Tektronix RSA2200A, Руководство пользователя

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Trigger
3- 98
RSA2203A & RSA2208A User Manual
The IF trigger always observes the signal level of the IF bandwidth of approxi-
mately 15 MHz to determine trigger generation. Even if the span is
1 MHz, the bandwidth of approximately 15 MHz is the detection target of IF
trigger. Note that, as shown in Figure 3--74, any signal exceeding the trigger
level outside the range of 1 MHz of span activates the IF trigger even if no signal
exceeds the trigger level within the range of 1 MHz of span.
1 MHz span
15 MHz (IF trigger detection range)
Trigger level
Figure 3- 74: IF trigger detection range