Agilent Technologies E1441A user service Burst Modulation Commands, BM:NCYCles?, BurstCount

BURST MODULATION COMMANDS

Use the APPLy command or the equivalent FUNC:SHAP, FREQ, VOLT, and VOLT:OFFS commands to configure the carrier waveform. Set the carrier frequency between 100 ∝Hz and 5 MHz (100 kHz maximum for triangle and ramp). The default is 1 kHz.

BM:NCYCles

[SOURce:]BM:NCYCles <# cycles>INFinityMINMAX sets the number of cycles to be output per burst (counted burst mode only). Select from 1 cycle

to 50,000 cycles, in 1 cycle increments. The default is 1 cycle. MIN = 1 cycle. MAX = 50,000 cycles. [ Stored in volatile memory ]

Comments • For sine, square, and arbitrary waveforms (does not apply to ramp and triangle waveforms), the relationship between the carrier frequency and the minimum burst count is shown below.

Carrier Frequency		Minimum Burst Count
	10 mHz to 1 MHz	1
	>1 MHz to 2 MHz	2
	>2 MHz to 3 MHz	3
	>3 MHz to 4 MHz	4
	>4 MHz to 5 MHz	5
• If you attempt to set the carrier frequency to a value that is not valid,
the function generator will automatically adjust the frequency to the maximum
value allowed with the present burst count. A -221, “Settings conflict” error is
generated and the carrier frequency is adjusted.
• For all waveforms used with burst, if the carrier frequency is set less than or
equal to 100 Hz, the following relationship applies.
BurstCount
------------------------------------------------	≤
CarrierFrequency 500 seconds

•If you attempt to set the carrier frequency to a value that is not valid, the function generator will automatically adjust the frequency to the minimum value allowed with the present burst count. A -221, “Settings conflict” error is generated and the frequency is automatically adjusted.

BM:NCYCles?

[SOURce:]BM:NCYCles? [MINMAX] queries the burst count. Returns an integer between 1 and 50,000, or +9.90000E+37 (in the case of INF).

102 Agilent E1441A SCPI Command Reference Chapter 3