M: Difference between revisions

Latest revision as of 07:19, 6 December 2023

Tektronix Type M
20 MHz quad-channel amplifier Type M front view Compatible with 500-series scopes Produced from 1962 to 1973 Manuals Tektronix Type M Manual (OCR) Tektronix Type M Factory Calibration Procedure (OCR) Tektronix Type M Calibration Outline (OCR) Alternate copies Tektronix Type M Manual] (DjVu @ BAMA) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix Type M is a four-channel plug-in for 500-series scopes that was introduced in 1962, along with the Type O, and dropped after 1972. It was designed by Oz Svehaug and Glenn Parks.

Early versions had UHF connectors, later versions have BNC connectors for the inputs.

Key Specifications

Bandwidth	DC to 20 MHz
Rise time	17 ns
Deflection	20 mV/div to 10 V/div, 1–2–5
Modes	Each channel can be AC or DC coupled, inverted or straight, or disabled entirely. The enabled channels can operate in CHOP or ALT mode.

Internals

Each input goes through a step attenuator, is clamped by a neon bulb, and then is fed to the grid of a cathode follower made with a 7586 Nuvistor tube. Next, the signal goes to a PNP differential amplifier. Diodes in series with the collector signal of this differential amplifier are used for input channel switching. An internal differential signal bus connects the switched outputs of each of the input channels and feeds the signal to the output amplifier, which drives pins 1 and 3 of the 500-series plug-in connector. The output amplifier is two 12AU6 pentodes connected as a differential amplifier, followed by a 12AT7 dual triode acting as a cathode follower to drive the output with a relatively low impedance.

Pictures

Late Type M Front view
Late Type M Left view
Late Type M Right view
Early Type M Front
Early Type M Left
Early Type M Right
Type M Mod 210D
Channel Switching Schematic, SN 824 and below
Channel Switching Schematic, SN 825 and above
Four Channel Switched Amplifier Schematic, SN 2759 and below
Four Channel Switched Amplifier Schematic, SN 2760 and above
Type M in 556

Components

Some Parts Used in the M

Part	Part Number(s)	Class	Description	Used in
12AT7	154-0039-00	Vacuum Tube (Dual Triode)	dual high-gain triode	161 • 180 • 310 • 310A • 315 • 316 • 360 • 502 • 502A • 511A • 512 • 513 • 513D • 514 • 514AD • 514D • 516 • 524 • 529 • RM529 • 544 • 546 • 547 • 556 • 565 • 570 • 3A2 • 75 • 3A75 • 1M1 • A • B • C • G • H • K • L • ML • M • N • K • R • S • Z • Keithley 610B
12AU6	154-0040-00	Vacuum Tube (Pentode)	RF pentode	81 • 112 • 1L10 • 1L20 • 1L60 • 3L10 • 512 • 556 • 575 • 545 • 547 • 549 • 581 • 585 • A • B • C • G • K • H • L • ML • M • N • O • R • S • Z
7586	154-0306-00	Vacuum Tube (Triode)	Nuvistor triode	M • 1A1 • 1A2 • 1A5 • 10A2 • 10A2A • 11B1 • 11B2A • 321 • 321A • 3A1 • 3A1S • 3A3 • 3A5 • 3A6 • 3A7 • 3A8 • 3A74 • 3S76 • 3T77 • 3T77A • 3B5 • 4S1 • 4S2 • 6R1 • 6R1A • 9A1 • 9A2 • 82 • 86 • S-311

