how to change Upstream Modulation???

[qweee]

i tried both changed config and changed mac address, but same upstream mode is SCDMA :S:S

any idea?

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how to i use this command?

DESCRIPTION:
Causes the CM HAL to constantly transmit a PRBS23 pattern upstream with the
specified QAM/QPSK mode, symbol rate, frequency, and power level. Use only
in test mode!

EXAMPLES:
us_transmit 16qam 1.28 7.5 40.0 tdma --