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manuals=
manuals=
* [http://w140.com/mmm/tek-545.pdf Tektronix 545 Manual (PDF)]
* [http://w140.com/mmm/tek-545.pdf Tektronix 545 Manual (PDF)]
* [http://bama.edebris.com/download/tek/545a(2)/Tek%20545a(2).pdf Tektronix 545A Manual (PDF)]
* [[Media:070-163.pdf|545A Instruction]] (OCR PDF, 20M)
* [http://bama.edebris.com/download/tek/545b/545b.djvu Tektronix 545B Manual (PDF)]
* [http://bama.edebris.com/download/tek/545b/545b.djvu Tektronix 545B Manual (PDF)]
* [http://w140.com/tek_545_calibration_and_maintenance_procedure.pdf Tektronix 545 Calibration and Maintenance Procedure (PDF)]
* [http://w140.com/535_545_operators_handbook.pdf Tektronix 535 and 545 Operators Handbook (PDF, OCR)]
* [http://w140.com/535_545_operators_handbook.pdf Tektronix 535 and 545 Operators Handbook (PDF)]
'''Maintenance and calibration'''
* [http://w140.com/tek_balancing_545_vert.pdf Balancing the 540-Series Vertical Amplifier (PDF)]
* [http://w140.com/tek_balancing_545_vert.pdf Balancing the 540-Series Vertical Amplifier (PDF, OCR)]
* [http://w140.com/tek_fcp/tek_545_fac_cal.pdf 545 Factory Calibration Procedure (PDF)]
* [http://w140.com/tek_545a_factory_calibration_procedure_early.pdf 545A Factory Calibration Procedure (January 1961, PDF)]
* [http://w140.com/tek_fcp/tek_545a_fac_cal.pdf 545A Factory Calibration Procedure (July 1961, PDF)]
* [http://w140.com/tek_fcp/tek_adjust_540_vert_delay.pdf How to Adjust the Vertical Amplifier and Delay Line of a 540-Series Oscilloscope (PDF)]
* [http://w140.com/tek_fcp/tek_adjust_540_vert_delay.pdf How to Adjust the Vertical Amplifier and Delay Line of a 540-Series Oscilloscope (PDF)]
* [http://w140.com/navair_17-20aw-08.pdf Navair 17-20AW-08 Manual, which discusses the 545 (PDF)]
* [http://w140.com/navair_17-20aw-08.pdf Navair 17-20AW-08 Manual, which discusses the 545 (PDF)]
* [[Media:Tek 545b irb.pdf|Tektronix 545B Instrument Reference Book (OCR, PDF)]]
* [[Media:Tek 545b irb.pdf|Tektronix 545B Instrument Reference Book (OCR, PDF)]]
* [[Media:tek_545_fcp.pdf|545 Factory Calibration Procedure, September 1959 (PDF, OCR)]]
* [[Media:tek_545a_fcp_early.pdf|545A Factory Calibration Procedure (January 1961, PDF, OCR)]]
* [[Media:tek_545a_fcp.pdf|545A Factory Calibration Procedure (July 1961, PDF, OCR)]]
* [http://w140.com/tek_545_calibration_and_maintenance_procedure.pdf Tektronix 545 Calibration and Maintenance Procedure (PDF)]
* [[Media:tek_545_calibration_maintenance_proc.pdf|Tektronix 545 Calibration and Maintenance Procedure (PDF, OCR, bad-OCR)]]
* [[Media:Tek 545b fcp jan 1966.pdf|Tektronix 545B Factory Calibration Procedure, January 1966 (PDF, needs PDF)]]
* [[Media:Tek 545b fcp tlc up to jan 1969.pdf|Tektronix 545B Factory Calibration Procedure, January 1969 (PDF, needs PDF)]]
* [[Media:Tek 545b eis march 1964.pdf|Tektronix 545B Engineering Instrument Specification (PDF)]]
<!-- * [http://bama.edebris.com/download/tek/545a(2)/Tek%20545a(2).pdf Tektronix 545A Manual (PDF)] -->
<!-- * [http://w140.com/tek_fcp/tek_545a_fac_cal.pdf 545A Factory Calibration Procedure (July 1961, PDF)] -->
<!-- * [http://w140.com/tek_fcp/tek_545_fac_cal.pdf 545 Factory Calibration Procedure (PDF)] -->
<!-- * [http://w140.com/tek_545a_factory_calibration_procedure_early.pdf 545A Factory Calibration Procedure (January 1961, PDF)] -->
}}
}}
The '''Tektronix Type 545''' is a 30 (33) MHz scope that takes [[letter-series and 1-series plug-ins]].   
The '''Tektronix Type 545''' is a 30 (33) MHz scope that takes [[letter-series and 1-series plug-ins]].   
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Type 545 was [[introduced in 1955|introduced February 7th, 1955]] along with the Type [[541]], and superseded in 1959 by the Type 545A, which was in turn superseded in 1964 by the Type 545B, which was produced until 1973.  
Type 545 was [[introduced in 1955|introduced February 7th, 1955]] along with the Type [[541]], and superseded in 1959 by the Type 545A, which was in turn superseded in 1964 by the Type 545B, which was produced until 1973.  
The difference between the 545A and 545 is the control ergonomics, not any major circuit design changes.
 
