Fluke Biomedical 945A - Manual (Page 50)

CONTROL SIGNAL
BUS
ADDRESS
BUS
DATA
BUS
REGISTER
SELECT
READ
REGISTER
DECODER
U34
OPTO
ISOLATOR
S1
USER REMOTE ALARM
ACK INPUT
CLEAR SWITCH
LATCH
SWITCH
LATCH
U63
SWITCH
INPUTS
4000
U62
CE
CE
SENSITIVITY
SELECT
4008
U42
DATA ENTRY
4002
U36
CE
DIGIT VALUE ENTER FUNCTION
9.0
E 2
PROM SERIAL DATE
ANTI-JAM
FRONT PANEL
CONNECTOR
JP3 JUMPER
ARRAY
• SENSITIVITY
• AUTO FAIL ACK.
• AUTO ALARM
ACK.
X5
HIGH WARN ALARM
ACK.
C S
Figure 4-2. Page 3 of 3. Block Diagram - Main Circuit Board
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