Keysight B2961A/B2962A User’s Guide, Edition 3 3-19
Installation
Connecting a DUT
Using the Low Noise Filter
The following filters are available for the B2961A/B2962A to apply low-noise and
clean output signal. See Figure 3-6 for their top and connector panels. Also see
“Output Filter and External Filter” on page 6-12 for more information.
• Keysight N1294A-020 High Current Ultra Low Noise Filter
Maximum voltage/current: 21 V / 500 mA (DC)
Output: BNC
• Keysight N1294A-021 Ultra Low Noise Filter
Maximum voltage/current: 42 V / 105 mA (DC)
Output: BNC
• Keysight N1294A-022 Low Noise Filter
Maximum voltage/current: 210 V / 3 A (DC)
Output: Banana
Preparation To use the low noise filter, perform the following procedure. This setting is saved to
the non-volatile memory.
1. Press the Config > Source > Ext. Filter function keys. This opens the External
Output Filter dialog box.
2. Set the External Filter State field to ON.
3. Specify the type of the used filter on the External Filter Type field. Then press
one of the following assist keys.
HC-ULNF: High current ultra low noise filter (N1294A-020)
ULNF: Ultra low noise filter (N1294A-021)
LNF: Low noise filter (N1294A-022)
4. Press the OK softkey.
The following indicator appears on the Single view or the Dual view. And then
the filter can be connected to the output terminal.
: High current ultra low noise filter (N1294A-020)
: Ultra low noise filter (N1294A-021)
: Low noise filter (N1294A-022)
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