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T ips f or Selec ting A ppropr iate Ac ce s sor ies c ont inued 7 . T erminal adap ters T ermina l Adap ter s conver t the in str ument s termina l conf igur ation int o a 7 mm terminal c onf igura - tion. T his me ans t…

3. Frequency, DC bias, and operating temperature/humidity

each of the Keysight accessories has its own specific operating range. Any measurement

performed outside this range can increase residual errors and can cause problems. Be

sure that your measurement environment fits the accessory’s specific operating range.

In the case of humidity, Keysight’s accessories can operate at a relative humidity of 95%

or less at 40°C. (These same requirements apply to most LCR Meters and Impedance

Analyzers.) When the ambient temperature is not approximately 40°C, use an accessory

that has no condensation on its surface.

4. DUT (device under test) dimensions

The DUT can vary from chip components, axial/radial leads, or ICs to general electrical

materials. Select a test fixture/lead that is suitable for the shape and size of your

components or materials.

5. Open & short repeatability and proportional error

Since a test fixture induces an additional error when measuring, the total measurement

error is the sum of the measurement instrument’s measurement accuracy and the

fixture’s additional error. Generally, a test fixture’s additional error consists of three

terms: open repeatability, short repeatability and proportional error. Open and short

repeatability exhibit the error factors of the open and short residual impedances which

affect the measurements of extremely high and low impedances respectively. Propor-

tional error exhibits the error factor, which is proportional to the value of the impedance

being measured. For more details on this subject, please refer to the Appendix.

6. Furnished accessories

Each test fixture is shipped with a manual and various other accessories needed for

measuring. For example, the 42941A impedance probe kit is furnished with a pin probe,

an adapter (BNC-SMA), 3 spare pins, a carrying case and an operation and service

manual.

Tips for Selecting Appropriate Accessories continued

04 | Keysight | Accessories Catalog for Impedance Measurements - Catalog

Tips for Selecting Appropriate Accessories continued

7. Terminal adapters

Terminal Adapters convert the instruments terminal configuration into a 7 mm terminal configura-

tion. This means that instruments that do not have a 7 mm terminal connector can use test

fixtures with a 7 mm terminal connector. The 42942A converts a 4-Terminal Pair configuration

into a 7 mm terminal connector, which can only be used with the E4990A*.

42942A Terminal adapter

Dimensions (approx.):

190 (W) x 55 (H) x 140 (D) [mm]

Weight (approx.): 800 g

Applicable instrument: E4990A*

Frequency: 20 Hz to 120 MHz

Maximum voltage: ±42 V peak max. (AC +DC)

Operating temperature: 0to 40°C

Furnished accessories:

Options:

42942A-700: Add 7 mm open/short/load set

Description P/N Qty.

Carrying case 42942-60011 1

Operation and service manual 42942-90020 1

* Option E4990A-120 is required

Description P/N Qty.

Open termination 04191-85302 1

Short termination 04191-85300 1

Load termination 04291-60043 1

05 | Keysight | Accessories Catalog for Impedance Measurements - Catalog

Accessories Catalog

Frequency range

DC 1 k1 M 10 M 100 M1 G [Hz] 2 G [Hz] 3 G [Hz]

16047A 13 M

16047E 120 M

16034E 40 M

16034G/H 120 M

16334A 15 M

16089A/B/C 5

100 k

16048A/D 30 M

16048E 2 M

16048G/H 120 M

42941A 120 M

16065A 50

2 M

16065C 100 1 M

16451B 30 M

16452A 20 30 M

16092A 500 M

16192A 2 G

16194A 2 G

16196A/B/C/D 3 G

16197A

3 G

16198A

1 M

16200B

1 M 1G

16453A

16454A

1 k 1G

: When 42942A is used.

Applicable frequency ranges

06 | Keysight | Accessories Catalog for Impedance Measurements - Catalog