Agilent Technologies E1439 manual FilterBW

Agilent E1439 Programmer's Reference

Functions listed alphabetically

decimate		filterBW	sample rate	BW fs=100	12b real	24b real	12b complex	24b complex
			(Msamples/s)	MHz
0		4	12.5	2.5	b,c,d	b,c,d	b,c,d	b,d
1		4	6.25	2.5	b,c,d	b,c,d	b,c,d	b,c,d
0		5	6.25	1.25	b,c,d	b,c,d	b,c,d	b,c,d
		b = block mode, continuos mode to fiber at the fiber transfer rate of 250 Mbytes per
		second.
		c = continuous mode to local bus
		d = continuous mode to fiber at the fiber transfer rate of 106 Mbytes per second.
spectralOrder	This parameter is intended for use only with the IF signal path, providing efficient and transparent
	compensation for the effect of down conversion on output data. It does not generate an error if it is
	set in baseband mode though spectralOrder remains AGE1439_NORMAL.

AGE1439_NORMAL means that the spectrum of the output data will be in the same spectral order as the input signal. That is, if the input signal increases in frequency from "right-to-left", so does the spectrum of the output data.

AGE1439_REVERSED means that the spectrum of the output data will be in the reverse spectral order from the input spectrum. That is, if the input signal increases in frequency from "right-to- left", the spectrum of the output data decreases in frequency from "right-to-left".

Changing the spectral order in multiple-module systems causes the LO to lose synchronization with the other modules. Thus, in multi-module systems, the LO’s need to be re-synchronized after this parameter is changed. See age1439_filter_setup for more information on synchronizing the LO.

spectralOrderPtr points to the current value of the spectralOrder for the current signal path. In baseband mode the returned value is always AGE1439_NORMAL.

Return Value

AGE1439_SUCCESS indicates that a function was successful.

Values other than AGE1439_SUCCESS indicate an error condition or other important status condition. To determine the error message, pass the return value to “age1439_error_message” on page 102.

See Also

“Commands which halt active measurements” on page 198, “Default values” on page 201, “age1439_init” on page 132, “age1439_frequency_setup” on page 128, “age1439_filter_setup” on page 120, “age1439_meas_control” on page 151, “age1439_clock_setup” on page 78

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