Tektronix 2213A Operator's Manual

NOTE
If t he amplitude measureme n t is
critical
or
if t he t r ace
is t h ic k (as α result of h um o r noise on t
h
e
signal), α
more acc u rate value can b e
obtained by meas u ring
from t h e top of α pea k to t
h
e top
of α valley . Th is will
eliminate trace t h ic kn ess f r om t
h
e measureme
n t .
9 . Calculate
the peak-to-peak voltage, using the follow-
ing
formula :
V OLTS/DIV
vertical

switch setting
V olts ( ρ - ρ )

=

deflection

χ

i ndicate d b y 1 Χ
(divisions)

(or 10 Χ PROBE when
10 Χ probe is used)
EXAMPLE : The measured p
eak-to-peak vertical deflec-
tion is 4 .6 divisions (see
Figure 4-1) using α 10 Χ attenua-
tor probe with t he V OLTS/DIV
switch set to 5 V (at 10 Χ
PROBE setting) .
Substituting the given values :
V olts ( ρ - ρ ) = 4 .6 div χ 5
V /div = 23 V .
Instantaneous Voltage
To measure
instantaneous level at α given p oint on α
waveform, referred to
ground, use the following procedure :
1 . Preset instrument
controls and obtain α baseline
trace .
2 . Apply t he signal to either vertical-channel input con-
nector and set the VERTICAL MODE switch to display the
channel used .
3 . V erify that the V OLTS/DIV Variable control is in t he
CAL detent and set the Input Coupling switch to GND .
4 . V ertically position the baseline trace to the center
h orizontal graticule line . This establishes the ground refer-
ence
location .
NOTE
If measurements are to b e ma d e relative to α voltage
level ot he r t han groun d, set t h e I np ut Cou p li ng switc h
to DC instead, and a pp ly t he refe re n ce voltage to t h e
Input co nn ector .
T h
e n p osition t he t r ace to t
h
e
refer-
ence ( h orizontal gratic u le) line .
5 . Set the COUPLING switch to DC . Points on the
waveform above the ground reference location are positive .
Those points below are negative .
NOTE
If u sing C h annel 2, en sure t h at t he C h ann el 2 I NVER T
switc h is in its noninverting mo d e ( bu tton out) .
6 . If necessary, re p eat Step 4 using α different refer-
ence line which allows the waveform in Step 5 to be dis-
p layed
on
screen .
7 . Adjust the TRIGGER LEVEL control to obtain α sta-
ble display .
_

8 . Set the SEC/DIV switch to α p osition that displays
several cycles
of the signal .
9 . M easure
the
d
ivisions of vertical deflection between
the
ground
reference line and the p oint on the waveform at
which t he level is to be determined (see F igure 4-2) .

Tektronix 2213A Specifications

General

Brand	Tektronix
Model	2213A
Category	Test Equipment
Language	English