Agilent Technologies N6705 Dokumentacja Pobierz pdf (Strona 7)

Each DC power output on the

Agilent N6705 DC power analyzer

can be modulated by the module’s

built-in arbitrary waveform genera-

tor function. This permits the DC

output to act as a DC bias tran-

sient generator or power arbitrary

waveform generator. The maximum

bandwidth is based on the type of

module that is installed (basic, high-

performance, precision, and SMU).

See page 21 for a table that lists the

bandwidth for each DC power mod-

ule type.

The Agilent N6705 uses run length

encoding, where each point in the

waveform is defined by the volt-

age setting and the dwell time

or duration to stay at that setting.

Waveforms can be generated by

specifying only a small number of

points. For example, a pulse would

only take three points to define it.

The Agilent N6705 offers the

following waveform choices:

For each waveform, you can set it

to repeat continuously or you can

specify the number of times the

waveform is repeated. For example,

to generate a pulse train of 10 iden-

tical pulses, you can program the

parameters for one pulse and then

specify that you want it to repeat

10 times.

For the user defined voltage and cur-

rent waveforms, you can download

up to 512 set-points of voltage or

current. For each set-point, a dwell

time is specified and output will

stay (i.e., dwell) at that set-point for

the programmed dwell time value.

For each of the 512 set-points in

the user defined waveform, you can

have a different dwell time from 0

to 262 seconds with 1 microsecond

resolution. The module will step

thru the user defined table of val-

ues, staying at each set-point for

the programmed dwell time, and

then it will move on to the next

point. User defined waveforms

can be imported from a CSV file or

directly entered from the front panel

of the DC power analyzer.

Arbitrary Waveform Generator

Waveform Number of points per waveform

Sine 100 points

Step 2 points

Ramp 100 points

Pulse 3 points

Stepped ramp (or staircase) Determined by number of steps you program

Exponential 100 points

User defined voltage waveform Up to 512 points with point-by-point

(where the output is a voltage source) adjustable dwell

User defined current waveform Up to 64,000 points with programmable dwell

(where the output is a current source) (same for all points)

Figure 8. The Arb Selection menu is

used to select which pre-programmed

waveform will be applied to the output of

the DC Power Module. Each of the four

outputs can have a different waveform

applied.

Figure 9. Once you’ve selected a

waveform, you simply fill in the blanks to

describe the waveform.

1 2 3 4 5 6 7 8 9 10 11 12 ... 31 32

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