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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]].   
Early versions had [[Connectors#UHF|UHF connectors]] for the inputs.   
Early versions had [[UHF connector]]s for the inputs.   
Later versions have [[Connectors#BNC|BNC connectors]] for the inputs.   
Later versions have [[BNC connector]]s for the inputs.   
 
Type M was [[introduced in 1962]], along with the Type [[O]], and dropped after 1971 or 1972.
 
{{MissingSpecs}}
 
The risetime is 17 nanoseconds, bandwidth is DC to 20 MHz.
The risetime is 17 nanoseconds, bandwidth is DC to 20 MHz.
Maximum sensitivity is 20 mV/div.
Maximum sensitivity is 20 mV/div.
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operate in CHOP or ALT mode.
operate in CHOP or ALT mode.


==Internals==
Each input goes through a step attenuator,  
Each input goes through a step attenuator,  
is clamped by a neon bulb,  
is clamped by a neon bulb,  
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as a cathode follower to drive the output  
as a cathode follower to drive the output  
with a relatively low impedance.
with a relatively low impedance.
Type M was [[introduced in 1962]],
along with the Type [[O]],
and dropped after 1971 or 1972.


==Pictures ==
==Pictures ==


<gallery>
<gallery>
Image:Type_m_front.jpg|Late Type M Front view.
File:Type_m_front.jpg|Late Type M Front view.
Image:Type_m_left.jpg|Late Type M Left view.
File:Type_m_left.jpg|Late Type M Left view.
Image:Type_m_right.jpg|Late Type M Right view
File:Type_m_right.jpg|Late Type M Right view
File:Tek_early_m_front.jpg|Early Type M Front
File:Tek_early_m_front.jpg|Early Type M Front
File:Tek early m left.jpg|Early Type M Left
File:Tek early m left.jpg|Early Type M Left
File:Tek early m right.jpg|Early Type M Right
File:Tek early m right.jpg|Early Type M Right
</gallery>
</gallery>
[[Category:500 series plugins]]