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{{Oscilloscope Sidebar |
{{Oscilloscope Sidebar  
title=Tektronix 11301 |
|manufacturer=Tektronix
summary=400 MHz programmable analog scope |
|series=11000-series scopes
image= Tek 11301a front.JPG |
|model=11301  
caption=Tek 11301   |
|summary=400 MHz programmable analog scope  
introduced=1987 |
|image= Tek 11301a front.JPG  
discontinued=(?) |
|caption=Tek 11301
manuals=
|introduced=1986
* [[Media:070-7178-00.pdf|Tektronix 11301A Service Reference Manual (PDF, OCR)]]
|discontinued=(?)  
* [[Media:061-3380-00.pdf|Tektronix 11301 Preliminary Service Information (PDF, OCR)]]
|designers=
* [[Media:Tek 11301 11302 prelim service.pdf|Tektronix 11301 / 11302 Preliminary Service Information (OCR, PDF)]]
|manuals=
* [[Media:070-6693-00.pdf|Tektronix 11301 and 11302 Incoming Inspection Procedure]]
* [[Media:070-6106-00.pdf|Tektronix 11301 and 11302 Programming Guide]]
* [[Media:070-6106-00(1).pdf|Tektronix 11301 and 11302 User's Reference Manual]] (OCR)
* [[Media:070-6780-00.pdf|Tektronix 11301 Programmable Oscilloscope Service Reference]]
* [[Media:070-7178-00.pdf|Tektronix 11301A Service Reference]] (OCR)
* [[Media:11301A Service with bookmarks.pdf|Tektronix 11301A Service Reference]] (OCR, bookmarks, blank pages removed)
* [[Media:061-3380-00.pdf|Tektronix 11301 Preliminary Service Information]] (OCR)
* [[Media:Tek 11301 11302 prelim service.pdf|Tektronix 11301 / 11302 Preliminary Service Information]] (OCR)
* [[Media:Early Proto11301 11T84.pdf|Photo of 11301 Prototype During Development]]
* [https://archive.org/download/tektronix_11300_Brochure_Egg/tektronix_11300_Brochure_Egg.pdf 11300 Series Product Brochure]
* [[Media:070-7177-00.pdf|Tektronix 11301A and 11302A Functional Test Manual]] (needed)
* [[Media:070-7174-00.pdf|Introducing the 11301A and 11302A]] (needed)
}}
}}
The '''Tektronix 11301''' is a programmable 400 MHz analog oscilloscope that takes up to three
The '''Tektronix 11301''' is a programmable 400 MHz analog oscilloscope that takes up to three
[[11000-series plug-ins]] or (vertical) [[:7000-series plug-ins]].
[[11000-series plug-ins]] or (vertical) [[:7000-series plug-ins]].
Line 18: Line 29:
The sister model [[11302]] is basically identical but has a [[micro-channel plate CRT]] and 500 MHz bandwidth.
The sister model [[11302]] is basically identical but has a [[micro-channel plate CRT]] and 500 MHz bandwidth.


The 11301 has an infrared beam touch screen.
The 11301 has an infrared beam touch screen. There are 10 columns and 14 rows of beams.
There are 10 columns and 14 rows of beams.


The 11301 contains a 77 nanosecond delay line.
The 11301 contains a 77 nanosecond delay line.
The 11301 and 11302 make use of a [[Patent_US_4677340A|patented]] system for automatically calibrating all the way to the graticule
(i.e., including CRT deflection sensitivity) by optically sensing the position of the beam with respect to the graticule
and applying any necessary correction factors. This is discussed in the patent and also on page 9 of the Handshake article linked
below which states:
<blockquote>
Optical sensors on the CRT bezel sense when the beam crosses the graticule lines to factor this information into the auto cal control signals. As a result, accuracy of the 11300-Series is controlled from the plug-in input connector to the CRT graticule without operator intervention.
</blockquote>


{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Bandwidth | 400 MHz }}
{{Spec | Bandwidth | 400 MHz }}
{{Spec | Sweep | 5 ns/Div to 500 ms/Div, 1-2-5, &times;10 magnifier <br />(same specs for delayed time base) }}
{{Spec | Sweep | 5 ns/Div to 500 ms/Div, 1−2−5, 10 magnifier <br />(same specs for delayed time base) }}
{{Spec | Triggering | 0.35 Div (int) or 20 mV (ext) to 50 MHz, increasing to 1 Div/150 mV at max. bandwidth}}
{{Spec | Triggering | 0.35 Div (int) or 20 mV (ext) to 50 MHz, increasing to 1 Div/150 mV at max. bandwidth}}
{{Spec | Trigger&nbsp;modes | DC, AC (&gt;50 Hz), HF Reject (&lt; 30 kHz), LF reject (&gt;80 kHz), TV (line or field) }}
{{Spec | Trigger modes | DC, AC (>50 Hz), HF Reject (<30 kHz), LF reject (>80 kHz), TV (line or field) }}
{{Spec | X-Y operation | X from center plugin, bandwidth 3 MHz<br />X-Y phase difference &lt;1&deg; to 1 MHz, &lt;3&deg; to 2 MHz }}
{{Spec | X-Y operation | X from center plugin, bandwidth 3 MHz<br />X-Y phase difference < 1° to 1 MHz, <3° to 2 MHz }}
{{EndSpecs}}
{{EndSpecs}}


==Internals Common to the 11301 and 11302 ==
==Links==
In this section, "11300" refers to the 11301 and 11302.
{{Documents|Link=11301}}
 
The  11300 is a digitally controlled analog oscilloscope.
Like a typical analog scope, the 11300 has vertical amplifiers, a trigger circuit,
a timebase/sweep, a horizontal amplifier, and a CRT.
Unlike traditional analog scopes,
an 11300 system contains contains a significant amount of digital circuitry,
including multiple microprocessors, one in the mainframe and at least one in each plug-in.
The digital circuitry provides several externally-observable features:
* self-test and diagnosis
* self-calibration
* remote control via RS-232 or GPIB
* on-screen menu-based touch screen user interface
 
Digital circuitry also implements some features that were traditionally implemented with analog circuitry,
e.g., the trigger holdoff is implemented with a counter instead of with a multivibrator.
 
