1-22 Agilent 4155B/4156B User’s Guide Vol.2, Edition 5
Measurement Units
Pulse Generator Unit (PGU)
Leading-edge and trailing-edge transition time
The leading-edge and trailing-edge transition times have five setting ranges as
shown in Table 1-16.
Table 1-16 Ranges and Resolutions of Leading and Trailing Transition Time
• restrictions
• leading-edge transition time £ pulse width ´ 0.8.
• trailing-edge transition time £ (pulse period - pulse width) ´ 0.8.
• Leading and trailing-edge transition times for a PGU must be in the same
range.
Output impedance
You can select 50 W or Low impedance.
Trigger output
PGUs output trigger signal to synchronize with external pulse generators. If an
41501A/B has PGUs, the 41501A/B has a trigger output terminal. For details of
trigger functions, refer to “Trigger Function” in Chapter 3.
Range
Leading and Trailing
Transition Time
Resolution
1 100 ns to 1000 ns 1 ns
20.50 ms to 10.00 ms 10 ns
35.0 ms to 100.0 ms 100 ns
450 ms to 1000 ms1 ms
5 0.5 ms to 10.00 ms 10 ms
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