TM 9-2350-247-20-1STE/ICE-R TEST 90 DC CURRENT 0 TO 1500 AMP 0126 00THIS WORK PACKAGE COVERS:Test (page 0126 00-1)INITIAL SETUP:Maintenance LevelUnitTools and Special ToolsSTE/ICE-R Test Set (WP 0541 00, Item 6)Personnel RequiredUnit MechanicReferencesSee your -10TM 9-4910-571-12&PEquipment ConditionEngine stopped (see your -10)Carrier blocked (see your -10)STE/ICE-R power hooked up (WP 0114 00)STE/ICE-R starter circuit test hooked up (WP 0116 00)NOTEIf current probe is below room temperature, wait at least 5 minutes after connecting probe toVTM before doing offset test, or perform offset within 30 seconds of starting each measurement.1. Perform offset test.a. Set TEST select switches to 90.b. Push and hold TEST button until CAL appears. Release TEST button.c. If VTM reads between -225 and +225, offset test passes.d. If offset test fails, see TM 9-4910-571-12&P.2. Press and release TEST button3. Turn on circuit used to condition current probe. If starter is used to condition probe, energize starter long enough toobtain a reading. Do not allow engine to start.4. Note polarity sign of conditioning current. If readout is negative (-), reverse current probe, and repeat Steps 1 page0126 00-0 - 4 page 0126 00-0.5. Turn off circuit used to condition current probe.6. Perform offset test.NOTEStray magnetic fields can affect the current reading. Such fields may exist within a foot or so ofoperating carrier generators and alternators, motor generators under load, and electric motors.Keep current probe at least one foot away from any operating generators, alternators, orelectric motors.7. During offset test, the component being tested must be off, and the circuit must be de-energized.a. Turn off component to be tested.b. Install current probe where current is to be measured.0126 00-1
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