There are many DAC-generated analog control voltages in the 11300.
 
The left and center plug-in can be used as the vertical axis and/or the trigger signal.
The right plug-in can used as the horizontal axis and/or the trigger signal.
 
The RS-232 interface of the 11301 is implemented using an 8251A UART chip,
interfaced using an MC1488 line drive and an MC1489 line receiver.
 
The mainframe communicates with the plug-ins via the [[SDI|Serial Data Interface (SDI)]],
which is part of the [[11000_Series_plug-in_interface|11000-series plug-in interface]].
 
The 11300 performs a variety of self-checks and self-calibration.
Some of the self-checks are digital in nature, e.g., testing RAM by writing
a pattern, reading it back, and comparing what was read with what was written.
Other tests are analog in nature.
For the analog tests, there is an analog bus, ABUS,
that allows various voltages throughout the scope
to be measured by the test routine.
The ABUS is a fan-in tree formed by 74HC4051 analog multiplexers.
One level of multiplexing happens at the module level.
The ABUS signals from each of the modules are brought to the main ABUS multiplexer
(lower left corner of schematic drawing 12, Partial A11 Main Processor Board).
The output of the main ABUS multiplexer is fed to an LF398 sample and hold IC,
the output of which is fed to an AD574 12-bit successive approximation analog to digital converter.
 
The 11300 has a GPIB interface implemented using a TMS9914A GPIB controller IC.
 
The 11300 uses a TMS4500A DRAM controller to manage a bank of 41464 DRAM chips.
 
The main CPU in the 11300 mainframe is an Intel 80186.
Program memory for the 80186, i.e., firmware, is stored on eight 27512 EPROMs.
Four of the EPROMs contain the lower bytes and the other four EPROMs contain the upper bytes.
This is shown on schematic figure 9, Kernel.
 
The 11300 has a real-time clock powered by a 3V lithium battery.
The real-time clock is a [[Media:Msm6242b.pdf|6242 IC]].


==Pictures==
==Pictures==
Line 93: Line 59:
Tek 11301 trace2.jpg
Tek 11301 trace2.jpg
11301 block diag.png
11301 block diag.png
11301 HV parts location.jpg|HV parts location
</gallery>
</gallery>
==Components==
{{Parts|11301}}
{{Parts|11301A}}


[[Category:11000 series mainframes]]
[[Category:11000 series mainframes]]
[[Category:GPIB interface]]
[[Category:GPIB interface]]
[[Category:RS-232 interface]]
[[Category:RS-232 interface]]

Latest revision as of 08:24, 21 March 2024

Tektronix 11301
400 MHz programmable analog scope
Tek 11301

Produced from 1986 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 11301 is a programmable 400 MHz analog oscilloscope that takes up to three 11000-series plug-ins or (vertical) 7000-series plug-ins. Note, however, that the 7000 series plugins have mechanical interlock preventing them from being installed into an 11K mainframe.

The sister model 11302 is basically identical but has a micro-channel plate CRT and 500 MHz bandwidth.

The 11301 has an infrared beam touch screen. There are 10 columns and 14 rows of beams.

The 11301 contains a 77 nanosecond delay line.

The 11301 and 11302 make use of a patented system for automatically calibrating all the way to the graticule (i.e., including CRT deflection sensitivity) by optically sensing the position of the beam with respect to the graticule and applying any necessary correction factors. This is discussed in the patent and also on page 9 of the Handshake article linked below which states:

Optical sensors on the CRT bezel sense when the beam crosses the graticule lines to factor this information into the auto cal control signals. As a result, accuracy of the 11300-Series is controlled from the plug-in input connector to the CRT graticule without operator intervention.

Key Specifications

Bandwidth 400 MHz
Sweep 5 ns/Div to 500 ms/Div, 1−2−5, 10 magnifier
(same specs for delayed time base)
Triggering 0.35 Div (int) or 20 mV (ext) to 50 MHz, increasing to 1 Div/150 mV at max. bandwidth
Trigger modes DC, AC (>50 Hz), HF Reject (<30 kHz), LF reject (>80 kHz), TV (line or field)
X-Y operation X from center plugin, bandwidth 3 MHz
X-Y phase difference < 1° to 1 MHz, <3° to 2 MHz

Links

Documents Referencing 11301

Document Class Title Authors Year Links
Handshake 1986-1987 Winter.pdf Article 11300-Series extends the usefulness of analog scopes Dale Aufrecht 1986 11301 • 11302

Pictures

  • HV parts location

    HV parts location

Components

Some Parts Used in the 11301

Part Part Number(s) Class Description Used in
165-2053-00 165-2053-00 Hybrid integrated circuit vertical amplifier 11301 • 11302
M229 Monolithic integrated circuit input/output 11301 • 11302
M414 Monolithic integrated circuit counter 11301 • 11302


Some Parts Used in the 11301A

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