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Can the state of channel be stored while it is still being actively monitored?
No. The instrument can store the configuration for all channels only while monitoring is OFF. Only measurement attributes of the currently-selected functions (range, resolution, etc) will be preserved in the stored states. If channel monitoring is ON during store / auto-recall execution, the instrument will not function correctly. To restore the instrument back to its initial working state, all modules slotted into the instrument must be removed and the auto-recall function turned OFF. Please refer to the user manual / service manual regarding the usage of the store/auto-recall function.

FAQ 2017-11-13

What is the current rating of the Y113xA cables?
The Y1135A and Y1136A cables are 50 conductor, 24 AWG cables with 25 shielded twisted pairs with PVC insulation. They can be used with the 34921A, 23A, 25A, 31A, 32A, 33A, 37A, 38A, 51A, and 52A plug-in modules for the 34980A. However, they do not support the full rated total current of the 34937A and 34938A. The Y1137A and Y1138A cables are 78 conductor cables 28 AWG conductors with 39 shielded twisted pairs. They can be used with the 34922A, 24A, 34A, 39A, and 34950A plug-in modules.

FAQ 2016-12-13

Where can I find manuals for discontinued and obsolete Hewlett-Packard, Agilent and Keysight test equipment?
Most Keysight products have PDF manuals that can be found on product pages. Other vendors also supply old manuals.

FAQ 2014-08-01

How do you clear the 34980A multifunction switch/measure mainframe and modules, L44xxA series LXI switch and control instruments memories?
Please refer to the documents for a comprehensive listing of memory installed into these products.

FAQ 2014-04-07

Can the L4490A/L4491A mainframe be password protected when using LAN?
Yes, instructions for using password protection can be found in the web interface.

FAQ 2014-04-07

My Keysight LXI based SICL / LAN instrument is timing out on the LAN connection under automation control. Is it possible to avoid this LAN timeout?
Yes, please access the LXI based instruments web server by entering the instruments IP address into a web browser. If the LAN has timed out it maybe necessary to cycle the power button.

FAQ 2014-01-28

Which 34980A Switch Modules are supported by the IviSwtch api?
All modules except the 34945A, 34950A, 34951A, 34952A, 34959A...

FAQ 2014-01-22

What components are included in the Keysight Y1159A cable kit?
The Keysight Y1159A is a 16 pin IDC to 16 pin IDC cable kit for the Y1150A, Y1151A, Y1152A, Y1153A, Y1154A and / or the Y1155A distribution boards. (See Chart)

FAQ 2013-12-11

What components are included in the Keysight Y1157A cable kit?
The Keysight Y1157A is a 9 pin DSUB to 10 pin IDC cable kit for the Y1150A, Y1152A and / or the Y1154A distribution boards. (See Chart)

FAQ 2013-12-11

What components are included in the Keysight Y1158A cable kit?
The Keysight Y1158A is a 10 pin IDC to 10 pin IDC or 10 pin IDC to 14 pin IDC cable kit for the Y1153A and / or the Y1154A distribution boards. (See Chart)

FAQ 2013-12-11

What is the maximum total length of the RJ45 control cable for connecting multiple 34945EXTs?
The maximum total length of the RJ45 control cables is 140 feet.

FAQ 2013-05-06

How do I view the 3D models that come with the L4490A/L4491A?
The L4490A/L4491A comes with .easm, .igs and .stp files that can be imported into your modeling application.

FAQ 2013-03-13

Where do I get Java to display the 34980A web interface?
The Java Virtual Machine code is needed to run the Keysight 34980A web page features. A free download of the Java Virtual Machine (JVM) can be obtained by going to the following web site.

FAQ 2012-12-17

Why do I get +943 "Remote module topology change" and +935 "Overcurrent detected" errors?
During operation, exceeding the 34945A, L4445A, or L4490A/L4491A internal switch drive power supply current specification of "100 mA continuous + 200 mA (15 ms pulse, 25% duty cycle)" can cause overcurrent conditions within the instrument’s power ...

FAQ 2012-07-17

How do I bypass 34923A protection resistors?
To bypass the 100 ohm resistors on the 34923A card, connect the jumpers according to the pictures below.

FAQ 2012-07-16

The Keysight 8761B SPDT Coaxial Switches are not listed in the "Keysight 34945A, L4445A and L4490A/L4491A Configuration Guide". Why?
Due to the 8761B’s internal design the RF path selection is achieved via DC polarity reversal across the coil control terminals. The Keysight 34945A, L4445A and L4490A/L4491A Control Units do not provide a polarity reversal mode. Thus the 8761B cannot be controlled by the 34945A, L4445A and L4490A/L4491A Control Units.

FAQ 2012-01-16

How to Synchronize Waveforms from Multiple 34951A Channels

FAQ 2011-04-29

How to Connect Keysight 849xG/H OPT 016 Step Attenuators to Y1153A

FAQ 2011-04-15

Why does the switch buzz when connected to the 11713B/C switch driver?
Precaution steps to prevent the switch buzz when connected to the 11713B/C switch driver.

FAQ 2010-12-06

How to monitor and scan on alarm with the 34980A?

FAQ 2010-10-04

How do you get the maximum 2000 rdgs/sec thermocouple measurement speed?

FAQ 2010-10-04

How do I locate the serial number for my 34980A Mainframe?
The serial number is located on the rear panel of the 34980A on the left of the LAN and USB connectors.

FAQ 2010-09-15

What type of switches/attenuators are supported by the 34945A/L4445A Microwave Switch/Attenuator Driver module?

FAQ 2010-09-08

How many interface cables does the 11713B/C attenuator/driver come with?

FAQ 2010-07-26

Why do I get verification error upon reset with single channel pulsed switches and Y1151A distribution board?
On this particular distribution board...

FAQ 2010-06-30

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