Tektronix 2465B Operator's Manual

Controls, Connectors, and Indicators
A-Trigger Modes:
AUTO LVL Automatically establishes the trigger level on a
triggering signal and free runs the sweep in the
absence of a triggering signal.
In Auto Lvl mode, LEVEL covers the range between
the positive and negative peaks of repetitive
triggering signals. If the triggering signal amplitude
changes, the trigger level does not change unless a
trigger is no longer produced at the established level.
The signal peaks are measured and the trigger level
is redefined when triggering ceases, when the LEVEL
control is turned to either extreme, or when the
upper MODE button is pressed. If the LEVEL control
is set near either end position, the trigger level is set
near the corresponding signal peak. If LEVEL is in
the midrange between either end, the trigger level set
by AUTO LVL is near the midpoint between the
trigger signal peaks. When INIT@50% is pressed,
the trigger level is set near the midpoint of the signal,
regardless of the setting of LEVEL. The established
trigger level remains in effect when switching to Auto
trigger mode.
To obtain triggered sweeps, the triggering signal
repetition rate must be greater than a nominal limit,
depending on the selected sweep speed.
With Auto Lvl mode and Vert trigger source, the
lowest numbered channel displayed, or Add if it is
displayed, provides the trigger signal. When the
trigger mode is changed from Auto Lvl to Auto while
more than one channel is displayed, the single
channel trigger source is retained and the VERT
indicator is turned off unless Add is being displayed.
When Add is displayed, Vert source is retained when
trigger mode changes to Auto.
5-20
2465B/2455B/2445B Operators

Tektronix 2465B Specifications

General

Bandwidth	400 MHz
Channels	4
Vertical Sensitivity	2 mV/div to 5 V/div
Maximum Input Voltage	400 V (DC + peak AC)
Display	CRT
Trigger Modes	Auto, Normal, Single
Time Base Range	500 ps/div to 0.5 s/div
Rise Time	875 ps
Power Supply	48 to 440 Hz
Dimensions	495 mm