Pulse Modulation Rise And Fall Time Test - HP 8340B Manual

4-12. PULSE MODULATION RISE AND FALL TIME TEST

THIS TEST IS NOT APPLICABLE TO INSTRUMENTS EQUIPPED WITH
OPTION 006, DELETE PULSE MODULATION.
Specification
For CW mode and frequencies =400 MHz only:
Rise (TR) and Fall (TF) Times:
Description
The OUT's RF output frequency is down converted to 50 MHz using a mixer and a local oscillator. The
50 MHz IF signal is amplified and applied to an oscilloscope. The DUT is pulsed using a pulse
generator. The pulse generator output is also applied to the oscilloscope. The oscilloscope is used to
measure the pulse envelope rise and fall times. Refer to Figure 4-12 Pulse Definitions.
HP 8340B/41B
Table 4-25. Pulse Modulation Rise and Fall Time Test Specification
<25 nanoseconds
Tv
TRF -RF Pulse Length
TV -Input Pulse Length
T
0 -Delay Time
Vp -RF Pulse Amplitude
Figure 4-12. Pulse Definitions
NOTE
-
TR -RE
Pulse Rise Time
TF -RE Pulse Fall Time
VOR.Overshoot and Ringing
-Video Feedthrough
Performance Tests 4-57