81: Difference between revisions

Revision as of 04:01, 28 October 2018

Template:Plugin Sidebar 2 The Tektronix Type 81 is a plug-in adapter so that letter-series and 1-series plug-ins can be used in 580-series scopes.

The 81 and 81A are significantly different. Type 81 is tube-based and has a bandwidth of 33 MHz. Type 81A is solid-state and has a bandwidth of 50 MHz.

Specifications

please add

Internals

The Type 81 contains a two-stage amplifier. The letter-series plug-in drives the input stage of the Type 81 which is high impedance (grids of a 6GM8 stage with T-coil peaking) so that the plug-in sees conditions similar to the input of a 530-, 540-, or 550-series scope. The second stage is a 6DJ8 cathode-follower, which drives the 580-series scope's 93 Ω input impedance.

Pictures

Type 81

Type 81 with a 1A2 in a Netherlands-made 585A
Type 81 with a 1A2 in a Netherlands-made 585A
Type 81 Schematic
Type 81
Type 81
Type 81
Type 81
Type 81
Type 81
Type 81
Type 81

Type 81A

Type 81A
Type 81A
Type 81A
Type 81A
Type 81A
Type 81A
Type 81A
Type 81A Schematic

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 The '''Tektronix Type 81''' is a plug-in adapter so that [[letter-series and 1-series plug-ins]] can be used in [[580-series scopes]].
-The Type 81 contains a two-stage amplifier.  The letter-series plug-in drives
-the input stage of the Type 81 which is a high impedance, similar to the input
-of a 530-, 540-, or 550-series scope.  The second stage of the Type 81 is a
-cathode-follower, which drives the 580-series scope using a low impedance, as
-is required by 580-series scopes.
 The 81 and 81A are significantly different.
@@ Line 27: / Line 21: @@
 ==Specifications==
 [[Category:Specifications needed]] ''please add''
+==Internals ==
+The Type 81 contains a two-stage amplifier.  The letter-series plug-in drives
+the input stage of the Type 81 which is high impedance (grids of a [[6GM8]] stage with [[T-coil peaking]])
+so that the plug-in sees conditions similar to the input of a 530-, 540-, or 550-series scope.
+The second stage is a [[6DJ8]] cathode-follower, which drives the 580-series scope's 93 Ω input impedance.
 ==Pictures==