Tektronix 2465B Operator's Manual

Controls, Connectors, and Indicators
LF RE J Signals are capacitively coupled, blocking the dc
component of the triggering signal and attenuating the
low-frequency signal components below 50 kHz. This
coupling allows triggering on the high-frequency
components of a complex waveform.
AC Signals are capacitively coupled. Frequency
components below 60 Hz are attenuated, and the dc
component of the input signal is blocked. This coupling
works for signals that are superimposed on slowly
changing dc voltages. This method will work for most
signals when trigger-level readout is not desired.
For instruments with serial numbers B049999 and below with firmware version
11 and above or for instruments with serial numbers B050000 and above with firm-
ware version 2 and above . the trigger level readout is displayed in AC trigger cou-
pling modes (HF REJ, LF REJ, AC, LINES, FLD1, FLD2, or ALT) or AC input cou-
pling. The trigger level readout is displayed with a "V?" mark, to indicate the set-
ting is only of value to allow the operator to obtain the same setting again. In TV
trigger modes the trigger level readout is displayed as a percent instead of in volts.
With Available TV Enhancement:
Trigger Coupling buttons and indicators select four additional trigger couplings.
The readout shows which of these couplings and which line number are selected,
in the upper right corner of the CRT If that corner is occupied, the 7V information
is displayed in the upper left corner.
LINES The A Sweep triggers at TV horizontal line-sync pulses.
AUTO trigger mode is automatically selected.
FLD 1 The A Sweep triggers on a selected line in the first field
of a TV signal. NORM trigger mode is automatically
selected.
FLD 2 The A Sweep triggers on a selected line in the second
field of a TV signal. NORM trigger mode is
automatically selected.
ALT The A Sweep alternately triggers on the same selected
line in both TV fields. Both the FLD 1 and the FLD 2
indicators light. NORM trigger mode is automatically
selected.
2465B/2455B/2445B Operators
5-23

Tektronix 2465B Specifications

General

Brand	Tektronix
Model	2465B
Category	Test Equipment
Language	English