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R&S ESU
Instrument Functions
Basic Settings
4.266
Operating Manual 1302.6163.12 - 03
4.9.3.3
Preamplification and Preselection
In the frequency range up to 3.6 GHz, R&S ESU offers a preselection with switch-
able preamplifier which can be selected by the user in the analyzer mode. The pre-
selection is always active in the receiver mode.
The 20 dB preamplifier is available only if the preselection is switched on.
Preselection
The frequency range 20 Hz to 3.6 GHz is distributed over 12 filter bands.
Two fixed-tuned filters are used up to 2 MHz, eight tracking passband and high-pass
filters from 2 MHz to 2000 MHz and two fixed-tuned high-pass filter above 2 GHz.
The filters are switched by a relay at 150 kHz and by PIN-diode switches above
150 kHz.
Fig. 4.17 Preselection and preamplifier
PRESELECT
ON/OFF
The
PRESELECT ON/OFF
softkey switches the preselection on or off.
The softkey is available only in the analyzer mode.
Remote command:
INP:PRES ON
Preselection causes additional dependencies which are automatically taken into
account in the coupled setting.
• With the preselection active, the FFT bandwidths are not available.
Содержание ESU Series
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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...
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