Tektronix RSA2200A, User Manual

Page: 201 / 354

Setting Amplitude
RSA2203A & RSA2208A User Manual
3- 81
The amplitude correction function includes amplitude and frequency offset.
NOTE
. The amplitude offset is available in all the measurement modes of S/A,
Demod, and Time.
Amplitude Offset. Subtracts the specified offset from the original amplitude (see
Figure 3--60). The offset value is set using the menu item AMPLITUDE
→
Corrections...
→
Amplitude Offset .
The operation varies slightly between the measurement modes as follows:
H
In the S/A mode (except real-time mode): The amplitude offset is effective
whenever the amplitude correction is turned on (
AMPLITUDE
→
Corrections...
→
Amplitude Table
→
On ) even if the table is not set.
H
In the other modes (Real Time S/A, Demod, and Time): The amplitude offset
is always effective. The default value is zero. If you set the offset to a
non-zero value, a waveform shifts vertically as shown in Figure 3--60.
(Amplitude of a displayed waveform)
= (Amplitude of an acquired waveform) -- (Amplitude offset value)
Amplitude offset
Figure 3- 60: Amplitude offset
Frequency Offset. Shifts the correction range by the specified offset with the
same correction table (see Figure 3--61). The offset value is set using the
AMPLITUDE
→
Corrections...
→
Frequency Offset menu item.
Correction range specified
in the correction table
Correction range after the
frequency offset
Frequency offset
(1 GHz in this example)
1 GHz 2 GHz
Frequency
Figure 3- 61: Frequency offset
Setting the Offset