GE Cardiocap 5 Service Manual

							
Service Menus 
VO2 Gain Adjusts the VO2 gain. 
Y deadspace Adjusts the Y-deadspace. 
N2 injection Selects On (1) or Off (0); setting is zero (0) during normal operation. 
Record Data Prints the shown service data and board information (id. serial number and 
software id.) to the recorder (N-XREC option). 
Spirometry calibration 
Spirometry calibration is not needed in routine clinical use, but is recommended as part of the yearly 
Planned Maintenance procedures. Use a calibration pump or spirometry tester to check the 
calibration. Check the TVol Exp and TVol Insp readings on the Spirometry Service Data screen and, if 
calibration is needed, adjust the flow gains accordingly. Gain scaling is 1.000 when factory settings 
are in effect. Calibration values are sent to the measurement unit during adjustment. 
When you select Exp Flow Gain, Insp Flow Gain, VCO2 Gain, VO2 Gain, Y deadspace, or N2 
injection, a box for adjusting the value appears. Turning the Comwheel adjusts the value. Pressing the 
ComWheel permanently stores the adjusted value in the measurement unit’s EEPROM.  
Spirometry Service Data screen 
• 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 the value used in the software. It can be adjusted, but not permanently stored. 
• Adult (or Pediatric) sensor according to selected measurement mode (sensor).  
Exp Gain and Insp Gain apply to the selected sensor. Exp and Insp Flow Gains are scaled as 
(user gain)/(factory gain). They can be adjusted in the user service menu. 
• Common Offset is the compensation factor for the 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 is either ENABLED or DISABLED (factory service menu only). 
• Aw Pressure shows the real-time value of airway pressure. 
• Ref. Condition shows the reference conditions in which results are located. With calibration 
pump or spirometry tester, the results are always in ATP. If breathing is detected (EtCO2 > 1.0 %), 
results are according to Flow & Vol Setup selection. 
• Flow shows the flow measurement value.  
• TVol Exp, TVol Insp, MVol Exp, and MVol Insp—the values shown on this screen are the same as 
the values shown on the main display.  
• VCO2 Gain and VO2 Gain—Not used in Cardiocap/5. 
• 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 VCO2 and VO2 delay 
time corrections. 
• N2 injection—set it to 1 during laboratory tests with a spirometry tester and injection of N2 gas 
(for scientific validations use only). At power on and during normal use, the value is always zero. 
• Ambient press shows the ambient pressure in mmHg. 
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8.7 ESTP : ECG service menu and data 
 
To enter this service menu from the 
Service View menu: 
1. Select Modules. 
2. Select ESTP : ECG. 
Power Freq Sets power frequency; 50 Hz/60 Hz. 
Filter Low Sets filter low frequency; 0.05 Hz/0.5 Hz. 
Filter High Sets filter high frequency; 30 Hz (40 Hz if power freq is 60 Hz) /100 Hz or 150 Hz 
Service Data screen 
Power freq and Cable type show the values chosen or detected. 
Filter low and high defines the selected filter (Monitor/Diagnostic/ST). 
Quick zero is ON when the signal in any of the three internal amplifiers goes beyond scale, and 
therefore, a capacitor connected to the related channel discharges overvoltage. At least one Quick zero 
value is OFF when using a 3-lead cable; all three are OFF when using a 5-lead cable. Quick zero also 
takes place when the lead is changed in 3-lead measurement.  
Cable shows ON when an ECG cable is connected. 
Electrode shows ON when each of these electrodes are connected. 
Pacer count is a running number for pacemaker users. 
Button is not used in Cardiocap/5. 
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 intervals.  
For definitions of Timeouts, Bad checksums, Bad c-s by mod, RAM, ROM, and EEPROM, see  
NIBP service menu, data, and checks later in this chapter. 
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Service Menus 
8.7.1 ECG Setup menu 
 