However, the delaying timebase on the 545A supports delays up to 10 seconds while the 545 supports delays only up to 100 milliseconds.
The difference between the 545A and 545 is the control ergonomics, not any major circuit design changes. 
The main improvement was to replace a pair of switches for the time base (8-position Time/Div and 6-position multiplier)
The 545A uses the [[T5430]] CRT. P2 [[phosphor]] was standard.
with a single 24-position switch, freeing up front panel space for a Time Base B Trigger Mode rotary switch.
Additionally, the delaying timebase on the 545A supports delays up to 10 seconds while the 545 supports delays only up to 100 milliseconds.
 
The older 545 uses the [[T54|T54 / 5BHP2]] CRT, P2 [[phosphor]] was standard.
The 545A uses the [[T5430]] CRT for which also P2 phosphor was standard.
The newer 545B came with the further improved [[T5470]] CRT (also used in the [[543B]], [[544]], [[546]] and [[547]]) and P31 phosphor as standard.


== Versions ==
== Versions ==
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{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Bandwidth | 30 MHz (33 MHz with a 50 MHz plug-in such as Type [[1A1]]) }}
{{Spec | Bandwidth | 30 MHz (33 MHz with a 50 MHz plug-in such as Type [[1A1]]) }}
{{SpecGroup|545B}}
{{Spec | Sweep | 0.1 μs/div to 5 s/div, 1−2−5 }}
{{Spec | CRT | T5470-31-2, 10 kV acceleration }}
{{Spec | Probes | 2 P6006 probes with BNC connectors }}
{{EndSpecs}}
{{EndSpecs}}


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=== 545B Vertical Path ===
=== 545B Vertical Path ===
The Type 545B differs significantly from the 545 and 545A.   
The Type 545B differs significantly from the 545 and 545A.
It was designed by [[Dave Barton]].   
It has a partly solid-state, non-distributed vertical amp, and uses the [[154-0478-00]] CRT which is also used in the [[544]], [[546]], and [[547]].  Improvements in CRT design, including reduced deflection plate capacitance and increased sensitivity increased the vertical scale in the 545B from 4 to 6 divisions.  The improved CRT also uses a ceramic envelope, with flat glass faceplate that has internal graticule markings, eliminating parallax errors.
It has a partly solid-state, non-distributed vertical amp, and uses the [[154-0478-00]] CRT which is also used in the [[544]], [[546]], and [[547]].  Improvements in CRT design, including reduced deflection plate capacitance and increased sensitivity increased the vertical scale in the 545B from 4 to 6 divisions.  The improved CRT also uses a ceramic envelope, with flat glass faceplate that has internal graticule markings, eliminating parallax errors.
Ken Chorney says:
<blockquote>
Just wanted to add an alternative supplier for replacement fan mounts for the Tektronix 545 oscilloscope fan.
Digi-Key currently stocks two part numbers which fit and work perfectly: RPC1597-ND and EAR1345-ND.
Both are 1/2" length (same as original) and both have 8-32 male threaded ends (same as original).
Both are slightly smaller in diameter (0.4" vs. the 0.5" originals) but this does not affect their fit at all and likely does not affect their function appreciably.
I have installed three of the RPC1597-ND standoffs in my 545 and they fit and work perfectly.
</blockquote>


