CARESCAPE Monitor B450
126
2062973-003
9.4.2 Touchscreen sensor
The patient monitor has a resistive touchscreen sensor in the front of the LCD panel. The
touchscreen sensor detects the presence and location of a touch within the display area and
communicates the information through the touchscreen cable to the touchscreen controller
at/ on the DC/DC board.
9.4.3 E-Module board
The E-module board is a simple connector board. It interfaces the CPU Carrier Board to the
DC/DC Board and provides a D25 male connector for one single-width E-module.
9.4.4 Alarm light board
The right hand side of the alarm light board contains red, yellow and blue LEDs to display
different priority visual alarms. The left hand side of the alarm light board has blue LEDs for the
silence alarm indicator light.
The alarm light board also has a separate light sensor that is capable of measuring the
ambient light intensity. The ambient light feedback can be used to auto-adjust the brightness
of the LED backlight of the LCD panel to the different ambient light conditions.
The alarm light board is connected to the DC/DC board with the alarm light cable.
9.4.5 Speaker Unit
The speaker unit is used to provide audible alarms. The audio signal for the speaker is
generated in the CPU carrier board using an audio codec and an audio amplifier. Audio
feedback controls the operation of the speaker.
The speaker cable is connected to the E-module board.
9.4.6 Keypad & Buzzer
The patient monitor has a user interface board with an on/standby button and three power
indicator LEDs: mains voltage indicator, battery use indicator and battery charging/failure
indicator. The user interface board is connected to the DC/DC board with a user interface
cable.
The buzzer is connected to the user interface board. It functions as a back-up speaker and also
provides an audible power loss alarm.
9.4.7 Recorder unit/ assembly
The optional recorder assembly consists of a 50 mm recorder and a recorder board.
The recorder board interfaces the recorder to the DC/DC board through the battery board. The
recorder board provides the following main functions:
•
It passes the recorder control signals and the serial communication lines to the recorder.
•
It has a circuit-breaker and a LC-filter for the +12 V.
•
It 5 V to the recorder.
The serial communication and recorder buffers are in the EMBC section of the CPU carrier
board.
9.4.8 Battery board
The battery board is a simple connector board. It interfaces the two lithium-ion batteries and
the optional thermal recorder to the DC/DC board.
Содержание CARESCAPE Monitor B450
Страница 12: ...CARESCAPE Monitor B450 4 2062973 003 For your notes ...
Страница 16: ...CARESCAPE Monitor B450 8 2062973 003 For your notes ...
Страница 46: ...CARESCAPE Monitor B450 38 2062973 003 For your notes ...
Страница 56: ...CARESCAPE Monitor B450 48 2062973 003 For your notes ...
Страница 62: ...CARESCAPE Monitor B450 54 2062973 003 For your notes ...
Страница 108: ...CARESCAPE Monitor B450 100 2062973 003 For your notes ...
Страница 124: ...CARESCAPE Monitor B450 116 2062973 003 For your notes ...
Страница 127: ...Theory of operation 119 2062973 003 9 2 DC DC Board Figure 4 CARESCAPE Monitor B450 DC DC Board Block Diagram ...
Страница 136: ...CARESCAPE Monitor B450 128 2062973 003 For your notes ...
Страница 175: ...Troubleshooting 167 2062973 003 ...
Страница 180: ...CARESCAPE Monitor B450 172 2062973 003 For your notes ...
Страница 218: ...CARESCAPE Monitor B450 210 2062973 003 For your notes ...
Страница 224: ...CARESCAPE Monitor B450 A 4 4 2062973 003 Notes Used service parts Signature Date ...
Страница 227: ...Maintenance check form B 3 4 2062973 003 Notes Used service parts Signature Date ...
Страница 228: ...CARESCAPE Monitor B450 B 4 4 2062973 003 For your notes ...
Страница 235: ......