -150 and +300. Calibrate if zero and/or gain value is outside the 
ranges.
Cable shows ON when a corresponding cable is connected to the front panel and Probe shows ON when a 
corresponding probe is connected to the cable.
Under Value, the measured numeric values are displayed simultaneously. Pressure values are real time values and 
shown in mmHg. Temperature values are shown in degrees Celsius.
The front panel STP keys functions are confirmed by pressing each key and observing that OFF turns to ON at Button.
SpO
2 shows the measured beat-to-beat SpO2 value.
Modpr is a modulation % that indicates the AC/DC ratio in the measured signal. 
Hr is a pulse rate calculated from every beat.
Cable and Probe can be either OFF or ON, and these indicate the state PROBE OFF. 
Under them there is a message field for SpO
2. It can be OK, PULSE SEARCH, NO PROBE, PROBE OFF, NO PULSE, 
ARTEFACT, POOR SIGNAL, or CHECK PROBE.  
						

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                                          Document no. M1031519-01
Balance between leds is adjusted by changing the intensity of red/infrared. Intensity of infrared (Ired int.) is in the 
range of 40 to 255 and red intensity (red int.) is in the range of 40 to 255.
DC gain shows the gain of DC signal adjusted by the module.
IDC is the value of infrared signal.
RDC is the dc value of red signal.
AC gain is the gain of infrared and red ac signals. AC gain values can be 1 or 0. Value 1 means high ac gain and 0 
means low gain.
Pre gain is a preamplifier gain for infrared and red signals. Pre gain values can be 1 or 0. Value 1 means normal 
operation. Value 0 means that signal levels are very low and extra gain is taken into use.
Temp error shows the status of the temperature test. No errors found show the status (OFF) and errors found (ON).
Protect key shows normally OFF, but turns to ON when the button at the bottom of the module is pressed.
Protect mode is normally ON. It turns to OFF, when Protect is switched to OFF for the temperature calibration in 
Calibration Menu.
Configuration shows the chosen module configuration: TP, ST, or STP.
Timeouts is a cumulative number that indicates how many times the module has not responded to the the monitor’s 
inquiry. 
Bad checksums is a cumulative number that indicates how many times communication from the module to the 
monitor has broken down. 
Bad c-s by mod is a cumulative number that indicates how many communication errors the module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The values may also be reset 
when a module is attached to the monitor frame and be set to 32769 or continuous counting may be started when 
the module is removed from the monitor frame. 
The nonzero values do not indicate a failure, but the continuous counting (more than 5 per second) or value 32769 
indicates either a serial communication failure or a module not in place. Also failures in other modules may cause 
these numbers to rise or be set to 32769.
RAM indicates the state of the RAM memory.
ROM indicates whether the checksum at the EPROM is in accordance with the one the software has calculated. 
EEPROM indicates if the values stored in the permanent memory are valid. 
The state is either OK, Fail or ? (module not in place or a communication error). 
						

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Document no. M1031519-01                                                                           
4.3.1 Calibrations
How to calibrate T1/ T2
 The calibrations are possible only when the protection is set OFF. The temperature calibration 
requires accurate test plugs of value 25 °C and 45 °C.
1. Select Calibrate T1/Calibrate T2.
2. Insert the test plug 25 °C into the T1/T2 connector.
3. Press the ComWheel.
4. Insert the test plug 45 °C into the T1/T2 connector.
5. Press the ComWheel.
How to calibrate P1/ P2
 The calibrations require a pressure transducer (with appropriate cable) and a pressure manometer.
1. Connect the pressure transducer with the pressure manometer to the P1/P2 connector. Select 
Calibrate P1/Calibrate P2. Leave the transducer to room air pressure.
2. Press the ComWheel to start zeroing.
3. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended pressure is  
200 mmHg.
4. Set the pressure on the display to match the pressure reading on the manometer and press the 
ComWheel.
 
Protection: Protection for the configuration  and 
temperature calibrations can be set ON and OFF.
Set Config: The module configuration should be set 
according to the module type. The setting is possible 
only when the protection is set OFF. The available 
selections are TP, ST or STP. The configuration setting 
should be checked, if the STP board is replaced.
Calibrate T1 / Calibrate T2: The functions are for 
calibrating the temperature channels T1 and T2.
Calibrate P1/ Calibrate P2: The functions are for 
calibrating the invasive blood pressure channels P1 
and P2. 
						

							Service Menu
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                                          Document no. M1031519-01
4.4 P/PT
Service menu for Pressure Module, M-P or E-P, and 
Pressure Temperature Module, M-PT or E-PT.
Calibrations: see section “P/PT Calibrations”.
Temp Test activates the automatic temperature test for 
the temperature channels T3 and T4. The result from the 
test is shown in the service data field.
NOTE: The Temp Test needs to be selected twice before 
the test starts.
Record Data: Record Data prints out the shown service 
data and board information (id., serial number, and 
software id.) onto the recorder.
Service Data
Gain is a coefficient to compensate gain error. Usually 
the value for P3 is between 17000 and 25000 and for 
T3 and T4 between 13000 and 14300. 
Zero indicates the offset compensation value of each 
parameter in the A/D converter. Typically the values for 
P3 are within ±1000 and for T3 and T4 between -150 and +300. Calibrate if the zero and/or gain value is outside the
 