==Links==
==Links==
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Tek 545 early 5.jpg|545, early style
Tek 545 early 5.jpg|545, early style
Tek 545 early 6.jpg|545, early style
Tek 545 early 6.jpg|545, early style
Tek 545 distributed amplifier on.jpg|Distributed amplifier
Tek 545 vertical rackmount.jpg|545 in vertical rackmount form
</gallery>
</gallery>


===545A===
===545A===
<gallery>
<gallery>
Tek-545A-front.jpg
Tek 545a 291 1.jpg        | 545A front
Tek 545a 291 1.jpg        | 545A front
Tek 545a 291 2.jpg
Tek 545a 291 2.jpg
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Tek 545a 291 4.jpg
Tek 545a 291 4.jpg
Tek 545a 291 5.jpg
Tek 545a 291 5.jpg
Tek 545a 291 6.jpg
Tek 545a 291 6.jpg       | 545A interior, right side
Tek 545a 291 7.jpg
Tek 545a 291 7.jpg       | 545A interior, left side
Tek-545a-right1.jpg      | 545A interior, right side detail (time base B chassis open)
Tek-545a-timebase-a.jpg  | 545A interior, right side detail (time base A)
Tek-545a-timebase-b.jpg  | 545A interior, right side detail (time base B)
Tek-545a-hv-1.jpg        | 545A interior, HV supply
Tek-545a-hv-2.jpg        | 545A interior, HV supply
Tek-545a-hv-osc.jpg      | 545A interior, HV oscillator tube
Tek-545a-rectifier.jpg    | 545A interior, rectifier
Tek-545a-bottom1.jpg      | 545A interior, bottom view
Tek-545a-bottom2.jpg      | 545A interior, bottom view (DC voltage regulator section detail)
Tek-545a-bottom3.jpg      | 545A interior, bottom view (distributed amplifier section detail)
Tek 545a delay line.jpg  | 545A Delay line
Tek 545a delay line.jpg  | 545A Delay line
Tek_545a_blockdiagram.png | 545A block diagram
Tek_545a_blockdiagram.png | 545A block diagram
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Tek 545a on 202-1.jpg|545A on a Tek 202-1 cart
Tek 545a on 202-1.jpg|545A on a Tek 202-1 cart
Tek 545a controls.jpg|545A controls
Tek 545a controls.jpg|545A controls
Tek 545a trace.jpg|545A trace
Tek 545a trace2.jpg|545A trace
</gallery>
</gallery>


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Tek rm45a 404.jpg|RM 45A with standard B timebase
Tek rm45a 404.jpg|RM 45A with standard B timebase
Tek rm45a on pallet.jpg|RM 45A with raster B timebase, MOD 116B
Tek rm45a on pallet.jpg|RM 45A with raster B timebase, MOD 116B
tek_rm45a_goddard.jpg|RM45A from NASA
</gallery>
</gallery>


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<gallery>
<gallery>
Tek 545b front.jpg          | 545B front
Tek 545b front.jpg          | 545B front
545B guernsey.JPG            | a british made 545B (Tektronix Guernsey LTD. )
Tek 545b trace.jpg          | 545B with [[M|Type M plug-in]]
Tek 545b trace.jpg          | 545B with [[M|Type M plug-in]]
Tek 545b right.jpg            | 545B right side
Tek 545b right.jpg            | 545B right side
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