Tektronix 11A32 Assembly instructions

User Reference
Manual
11A32
Two Channel
Amplifier
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User Reference
Supplement
Part No. 070-5922-01
Product Group 47
11A32
Serial Number__
Please check for CHANGE INFORMATION at the rear of this manual.
Second Edition SEP 1988

INSTRUMENT SERIAL NUMBERS
Each instrument has a serial number on a panel insert, tag, or stamped on the chassis. The first number or
letter designates the country of manufacture. The last five digits of the serial number are assigned sequen¬
tially and are unique to each instrument. Those manufactured in the United States have six unique digits.
The country of manufacture is identified as follows:
BOOOOOO Tektronix, Inc., Beaverton, Oregon, USA
100000 Tektronix Guernsey, Ltd., Channel Islands
200000 Tektronix United Kingdom, Ltd., London
300000 Sony/Tektronix, Japan
700000 Tektronix Holland, NV, Heerenveen, The Netherlands
Copyright© Tektronix, Inc., 1987-1988. All rights reserved. Tektronix products are covered by U.S. and
foreign patents, issued and pending. TEKTRONIX, INC. SCOPEMOBILE and are registered
trademarks. Printed in U.S.A.

Features
Dual trace
Functions
• Up to 400 MHz bandwidth (in 11402)
• Calibrated sensitivities from 1 mV to 10 V/division
• 50 D; or 1 M£1 input impedance
• High-resolution, calibrated DC offset (0.25 division/increment, coarse; 0.025
division/increment, fine)
• Fast overdrive recovery
Signals applied to the CH 1 and CH 2 input connectors can be displayed or
removed from the display by pressing the display on/off buttons adjacent to the
input connectors.
All other 11A32 functions are controlled through the host mainframe. Such
mainframe-controlled functions are:
• Sensitivity, Coarse and Fine, over a range of 1 mV to 10 V/division.
• Vertical Offset.
• Coupling: AC, DC, or Off.
• Impedance (input termination): 50 Q. or 1 MQ.
• Bandwidth Limit: 100 MHz or 20 MHz.
• Display Polarity: normal or inverted.
• Trigger Polarity: normal or inverted.
• Combination of Display Channels: See Operating Information section of
mainframe User Reference manual.
• Combination of Trigger Channels: same as Display Channels; see Operating
Information section of mainframe User Reference manual.
11A32 User Reference Supplement
l

11
11A32 User Reference Supplement

Section 1—General Information
Contents of this Supplement. 1-1
Plug-in to Mainframe Compatibility.1-2
Initial Inspection.1-2
Operating Temperature. 1-2
Installing and Removing the 11A32.1-3
Instrument Options. 1 -5
Packaging for Shipment. 1-5
Section 2—Operating the 11A32 in 11300-series Mainframes
Display On/Off.2-1
Selecting Coupling, HF Limit, and Impedance.2-1
Other Functions.2-2
Position and Offset.2-2
HF Limit.2-3
DC Circuit Loading. 2-4
Adding Waveforms. 2-5
Overdrive Recovery.2-5
50 D Overload. 2-7
Active Probes..2-8
Probe ID.......2-8
Front-Panel Error Messages... 2-9
GPIB and RS-232-C Commands and Syntax ....... 2-10
Section 3—Operating the 11A32 in 11400-series Mainframes
Display On/Off. 3-1
Other Functions. 3-1
Vertical Offset.3-2
BW Limit. 3-2
DC Circuit Loading. 3-3
Adding and Subtracting Waveforms. 3-4
Overdrive Recovery. 3-5
50 Q Overload.3-8
Active Probes.3-8
Probe ID. 3-8
Front-Panel Error Messages.3-10
GPIB and RS-232-C Commands and Syntax. 3-11
Section 4—Specification
Performance Conditions.4-1
Electrical Characteristics.4-1
Environmental Characteristics. 4-7
Physical Characteristics.4-8
Recommended Probes. 4-8
11A32 User Reference Supplement
iii

