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When utilizing Save/Recall on the E4991A file names are limited to six characters. Is there a method to save/recall files with longer names?

FAQ 2010-07-12

Is there any effective way to measure the impedance of a pressure sensitive SMD component (ex. a ferrite bead) with the 16196 series or 16197A test...
In order to measure a pressure sensitive device, the pressure applied to the DUT by the test fixture needs to be carefully controlled.

FAQ 2010-07-02

In the 4395A/4396B NA mode, the "dB" expression is used instead of the "dBm" even when the meas. parameter is set to absolute power amplitude.
Please regard the displayed "dB" as "dBm".

FAQ 2010-07-02

Error message "PHASE LOCK LOOP UNLOCKED" could be displayed, when the 4294A using an external ref. osc (opt.1D5 or other 10 MHz output) is ON.
The message is removed when any key of the front panel except [Preset]. In this case, the unit works properly.

FAQ 2010-07-02

Why is Sweep Delay Time of the 4294A prolonged when DC bias is set to ON?
The DC bias source inside the 4294A requires a certain settling time before starting a sweep measurement.

FAQ 2010-07-02

How can I connect a test fixture to the measurement terminals of the E4980A when the stopper at the rear of the fixture disturbs the connection?
Remove the stopper from the test fixture by removing a screw at the center of the plastic stopper. Otherwise, remove the front rubber guide from the E4980A.

FAQ 2010-07-02

Can 4263B preserve Open/Short/Load correction data by using Save/Recall function?
No.

FAQ 2010-07-02

The 4294A displays a caution "Reduce OSC level" or "Bridge Unbalanced" in Fixture COMP [Short] with 1V OSC level. Is the compensation still valid?
No, the SHORT COMPEN value is invalid. The 4294A cannot measure DUT impedance below 48 ohms at OSC level setting over 500 mV.

FAQ 2010-07-02

Why is there a step (discontinuity) on the trace of noise floor around 10 MHz in 4395A's SA mode even when no signal is input into the test port?
This phenomenon is caused by a change in circuit operation of the 4395A at 10 MHz.

FAQ 2010-07-02

Why is Rp or G measurement value unstable when pure water is measured with the 16452A?
There are two conceivable causes of unstable measurement results. One of primary causes is a change in temperature of pure water sample measured. The other is a slight pollution which resides on the electrode surfaces.

FAQ 2010-07-02

Does typical permittivity measurement accuracy includes all the uncertainties due to the E4991A with opt 002, 16453A and MUT insertion conditions?
Yes. All the uncertainties are included in the typical measurement accuracy.

FAQ 2010-07-02

Does Sweep End signal output on 24-bit I/O port of the 4294A have similar definition as End of Measure (EOM) signal on LCR meters?
Sweep End signal means the end of entire sweep measurement, not the end of measurement at each sweep point.

FAQ 2010-07-02

Why does the DC resistance measurement function of the 4287A require to be calibrated at the same time with Open/Short/Load calibration?
The specified accuracy for the DC resistance measurement is applied when the Open/Short/Load calibration for the DC resistance measurement is performed.

FAQ 2010-07-02

How can I get DC bias current resolution of 20 mA in the 1 A to 2 A range when the E4980A-002 is used with 2 units of the 42841A?
The bias current resolution has been improved on the E4980A with firmware revision 2.12 and above. If your E4980A has firmware revision 2.10 or below, upgrade the firmware to revision 2.12 or above.

FAQ 2010-07-02

Why don't the E4991A and 4287A have Load compensation function?
Performing Load compensation in addition to Open/Short compensation is equivalent to performing Open/Short/ Load calibration at DUT contacts of test fixture (by using the working standard devices).

FAQ 2010-07-02

The 16085B 4-Terminal Pair to 7 mm (APC-7) adapter: Is it advisable to use fixture compensation standards or coaxial calibration standards?

FAQ 2010-07-02

Can I have criteria or a list of non-applicable liquid materials for the 16452A?
Avoid measuring acidic, alkaline and ionic materials with the 16452A.

FAQ 2010-07-02

Why cannot I control TEST SET ATTEN PT1 and PT2 functions in ATTENUATOR MENU when the 87511A S-parameter test set is used with the 4395A?
The TEST SET ATTEN PT1 and TEST SET ATTEN PT2 functions cannot be controlled because the 87511A is not equipped with input attenuators.

FAQ 2010-07-02

The marker list function in the NA mode of the 4395A/4396B displays "EXTRA" value in the list below Smith chart. What does this value stand for?
It stands for equivalent capacitance or inductance.

FAQ 2010-07-02

How should I perform Adapter Setup procedure when using the 16334A with the 4294A?

FAQ 2010-07-02

The 4395A with the 41800A Active Probe or the 41802A 1 MΩ Input Adapter: Is any calculation required for converting the data for 50 Ω input?
No, any conversion calculation related to the difference in input impedance (between 1 MΩs and 50 Ωs) is not required. You can directly read the measurement value on the 4395A.

FAQ 2010-07-02

The E4980A/4284A display much lower resistance values than DUT's DC resistance when measuring high-value resistors in Mega-ohms region.
Set the measurement function to Cp - Rp mode to measure high resistance properly.

FAQ 2010-07-02

Why does measurement data exhibit a discontinuity at 5 MHz or 15 MHz and how can the 4294A get rid of this phenomenon?
The 4294A extends its measurement frequency range up to 110 MHz by terminating each measurement terminal with 50 ohm in order to eliminate the resonance of test leads (including leads inside the 4294A).

FAQ 2010-07-02

What are primary differences between the E4991A and 4291B?
The major difference is frequency range. E4991A: 3 GHz, 4291B: 1.8 GHz.

FAQ 2010-07-02

What is the 4294A's GPIB command to read sweep frequency data though OUTPDATA command transfers only measurement data?
"OUTPSWPRM" or "OUTPSWPRMP" are the commands to read out the sweep parameters according to the number of points.

FAQ 2010-07-02

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