Raytheon ST60, Service Manual

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Part 1. ST60 Instruments – Chapter 3. Multi
A22003
20 ST60 Instruments Service Manual 83142-1
ST60 Multi PCB details
Input/Output signals
(refer to Figure 4. ST60 Multi circuit diagram)
Rear case Signal Description
connection
A (Red) BATT+_2 Nominal 12V DC supply
B (Screen) BATT-_2 OV
C (Yellow) STALK_2 Intermittent streams of (nominal) 12V pulses
D (Red) BATT+ Nominal 12V DC supply
E (Screen) BATT- OV
F (Yellow) STALK Intermittent streams of (nominal) 12V pulses
G (Blue) NMEA_OUT- Open-drain pull-down
H (Red) N Approximately 11.2v, current limited to 80mA
J (Blue) NMEA_IN- Isolated opto input, 550 ohms
K (Red) Isolated opto input, 550 ohms
Rear case connections to ST60 Multi instrument
D4482-1
NM
EA
IN
N
M
EA
O
UT
G
H
J
K
A
B
C D E
F