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The Tektronix 213 is a miniature portable oscilloscope [[introduced in 1975]].   
{{Oscilloscope Sidebar |
It combines a 3 1/2-digit DMM and a 1MHz single channel scope in one unit.  
title=Tektronix 213 |
The maximum sweep rate is 0.4 microsec/div with x10 sweep magnifier.  
image=Tektronix 213DMM pic 2.jpg |
caption=Tektronix 213, front view |
introduced=1975 |
discontinued=1988 |
summary=Miniature portable 1 MHz oscilloscope and TRMS digital multimeter |
manuals=
* [[Media:070-1481-00.pdf|Tektronix 213 Service Manual, 1989 Rev.]] (PDF, OCR, 76MB)
<small>
'''Modifications'''
* [[Media:050-0811-01.pdf|Replacement of U335 (Trigger &amp; Sweep Generator IC)]]
</small>
}}
The '''Tektronix 213''' is a miniature portable oscilloscope [[introduced in 1975]].   
It combines a -digit DMM and a 1 MHz single channel scope in one unit.  
The maximum sweep rate is 0.4 μs/div with ×10 sweep magnifier.  
 
The 213 provides true RMS voltage and current measurements.
The 213 provides true RMS voltage and current measurements.
It is battery or AC line powered.
It is battery or AC line powered.
{{BeginSpecs}}
{{SpecGroup | ''Multimeter Section''  }}
{{Spec | DC Volts | 0.1 V to 1000 V,  Input Resistance: 10 MΩ <br />Accuracy,  0.1 V & 1 V:  ±0.1%, ±3 counts; 10 V & 100 V: ±0.15%, ±1 count; 1000 V: ±0.2%, ±1 count}}
{{Spec | True RMS Volts | DC Volts | 0.1 V to 1000 V,  Input Resistance: 10 MΩ <br />Accuracy, 0.1 V: ±2.5% (DC); ±1.5% (40 Hz – 4 kHz); ±3.5% (4 kHz – 40 kHz);  1, 10, 100 V:  ±2% (DC); ±1% (40 Hz – 40 kHz); 1000 V:  ±2% (DC); ±1% (40 Hz – 4 kHz); ±2% (4 kHz – 40 kHz) }}
{{Spec | DC Current | 0.1 to 1000 mA <br />Accuracy: 0.1 mA:  ±0.5%, ±3 counts; 1 mA – 1000 mA: ±0.25%, ±3 counts }}
{{Spec | True RMS Current | 0.1 to 1000 mA <br />Accuracy, 0.1 mA:  ±2.5%, ±5 counts (DC); ±1.5%, ±5 counts (40 Hz – 4 kHz); ±4.5%, ±5 counts (4 kHz − 40 kHz);  1 mA – 1000 mA: ±2.5%, ±5 counts (DC); ±1.5%, ±5 counts (40 Hz – 4 kHz); ±3.5%,±5 counts (4 kHz − 40 kHz) }}
{{Spec | Current range input resistance | 0.1 mA: 1000 Ω; 1 mA: 100 Ω; 10 mA: 10.2 Ω; 100 mA: 1.2 Ω; 1000 mA: 0.3 Ω }}
{{Spec | Resistance | 1 KΩ: ±0.5%, ±3 counts; 10 KΩ – 1 MΩ:  ±0.5%, ±1 count; 10 MΩ: ±1%, ±1 count }}
{{SpecGroup | ''Oscilloscope Section'' }}
{{Spec | Voltage ranges | 5 mV/Div to  – 100 V/Div, ±3% }}
{{Spec | Bandwidth (Voltage) | DC – 1 MHz (at 10 mV/Div and below, 400 kHz) }}
{{Spec | Current ranges | 5 µA/Div to 100 mA/Div, ±3% }}
{{Spec | Bandwidth (Current) | DC – 200 kHz (5 µA/Div – 10 μA/Div); DC – 400 kHz (20 μA/Div – 200 mA/Div) }}
{{Spec | Input resistance | 10 MΩ // 150 pF (5 mV/Div – 1 V/Div), 100 pF (2 V/Div to – 100 V/Div) }}
{{Spec | Rise time |  875 ns (5 mV/Div – 10 mV/Div); 350 ns (20 mV/Div – 100 V/Div) }}
{{Spec | Sweep |  500 ms/Div – 2 µs/Div, ±5% (magnified or unmagnified) }}
{{Spec | Batteries |  2 &times; “D” NiCd cells }}
{{Spec | Operating time | 3.5 hours typical at maximum intensity after full charge cycle}}
{{Spec | Charge time | 16 h}}
{{Spec | Mains power | 90 – 136 V<sub>AC</sub>. 48 – 62 Hz (Option 1: 180 – 250 V<sub>DC</sub>. or 180 – 250 V<sub>AC</sub>, 48 – 62 Hz) }}
{{Spec | Power consumption |  Less than 8 watts }}
{{EndSpecs}}
==Links==
* [http://w140.com/kurt/tek_new_products_mar-apr_1975.pdf New Products Mar/Apr 1975]
* [http://www.eevblog.com/2014/06/11/eevblog-628-tektronix-213-vintage-portable-oscilloscope-teardown/ EEVblog #628 – Tektronix 213 Vintage Portable Oscilloscope Teardown Video] and [https://www.flickr.com/photos/eevblog/14394189202/ Photo Set]
* [https://www.youtube.com/watch?v=fPmQ9Ce4TL0 Tektronix 213 DMM Repair Progress video]
==Internals==
The 213 makes use of two Tek-made custom chips, the [[155-0048-01]] trigger sweep circuit, and the [[155-0114-00]] 7-segment character generator in the DVM circuit.  In addition, it includes some standard opamps (741, 324) and a 4-digit decimal counter ([[Mostek MK5007]]).
==Pictures==


