Tektronix 2225 Manual

No.
Title Function Recommended Use
12 ADD-ALT- CHOP
ADD shows algebraic sum of CH 1 and
CH 2 signals. ALT displays each
channel alternately. CHOP switches
between CH 1 and CH 2 signals during
the sweep at 500 kHz rate.
Display summed or individual
signals.
13 VOLTS/DIV Selects vertical sensitivity.
Adjust vertical signal to suitable
size.
14 Variable (CAL)
Provides
continuously
variable deflection
factors between
calibrated
positions of the
VOLTS/DIV
switch. Reduces
gain by at least
25:1.
The CAL control
can be pulled out
to vertically
magnify the trace
by a factor of 1 0.
Limits bandwidth to
5 MHz.
Match signals for
common mode
readings. Adjust
height of pulse
for rise-time
calculations.
Inspecting small
signals.
15 AC-GND-DC
In AC, isolates dc component of signal.
In GND, gives reference point and
allows precharging of input coupling
capacitor. In DC, couples all
components of signal.
Selects method of coupling input
signals to the vertical deflection
system.
16
CH 1 OR X CH 2
ORY
Provides for input signal connections.
CH 1 gives horizontal deflection when
SEC/DIV is in X-Y.
Apply signals to the vertical
deflection system.
17
POSITION
COARSE
COARSE is convenient for moving
unmagnified traces
Control trace
horizontal
positioning in
direction.
18 POSITION FINE
FINE is convenient for moving
magnified traces when either ALT or
MAG is selected.
Control trace
horizontal
positioning in
direction.
19 X1 -ALT- MAG
X1 displays only normal (horizontally
unmagnified) waveform. ALT displays
normal and magnified waveforms
alternately. MAG displays only the
magnified waveform.
Select normal, comparative or
expanded waveforms.
20 SEC/DIV Selects time-base speed.
Set horizontal speed most suited to
re
q
uirements.
21 Variable (CAL)
Provides continuously variable
uncalibrated sweep speeds to at least
2.5 times the calibrated setting.
Extend the slowest speed to at least 1
.25 s/div
22
MAG(X5-X10-
X50)
Selects degree of horizontal
magnification.
Examine small phenomena in
detail.
23 Provides safety
connection to
earth and direct
si
g
nal source.
Chassis ground connection.
24 PROBE ADJUST
Provides approximately 0.5-V,1-kHz
square wave.
Match probe capacitance to individual
circuit. This source may be used to
check the basic functioning of vertical
and horizontal circuits but is not
intended to check their accuracy.

Tektronix 2225 Specifications

General

Brand	Tektronix
Model	2225
Category	Test Equipment
Language	English