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Pinpoint Test A: Most Tester Tests

A1: MOST TESTER BATTERY TEST 

  1. Set the MOST tester power switch to 'on'

    2. Is the power LED illuminated? 

    YES:  Test passed. GO to A2 

    NO:  Test failed. Install a new battery into the MOST tester. GO to A1  .

A2: 2+0 INPUT/OUTPUT TEST 

NOTE: '2+0' indicates that the loop harness connector consists of 2 fibre optic terminals and 0 electrical terminals.
NOTE: The MOST tester may continue to emit a tone or illuminate the LED after the test switch is released. This does not indicate a fault.
  1. Set the MOST tester power switch to 'on'
  2. Set the connector selector switch to '2+0'
  3. Set the indication switch to 'beep' or 'LED'
  4. Remove the covers from the MOST tester 2+0 connector and the 2+0 loop harness connector
  5. Connect the 2+0 loop harness to the MOST tester 2+0 connector
  6. Operate the test switch and check the MOST tester beep/LED

    7. Did the MOST tester emit a tone or illuminate the LED? 

    YES:  Test passed. GO to A3  .

    NO:  Test failed. MOST tester or 2+0 harness fault.

A3: 2+4 INPUT/OUTPUT TEST 

NOTE: 2+4' indicates that the loop harness connector consists of 2 fibre optic terminals and 4 electrical terminals.
NOTE: The MOST tester may continue to emit a tone or illuminate the LED after the test switch is released. This does not indicate a fault.
  1. Set the MOST tester power switch to 'on'
  2. Set the connector selector switch to '2+4'
  3. Set the indication switch to 'beep' or 'LED'
  4. Remove the covers from the MOST tester 2+4 connector and the 2+4 loop harness connector
  5. Connect the 2+4 loop harness to the MOST tester 2+4 connector
  6. Operate the test switch and check the MOST tester beep/LED

    7. Did the MOST tester emit a tone or illuminate the LED? 

    YES:  Test passed. GO to A4  .

    NO:  Test failed. MOST tester or 2+4 harness fault.

A4: ADAPTER HARNESS AND PRISM TEST 

NOTE: The MOST tester may continue to emit a tone or illuminate the LED after the test switch is released. This does not indicate a fault.
  1. Set the MOST tester power switch to 'on'
  2. Set the connector selector switch to '2+0'
  3. Set the indication switch to 'beep' or 'LED'
  4. Remove the covers from the MOST tester 2+0 connector, the prism, and the adapter harness connectors
  5. Connect the adapter harness to the MOST tester 2+0 connector
  6. Connect the prism to the adapter harness
  7. Operate the test switch and check the MOST tester beep/LED

    8. Did the MOST tester emit a tone or illuminate the LED? 

    YES:  Test passed.

    NO:  Test failed. MOST tester, adapter harness or prism fault.

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