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1A4: Difference between revisions
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The '''Tektronix Type 1A4''' is a 1-series vertical plug-in for [[Main_Page#500_Series|500-series scopes]]. | The '''Tektronix Type 1A4''' is a 1-series vertical plug-in for [[Main_Page#500_Series|500-series scopes]]. | ||
It has four input channels and 50 MHz bandwidth. | It has four input channels and 50 MHz bandwidth. | ||
Type 1A4 was [[introduced in 1967]] and lasted until the end | |||
of the [[Main_Page#500_Series|500-series line]] in 1974. | |||
The four channels are grouped into two groups of two channels. | The four channels are grouped into two groups of two channels. | ||
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This allows high-speed and low-speed signals to be displayed together, | This allows high-speed and low-speed signals to be displayed together, | ||
similar to what a dual-beam scope can do, but without some of the cost and complexity. | similar to what a dual-beam scope can do, but without some of the cost and complexity. | ||
Like the Type [[1A2]] and unlike the Type [[1A1]], | |||
the Type 1A4 has a Trigger Output selector that controls | |||
which channel provides triggering when the mainframe trigger is in Plug-In mode. | |||
==Specifications== | |||
[[Category:Specifications needed]] ''please add'' | |||
Maximum channel sensitivity is 10 mV/div, | Maximum channel sensitivity is 10 mV/div, | ||
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for approximately 200 μV/div AC with about 20 Hz - 1 MHz bandwidth. | for approximately 200 μV/div AC with about 20 Hz - 1 MHz bandwidth. | ||
==Internals== | |||
The signal path of each channel of the 1A4 is as follows. | The signal path of each channel of the 1A4 is as follows. | ||
First the signal passes through the attenuators. | First the signal passes through the attenuators. | ||
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After the multiplexer network, the signal passes through a common base amplifier | After the multiplexer network, the signal passes through a common base amplifier | ||
followed by [[6DJ8]] tube operating in common grid configuration. | followed by [[6DJ8]] tube operating in common grid configuration. | ||
==Pictures== | ==Pictures== | ||