Viavi ALT-8000, Getting Started Manual

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ALT-8000 Getting Started Manual
26
STEP PROCEDURE
12. Select Save & Return to store value and return to the
Info Screen window. Select the Done key to return to
Test Setup (General Tab). The test set is now ready to
perform the Linear Altitude Ramp Test.
9 LINEAR ALTITUDE RAMP TEST
The Linear Altitude Ramp Test performs a linear up and
down altitude ramp, verifying adequate UUT loop gain. This
is the lowest level of flight-line testing recommended to
confirm reported problems, or to verify system operation
after LRU replacement.
Perform the following steps to complete the Linear Altitude
Ramp Test:
STEP PROCEDURE
1. Confirm the following settings and change as necessary.
Control
Start Altitude = 0 ft (50 to 75 ft for pulse type)
Stop Altitude = 2,500 ft (or maximum for system
under test)
Altitude Rate = 1,000 ft/min (2.5 mins duration)
NOTE:
Altitude Rate is selected 1 to 120,000 ft/min. If trip
operation is to be verified, a recommended rate of
<1000 ft/min should be entered.
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