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{{Plugin Sidebar |
{{Plugin Sidebar
manufacturer=Tektronix | type=7D12 |
|manufacturer=Tektronix
summary=Digital meter plugin |
|series=7000-series scopes
image=7d12-crop.jpg |
|type=7D12
caption=7D12 with M2 Sample and Hold Module |
|summary=digital meter plugin
series=7000-series scopes |
|image=7d12-m2-front.jpg
introduced=1974 |
|caption=7D12 with M2 Sample and Hold Module
discontinued=1986 |
|introduced=1974
manuals=
|discontinued=1986
* [[Media:070-1470-00.pdf|Tektronix 7D12 Service]] (OCR, PDF)
|manuals=
* [[Media:070-1469-00.pdf| M1-M2-M3 Operators Manual (PDF)]]
* [[Media:070-1470-00.pdf|Tektronix 7D12 Service]] (OCR)
* [[Media:7D12-M2.pdf | M2 Sample/Hold (PDF)]]
* [[Media:070-1469-00.pdf| M1-M2-M3 Operators Manual]]
* [[Media:070-1513-00.pdf | M3 RMS Module (PDF)]]
* [[Media:Tek m1 interim.pdf |Tektronix M1 Interim Manual]]
* [[Media:7000 Series Digital Plug-In Applications.pdf|7000 Series Digital Plug-In Applications (PDF)]]
* [[Media:7D12-M2.pdf | M2 Sample/Hold]]
* [[Media:070-1513-00.pdf | M3 RMS Module]]
* [[Media:7000 Series Digital Plug-In Applications.pdf|7000 Series Digital Plug-In Applications]]
}}
}}
The '''Tektronix 7D12''' is an A/D converter (digital meter) plug-in for [[7000-series scopes]]. The A/D converter can be triggered internally (when installed in a horizontal bay), manually by a front panel switch, or externally from a trigger source. The 7D12 will trigger automatically at approximately 4 Hz if set to Auto. It contains a vertical display amplifier that displays the signal being applied to the module and a gate display amplifier that displays a representation of the 7D12 internal gate signal.  
The '''Tektronix 7D12''' is an A/D converter (digital meter) plug-in for [[7000-series scopes]]. The A/D converter can be triggered internally (when installed in a horizontal bay), manually by a front panel switch, or externally from a trigger source. The 7D12 will trigger automatically at approximately 4 Hz if set to Auto. It contains a vertical display amplifier that displays the signal being applied to the module and a gate display amplifier that displays a representation of the 7D12 internal gate signal.  
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* M1 is a digital multimeter module with DC voltage, resistance and temperature (with [[P6058]]) ranges. It does not produce an analog output signal.
* M1 is a digital multimeter module with DC voltage, resistance and temperature (with [[P6058]]) ranges. It does not produce an analog output signal.
* M2 is a sample and hold module that can measure voltage from ground to a selected point, or the difference voltage between two points defined by a trigger signal.  When triggered by the delayed gate signal from a time base, this allows cursor-like measurements to be made.  The module has an aperture time of only 10 ns.  With repetitive signals, the period between the sampled points can be as short as 30 ns, in single shot mode it must be at least 150 μs. <br />Input sensitivity is selectable between ±2 V (100/200/500 mV/Div) and ±20 V (1/2/5 V/Div) ranges.  The input has a ring to detect a ×10 probe with [[readout pin]] ([[P6055]] recommended) and adjusts the display accordingly. Signal bandwidth is 25 MHz.
* M2 is a sample and hold module that can measure voltage from ground to a selected point, or the difference voltage between two points defined by a trigger signal.  When triggered by the delayed gate signal from a time base, this allows cursor-like measurements to be made.  The module has an aperture time of only 10 ns.  With repetitive signals, the period between the sampled points can be as short as 30 ns, in single shot mode it must be at least 150 μs. <br />Input sensitivity is selectable between ±2 V (100/200/500 mV/Div) and ±20 V (1/2/5 V/Div) ranges.  The input has a ring to detect a ×10 probe with [[readout pin]] ([[P6055]] recommended) and adjusts the display accordingly. Signal bandwidth is 25 MHz.
* M3 is a True RMS module with floating inputs. It produces an analog output signal with a 3 dB bandwidth of 700 kHz and vertical sensitivities between 100 mV/Div. to 500 V/Div. in a 1,2,5 sequence.  
* M3 is a True RMS module with floating inputs. It produces an analog output signal with a 3 dB bandwidth of 700 kHz and vertical sensitivities between 100 mV/Div to 500 V/Div in a 1−2−5 sequence.  The RMS converter is implemented with opamps, a dual transistor, and transistors from a [[CA3046]] array.
* [[067-0700-00]] is a calibration fixture.
* [[067-0700-00]] is a calibration fixture.


==Links==
==Links==
* [[Media:Tekscope 1975 V7 N5.pdf | TekScope Vol. 7 No. 5, 1975]] p.15+: Dave McCullough, ''Delayed gate aids oscilloscope digital measurements''
{{Documents|Link=7D12}}


==Pictures==
==Pictures==


<gallery>
<gallery>
Tek 7d12 m2.jpg           | 7D12 with M2 Sample and Hold Module
7d12-m2-front.jpg         | 7D12 with M2 Sample and Hold Module
Tek 7d12 with m1 m2 m3.jpg | 7D12 with M1, M2 and M3
Tek 7d12 with m1 m2 m3.jpg | 7D12 with M1, M2 and M3
7d12-empty-left.jpg        | 7D12 without plug-in, left side
7d12-empty-left.jpg        | 7D12 without plug-in, left side
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M2 display 1.jpg          | 7D12/M2 displaying sawtooth from [[585]] (lower trace), triggered with delayed gate output from a [[7B53A]] (intensified).
M2 display 1.jpg          | 7D12/M2 displaying sawtooth from [[585]] (lower trace), triggered with delayed gate output from a [[7B53A]] (intensified).
M2 display 2.jpg          |
M2 display 2.jpg          |
Master sampler cartoon.png | "Master Sampler" cartoon in schematic
Master sampler cartoon.png | "Master Sampler" [[cartoon]] in schematic
</gallery>
</gallery>


