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Operating Manual 1302.6163.12 - 03
4.21
R&S ESU
Receiver Mode
4.5.3
Setting the IF Bandwidth – BW Key
R&S ESU offers the IF bandwidths (3 dB bandwidths) from 10 Hz to 10 MHz avail-
able in steps of 1/2/3/5/10 and the IF bandwidths (6 dB bandwidths) 10 Hz, 100 Hz,
200 Hz, 1kHz, 9 kHz, 10 kHz, 100 kHz, 120 kHz, and 1 MHz.
The resolution bandwidths up to 120 kHz are implemented by digital Gaussian
bandpass filters. Concerning the attenuation characteristic, the filters behave like
analog filters, but their measurement speed is much higher than the measurement
speed of comparable analog filters. This is due to the fact that the transient
response can be compensated because the filters have an accurately defined
behavior.
Bandwidths of 200 kHz and higher are implemented by decoupled LC filters. These
filters contain 5 filter circuits.
BW
The
BW
key calls a menu for setting the resolution bandwidth (
RES BW
) for the
receiver.
RES BW
The
RES BW
softkey activates the manual entry mode for the resolution bandwidth.
For filter type NORMAL (3dB), the bandwidth can be set from 10 Hz to 10 MHz in
steps of 1/2/3/5/10. For filter type EMI (6dB), the 6-dB bandwidth 10 Hz, 100 Hz, 200
Hz, 1kHz, 9 kHz, 10 kHz, 100 kHz, 120 kHz, and 1 MHz can be set. Softkeys are
only available for the CISPR bandwidths 200 Hz, 9 kHz a nd 120 kHz and for the 6-
dB bandwidth 1 MHz. The other bandwidths have to be set by numerical input or by
rotary knob..
For numerical inputs, the values are always rounded up to the next valid bandwidth.
For rotary knob or the
UP/DOWN
key entries, the bandwidth is adjusted in steps
either upwards or downwards.
For the CHANNEL and RRC filter types, the bandwidth is selected from a list of
available channel filters, which is included at the end of this section. The list can be
scrolled with the
U
u
and
U
d
keys to select a filter (see section
Содержание ESU Series
Страница 1: ...R S ESU EMI Test Receiver Operating Manual 1302 6163 12 03 Test Measurement Operating Manual...
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Страница 27: ...R S ESU Putting into Operation 1 2 Operating Manual 1302 6163 12 03...
Страница 29: ...R S ESU Getting Started 2 2 Operating Manual 1302 6163 12 03...
Страница 31: ...R S ESU Manual Operation 3 2 Operating Manual 1302 6163 12 03...
Страница 349: ...R S ESU Instrument Functions Basic Settings 4 318 Operating Manual 1302 6163 12 03...
Страница 405: ...R S ESU Instrument Functions User Port 4 374 Operating Manual 1302 6163 12 03...
Страница 439: ...R S ESU Remote Control Basics Status Reporting System 5 34 Operating Manual 1302 6163 12 03...
Страница 821: ...R S ESU Remote Control Programming Examples More Complex Programming Examples 7 32 Operating Manual 1302 6163 12 03...
Страница 841: ...R S ESU Error Messages Device Specific Messages 9 10 Operating Manual 1302 6163 12 03...
Страница 854: ...Operating Manual 1302 6163 12 03 10 13 R S ESU...
Страница 855: ...R S ESU 10 14 Operating Manual 1302 6163 12 03...