To enter this service menu from the 
Service View menu: 
1. Select Modules. 
2. Select ESTP : ECG.  
3. Select ECG Setup.  
Filter Filters the ECG signal high-frequency noise and slow-respiratory artifacts. 
 Monit (monitor) filter is used in routine monitoring. It effectively filters the artifacts 
caused by the electrosurgery unit and respiration.  
 Diagn (diagnostic) filter is used if more accurate waveform information is needed (of 
P-wave or AV block, for example). The diagnostic filter is more susceptible 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 artifacts caused by electrosurgery unit but catches the slow changes in ST 
segment. The ST filter is more susceptible to baseline wander than the monitor filter. 
Pacemaker Selects how to display the pacing pulse of a cardiac pacemaker. The selections are 
Show, Hide, ON R and Sensit. 
 Hide filters the pacing pulse away from ECG data. 
 Show filters the pacing pulse away from ECG data but the pulse is displayed as a 
constant height marker. 
 ON R does not filter pacing pulses 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. During asystole pacing pulses may be counted as heartbeats.  
 Sensit uses more sensitive pacemaker detection. Pacemaker spike is displayed on 
ECG. 
QRS Type QRS detection and HR calculation may be affected by the shape of the QRS 
complex. 
Normal QRS Type detects a heartbeat between 40 and 120 ms. 
Wide QRS Type detects a heartbeat between 40 and 220 ms. 
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8.8 ESTP : STP service menu and data 
 
To enter this service menu 
from the Service View menu: 
1. Select Modules. 
2. Select ESTP : STP. 
Record Data Records, or prints, the service data shown and board information (ID, serial number 
and software ID) on the recorder paper. 
Temp Test Activates the automatic temperature test for temperature channels T1 and T2. The result 
appears in the service data screen. NOTE: Select Temp Test twice to start the test. 
Service Data screen 
Gain is a coefficient to compensate gain error. Usually, P1 and P2 values are between 17,000 and 
25,000; the T1 and T2 values are between 13,000 and 14,300. Calibrate if any gain value is outside 
the range. 
Zero indicates the offset compensation value of each parameter in the A/D converter. Typically, P1 
and P2 values are within ±1000; the T1 and T2 values are between –150 and +300. Calibrate if any 
zero value is outside the range. 
Cable shows ON when a corresponding cable is connected to the front panel. 
Probe shows ON when a corresponding probe is connected to the Cable. 
Value shows the measured numeric values simultaneously. Pressure values are real-time values 
shown in mmHg. Temperature values are shown in degrees Celsius. 
Buttons is not used with Cardiocap/5. 
SpO2 shows the measured beat-to-beat SpO2 value.  
Modpr is a modulation % that indicates 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. They indicate the Probe Off state. Under Probe, an SpO2 
message field displays status messages, such as OK, Pulse search, No probe, Probe Off, No pulse, 
Artifact, Poor signal, or Check probe.  
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Service Menus 
Ired int. (infrared intensity) range is 40 to 255 and Red int. (red intensity) range is 40 to 255. 
NOTE: Balance between LEDs is adjusted by changing the infrared/red intensity.  
DC gain shows the adjusted DC signal gain. 
IDC is the value of the infrared signal and RDC is the DC value of the red signal. 
AC gain is the gain of infrared and red AC signals. AC gain values can be 1 (high gain) or 0 (low gain). 
Pre gain is a preamplifier gain for infrared and red signals. Pre-gain values can be 1 (normal 
operation) or 0 (signal levels are very low and extra gain is taken into use). 
Temp error shows the status of the temperature test: ON (errors found) or OFF (no errors found). 
Protect key is normally OFF. It turns to ON when the button at the bottom of the module is pressed. 
Protect mode is normally ON. It turns to OFF when Protection is switched to OFF for temperature 
calibration in the STP Calibrations service menu. 
Configuration shows the chosen module configuration: TP, ST, or STP. 
For definitions of Timeouts, Bad checksums, Bad c-s by mod, RAM, ROM, and EEPROM, refer to 
NIBP service menu, data, and checks later in this chapter. 
8.8.1  STP Calibrations menu 
 
