Controls And Connectors; Basic Operation - Tektronix 5A14N Instruction Manual

5A14N
SECTION 1
OPERATING INSTRUCTIONS
Instrument Description
The 5A14N Four Channel Amplifier is a general-purpose
plug-in unit for use with Tektronix 5100-series oscillo¬
scopes* The unit contains independent amplifier channels
with identical characteristics, and features solid-state
circuitry and simplicity of operation. The VOLTS/DIV
knob skirts are lighted to provide a direct readout of
calibrated deflection factor either with or without a probe.
Any channel may be used to produce a single-channel
display. All channels may be displayed alternately, or
channel 4 and 3 may be alternated with 2 and 1 to produce
four displayed channels. While designed primarily for use as
a vertical amplifier, the unit can be operated in conjunction
with the horizontal deflection system of the oscilloscope
for X-Y displays.
CONTROLS AND CONNECTORS
This is a brief description of the function or operation of
the controls and connectors. Additional operating informa¬
tion is given under General Information.
Input Coupling AC-DC: Button pushed in selects
Pushbuttons capacitive coupling of input
signal; button out selects direct
coupling of input signal.
GND: Disconnects the input signal
and provides ground reference to
the amplifier input stage.
PRE CHG: Both AC and GND
buttons pushed in allows pre-
charging of the coupling capaci¬
tor. Release GND for measure¬
ment.
Single or Dual Beam Slide switch at the rear of the
Selector (Internal) plug-in that selects the channel
logic sequence. When the switch is
in the forward position (toward the
front panel), the plug-in is in the
single-beam mode, which provides a
4-3, 4-3, 2-1, 2-1 logic sequence. In
the opposite position, the plug-in is
in the dual-beam mode, which pro¬
vides a 4-3-2-1 logic sequence.
DISPLAY
POSITION
VOLTS/DiV
Variable (CAL)
Volts/Div
Applies logic levels to the oscillo¬
scope system to enable piug-in
operation. The switch functions
only when the plug-in is operated in
one of the vertical plug-in compart¬
ments.
Positions display.
Volts per major graticule division.
Selects calibrated deflection factors
from 1 mV/Div to 5 V/Div; 12
steps in a 1-2-5 sequence. Knob
skirt is illuminated to indicate
deflection factor. Readout is auto¬
matically scaled when readout-
coded 10X probe is installed.
Input Connectors BNC connectors for application of
external voltage signals. Includes a
coded-probe input ring for activa¬
tion of X10 readout.
BASIC OPERATION
Preparation
The 5A14N is calibrated and ready for use when
received. It can be installed in any compartment of the
5100-series oscilloscope, but it is intended for use primarily
in vertical compartments (the center and left compart¬
ments). For X-Y operation, the 5A14N may also be
installed in the horizontal (right) compartment (refer to the
5100N Oscillscope System Instruction Manual for informa¬
tion on X-Y operation).
Provides uncalibrated, continuously
variable deflection factors between
calibrated steps; extends range to
12.5 V/Div.
NOTE
If the oscilloscope system receives no D ISP LA Y ON
logic levels from the vertical plug-ins, it is designed to
display the unit in the left compartment.
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