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[Discuss-gnuradio] Flex400 TX gain

From: R and D
Subject: [Discuss-gnuradio] Flex400 TX gain
Date: Mon, 6 Mar 2006 16:45:05 -0800

The Flex400 driver (db_flex.py) has the following code:

    def gain_range(self):
        Return range of gain that can be set by this d'board.

        @returns (min_gain, max_gain, step_size)
        Where gains are expressed in decibels (your mileage may vary)

        Flex Tx boards require that the PGA be maxed out to properly
bias their circuitry.
        g = self._u.pga_max()
        return (g, g, 1.0)

Am I understanding correctly that there is no way to adjust gain on
the TX path? If I modified the code to allow programming of lower
values in the PGA, what would the effect be? I mean, would that be a
bad thing?


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