To enter this service menu from the 
Service View menu: 
1. Select Modules. 
2. Select ESTP : STP.  
3. Select Calibrations. 
Protection Protects the configuration and temperature calibrations. Can be set ON (protected) and 
OFF only when protect button at the bottom of the module is pressed. 
Set Config Sets the configuration to TP, ST, or STP. The setting is possible only when Protection is 
OFF. This setting should be checked if the STP board is replaced. 
Calibrate T1 / Calibrate T2 
Calibrates temperature channels T1 or T2. Calibration is possible only when Protection is 
OFF. Accurate test plugs of 25 °C and 45 °C values are required. See Temperature 
calibration in the Service Procedures chapter. 
Calibrate P1 / Calibrate P2 
Calibrates the invasive blood pressure channels P1 and P2. A pressure transducer (with 
an appropriate cable) and a pressure manometer are required. See Temperature 
calibration in the Service Procedures chapter. 
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8.9 NIBP service menu, data, and checks 
 
To enter this service menu from 
the Service View menu: 
1. Select Modules. 
2. Select NIBP. 
The submenus shown in this menu (NIBP Demo, Calibrations, etc.) are described later in this section. 
Previous Menu Closes this menu and displays the previous menu.  
Service Data screen 
Pressure Measured pressure multiplied by 10. 
Zero Pressure at auto zeroing multiplied by 10 and changes between +20 and -20 mmHg 
(+2.7 to –2.7 kPa). Absolute pressure is the sum of Pressure and Zero. 
Protect handle Hardware protection for EEPROM memory (always ON during normal operation). If it 
is OFF, data cannot be read from or written to EEPROM; only the calibration 
protection can be set or reset by software. You can change the protection setting in 
the Calibration menu by turning the gear wheel (located inside a small hole in the 
bottom of the monitor) to enable Protection ON/OFF. 
Calibr. prot. Software calibration protection. It should be OFF to enable calibration.  
+15 V power The condition of the +15 Vdirty supply voltage for the pump and valves. It exists 
(ON) or not (OFF), depending on service menu function. The supply voltage can be 
turned ON by selecting the previous Menu and then the desired menu again. 
AD0 … AD7 The values of each of the eight A/D converter channels. 
Timeouts, Bad checksums, and Bad c-s by mod are cumulative numbers that indicate the following: 
Timeouts—how many times the module did not respond to an inquiry from the 
monitor.  
Bad checksums—how many times communication from the module to the monitor 
failed.  
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Service Menus 
Bad c-s by mod—how many communication errors the module detected. 
Counting starts at power up and resets to zero at power off. Nonzero values do not 
indicate a failure, but continuous counting (more than 50 per second) indicates a 
serial communication failure or that the module is not installed. Other modules can 
cause communication errors that cause these numbers to rise. 
RAM The state of RAM memory. 
ROM Indicates whether the checksum in EPROM is in accordance with the one the 
software calculated.  
EEPROM Indicates if the values stored in permanent memory are valid. 
The state is either OK, Fail, or ? (communication error or module is not installed). 
8.9.1 NIBP Demo menu 
This service menu is used for demonstrating the oscillometric method of NIBP measurement. The 
menu shows the real-time pressure signals that are measured from the NIBP cuff. The measurement 
result is shown in the adjoining digit field. 
 
