Time Delay Due To Filters; Setting Trigger Parameters For An External Trigger; Figure 2-14: Slope And Level Controls; Table 2-3: Time Delay Caused By Filters - Sony Tektronix VX4792 User Manual

Time Delay Due to Filters

Setting Trigger Parameters for an External Trigger

Trigger Level can
be adjusted
vertically.
Slope
VX4792 User Manual
Each filter has a unique delay time. This delay affects the timing relationship
between the sync signal, marker signals, and waveform output signals. You can
reduce the delay by selecting a wider filter value. Table 2–3 shows the delay
relative to the sync and marker signals caused by the filters.

Table 2-3: Time Delay Caused By Filters

Filter
1 MHz
5 MHz
20 MHz
50 MHz
The TRIGGER INPUT connector can receive external trigger (gate) signals with
a pulse width as narrow as 15 ns. You can use commands to set triggering
parameters including slope, polarity, level, and impedance. Each parameter is
described below.
Figure 2–14 shows how the slope (polarity) and level controls relate to the
external trigger (gate) signal.
Positive Going Edge
Trigger Slope can be
positive or negative.

Figure 2-14: Slope and Level Controls

The TRIGger:SLOPe command (page 3–78) sets the slope for the external trigger
signal. Slope may be set to either positive or negative. When positive is selected,
the output is triggered at the rising edge of the external trigger signal. When
negative is selected, the output is triggered at the falling edge of the external
trigger signal.
Functional Overview
Typical Time Delay
390 ns
78 ns
18 ns
11 ns
Negative Going Edge
2-15