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R00.f RT 1000 v1.0 Deployment Guide 21

Testing and Maintaining the Equipment

Testing the Layout

You can record the parameter tests with one live receiver line while the layout

crews are continuing to work on the next nine lines. This way, the parameter

testing won’t consume any potential production time.

You can economize by combining some of the tests.

4.2.4 Built-In-Self-Test (BIST)

• A method will be provided for synchronizing tests across all WLSs

• Tests executed during deployment are for “go/no-go” purposes. The WRU will

perform low-resolution evaluations of deployment tests and indicate the result with

the battery LEDs. This is to save time and power and to reduce the effort required

to write high-resolution evaluation in the WRU

There will be tests to implement in 2 places. We plan a “go no-go” test at the WRU

that will be a simple calculation (not high precision) in order to assess if the

channels and geophones are good. This could be done by Alex or someone like

him. At the BSU application or LTU, the data for each of the test records (some

tests have several records) would be sent from the WRU and processed with

precision and the values for the tests calculated. I have someone that can write

this software. The main reason to do this is when the system is audited the data

and results for the same data, must be provided for analysis. If we do precision

calculations at the WRU it adds complexity and may increase processing

requirements

• Tests executed from the central system are for verifying the WRU specifications.

• WRUs will be commanded to execute internal and/or external tests. The data will

be returned to the base station (in early development) or to the central system for

high-resolution evaluation

Internal

During these tests the Geophone is disconnect electrically for the preamp. An

internal test oscillator (where appropriate) drives the WRU analog channel in order

to measure the characteristics of the Preamplifier and A/D. These tests should be

run prior to running the external tests.

• Equivalent Input Noise (EIN)

• Total Harmonic Distortion THD

• Pulse

Calibration

• Channel Gain error and Phase error

B. External

During these tests the geophone is connected to the preamplifier and test circuitry

for the purpose of measuring and characterizing the planted geophone. These