Tektronix AWG2021 User Manual page 546

X5 Amplifier
Attenuator
AWG2021 User Manual
Table E 3: Filter Timer Delay Relative to SYNC
Signals (Cont.)
Filter
20 MHz
50 MHz
Through
Figure E-15 shows the time difference (t) between signals and SYNC signals.
SYNC Signal
Signal
Figure E 15: Time Difference Between Signals and SYNC Signals
Time Difference from Markers. Markers are written as data into waveform memory
in the same manner as waveform data, but since the waveform goes through
amplifiers and other elements, it is output somewhat after the marker. Applying a
filter to the waveform increases this time delay. This delay is about the same as
the delays relative to the sync signals given in Table E-3.
When the output amplitude is 0.501 V or greater, a x5 amplifier is inserted in the
signal path. The waveform is affected by passing through this x5 amp, and some
error is generated. If high precision waveform output is required, hold the output
amplitude below 0.501 V.
This block comprises two –3 dB attenuators, one –10 dB attenuator, and one
–20 dB attenuator.
Including the amount that the DAC reference voltage can be changed, a total of
40 dB of attenuation is possible. Figure E-16 shows the attenuator configuration.
Appendix E: Functional Operation Summary
Delay
28 ns
21 ns
10 ns
t
E 17