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* [http://w140.com/2235_sm.pdf Tektronix 2235 Manual (PDF)]
{{Oscilloscope Sidebar
|manufacturer=Tektronix
|series=2200-series scopes
|model=2235
|summary=100 MHz dual-trace portable scope
|image=Tek-2235.jpg
|caption=Tektronix 2235
|introduced=1984
|discontinued=1992
|designers=
|manuals=
==2235==
* [[Media:070-4206-00.pdf|2235 Service Manual 070-4206-00]]
* [[Media:070-4207-00.pdf|2235 Operators Manual 070-4207-00 1987]] / [[Media:070-4207-00 (1983).pdf|1983]]
 
==2235A==
* [[Media:070-7683-00.pdf|2235A Instruction Manual 070-7683-00]]
 
==Service Info==
* [[Media:Tek_2200_PSU_Noise_Mod-54681.pdf|PSU Audible Noise Mod #54681]]
* [[Media:SUP3010.pdf|Tek Service Update Plan 3010, CRT filament voltage reduction]]
* [[Media:050-2242-03.pdf|Product Modification 050-2242-03 - PSU replacement parts]]
}}
The '''Tektronix 2235''' is a 100 MHz dual-trace, dual-timebase portable scope.
 
It was also sold to the military under the model name [[AN/USM-488]].
 
The [[2236]] sister model adds a built-in DMM/counter.
 
{{BeginSpecs}}
{{Spec | Bandwidth | 90 MHz at 2 mV/Div, 100 MHz at 5 mV/Div and above; switchable 20 MHz limit }}
{{Spec | Rise time | 3.9 ns at 2 mV/Div, 3.5 ns at 5 mV/Div and above  }}
{{Spec | Deflection | 2 mV/Div to 5 V/Div, 1−2−5, ±2%, and variable 2.5:1  }}
{{Spec | Time base | 50 ns/Div to 500 ms/Div (B timebase to 50 ms/Div), 1−2−5, ×10 magnifier for fastest deflection of 5 ns/Div  }}
{{Spec | Input impedance | 1 MΩ // 20 pF  }}
{{Spec | Trigger sensitivity | 0.3 Div or 35 mV up to 10 MHz, 1 Div or 120 mV up to 60 MHz, 1.5 Div or 200 mV up to 100 MHz  }}
{{Spec | CRT | 80×100 mm² display area, P31 phosphor, 14 kV acceleration voltage }}
{{Spec | Power | 90−250 V<sub>AC</sub>, 48 to 440 Hz, 40 W  }}
{{Spec | Size | 137 mm × 327 mm × 440 mm  (5.4" × 12.9" × 17.3") }}
{{Spec | Weight | 5.2 kg (11.5 lb) without accessories }}
{{Spec | Probes | Two [[P6122]] ×10 voltage probes (010-6122-01) }}
{{Spec | Features |
* Delayed timebase
* X−Y mode
* Z input
}}
{{EndSpecs}}
 
==Prices==
 
{| class="wikitable"
|-
! Year
! 1984
|-
! Catalog Price
| $1,650
|-
! In 2023 Dollars
| $4,900
|}
 
* 1984: $1,650 ($4,300 in 2021 dollars)
 
==Links==
* [http://www.hakanh.com/dl/docs/troubleshooting_tips_on_2200_ps.pdf Troubleshooting tips on 2200 PSU]
* [https://www.youtube.com/watch?v=lrXCVg6T-ek Tektronix 2235 Oscilloscope Restoration] by NFM @ YouTube
* [https://www.eevblog.com/forum/repair/tektronix-2232-scope-in-need-of-a-doctor/ 2232/5/6 PSU repair thread]
* [http://www.hakanh.com/dl/docs/hardtofind/2200_ps_noise.pdf Power Supply Audible Noise]
 
==Pictures==
<gallery>
Tek-2235.jpg | 2235
Tek-2235a.jpg | 2235A
Tek 106 on 2235.jpg | This 2235 has a 3.44 ns rise time.
Tek 2235 trace.jpg
Tek 2235 controls.jpg
Tek an usm 488 1.jpeg|AN/USM-488
Tek an usm 488 3.jpeg|AN/USM-488
Tek an usm 488 4.jpeg|AN/USM-488
Tek an usm 488 5.jpeg|AN/USM-488
Tek an usm 488 6.jpeg|AN/USM-488
Tek an usm 488 7.jpeg|AN/USM-488
Tek an usm 488 8.jpeg|AN/USM-488
Tek an usm 488 9.jpeg|AN/USM-488
Tek an usm 488 10.jpeg|AN/USM-488
Tek an usm 488 11.jpeg|AN/USM-488
Tek an usm 488 12.jpeg|AN/USM-488
Tek an usm 488 13.jpeg|AN/USM-488
Tek an usm 488 14.jpeg|AN/USM-488
Tek an usm 488 15.jpeg|AN/USM-488
Tek an usm 488 16.jpeg|AN/USM-488
Tek an usm 488 17.jpeg|AN/USM-488
</gallery>
 
==Components==
{{Parts|2235}}
 
[[Category:2200 series scopes]]

Latest revision as of 13:37, 1 December 2023

Tektronix 2235
100 MHz dual-trace portable scope
Tektronix 2235

Produced from 1984 to 1992

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 2235 is a 100 MHz dual-trace, dual-timebase portable scope.

It was also sold to the military under the model name AN/USM-488.

The 2236 sister model adds a built-in DMM/counter.

Key Specifications

Bandwidth 90 MHz at 2 mV/Div, 100 MHz at 5 mV/Div and above; switchable 20 MHz limit
Rise time 3.9 ns at 2 mV/Div, 3.5 ns at 5 mV/Div and above
Deflection 2 mV/Div to 5 V/Div, 1−2−5, ±2%, and variable 2.5:1
Time base 50 ns/Div to 500 ms/Div (B timebase to 50 ms/Div), 1−2−5, ×10 magnifier for fastest deflection of 5 ns/Div
Input impedance 1 MΩ // 20 pF
Trigger sensitivity 0.3 Div or 35 mV up to 10 MHz, 1 Div or 120 mV up to 60 MHz, 1.5 Div or 200 mV up to 100 MHz
CRT 80×100 mm² display area, P31 phosphor, 14 kV acceleration voltage
Power 90−250 VAC, 48 to 440 Hz, 40 W
Size 137 mm × 327 mm × 440 mm (5.4" × 12.9" × 17.3")
Weight 5.2 kg (11.5 lb) without accessories
Probes Two P6122 ×10 voltage probes (010-6122-01)
Features
  • Delayed timebase
  • X−Y mode
  • Z input

Prices

Year 1984
Catalog Price $1,650
In 2023 Dollars $4,900
  • 1984: $1,650 ($4,300 in 2021 dollars)

Links

Pictures

  • 2235

    2235

  • 2235A

    2235A

  • This 2235 has a 3.44 ns rise time.

    This 2235 has a 3.44 ns rise time.

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

  • AN/USM-488

    AN/USM-488

Components

Some Parts Used in the 2235

Part Part Number(s) Class Description Used in
2N5454 151-1042-00 Discrete component dual n-channel JFET 7B80 • 7B53A • 2213 • 2215 • 2235 • T912 • T921 • T922 • T932 • T935
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