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Technical Support

Electronic Measurement

Find by Product Model Number: Examples: 34401A, E4440A

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8920 versus 8921

FAQ 2003-11-04

89400 and OQPSK Demodulation

FAQ 2003-11-04

8903A, 8903B, 8903E Comparison

FAQ 2003-11-04

Why are the tracking generator menu keys greyed-out on my ESA Series Spectrum Analyzer?
Try increasing your resolution bandwidth setting.

FAQ 2003-06-18

What Radio configurations do the PSA/E4406A support for the Option B78 cdma2000 measurement in the reverse link?
Radio Configuration 3,4,5 (It does not support Radio Configuration 1 or Radio Configuration 2 used in cdmaOne).

FAQ 2003-06-11

66xxA, 68xxA and E36xxA: Switching vs. Linear Power Supplies

FAQ 2003-06-04

Why do I see a real value during a 4-wire ohm measurement when the test leads are open on the Keysight 34401A?
When making 2 wire ohm measurements the source and sense leads are connected together internally and can be driven into an overload situation.

FAQ 2003-06-04

66xxA: Power Supplies with Inductive Loads

FAQ 2003-06-04

66xxA: Down programming

FAQ 2003-06-04

What is an "Integrating A-to-D" and what are its benefits?
Much of the Keysight 34401A's excellent measurement performance can be attributed to its integrating analog-to-digital converter (ADC).

FAQ 2003-06-03

33120A: Output BNC Connector

FAQ 2003-06-03

What settings does the ESA Spectrum Analyzer use when first switched on or when preset is pressed?
The instrument will return to the factory defaults unless you have set up a user defined preset.

FAQ 2003-05-13

It appears that iFTA may sometimes log duplicate Normal Mode Summaries. What is happening?
This may occur when confirmation messages from iFTA are not received by the radio in time to prevent a duplicate summary from being sent.

FAQ 2003-01-24

The Keysight 3852A and Multiple Interrupts

FAQ 2002-11-27

On the E8404A why doesn''t the fan return to "65%" level when I turn the fan switch to FULL and then back to VAR in an empty frame?
The Enhanced Monitor's fan controller is always concerned about rapid temperature increases.

FAQ 2002-09-17

The E8404A Enhanced Monitor makes many measurements. How do I access this information about the mainframe?
Many of the measurements taken are displayed in abreviated format on the front panel display.

FAQ 2002-09-17

Why are there two temperature limits per slot on the Keysight E8404A?
The two limits really have two different jobs.

FAQ 2002-09-17

Has latency improved in the Keysight E8491B compared to the Keysight E8491A?
No. It still requires 100-200 microseconds per E8491B transfer.

FAQ 2002-09-17

The OHCI PC Plug-in card includes a power cable that ships with a E8491B. What does the power cable do?
The power cable supplies the host PC power which is required by the OHCI card.

FAQ 2002-09-17

Will applications written using the E8491A run using the E8491B?
Yes.

FAQ 2002-09-17

What are key factors that make the E8491B faster than the E8491A?
New OHCI, PC plug-in cards include 2 kbyte buffers. This is 4 times larger than previous cards' 500 byte buffer. So, each transfer can be 4 times larger.

FAQ 2002-09-17

When I switch the E8404A front panel fan switch to its VAR position, I am handing control of the mainframe's fans over to the Enhanced Monitor. Hav...
No, you have not. The Enhanced Monitor will control the fan based on your instructions issued to it through the slot temperature limits you set.

FAQ 2002-09-17

What Is OHCI?
Open Host Computer Interface (OHCI) is defined by the IEEE-1394 trade association.

FAQ 2002-09-17

Can I tell the E8404A Enhanced Monitor to take a measurement?
No. The Enhanced Monitor monitors over 80 signals throughout the mainframe every two seconds.

FAQ 2002-09-17

On the E1432/33 is it possible to set up the anti-aliasing filters on each channel independently?
No. There are commands in the help text that appear to allow you to do this, but reading the fine print shows you that these functions have been not implemented, so at this point they actually do nothing.

FAQ 2002-09-12

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