Tektronix 7A12 Datasheet
Fig.
1-1.
7A12
Dual
Trace
Amplifier.
Introduction
The
7A12
vertical amplifier plug-in
with Tektronix 7000-Series Oscilloscopes. The
dualchannel, wide band amplifier with the upper frequency
limit mainly determined by the oscilloscope mainframe in
which it is used. For example, the 7A12 used with the
oscilloscope will have an upper bandwidth limit of
MHz.
When used with a 7704 oscilloscope, the upper band-
width limit
sation circuits are auotmatically switched to correspond to
the setting of the VOLTSlDlV switch. A +UP/INV switch
for each channel allows either channel to
differential measurements. The
circuit with
is
about 105
a
DC
offset
MHz.
Internal gain and compen-
7,412 features
of
at least
is
designed for use
7A12
about
be
inverted for
a
DC
+500
divisions
is
7504
75
offset
for
viewing low level
DC
component.
AC
signals in the presence
a
This instrument will meet the electrical character stics
listed in Table
in Section
Section 5 provides a convenient method of checking
ment performance without making internal adjustment
The following electrical characteristics are vatid ovep the
stated environmental range for instruments calibrated
ambient temperature of +20°C to
minute warmup unless otherwise stated.
5.
1-1
following complete calibration as kliven
The
performance check procedure givc n
+30"~,
of
a
high level
ir
after a five
in
stru-
;.
~t
an
TABLE
ELECTRICAL
Characteristic Performance Requirement
Deflection Factor
Calibrated Range Vfdiv, 10 pushbuttons in
Deflection Factor
Accuracy
Uncalibrated
+UP
to INVERT Gain
Ratio
Frequency Response
AC (Capacitive)
Coupled Input Lower
Bandwidth Frequency
Time Delay Between
Channels
Within
mV/div
Continuously variable: VAR VIDIV
extends deflection factor to
V/div
1:l within
See Table
1
10
with
I
2%
with
GAIN
1%
A
Hz
or less without probe,
P6053
1-1
adjustment
at
least 12.5
1
Hz
at
or
a
10
I
less
500 ps or less
Supplemental
tnformation
-
-
-
-
-
Channel Isolation
At least 3000:l or
reference signal
100:l with equal deflection factors
MHz
or
less
at
0.3
75
div
MHz.
with
At
5
least
at
div
50
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