St60 Speed Pcb Details; Input/Output Signals - Raytheon ST60 Service Manual

4 ST60 Instruments Service Manual 83142-1

ST60 Speed PCB details

Input/Output signals

(refer to Figure 2. ST60 Speed circuit diagram)
Rear case Signal
connection
A (Red) BATT+_2
B (Screen) BATT-_2
C (Yellow) STALK_2
D (Red) BATT+
E (Screen) BATT-
F (Yellow) STALK
G (Red) 12V_SPD
H (Green) SPD
J (Screen) OV
K (White) TEMP
L (Brown) OVANA
Rear case connections to ST60 Speed instrument
Part 1. ST60 Instruments – Chapter 1. Speed
Description
Nominal 12V DC supply
OV
Intermittent streams of (nominal) 12V pulses
Nominal 12V DC supply
OV
Intermittent streams of (nominal) 12V pulses
Approximately 11.2V DC out
With transducer attached, spinning paddle-wheel produces pulses
approximately 11.2V DC in amplitude @ 5.5Hz/Knot.
OV
With transducer attached, voltage here is dependant on
temperature. Approximately 1.8v at 0 degrees C.
OV
D4480-1