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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

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

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

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

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

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

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

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

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

我们要多久给4294A做一次性能检测?
我们建议每年一次,当然也视客户的具体使用次数和使用环境不同而不同。

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

Keysight 34951A D/A转换器在生成AC信号时需要稳定时间吗?
是的。该稳定时间取决于AC波形的点数和负载类型。

FAQ 2007-11-18

Keysight 11764A驱动电缆有哪些可用的替代产品?
11764-60004

FAQ 2007-11-14

如何才能将34980A更新到固化软件版本2.19?

FAQ 2007-11-04

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

标准的同轴连接器和精密的无缝连接器(PSC)有什么不同?
精密的无缝阴触头可降低连接器接触面的反射不确定性。 无缝触头是在不改变阴头中心连接器外径的情况下与匹配的阳性引脚进行电气连接。

FAQ 2007-01-22

Can the 34980A automatically open or close Switches based on Alarm Conditions?
Yes. The 34980A can use the Sequence feature to allow the instrument to automatically open or close switches in the event of an alarm.

FAQ 2007-01-11

What is the Temperature Measurement Range of the Keysight 34307A Thermocouples?
Use the specifications of the Omega Engineering Inc thermocouple wire with part number TT-J-24.

FAQ 2007-01-09

Keysight N9397C固态开关的典型1 dB压缩点是多少?
2.0 GHz时典型的、非保证、非指定1dB增益压缩点是+26 dBm。

FAQ 2006-11-05

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