Keithley 6221/2182A/E Digital-Multimeter, DMM, 6221/2182/A/E Ficha De Dados

Códigos do produto

6221/2182/A/E

W L

L M

E & S

www.keithley.com

1.888.KEITHLEY

(U.S. only)

A Greater Measure of Confidence

figure 4. The Model 6221 and the free

example start-up control software make it

easy to create complex waveforms by adding,

multiplying, stringing together, or applying

filters to standard wave shapes.

The Model 6221 can also expand the capabilities

of lock-in amplifiers in applications that already

employ them . For example, its clean signals and

its output synchronization signal make it an

ideal output source for lock-in applications such

as measuring second and third harmonic device

response .

Model 2182a Nanovoltmeter
The Model 2182A expands upon the capabilities

of Keithley’s original Model 2182 Nano volt-

meter . Although the Model 6220 and 6221 are

compatible with the Model 2182, delta mode and

differential conductance measurements require

approximately twice as long to complete with

the Model 2182 as with the Model 2182A . Unlike

the Model 2182A, the Model 2182 does not sup-

port pulse mode measurements .

Source Current

1/60 second (1/50 when operating off 50Hz power)

Programmable: 50

µs to 12ms

Measurement integration period

Measuring difference voltage eliminates

line frequency noise, DC offsets

Voltage measurement noise at line frequency

Measured response voltage

Pulsed measurement without line sync

Line synchronized pulse measurements

figure 3. Measurements are line synchronized to minimize 50/60Hz interference.

•

aPPlICaTIoNs of

622X/2182a CoMbINaTIoN:

•

Easy instrument coordination and

intuitive example software simplifies

setup and operation in many

applications.

•

Measure resistances from 10n

W to

100M

W. One measurement system

for wide ranging devices.

•

Low noise alternative to AC

resistance bridges and lock-in

amplifiers for measuring resistances.

•

Coordinates pulsing and

measurement with pulse widths as

short as 50µs (6221 only).

•

Measures differential conduc-

tance up to 10× faster and with

lower noise than earlier solutions

allow. Differential conductance is

an important parameter in semi-

con ductor research for describing

density of states in bulk material.

•

Delta mode reduces noise in low

resistance measurements by a factor

of 1000.

•

For low impedance Hall measure-

ments, the delta mode operation of

the Model 622X/2182A combination

provides industry-leading noise

performance and rejection of contact

potentials. For higher impedance

Hall measurements (greater than

100M

W), the Model 4200-SCS can

replace the current source, switching,

and multiple high impedance

voltage measurement channels. This

provides a complete solution with

pre-programmed test projects.

6220

6221

DC Current Source

AC and DC Current Source

Pre

our