How to Use the Burst Function of HDG6000B?

WisdomAugust

? When the Internal trigger source is selected, the specified number of cycles is output continuously at

a rate determined by the burst period setting. The burst period defines the interval between bursts.

? When the Internal trigger source is selected, the burst count must be less than the product of the burst

period and the waveform frequency as shown below.

Burst Count < Burst Period X Waveform Frequency

? The function generator will automatically increase the burst period up to its maximum value to

accommodate the specified burst count (but the waveform frequency will not be changed).

? When the gated burst mode is selected, the burst count is ignored.

? Front-Panel Operation: To set the burst count, press the N Cycles softkey and then use the

knob or numeric keypad to enter the count.

To select an infinite count burst instead, press the Inf Cycles softkey.

WisdomAugust

Burst Count

The burst count defines the number of cycles to be output per burst. Used in the triggered burst mode

only (internal or external source).

? Burst count: 1 to 2, 000, 000, 000 cycles, in 1 cycle increments. You can also select an infinite burst

count. The default is 1 cycle.

WisdomAugust

Waveform Frequency

The waveform frequency defines the repetition rate of the burst waveform in the triggered and external

gated modes. In the triggered mode, the number of cycles specified by the burst count is output at the

waveform frequency. In the external gated mode, the waveform frequency is output when the external

gate signal is true.

Keep in mind that the waveform frequency is different than the “burst period” which specifies the interval

between bursts (triggered mode only).

– Waveform frequency: 1 mHz to 200 MHz (HDG6202B) (limited to 200 kHz for ramp waveforms). The

default waveform frequency is 1kHz. (For an internally triggered burst waveform, the minimum frequency

is 2.001 mHz.) You can select a sine, square, or ramp waveform (pulse, noise, dc, and arbitrary waveforms

are not allowed).

– For sine and square waveforms, frequencies above 3 MHz are allowed only with an “infinite” burst count.

– Front-Panel Operation: To set the waveform frequency, press the Freq softkey for the selected function.

Then use the knob or numeric keypad to enter the desired frequency.

WisdomAugust

Gated Burst

When the gated mode is selected, the burst count, burst period, and trigger source are ignored (these

parameters are used for the triggered burst mode only). If a manual trigger is received, it is ignored and

no error will be generated.

When the gated mode is selected, you can also select the polarity of the signal on the front-panel

Sync/Mod/Trig connector.

Front-Panel Operation: After enabling bursts, press the N Cycle (triggered), Inf Cycle or Gate softkey.

To select the polarity of the external gate signal on the Sync/Mod/Trig connector, press the Polarity

softkey. The default polarity is Positive.

WisdomAugust

Gated Burst ( External Gated Burst Mode)

In this mode, the output waveform is either “on” or “off ” based on the level of the external signal applied

to the front-panel Sync/Mod/Trig connector. When the gate signal is true, the function generator outputs

a continuous waveform. When the gate signal goes false, the current waveform cycle is completed and

then the function generator stops while remaining at the voltage level corresponding to the starting burst

phase of the selected waveform. For a noise waveform, the output stops immediately when the gate signal

goes false.

Gated Burst

WisdomAugust

Infinite Cycle Burst (Triggered Burst Mode)

In this mode , the function generator outputs continuous waveforms with a infinite number of cycles

after receiving trigger signal. You can configure the function generator to use an external trigger by

applying a trigger signal to the front-panel Sync/Mod/Trig connector, or sending an trigger command

manually by pressing the front-panel Trigger key.

Infinite Cycle Burst

WisdomAugust

N Cycle Burst (Triggered Burst Mode)

In this mode (default), the function generator outputs a waveform with a specified number of cycles

(burst count) each time a trigger is received. After the specified number of cycles have been output,

the function generator stops and waits for the next trigger. You can configure the function generator

to use an internal trigger to initiate the burst or you can provide an external trigger by applying a trigger

signal to the front-panel Sync/Mod/Trig connector, or sending an internal trigger command manually

by pressing the front-panel Trigger key.

N Cycle Burst (Internal Trigger)

WisdomAugust

Burst Type


You can use burst in one of three modes as described below. The function generator enables one burst
mode at a time based on the trigger source and burst source that you select (see the table below).

WisdomAugust

To Select Burst

Press Burst key to output a burst using the present settings for frequency, output amplitude, and offset voltage. (the backlight of the key goes on)

Note:

A. The function generator will not allow burst to be enabled at the same time that sweep or any modulation mode is enabled. When you enable burst, the sweep or modulation mode is turned off.

B. You must enable burst before setting up any of the other burst parameters.

WisdomAugust

Produce a burst using arbitrary waveform.

The Arb key light when using arbitrary wave.

Burst display on generator when using arbitrary wave.

Display on oscilloscope when using arbitrary wave.