3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
–
"Controls in the CISPR Group" on page 425
–
"Band Setup" on page 425
–
"Sweep Points in Band E" on page 426
Remote
Command
[:SENSe]:FREQuency:CISPr:BAND A | B | C | CD | D | E
Example
:FREQ:CISPR:BAND A
activates the CISPR preset for Band A
Couplings Selecting a CISPR preset sets the EMI Standard to CISPR, performs an autocouple all, and sets the Y
Axis Unit to dBµV (unless dBuV is grayed-out, in which case it will leave the Y Axis Unit unaffected)
Controls in the CISPR Group
This group contains controls to set the following Presets:
–
CISPR A 9 kHz – 150 kHz
–
CISPR B 150 kHz – 30 MHz
–
CISPR C 30 MHz – 300 MHz
–
CISPR C/D 30 MHz – 1 GHz
–
CISPR D 300 MHz – 1 GHz
–
CISPR E 1 GHz – 18 GHz
Band Setup
The number of sweep points for each band is roughly calculated by the formula 2*
(Stop Frequency-Start Frequency)/RBW, so that you get two points for every RBW
width. This number is increased as necessary to make it an odd integer, so that you
always end up with an odd number of sweep points. This is desirable so that you
always have a sweep point at the Center Freq.
Band Setup Band A Band B Band C Band D Band
C&D
Band E
Start
Frequency
9 kHz 150 kHz 30 MHz 300 MHz 30 MHz 1 GHz
Stop
Frequency
150 kHz 30 MHz 300 MHz 1 GHz 1 GHz Max freq of
instrument or
18 GHz,
whichever is
lower
Sweep Points 1411 6635 4501 11667 16167 See below
Spectrum Analyzer Mode User's &Programmer's Reference 425
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