SCHILLER
AT-1
3-Clmnel
ECG
Unir
SERVICE
IteVDBOOK
issue
2
July
1998
Chapter
8
Glossary
Acronvms
..os
A(
1
..d
Offset signal ion the ECG amplifier)
CPU
Address
Bus.
ALBEEP
Alarm
beeper
signal
to
the audio amplifier. The frequency
of
this
signal is about
1000
Hz.
Analog
input from
the
expeximentai inputs
DC1
and
DC3.
ANAL
ANA2
AS
Address
strobe
BAT"
BA?TLC
Signal
to
CPU indicaring battery operation
Analog
signal
to
the processor giving the charge condiaon of the
bactery.
Battery voltage
-
analog signal from the power supply
used
by the
processor
to
assess battery or
mains
operation.
BAW
BLOW
CHNI
..
CIF(0..16)
CI(O..lO)
CO(O..lO)
CL
1
CL2
CLK..
cs..
CTS
D
(0..15)
DACWR
DIO..
DMUX
DWV
DRC(0..6)
DS..
Battery less
than
113.
LCD
flashes when
this
signal is active. When
the battery voltage drops
to
below approximately
9.4V
the
unit
is
switched od These values apply
to
equipment with
12
V
battery. For
other equipment the
Limits
are
different.
ECG
signal multiplexer control signals (on the
ECG
Amplifier)
Communication interface. General conmi signals for
the
communication interface circuits.
RS
interface control lines
-
input.
RS
interface control lines
-
output.
19
kHz
LCD
latch
pulse.
3.1
1
MHz
LCD
clock frequency.
Clock Signal. The number following
the
CLK
indicates the frequency.
For example CLH
19
indicates
a
frequency of
19
MHz.
Chip select. The general format
of
the chip select signals
is
Cs
followed
by
some charmers. The characters indicate the device
to
which
tne
chip select
signal
apperms. For example CSRTC is
the
chip seiecr signal
for
the real time clock
and
CSEPROM
is
the
select
signal fot the
EPROM
etc.
Clear
to
send. Gened signal used in
data
communication.
Data
Bus
Digital
/
analog
converter wire.
Data inpudoutput on the Data
I/O
connector
Data multiplexer.
Dynamic
RW
DyTlamic
RAii
control.
Data
suobe.
Page
8.3
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