2235: Difference between revisions

Latest revision as of 13:37, 1 December 2023

Tektronix 2235

100 MHz dual-trace portable scope

Produced from 1984 to 1992

Manuals

2235

2235A

2235A Instruction Manual 070-7683-00

Service Info

(All manuals in PDF format unless noted otherwise)

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 V_AC, 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

Troubleshooting tips on 2200 PSU
Tektronix 2235 Oscilloscope Restoration by NFM @ YouTube
2232/5/6 PSU repair thread
Power Supply Audible Noise

Pictures

2235
2235A
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

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

@@ Line 1: / Line 1: @@
-{{Oscilloscope Sidebar |
+{{Oscilloscope Sidebar
-title=Tektronix 2235 |
+|manufacturer=Tektronix
-summary=100 MHz dual-trace portable scope |
+|series=2200-series scopes
-image=Tek-2235.jpg |
+|model=2235
-caption=Tektronix 2235 |
+|summary=100 MHz dual-trace portable scope
-introduced=1984 |
+|image=Tek-2235.jpg
-discontinued=1992 |
+|caption=Tektronix 2235
-manuals=
+|introduced=1984
-* [http://w140.com/2235_sm.pdf Tektronix 2235 Service Manual (PDF, OCR)]
+|discontinued=1992
-* [http://w140.com/Oscope_Tek2235-op.pdf Tektronix 2235 Operators Manual (PDF)]
+|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]]
-* [[Media:070-4207-00.pdf|Tektronix 2235 Operators Manual (PDF, OCR)]]
+==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.
+It was also sold to the military under the model name [[AN/USM-488]].
 The [[2236]] sister model adds a built-in DMM/counter.
@@ Line 22: / Line 32: @@
 {{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 | 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  }}
@@ Line 29: / Line 39: @@
 {{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
@@ Line 38: / Line 49: @@
 ==Prices==
-* 1984: $1,650 (2017 value: $3,890)
+{| 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==
@@ Line 50: / Line 76: @@
 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]]