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Getting Started
1-8 GB1400 User Manual
9. Set Generator pattern to a 2
23
-1 bit PRBS using controls in the
PATTERN box as follows:
a. Press PRBS.
b. Press the pattern up/down keys until PATTERN is set to PN 23.
10. Verify that the Generator error injection rate is off. If the LED in the
error inject RATE key is on, then press RATE one or more times until it
turns off.
11. Verify that the Analyzer auto-search function is enabled. If the LED in
the AUTO SEARCH key is off, then press AUTO SEARCH one time to
turn it on. At this point, verify that the green LOCK LED in the
Analyzer SYNC box is on.
12. Zero all Analyzer error counts by pressing CLEAR in the ERROR
DETECTION group.
13. Reset all Analyzer history LEDs by pressing CLEAR in the ERROR
HISTORY group.
14. Verify GB1400 Analyzer can detect errors by pressing the Generator
error inject SINGLE key several times. Verify that the Number of Errors
count displayed by the Analyzer increments each time the Generator
SINGLE key is pressed.
In effect you are now performing a bit error rate test on the test cables connecting
the GB1400 Generator and Analyzer. In an actual BER test, GB1400 Generator
clock and data outputs would be connected to inputs on a "device under test"
(DUT) while GB1400 Analyzer inputs would be connected to outputs on the
DUT.