<gallery>
<gallery>
Image:Tektronix 213DMM pic 1.jpg
Tek213-front-1.jpg | Tek 213 front
Image:Tektronix 213DMM side view.jpg
Tektronix 213DMM pic 2.jpg|In DMM mode
Image:Tektronix 213DMM pic 2.jpg|In DMM mode
200 series compared.jpg | Tek [[214]] (top), [[213]] (center) and [[211]] (bottom) stacked
Image:Tektronix 213DMM Attenuator and Input Amplifier.jpg|Attenuator and Input Amplifier Schematic
213 compared to 585.jpg | Tek 213 size comparison with 500 series plug-in bay (in a [[585]])
Image:Tektronix 213DMM GM and RMS Converter.jpg|GM and RMS Converter Schematic
213-Stefan-140333.jpg | 213 with pouch
Image:Tektronix 213DMM Battery Charger and Power Supply.jpg|Battery Charger and Power Supply Schematic
213-Stefan-140342.jpg | right side
Image:Tektronix 213DMM HV and CRT.jpg|HV and CRT Schematic
213-Stefan-162337.jpg | without covers, bottom/left
Image:Tektronix 213DMM A-D Converter and Character Generator.jpg|A-D Converter and Character Generator Schematic
213-Stefan-162344.jpg | without covers, left
213-Stefan-162352.jpg | without covers, top
213-Stefan-172313.jpg | without covers, operating, top/right
213-Stefan-162409.jpg | Plastic case halves
213-Stefan-162419.jpg | Original battery, corroded
213-Stefan-162428.jpg
213-Stefan-162443.jpg
213-Stefan-172154.jpg | In DMM mode
213-Stefan-172309.jpg
213-Stefan-172243.jpg | In scope mode
213-Stefan-172258.jpg
Tektronix 213DMM pic 1.jpg     | Catalog image, front
Tektronix 213DMM side view.jpg | Catalog image, side
</gallery>
</gallery>
===Schematics===
<gallery>
Tektronix 213DMM Attenuator and Input Amplifier.jpg|Attenuator and Input Amplifier Schematic
Tektronix 213DMM GM and RMS Converter.jpg|GM and RMS Converter Schematic
Tektronix 213DMM Battery Charger and Power Supply.jpg|Battery Charger and Power Supply Schematic
Tektronix 213DMM HV and CRT.jpg|HV and CRT Schematic
Tektronix 213DMM A-D Converter and Character Generator.jpg|A-D Converter and Character Generator Schematic
</gallery>
[[Category:200 series scopes]]
[[Category:Specifications needed]]
[[Category:Manual needed]]

