Chapter 4: St40 Wind Instrument; Input/Output Signals; Self-Test Procedure; Self Test Stage 1 - Raymarine ST40 Service Manual

Chapter 4, ST40 Wind Instrument
Chapter 4:

Input/output signals

Self-test procedure

ST40 Instruments Service Manual 83149-2
ST40 Wind Instrument
STALK (Yellow)
BATT- (Screen)
BATT+ (Red)
Connections to instrument
Signal Description
STALK Intermittent streams of (nominal) 12 V pulses
BATT- 0 V
BATT+ Nominal 12 V dc supply
ROTA+ Rotavecta current constant
ROTA- 0 V
Refer also to the ST40 Wind circuit diagram.
Each ST40 instrument has built-in self-test functions to aid fault diagnosis.
To self-test an ST40 Wind instrument:
• Press the and keys simultaneously for 4 seconds, to access self-test mode,
then within 2 seconds, press the
self-test stage 1.

Self test stage 1

When entering self test stage 1, the instrument beeps and the display shows TEST 1,
for 1 second. The following tests are then performed automatically:
• SeaTalk self test, which checks the receive and transmit circuits.
• EEPROM test (read and write).
If the tests are satisfactory, PASS is shown on the display.
If the tests are not satisfactory, the following failure codes may be generated:
Raymarine
Limited
and keys together momentarily, to start
ROTA+ (Red)
ROTA- (Blue)
D4836-2
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