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Ca Keysight build my custom L4490A/L4491A solution?
Please visit "/find/AD-systems" or see Keysight’s Channel Partners and Solution Providers at "/find/channelpartner"

FAQ 2008-04-07

Does the L449XA switch tray support Keysight RF switches?
Yes, see data sheet.

FAQ 2008-04-04

How does the L449XA switch closure counter work?
It counts each operation of the switch (open + close) and is stored in non-volatile memory of the instrument.

FAQ 2008-04-04

Can I mount a fan in the L449XA mainframe for cooling?
Yes, there is a fan mounting location on the rear panel for a 60mm (50mm mounting hole-to-hole spacing).

FAQ 2008-04-04

Does Keysight offer L449XA mounting brackets for Keysight switches?
Yes, see data sheet.

FAQ 2008-04-04

What DC power is available on the L449XA?
The L449XA can provide 5V/1A, 12V/3A, 24V/0.6A, max power is 42 watts.

FAQ 2008-04-04

How do I use the L449XA web browser?
Connect the L4490A directly to your computer or the network using the LAN interface. See complete answer for details.

FAQ 2008-04-04

What options should I order with my switches when using the L4490A/L4491A?
See the data sheet for recommended switch options.

FAQ 2008-04-04

Does the L449XA have USB? What interfaces are built in?
LAN and GPIB are included. The 82357B USB/GPIB converter is available if you require USB.

FAQ 2008-04-04

Does the L449XA mainframe have an RF shielding specification?
There is no spec for RF shielding.

FAQ 2008-04-04

How many switch sequences can I save in the L449XA and where are they stored?
Up to 500 switch sequences, each sequence up to 1024 bytes.

FAQ 2008-04-04

How does the L4490A/L4491A switch verification work?
The L4490A/L4491A reads back the electronic position from the switch and issues an error if it fails to close.

FAQ 2008-04-04

Are any of the L4491A mounting rails removable?
Yes, the L4491A mounting bays can be removed or a pre-drilled bottom plate is available by ordering option 006.

FAQ 2008-04-04

Does the L4490A/L4491A have LED indicators?
The L4490A/L4491A provides LED drive signals on the distribution boards.

FAQ 2008-04-04

How many instrument states can I save in the L449XA?
Five instrument states, but you have the ability to save up to 500 switch sequences.

FAQ 2008-04-04

Can I add another 34945EXT to the L449XA?
The L4491A option 002 is recommended if an additional 34945EXT is required.

FAQ 2008-04-04

Why does the L4490A/L4491A mainframe have two front panels?
The L4490A/L4491A comes with an inside panel for mounting components or connectors and an outside panel for silk screening.

FAQ 2008-04-04

How many multiport switches fit in the L449XA?
The L4490A can support up to 8 multiport switches. The L4491A can support 16 multiport switches.

FAQ 2008-04-04

Do I have to buy distribution boards for the L4490A/L4491A?
Yes, the distribution boards are required to route the control signals to the switches and attenuators.

FAQ 2008-04-04

How often should we perform the verification procedure described in the Performance Tests section of the manual?
Every 12 months.

FAQ 2008-01-31

How many ground connections do I need to make when using flying lead probes with a logic analyzer?
Generally speaking, the higher your data rate, the more ground connections you will need. We recommend that you use a minimum of one ground connection for every two signals

FAQ 2008-01-07

Does the Keysight 34951A D/A Converter require a Settling Time for Generated AC Signals?
Yes. Settling time depends on the number of points of the AC waveform and the type of load.

FAQ 2007-11-18

What is the replacement for the Keysight 11764A drive cable?
11764-60004

FAQ 2007-11-14

What are the differences between the BenchLink DataLogger software for 34970A and 34980A?

FAQ 2007-07-20

Who can I contact for spectrum analyzer mixer capabilities above 110 GHz?

FAQ 2007-01-24

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