Re: [Discuss-gnuradio] signal level

[jason sam]

What will happen if i exceed this limit?Actually with this amplitude the TX power is very less...Is there any other solution?

On Thu, Jun 5, 2014 at 12:54 PM, Martin Braun <address@hidden> wrote:

On 05.06.2014 05:17, jason sam wrote:

Hi Tom,
Can you tell what is the constraint for USRP B210?

Stay *well* within +/-1.

M

On Thu, Jun 5, 2014 at 8:13 AM, Tom McDermott <address@hidden

<mailto:address@hidden>> wrote:

    Hi Ali - some sinks care about the amplitude, and others do not.

    For example, the instruments built into gnuradio (Scope, Frequency
    display, etc.) can examine a signal of almost any amplitude within
    floating-point range because you can adjust the display scale factor.

    However other sinks, such as a physical transmitter (USRP, HPSDR,
    etc.) are constrained in the amplitude that they can accept.
    Normally this must be less than one, and hitting or exceeding 1.00
    (even just on the peak)  can cause problems. Also a physical
    transmitter might have only 12 or 16 bits fixed point dynamic range,
    so there may be a minimum signal amplitude as well.

    -- Tom, N5EG




    On Wed, Jun 4, 2014 at 7:33 PM, jason sam <address@hidden

    <mailto:address@hidden>> wrote:

        Hi,
        In GRC is it necessary that we give a signal to any sink having
        an amplitude greater than 1?
        Regards,
        Ali

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