GE HEALTHCARE CARESCAPE Monitor B650, Техническое руководство

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CARESCAPE Monitor B650
126
2062973-002
Module frame flex board
The module frame flex board interfaces the recorder assembly, PDM interface and PSM
interface to the hinge flex board.
The module frame flex board provides the following main functions:
•
It routes the +12 V supply voltage, recorder control signals and the serial communication
lines to the recorder assembly.
• It routes the RS-485 communication lines to a PSM module.
• It has a circuit breaker for the +15 VMod PSM supply voltage. The circuit breaker is
enabled by a control signal set by the PMC CPU after the main CPU has requested to
enable the voltage.
• It routes the Ethernet communication lines to a PDM module.
• It has a circuit breaker for the VSYS PDM supply voltage. The circuit breaker is enabled by
a control signal set by the PMC CPU after a PDM ID resistor has been detected.
• The +15VMod PSM circuit breaker is enabled in start-up by a control signal received from
the PMC CPU.
• The VSYS PDM circuit breaker is enabled by a control signal set by the PMC CPU after the
main CPU has requested module voltages enabling, providing that the other PDM
connection port is not connected.
• It has an I2C A/D converter to measure the on board (+15V MOD PSM, VSYS RACK and
VSYS ePort) and recorder (+5V REC and +12 V REC) supply voltages. This information is
communicated to the PMC CPU in the DC/DC board over the I2C -bus.
E-module interface board
The optional E-module interface board connects to the hinge flex board. It has two D25 male
connectors that provide an interface for two single-width E-modules or for one double-width
E-module.
The E-module interface board provides the following main functions:
•
It routes the RS-485 communication lines from the hinge flex board to the E-modules.
• It generates a +5VMod supply voltage for the connected E-modules from the VSYS input
voltage using a step-down converter.
• It gen15Va and -15Va supply voltages for the connected E-modules from the
+15VMod input voltage using a flyback converter.
• It passes the + 15VMod input voltage as a +15VD supply voltage for the connected
E-modules.
• It has circuit breakers for the VSYS and +15VMod supply voltages. The circuit breakers are
enabled by the PMC CPU after the main CPU has requested to enable these module
voltages. The sequencing of the flyback and step-down converter is controlled by on
board electronics.
• Overvoltage of the generated supply voltages will disable the VSYS and +15VMod circuit
breakers.
• An I2C A/D converter and I2C temperature sensor measure the supply voltages
generated for the E-modules and the board temperature. The information is
communicated to the PMC CPU in the DC/DC board over the I2C -bus.