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E331.E2501.061.21.02.02
System SIRECUST 1280/1281
Bedside Monitor - Service Manual
SIGNAL NAME
GLOSSARY OF SIGNALS
SIGNAL MEANING
POWER SUPPLY BOARD A140/A280
AC INTO
SHUT DOWN
SLOW TURN ON
Signal indicates pending main power failure.
The signal switches output voltages of the power supply OFF
when the voltage falls below the minimum supply voltage.
The
signal slowly increases
current limitation after the unit is
switched ON.
FRONT END BOARD A190
14 CY INT
A...D DAT
A...D AUX EN
A...D DATA EN
BATT
BG 3L
BR 3L
BUS EN L
BUS ERROR L
CAS
CLK A1/A2/B1/B2
CLK C1/C2/D1/D2
CONT INT 1516 L
CSOOL..CS13L
DCSA 12..DCSD 12
ENFE
Strobe signal for serial data from SIREM.
Multiplexed data lines from SIREM.
Release of the auxiliary bits received by the module boxes onto
the data bus.
Release of the data bits received by the module boxes onto the
data bus.
Battery-buffered supply voltage for SRAMs.
Bus assignment by ARBITER (Display Processor Board A372.)
Bus request of Front End Board A190.
Internal bus enable signal.
Bus error message. Signal is generated by the display processor.
Column address enable for DRAM.
Serial data to SIREM 1.
Serial data to SIREM 2.
Signal clears serial input strobe (14 CY int.)
Chip select
signals for EPROM, SRAM and DRAM.
Differential cartridge signals from SIREMs.
Activation of the time control for module
boxes.
Page D-1
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