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Tek m3 1.jpg              | M3 plug-in, front
Tek m3 1.jpg              | M3 plug-in, front
Tek m3 2.jpg              | M3 plug-in, rear
Tek m3 2.jpg              | M3 plug-in, rear
7D12-M3 Least Significant Digit Blanking cartoon.png | "Least Significant Digit Blanking" [[cartoon]] in schematic
</gallery>
</gallery>
==Components==
{{Parts|7D12}}


[[Category:7000 series special-function plugins]]
[[Category:7000 series special-function plugins]]

Latest revision as of 02:38, 26 February 2024

The Tektronix 7D12 is an A/D converter (digital meter) plug-in for 7000-series scopes. The A/D converter can be triggered internally (when installed in a horizontal bay), manually by a front panel switch, or externally from a trigger source. The 7D12 will trigger automatically at approximately 4 Hz if set to Auto. It contains a vertical display amplifier that displays the signal being applied to the module and a gate display amplifier that displays a representation of the 7D12 internal gate signal.

Tektronix 7D12
digital meter plugin
7D12 with M2 Sample and Hold Module

Compatible with 7000-series scopes

Produced from 1974 to 1986

Manuals

The 7D12 accepts plug-in modules M1, M2, or M3.

  • M1 is a digital multimeter module with DC voltage, resistance and temperature (with P6058) ranges. It does not produce an analog output signal.
  • M2 is a sample and hold module that can measure voltage from ground to a selected point, or the difference voltage between two points defined by a trigger signal. When triggered by the delayed gate signal from a time base, this allows cursor-like measurements to be made. The module has an aperture time of only 10 ns. With repetitive signals, the period between the sampled points can be as short as 30 ns, in single shot mode it must be at least 150 μs.
    Input sensitivity is selectable between ±2 V (100/200/500 mV/Div) and ±20 V (1/2/5 V/Div) ranges. The input has a ring to detect a ×10 probe with readout pin (P6055 recommended) and adjusts the display accordingly. Signal bandwidth is 25 MHz.
  • M3 is a True RMS module with floating inputs. It produces an analog output signal with a 3 dB bandwidth of 700 kHz and vertical sensitivities between 100 mV/Div to 500 V/Div in a 1−2−5 sequence. The RMS converter is implemented with opamps, a dual transistor, and transistors from a CA3046 array.
  • 067-0700-00 is a calibration fixture.

Links

Documents Referencing 7D12

Document Class Title Authors Year Links
Tekscope 1973 V5 N6 Nov 1973.pdf Article A fast A/D plug-in for the oscilloscope Hideki Iwata • Ken Sternes 1973 7D12 • M1 • M2 • M3
Tekscope 1975 V7 N5.pdf Article Delayed Gate Aids Oscilloscope Digital Measurements Dave McCullough 1975 7D12 • 7D14 • 7D15 • 7B53A
7000 Series Digital Plug-In Applications.pdf Application Note 7000 Series Digital Plug-In Applications 1977 7D10 • 7D11 • 7D12 • 7D13 • 7D14 • 7D15

Pictures

  •  

    7D12 with M2 Sample and Hold Module

  •  

    7D12 with M1, M2 and M3

  •  

    7D12 without plug-in, left side

  •  

    7D12 without plug-in, right side

  •  

    7D12 with M2 plug-in, left side

  •  

    7D12 with M2 plug-in, right side

  •  

    067-0700-00 calibration plug-in

M1

  •  

    M1 plug-in, front

  •  

    M1 plug-in, rear

M2

  •  

    M2 front

  •  

    M2 plug-in, left side

  •  

    M2 plug-in, right side

  •  

    7D12/M2 displaying sawtooth from 585 (lower trace), triggered with delayed gate output from a 7B53A (intensified).

  •  
  •  

    "Master Sampler" cartoon in schematic

M3

  •  

    M3 plug-in, front

  •  

    M3 plug-in, rear

  •  

    "Least Significant Digit Blanking" cartoon in schematic

Components

Some Parts Used in the 7D12

Part Part Number(s) Class Description Used in
155-0022-00 155-0022-00 • 155-0022-01 Monolithic integrated circuit analog multiplexer 147 • 148 • 149 • 335 • 468 • 1430 • 1441 • 1461 • 1900 • 1910 • 2220 • 2221 • 2230 • 5223 • 5403 • 5440 • 5441 • 5443 • 5444 • 5A38 • 7313 • 7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • R7912 • 7912AD • 7912HB • 7904 • R7903 • 7904A • 7934 • 7A12 • 7A18 • 7A18A • 7A18N • 7B52 • 7B53N • 7D10 • 7D11 • 7D12 • NT-7000 • P7001
155-0090-00 155-0090-00 • 155-0090-01 • 155-0090-02 Monolithic integrated circuit four-decade counter, latch and D/A converter 7B85 • 7D01 • 7D12 • 7D15 • 7J20
155-0171-00 155-0171-00 Monolithic integrated circuit four-decade counter, latch and D/A converter 7B85 • 7D01 • 7D12 • 7D15 • 7J20
CA3046 156-0048-00 Monolithic integrated circuit transistor array 7104 • 7403N • 7503 • 7B53A • 7D12 • DM502 • FG504 • S-52 • Telequipment D34 • 7603 • 7613 • 7623 • 7633
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