The 2465A. 2455A. 2445A - Tektronix 2465A Operator's Manual

The 2465A, 2455A, and 2445A
The TEKTRONIX 2465A, 2455A, and 2445A portable oscilloscopes have four
vertical channels with DC to 350 MHz, 250 MHz, and 150 MHz bandwidths.
Deflection factors run from 2 mV to 5 V per division, in a 1-2-5 sequence, with either
1 MO or 50 0 input resistance, in channels 1 and 2. Either AC or DC input coupling is
available at 1 MO. Channels 3 and 4 give 0.1 V or 0.5 V per division, with 1 MO input
resistance, and DC coupling. With the standard 10X probes, channels 1 and 2 display
20 mV to 50 V/division and channels 3 and 4 display 1 V or 5 V/division.
The trigger systems work automatically for most signals. They operate in various
modes, from any channel, with couplings for a wide range of signals. The 2445A
triggers from DC to 250 MHz. The 2455A and 2465A trigger from DC to 500 MHz.
Sweep speeds range from 1.5 s to 1 ns per division on the 2445A and 2455A and
to 500 ps per division on the 2465A, including the effects of the X10 magnifier and the
calibrated variable between 1-2-5 steps. Horizontal displays include A-Sweep, B-
Sweep (delayed), A alternated with B, and CH 1 (for X/V displays).
The SETUP features, AUTO, SAVE, and RECALL, save time and prevent errors,
whether you are a novice operator or a master. AUTO Setup works with almost any
signal. For repeating measurements, the Save and Recall functions record and restore
as many as 30 instrument setups, including the extended-function options. Setups can
be recalled either immediately or sequentially.
Digital readouts of time, voltage, scale factors, trigger levels, and auxiliary
information also save time and reduce errors.
With the available Counter/Timer/Trigger (CIT), Option 06 or Option 09,
measurements require even less effort and give better accuracy. The
CIT
increases
trigger selectivity, especially in digital systems. Option 09 includes the
CIT
and a
17 -bit Word Recognizer (WR). The available Television/Video (TV) enhancement,
Option 05, can trigger at any desired point in a frame and it can reduce the effects of
ac coupling and hum in a video signal. The available Digital Multimeter (DMM)
measures dc voltage, dc current, ac rms voltage, ac rms current, resistance, and
temperature with floating inputs.
Instruments with
CIT
include MENU in the Trigger Mode selection. The WR adds a
Word Recognizer Probe connector on the rear panel. The TV enhancement adds
LINES, FLD1, and FLD2 Trigger Coupling.
The. available GPIB interface accesses all controls and digital readings. The
interface adds GPIB status indicators, just above the CRT. See the 24X5A/2467 GPIB
(Option 10) Instrument Interfacing Guide for information on integrating the instrument
into a GPIB system.
The 2465A CT includes
CIT
and WR (Option 09) and GPIB (Option 10). The
2465A DM adds DMM (Option 01) and also includes
CIT
and WR (Option 09) and
GPIB (Option 10). The 2465A DV adds TV (Option 05) to the features of the 2465A
DM.
Illustrations at the back of the manual show the instrument front and rear panels.
2465A/2455A/2445A Operators ix