Installation manual

GEM INSTALLATION MANUAL DOCUMENT No. 070906 REV. 1.4
INSIGHT
INSTRUMENT CORP. 2 BOX 122, FORT ERIE, ONTARIO, L2A 5M6
If You Read Nothing Else Read This!
Follow these recommendations to minimize installation related problems.
USE CAUTION when crimping the terminals onto the end of the GEM harness. Test each crimp by
tugging on it sharply. It is almost impossible to pull off a properly crimped terminal.
KEEP the GEM harness at least 1 inch away from the ignition harness, P-leads, and alternator wiring.
Some aircraft produce electrical noise, which will cause erratic indications.
These displays are designed for rugged use. However, since they are constructed of computer-type
components, standard precautions for electronic equipment are required;
· Do not expose to rain or water.
· Handle with care - DO NOT DROP.
· Ensure that all electrical connections are correct and properly made.
· Observe electro-static discharge precautions.
The GEM can only do its job of performing accurate engine monitoring if the engine and airframe have a
good, solid, low-resistance electrical connection between them. Check for this with a careful visual
inspection of the aircraft's ground connections. A measurement with an Ohmmeter will reveal a gross fault
but a better test is to measure between the engine case and the airframe with a voltmeter with the engine
running and the electrical system under normal load. The voltage difference should be very small (millivolts).
Overlooking this important step can lead to a lot of unnecessary troubleshooting later.
Insight Instrument Corp. supports GEM installations with Insight thermocouple probes and harness. GEM
installations with probes and harnesses from other manufacturers are not supported.
NOTE!
Do not use a LED flashlight for the display brightness test! Use a flashlight with an incandescent bulb!
GEM Installation Location Cautionary Notice
The G-series GEM graphic engine monitors have EGT, CHT and TIT primary STC. The GEM display must
be mounted so as to be clearly visible to the pilot. The GEM display should be mounted within the pilot’s
subpanel or the center panel and not on the copilots subpanel unless the GEM can be canted towards the
pilot.
GEM Configuration
All G-series GEM's require configuration of important instrument parameters relating to the aircraft, engine,
fuel system, etc.
G1 GEM's are NOT field-configurable so it is essential to supply all the essential aircraft engine data to
Insight at the time of placing the GEM sales order.
G2, G3 and G4 GEM models may be configured in the field but if all the necessary data is supplied to Insight
at the time of placing the sales order, the GEM can be pre-configured at the factory. Installation will go
quicker and easier if Insight does the configuration for you.