Tektronix 7A19 Instruction Manual page 7

General
Installation
To effectively use the 7A19,
the operation and
capabilities of the instrument must be known . This section
describes front-panel control functions, general information
on signal input connections, and other subjects that pertain
to various measurement applications .
The 7A19 is calibrated and ready for use as received . It
can be installed in any compartment of TEKTRONIX
7000-Series Oscilloscopes, but is intended for principal use
in vertical plug-in compartments . To install, align the upper
and lower rails of the 7A19 with the oscilloscope tracks and
insert it . The front panel will be flush with the front of the
oscilloscope and the latch at the bottom left corner will be
in place against the front panel when the 7A19 is fully
inserted .
To remove the 7A19, pull on the latch (inscribed with
the unit identification "7A19") and the 7A19 will unlatch .
Continue pulling to slide the 7A19 out of the oscilloscope .
FRONT PANEL.
CONTROLS AND CONNECTORS
VOLTS/DIV Selects calibrated deflection factors
from 10 mV/Div to 1 V/Div ; 7
steps in a 1-2-5 sequence .
POSITION Controls the position of the trace .
IDENTIFY Deflects the trace about
0 .3 division for trace identification .
In instruments with readout, also
replaces readout with the word
"IDENTIFY" .
GAIN Adjustment Screwdriver adjustment
permits
calibration of deflection factor .
POLARITY Provides a means of inverting the
display .
+UP : A positive-going signal at the
INPUT connector deflects the CRT
display upward .
INSTRUCTION
Section 2-7A19
INVERT" : A positive-going signal at
the INPUT connector deflects the
CRT display downward .
Input Coupling Selects signal input coupling mode .
Switch
Probes
AC : The AC component of the
signal is coupled to the amplifier
input while the DC component is
blocked .
AC GND : Grounds the amplifier
input while maintaining the same
AC load for the input signal .
PRE-CHG : Provides a charge path
for the AC coupling capacitor to
pre-charge the input circuit before
switching the Input coupling switch
to AC .
DC : Both AC and DC components
of the signal are coupled to the
amplifier input .
DC GND : Grounds the amplifier
input while maintaining the same
DC load for the input signal .
INPUT Connector
Provides a means for connecting a
signal .
VARIABLE DELAY
Delays the signal up to
±500
(Option 4)
picoseconds by using a calibrated
10 turn dial .
OPERATING INS'TRUC'TIONS and CHECKOUT
Probes recommended for use with the 7A19 are the
P6056 (10X) or P6057 (100X) . Both probes are compatible
to 50 ohm systems, and will allow optimum frequency
response . "These probes also contain trace IDENTIFY and
readout encoding functions .