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Evaluation Kit User Manual
EV9000
2001 Consumer Microcircuits Limited
54
UM9000/2
Appendix C – Additional Tests for FX919B and FX929B
Test 8: Repetitive pattern test B to A
1 Application
To transmit long formatted messages filled with identical data bytes from channel B and receive
them in channel A to check for possible pattern sensitivity. If the path from Channel B to channel A
includes the actual radio circuitry to be used in a system, this test will give an indication of any
pattern sensitivity problem which may be due to inadequate end to end overall baseband
frequency and group delay responses.
2 Description
This test transmits 8 messages for each of the 256 possible data byte values.
Each transmitted message consists of Symbol Sync, Frame Sync, Station ID Block (FX929B
only), Header Block, 42 Intermediate Blocks and a Last Block.
For each byte value the rest reports the average receive data quality and the number of messages
received without error.
All commands written to either command register during the test include the CRC and TXIMP bit
settings from the panel.
An alert box provides the option to save results to a file (default name ES9000.XLT) upon test
completion.
3 Screen
Controls
There are no windows dedicated to this test. Press the HALT switch to abort this test.
4 Test
Sequence
Because of its complexity, it is not practical to document the complete test sequence. Instead,
refer to the sequence documented in Section 4.6.6 Test 6: "BER & DQ test 'B' to 'A' using
formatted messages" for a representative sequence of modem control.
5 Error
Codes
Similar to the error codes for Test 6, see Table 20.