GxT Ferret 63 DIAGNOSTIC ENGINE ANALYZER - Manual (Page 35)

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DIESEL TIMING & RPM
The analyzer also provides diesel engine RPM and injec-
tion timing tests. The necessary input signals come from
the optional Ferret 854 Magnetic TDC Detector, and from
a No.1 cylinder Diesel Injection Detector. See instruc-
tions provided with the optional detectors.
The analyzer SETUP has a diesel ignition selection.
If selected, analyzer operation is limited to the fol-
lowing tests. Press any test key to find these tests.
Injct RPM, V & A
Mag RPM, V & A
Mag Probe Timing
Ohms to Ground
DIESEL INJECTION DETECTOR TESTS
Connect the injection detector pulse sensor around the
No.1 cylinder fuel line, and connect the detector to the
Analyzer Spark Pickup input. For the most reliable mea-
surements SELECT Diesel in the analyzer SETUP.
Injct RPM, V & A:
The “Injector RPM” test reads RPM from the No.1
cylinder injection detector input, and displays bat-
tery volts, aux. volts, and the amp probe current.
The screen is like the “Charging Starting” test.
Diesel Strobo Timing:
Diesel Timing can also be measured with the strobo tim-
ing light when the No.1 cylinder signal is provided by the
Diesel Injection Detector. The light can be used without
selecting a specific test.
OHMS TO GROUND
This is the same “Sensor Test” key function.
MAG PROBE TESTS
TDC signals can be detected from timing probes mounted
on engines. The TDC detector is designed to work with
timing wheels having either notches or pins. When the
magnetic probe is aligned with a wheel mark the detec-
tor sends a pulse to the engine analyzer and flashes an
indicator lamp on the detector. To operate, plug the TDC
Detector into the analyzer timing connector, and connect
the magnetic probe to the Detector.
Mag RPM, V & A:
Reads RPM from the Mag Probe signal, and displays bat-
tery volts, aux. volts, and the amp probe sensed current.
The test calls for selection of the number of wheel dents:
(pins or notches) Choose 1 & VW, 2, 3, or 4. Magnetic
Probe RPM readings work from cranking to 6000 RPM.
Mag Probe Timing:
The display shows No.1 cylinder RPM, timing advance
degrees, and the selected Offset. The test reads the ig-
nition timing angle between the No.1 cylinder pulse and
the mag probe pulse with the offset angle subtracted.
The test selections for mag probe offset are: 20°, 0°,
10°, 15°, & VW. Timing measurements work from idle
to 6,000 RPM.
Up to five readings can be saved and printed as data.
This test is also available for spark ignition engines.
Press the SENSOR TEST key to SELECT the test.
Without the TDC Detector connected this test may show
strange readings. More detailed instructions are en-
closed with the 854 Magnetic TDC Detector and Diesel
Injection Detector.
SELECT: Diesel/ 4Stroke
Ignition then START
SELECT:
TEST then START
XXXX RPM ADV xxx
START to save. 20 Offset
XXXX RPM Bat 13.76
XXX AMPS Aux>Gnd 10.43