To enter this service menu from the Service View menu: 
1. Select Modules. 
2. Select NIBP.  
3. Select NIBP Demo. 
Wave Recording Selects the recording option. If ON is selected, the pressure signals are recorded in 
real time onto the recorder paper. 
Remove menu Widens the displayed waveform area. 
Previous Menu Closes this menu and displays the previous menu.  If Remove menu was selected, 
you can also just press the ComWheel. 
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8.9.2 NIBP Calibration menu 
 
To enter this service menu 
from the Service View menu: 
1. Select Modules. 
2. Select NIBP.  
3. Select Calibrations. 
Active Leak Test Tests for leaks. 
Calibration Check Checks the calibration.  
For details, see NIBP calibration check in the Service Procedures chapter. 
Protection Software calibration protection (ON/OFF). When calibrating, Protection should 
be OFF. To change the Protection, you must activate the menu item by turning 
the gear wheel (located inside a small hole in the bottom of the monitor).   
For details, see NIBP calibration in the Service Procedures chapter. 
Calibration Calibrates NIBP. This selection is available only when Protection is OFF.  
For details, see NIBP calibration in the Service Procedures chapter. 
Active leak test 
1. Wrap an adult cuff around a stable cylindrical object (to simulate an arm) and connect the cuff to 
the monitor. 
2. Select Active Leak Test ON. Pressure of 260 mmHg (34.7 kPa) is pumped into the cuff 
automatically. 
3. Wait for several seconds until the pressure stabilizes. If the pressure reading drops more than  
6 mmHg (0.8 kPa) per minute, detect and fix leaking point(s). 
4. Cancel the test by selecting Active Leak Test OFF. 
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Service Menus 
8.9.3  NIBP Safety Valve menu and data 
 
To enter this service menu from 
the Service View menu: 
1. Select Modules. 
2. Select NIBP.  
3. Select Safety Valve. 
Start Test Starts the Safety Valve Test; changes to Stop Test after you start the test. 
Safety Valve Data screen 
See NIBP service menu, data, and checks earlier in this chapter for information on Pressure, Zero, 
Protect handle, Calibr. prot., +15 V power, AD0 to AD7, Timeouts, etc. 
Max. press and 2 s after stop show the measured values at Safety Valve test. 
Max. press The pressure at which the safety valve opens. It is normally 310 ± 15 mmHg  
(41.3  ± 2.0 kPa) for adult and 150 mmHg ± 15 mmHg (20.0  ± 2.0 kPa) for infant.  
2 s after stop The pressure at 2 seconds after the pump has stopped.  It is normally >280 mmHg 
(>37.3 kPa) for adult and >120 mmHg (>16.0 kPa) for infant. If the value is less, 
check leakage by the active leak test. 
Safety valve test (adult/infant) 
Wrap an adult cuff around a pipe and connect the cuff to the monitor. Choose Start Test and push the 
ComWheel. The test ends automatically or when you select Stop Test.  
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8.9.4 NIBP Pulse Valve menu and data 
 
To enter this service menu from 
the Service View menu: 
1. Select Modules. 
2. Select NIBP.  
3. Select Pulse Valve. 
Start Test Starts the Pulse Valve test; changes to Stop Test after you start the test. 
Set Valve Lets you adjust the opening of the pulse valve. 
Pulse Valve Data screen 
See NIBP service menu, data, and checks earlier in this chapter for information on Pressure, Zero, 
Protect handle, Calibr. prot., +15 V power, AD0 to AD7, Timeouts, etc. 
Pulse valve test 
1. Wrap an adult cuff around a pipe and connect the cuff to the monitor. 
2. Choose Start Test and push the ComWheel. 
The pressure rises beyond 240 mmHg (32.0 kPa) and stops. The pulse valve opens. The time it 
takes for the pressure to go from 240 mmHg to 50 mmHg (32.0 to 6.7 kPa) is counted and 
displayed on the screen.  
3. To stop the test, select Stop Test. 
The valve can be adjusted between 0 (fully closed) and 255 (fully open). To adjust, choose Set Valve 
and push the ComWheel. Adjust the pulse-valve value by turning the ComWheel, then push it to set 
the value. 
The Interval 240 mmHg -> 50 mmHg time should be less than 60 seconds when the valve is 150, 
and less than 10 when fully opened (255). When fully closed (0), the system should be airtight and the 
pressure does not drop. Depending on an individual, the pulse valve may remain closed up to 100, 
approximately. 
If the measured time deviates much from those above, then the pulse valve or its tubes are faulty. 
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