Revision as of 01:20, 17 October 2019

{{{manufacturer}}} 
Miniature portable 1 MHz oscilloscope and TRMS digital multimeter
Tektronix 213, front view

Produced from 1975 to 1988

Manuals

Modifications

(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 213 is a miniature portable oscilloscope introduced in 1975. It combines a 3½-digit DMM and a 1 MHz single channel scope in one unit. The maximum sweep rate is 0.4 μs/div with ×10 sweep magnifier.

The 213 provides true RMS voltage and current measurements. It is battery or AC line powered.

Key Specifications

     — Multimeter Section
DC Volts 0.1 V to 1000 V, Input Resistance: 10 MΩ
Accuracy, 0.1 V & 1 V: ±0.1%, ±3 counts; 10 V & 100 V: ±0.15%, ±1 count; 1000 V: ±0.2%, ±1 count
True RMS Volts DC Volts
DC Current 0.1 to 1000 mA
Accuracy: 0.1 mA: ±0.5%, ±3 counts; 1 mA – 1000 mA: ±0.25%, ±3 counts
True RMS Current 0.1 to 1000 mA
Accuracy, 0.1 mA: ±2.5%, ±5 counts (DC); ±1.5%, ±5 counts (40 Hz – 4 kHz); ±4.5%, ±5 counts (4 kHz − 40 kHz); 1 mA – 1000 mA: ±2.5%, ±5 counts (DC); ±1.5%, ±5 counts (40 Hz – 4 kHz); ±3.5%,±5 counts (4 kHz − 40 kHz)
Current range input resistance 0.1 mA: 1000 Ω; 1 mA: 100 Ω; 10 mA: 10.2 Ω; 100 mA: 1.2 Ω; 1000 mA: 0.3 Ω
Resistance 1 KΩ: ±0.5%, ±3 counts; 10 KΩ – 1 MΩ: ±0.5%, ±1 count; 10 MΩ: ±1%, ±1 count
     — Oscilloscope Section
Voltage ranges 5 mV/Div to – 100 V/Div, ±3%
Bandwidth (Voltage) DC – 1 MHz (at 10 mV/Div and below, 400 kHz)
Current ranges 5 µA/Div to 100 mA/Div, ±3%
Bandwidth (Current) DC – 200 kHz (5 µA/Div – 10 μA/Div); DC – 400 kHz (20 μA/Div – 200 mA/Div)
Input resistance 10 MΩ // 150 pF (5 mV/Div – 1 V/Div), 100 pF (2 V/Div to – 100 V/Div)
Rise time 875 ns (5 mV/Div – 10 mV/Div); 350 ns (20 mV/Div – 100 V/Div)
Sweep 500 ms/Div – 2 µs/Div, ±5% (magnified or unmagnified)
Batteries 2 × “D” NiCd cells
Operating time 3.5 hours typical at maximum intensity after full charge cycle
Charge time 16 h
Mains power 90 – 136 VAC. 48 – 62 Hz (Option 1: 180 – 250 VDC. or 180 – 250 VAC, 48 – 62 Hz)
Power consumption Less than 8 watts

Links

Internals

The 213 makes use of two Tek-made custom chips, the 155-0048-01 trigger sweep circuit, and the 155-0114-00 7-segment character generator in the DVM circuit. In addition, it includes some standard opamps (741, 324) and a 4-digit decimal counter (Mostek MK5007).

Pictures

Schematics