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Performance Verification
GB1400 Acceptance Test E-7
Confirmation of Error Injection Rates
q Step 29: In the Analyzer ERROR DETECTION section, press the ‘DISPLAY
SELECT’ key until there is an ∞ (infinity) symbol on the display preceding the error
rate.
q Step 30: At the Analyzer, press the ‘CLEAR’ key in the ERROR HISTORY section,
and press the ‘CLEAR’ key in the ERROR DETECTION section to clear the history
LEDs and error rate display.
q Step 31: In the Generator ERROR INJECTION section, press the ‘SINGLE’ key and
confirm on the Analyzer the BIT LED (in the ERROR HISTORY section) lights and
that the displayed error total increases by one each time you press the ‘SINGLE’ key.
Press this key at least 20 times.
Note
Press the ‘SINGLE’ key briefly. If you hold it down, the Generator injects
errors repeatedly into the data stream.
q Step 32: In the ERROR HISTORY section, press the ‘CLEAR’ key to clear the
history LEDs.
q Step 33: In Generator ERROR INJECTION section, press the ‘RATE’ key. ERR 1E-7
will appear on the display. The ERROR INJECTION LED should be on steadily.
q Step 34: In the Generator ERROR DETECTION section, press the ‘CLEAR’ key to
clear the totalize error display.
q Step 35: Wait 15 seconds, then confirm that the error rate displayed on the Analyzer
matches the Generator injected error rate and that the Analyzer BIT LED in the
ERROR HISTORY section is lighted.
q Step 36: In the Generator ERROR INJECTION section, press the ‘RATE’ key once to
select the next error rate.
q Step 37: Repeat steps 33 through 35 until all Generator error rates have been
verified and EXT appears on the Generator display. Press the Generator ‘ERROR
RATE’ key once more to turn off error injection.
q Step 38: Look straight at the Generator LCD panel. Depress the VIEW ANGLE
button until you see the darkest digits. Change the vertical angle from which you
view the display and adjust the clarity by depressing the VIEW ANGLE adjust
button. This is to verify that the contrast of the display can be optimized for the
user’s viewing angle.
q Step 39: Repeat Step 37 for the Analyzer.
q Step 40: Set the Generator and the Analyzer to Factory Default settings. Verify that
the Analyzer SYNC LOCK light illuminates. Push the CLEAR key in the ERROR
HISTORY section. Record the delay value shown on the display (lower left display
area) for later use. De-select AUTOSEARCH on the Analyzer. Press the ‘DELAY’ key
in the input section of the Analyzer. Vary the delay using the ‘UP’ and ‘DOWN’ arrow