@@ Line 1: / Line 1: @@
-{{Plugin Sidebar | designers=|
+{{Plugin Sidebar
-manufacturer=Tektronix | model=Type M|
+|manufacturer=Tektronix
-summary=20 MHz quad channel amplifier|
+|series=500-series scopes
-image=Type m front.jpg |
+|type=Type M
-caption=Type M front view|
+|summary=20 MHz quad-channel amplifier
-introduced=1962 |
+|image=Type m front.jpg
-discontinued=1973 |
+|caption=Type M front view
-series=[[500-series scopes]]|
+|introduced=1962
-manuals=
+|discontinued=1973
-* [http://w140.com/mmm/tek-m.pdf Tektronix Type M Manual (PDF)]
+|designers=Oz Svehaug;Glenn Parks
-* [http://bama.edebris.com/manuals/tek/m/ Tektronix Type M Manual (BAMA)]
+|manuals=
-<!-- * [http://w140.com/tek_fcp/tek_type_m_factory_cal_proc.pdf Tektronix Type M Factory Calibration Procedure (PDF)] -->
+* [[Media:070-295.pdf|Tektronix Type M Manual]] (OCR)
+* [[Media:tek_type_m_fcp.pdf|Tektronix Type M Factory Calibration Procedure]] (OCR)
-* [[Media:070-295.pdf|Tektronix Type M Manual (PDF, OCR, bad-OCR)]]
+* [[Media:Tek type m cal outline.pdf|Tektronix Type M Calibration Outline]] (OCR)
-* [[Media:tek_type_m_fcp.pdf|Tektronix Type M Factory Calibration Procedure (PDF, OCR)]]
+<small>
-* [[Media:Tek type m cal outline.pdf|Tektronix Type M Calibration Outline (PDF, OCR)]]
+'''Alternate copies'''
+* [https://bama.edebris.com/manuals/tek/m/ Tektronix Type M Manual]] (DjVu @ BAMA)
+</small>
 }}
-The '''Tektronix Type M''' is a four-channel plug-in for [[500-series scopes]].
+The '''Tektronix Type M''' is a four-channel plug-in for [[500-series scopes]] that was [[introduced in 1962]], along with the [[O|Type O]], and dropped after 1972.
 It was designed by [[Oz Svehaug]] and [[Glenn Parks]].
-Early versions had [[UHF connector]]s for the inputs.
-Later versions have [[BNC connector]]s for the inputs.
-Type M was [[introduced in 1962]], along with the [[O|Type O]], and dropped after 1972.
-{{MissingSpecs}}
+Early versions had [[UHF connector]]s, later versions have [[BNC connector]]s for the inputs.
-The risetime is 17 nanoseconds, bandwidth is DC to 20 MHz.
+{{BeginSpecs}}
-Maximum sensitivity is 20 mV/div.
+{{Spec | Bandwidth | DC to 20 MHz }}
-Each channel can be AC or DC coupled, inverted or straight, or disabled entirely.
+{{Spec | Rise time | 17 ns }}
-The enabled channels can operate in CHOP or ALT mode.
+{{Spec | Deflection | 20 mV/div to 10 V/div, 1–2–5 }}
+{{Spec | Modes | Each channel can be AC or DC coupled, inverted or straight, or disabled entirely. The enabled channels can operate in CHOP or ALT mode. }}
+{{EndSpecs}}
 ==Internals==
-Each input goes through a step attenuator,
+Each input goes through a step attenuator, is clamped by a neon bulb,  and then is fed to the grid of a cathode follower made with a [[7586]] Nuvistor tube.
-is clamped by a neon bulb,
-and then is fed to the grid of a cathode follower
-made with a [[7586]] Nuvistor tube.
 Next, the signal goes to a PNP differential amplifier.
-Diodes in series with the collector signal
+Diodes in series with the collector signal of this differential amplifier are used for input channel switching.
-of this differential amplifier are used for input channel switching.
+An internal differential signal bus connects the switched outputs of each of the input channels and feeds the signal to the output amplifier,
-An internal differential signal bus connects
-the switched outputs of each of the input channels
-and feeds the signal to the output amplifier,
 which drives pins 1 and 3 of the [[500-series plug-in connector]].
-The output amplifier is two [[12AU6]] pentodes
+The output amplifier is two [[12AU6]] pentodes connected as a differential amplifier,
-connected as a differential amplifier,
+followed by a [[12AT7]] dual triode acting as a cathode follower to drive the output with a relatively low impedance.
-followed by a [[12AT7]] dual triode acting
-as a cathode follower to drive the output
-with a relatively low impedance.
 ==Pictures ==
 <gallery>
-Type_m_front.jpg|Late Type M Front view.
+Type_m_front.jpg|Late Type M Front view
-Type_m_left.jpg|Late Type M Left view.
+Type_m_left.jpg|Late Type M Left view
 Type_m_right.jpg|Late Type M Right view
 Tek_early_m_front.jpg|Early Type M Front
@@ Line 64: / Line 54: @@
 Tek m 501 6.jpg
 Tek m mod210d.jpg|Type M Mod 210D
-Type m chan switching low sn.png|Channel Switching Schematic, sn 824 and below
+Type m chan switching low sn.png|Channel Switching Schematic, SN 824 and below
-Type m chan switching sn 825-up.png|Channel Switching Schematic, sn 825 and above
+Type m chan switching sn 825-up.png|Channel Switching Schematic, SN 825 and above
-Type m 4 chan switched amp low sn.png|Four Channel Switched Amplifier Schematic, sn 2759 and below
+Type m 4 chan switched amp low sn.png|Four Channel Switched Amplifier Schematic, SN 2759 and below
-Type m 4 chan switched amp sn 2760-up.png|Four Channel Switched Amplifier Schematic, sn 2760 and above
+Type m 4 chan switched amp sn 2760-up.png|Four Channel Switched Amplifier Schematic, SN 2760 and above
 tek_type_m_in_556.jpg|Type M in [[556]]
 </gallery>
+==Components==
+{{Parts|M}}
 [[Category:500 series plugins]]