Tektronix WCA200A, Руководство пользователя

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Setting Frequency and Span
3- 124
WCA230A & WCA280A User Manual
Frequency Setting Range
Frequency bands are defined as shown in Table 3--17, based on the analyzer
hardware architecture. The frequency band is switched automatically by a
frequency setting. Span setting range depends on the frequency band and the
measurement mode (S/A, Demod, or Time).
Table 3- 17: Frequency and span setting range
Measurement mode Frequency band Frequency range Span setting range
S/A (except real-time) Baseband DC to 20 MHz 50 Hz to 20 MHz (1-1.2-1.5-2-2.5-3-4-5-6-8 sequence) / ( p )
RF (WCA230A) 15 MHz to 3 GHz
RF1 (WCA280A) 15 MHz to 3.5 GHz
50 H t 3 GH (1 1 2 1 5 2 2 5 3 4 5 6 8 )
RF2 (WCA280A) 3.5 to 6.5 GHz
50 Hz to 3 GHz (1-1.2-1.5-2-2.5-3-4-5-6-8 sequence)
RF3 (WCA280A) 5 to 8 GHz
Real Time S/A Baseband DC to 20 MHz 100 Hz to 20 MHz (1-2-5 sequence) /
Demod, Time
RF (WCA230A) 15 MHz to 3 GHz
RF1 (WCA280A) 15 MHz to 3.5 GHz
100 Hz to 10 MHz (1 2 5 sequence) and 15 MHz
RF2 (WCA280A) 3.5 to 6.5 GHz
100 Hz to 10 MHz (1-2-5 sequence) and 15 MHz
RF3 (WCA280A) 5 to 8 GHz
In Demod and Time modes, the frequency and span settings must meet the
following conditions:
(Center frequency) + (Span)/2
≤
Upper limit of the frequency setting range (RF mode)
≤
40 MHz (Baseband)
(Center frequency) -- (Span)/2
≥
Lower limit of the frequency setting range (RF mode)
≥
0 Hz (Baseband)
When you enter an out-of-range value, the value is limited based on these
conditions. In spectrum analyzer mode, the out-of-range values are allowed, but
part of the trace may not be displayed because the analyzer cannot acquire that
part of the waveform (see Figure 3--85).