3M Comprehensive Guide to 900AST Setup and Operations

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3MAdvanced Systems Tester 900AST Series

Setup for Use

Battery Requirement

The battery holder holds six “AA” standard alkaline batteries and should be installed prior to using the unit. Please see the 900AST tester manual or DVD for battery installation instructions. Always initiate a self-calibration after installing new batteries.

The battery symbol in the upper right-hand corner of the display gives an indication of the approximate battery capacity. Each bar represents one-quarter of the full capacity.

Front Panel

Test Leads

The test lead icons are shown on each of the measurement screens and appear after a function or test is selected. Each lead points to a color dot on the front label that corresponds to the actual test lead and test jack to be used. This on screen display is the connection diagram for the selected test. The active control keys are displayed on the bottom of the screen and act as a guide through setup and testing.

For TDR applications using the special coaxial TDR test lead(s), the test lead icons indicate which test jacks (also denoted by colors) to use.

Operational Help

For operational information, refer to the 900AST

tester manual or “Help”

control key on the

900AST tester keypad. For technical service, warranty or repair questions, call 800 426 8688 (US and Canada) or contact your local 3M representative.

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Contents Advanced Systems Tester 900AST Series Coaxial Wire Testing December 78-8135-6156-6-ASetup for Use Keypad Contrast and Backlighting Function KeysConnecting to Coaxial Wires for Testing CAUTIONTDR Setup TDR Test Modes Single TraceDual Trace MemoryPeak TDR Save for Coaxial Wiring Comparison Move CursorEvent Recognition Target Contact Open CircuitBranch Circuit Resistance Faults on Coaxial CableShort Circuit Soak TestAuto TDR for Coaxial Fault Detection Auto TDR Resistive Faults Auto TDR Trace Analysis Care and Maintenance Restoring the Aircraft After Testing/ TroubleshootingImportant Notice