ranges.
Cable shows ON when the corresponding cable isconnected to the front panel.
Probe shows ON when the corresponding probe is connected to the cable.
Under Value, the measured numeric values are displayed simultaneously. The pressure value is a real time value and
 
shown in mmHg.
Button; the front panel key function can be confirmed by pressing the key and checking that OFF turns to ON.
Temp error shows whether the calibration of the temperature was successful or not.
Protect key shows normally OFF but turns to ON when the button at the bottom of the module is pressed.
Protect mode is normally ON. It turns to OFF when Protect is switched to OFF for the temperature calibration in 
Calibration Menu.
Configuration shows the chosen module configuration: BP or PT.
Timeouts is a cumulative number that indicates how many times the module has not responded to the monitors 
inquiry. 
Bad checksums is also a cumulative number that indicates how many times communication from the module to 
monitor has broken down. 
Bad c-s by mod is a cumulative number that indicates how many communication errors the module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The values may also be reset when
 
a module is attached to the monitor frame and be set to 32769 or continuous counting may be started when the 
module is removed from the monitor frame. 
The nonzero values do not indicate a failure, but the continuous counting (more than 5 per second) or value 32769 
indicates either a serial communication failure or a module not in place. Also failures in other modules may cause 
these numbers to rise or be set to 32769. 
						

							Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
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Document no. M1031519-01                                                                           
RAM indicates the state of the RAM memory.
ROM indicates whether the checksum at the EPROM is in accordance with the one the software has calculated. 
EEPROM indicates if the values stored in the permanent memory are valid. 
The state is either OK, Fail or ? (module not in place or a communication error).
4.4.1 P/PT Calibrations
How to calibrate T3/ T4
The calibrations are possible only when the protection is set OFF. The temperature calibration 
requires accurate test plugs of value 25 °C and 45 °C.
1. Select Calibrate T3 / Calibrate T4.
2. Insert the test plug 25 °C into the T3 / T4 connector.
3. Press the ComWheel.
4. Insert the test plug 45 °C into the T3 / T4 connector.
5. Press the ComWheel.
How to calibrate P3
The calibration requires a pressure transducer (with an appropriate cable) and a pressure 
manometer.
1. Connect the pressure transducer with the pressure manometer to the P3 connector. Select 
Calibrate P3. Leave the transducer to room air pressure.
2. Press the ComWheel to start zeroing.
3. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended 
pressure is 200 mmHg.
4. Set the pressure on the display to match the pressure reading on the manometer and press 
the ComWheel.
Protection for the configuration and temperature 
calibrations can be set ON and OFF only when the 
protect button at the bottom of the module is pressed.
Set Config: The module configuration should be set 
according to the module type. The setting is possible 
only when the protection is set OFF. The available 
selections are BP or PT.
The configuration setting should be checked, if the PT 
board is replaced.
Calibrate T3 and Calibrate T4: The functions are for 
calibrating the temperature channels T3 and T4.
Calibrate P3: The function is for calibrating the 
invasive blood pressure channel P3. 
						

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                                          Document no. M1031519-01
4.5  PP
Service menu for Dual Invasive Pressure Module, M-PP 
or E-PP.
Calibrations: see section ”PP Calibrations.” 
Record Data prints out the service data and circuit 
board information (id., serial number, and software id.) 
on the recorder.
Service Data
Gain is a coefficient to compensate for gain error. 
Usually the values for P5 and P6 are between 17000 
and 25000.
Zero indicates the offset compensation value for each 
parameter in the A/D converter. Typically the values for 
P5 and P6 are within ±1000. Calibrate if the zero and/or 
gain value is outside the ranges.
Cable shows ON when the corresponding cable is 
connected to the front panel and Probe shows ON when 
the corresponding probe is connected to the cable.
Value displays the measured numeric values simultaneously. The pressure value is a real time value and shown in 
mmHg.
Button; the front panel key function can be confirmed by pressing the key and checking that OFF turns to ON.
Timeouts is a cumulative number that indicates how many times the module has not responded to the monitors 
inquiry. 
Bad checksums is a cumulative number that indicates how many times communication from the module to the 
monitor has failed. 
Bad c-s by mod is a cumulative number that indicates how many communication errors the module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The values may also be reset 
when a module is attached to the monitor frame and be set to 32769 or continuous counting may be started when 
the module is removed from the monitor frame. 
The nonzero values do not indicate a failure, but the continuous counting (more than 5 per second) or value 32769 
indicates either a serial communication failure or a module not in place. Also failures in other modules may cause 
these numbers to rise or be set to 32769.
RAM indicates the state of the RAM memory. 
ROM indicates whether the checksum in the EPROM is in accordance with the software calculated value. 
EEPROM indicates whether the values stored in the permanent memory are valid. The state is either OK, Fail or ? 
(module not in place or a communication error). 
						

							Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
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Document no. M1031519-01                                                                           
4.5.1 PP Calibrations
How to calibrate
The calibrations require a pressure transducer (with an appropriate cable) and a pressure 
manometer.
1. Connect the pressure transducer with the pressure manometer to the P5 / P6 connector. Select 
Calibrate P5 / Calibrate P6. Leave the transducer at room air pressure.
2. Push the ComWheel to start zeroing.
3. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended pressure is 
200 mmHg.
4. Set the pressure on the display to match the pressure reading on the manometer and push the 
ComWheel.
Calibrate P5 and Calibrate P6
These functions are for calibrating the invasive blood 
pressure channels P5 and P6.