1- 1 Installing a plug-in unit in a mainframe oscilloscope.1-4
2- 1 Location of AC coupling capacitors in plug-in amplifiers.2-4
2-2 Overdrive recovery using long (top) and short (bottom) cables
terminated in 50 Cl. Traces are offset two divisions and the
photograph is a double exposure.2-6
2- 3 Overdrive recovery using long (top) and short (bottom) cables
unterminated. Traces are offset two divisions and the
photograph is a double exposure...2-7
3- 1 Location of AC coupling capacitors in plug-in amplifiers.3-3
3-2 Overdrive recovery using short (top) and long (bottom) cables
terminated in 50 Cl. Traces are offset two divisions and the
illustration is a composite of two waveforms...3-6
3-3 Overdrive recovery using short (top) and long (bottom) cables
unterminated. Traces are offset two divisions and the
illustration is a composite of two waveforms.3-7
3- 4 Sequence of decisions used to select a new waveform in response
to probe ID button.3-9
4- 1 Dimensions of 11A32...4-9
2-1 Functions and Where They are Described.2-2
2- 2 Channel Parameter Commands (for 11300-series oscilloscopes).2-10
3- 1 Functions and Where They are Described.3-1
3- 2 Channel Parameter Commands (for 11400-series oscilloscopes).3-11
4- 1 Electrical Characteristics.4-1
4-2 Environmental Characteristics.4-7
4-3 Physical Characteristics.4-8
iv
11A32 User Reference Supplement

General Information
This Supplement to the mainframe User Reference manual and the Incoming
Inspection Procedure manual are standard accessories to the 11A32. For a list of
related manuals, see Appendix B.
Contents of this Supplement
This Supplement contains the following four sections:
Section 1—GENERAL INFORMATION, describes mainframe to plug-in unit
compatibility, explains how to install and remove the 11A32 from a mainframe,
outlines any options available for the 11A32, and gives details about packaging
for shipment.
Most 11A32 functions, and their use, are described in the Operating Information
section of the mainframe User Reference manuals. These functions are those
common to all amplifier plug-in units. Examples of common functions are offset,
sensitivity, input impedance (where selectable), coupling, and bandwidth limit.
Only functions unique to the HA32~11300-series or llA32-11400-series
combinations are explained in the following sections.
Section 2—OPERATING THE 11A32 IN 11300-SERIES MAINFRAMES, explains
how to operate those 11A32 functions not covered in the 11301 and 11302 User
Reference Manual, or the 11301A and 11302A User Reference Manual.
Section 3—OPERATING THE 11A32 IN 11400-SERIES MAINFRAMES, explains
how to operate those 11A32 functions not covered in the 11401 and 11402 User
Reference Manual.
Section 4—SPECIFICATION, gives detailed specifications of all 11A32
mainframe oscilloscope combinations.
11A32 User Reference Supplement
1-1

General Information
Plug-in to Mainframe Compatibility
The 11A32 is designed for use in the 11301,11301A, 11302, 11302A, 11401, 11402,
and future 11000-series plug-in mainframes. 11A32 bandwidth varies depending
on the host mainframe. Details about bandwidth are included in Section 4,
Specification, of this Supplement, and in the Tektronix Corporate Catalog. Refer
to the Tektronix Corporate Catalog for complete compatibility information.
Initial Inspection
This instrument was inspected mechanically and electrically before shipment,
and should meet all electrical specifications. First, inspect the 11A32 for physical
damage incurred in transit. Secondly, to verify that the instrument is functioning
properly, perform the Incoming Inspection Procedure, shipped with the instrument.
This brief procedure verifies most instrument functions and checks the internal
auto-calibration references. If you find instrument damage or deficiency, contact
your local Tektronix Field Office or representative.
The 11A32 can be operated where the ambient air temperature is between 0° and
+50° C and can be stored in ambient temperatures from -40° to +75° C. After
storage at temperatures outside the operating limits, allow the chassis to reach
operating temperature limits before applying power.
1-2 11A32 User Reference Supplement