551: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
Line 1: | Line 1: | ||
The Tektronix Type 551, [[introduced in | The Tektronix Type 551, [[introduced in 1958]], | ||
is a 27MHz [[dual-beam scopes|dual-beam scope]] that takes | is a 27MHz [[dual-beam scopes|dual-beam scope]] that takes | ||
two [[letter-series and 1-series plug-ins]]. | two [[letter-series and 1-series plug-ins]]. |
Revision as of 23:28, 16 December 2011
The Tektronix Type 551, introduced in 1958, is a 27MHz dual-beam scope that takes two letter-series and 1-series plug-ins. Unlike the 555, it has only one set of horizontal deflection plates and the trigger and sweep circuitry are built in to the mainframe. Like the 555, the 551 has an external power supply unit. The external power supplies of the 555 and 551 are not interchangeable. The vertical amplifiers of the 545A, 551, and 555 are identical.
A factory modification, MOD 108A, was available for increasing the CRT acceleration voltage. This improved trace visibility at high sweep rates.
551 | 555 | |
---|---|---|
Risetime with Type K | 14ns | 12ns |
Acceleration Voltage | 10kV | 10kV |
Price in 1965 | $1850 | $2650 |
Indicator Weight | 52 pounds | 68 pounds |
Power Supply Weight | 42 pounds | 45 pounds |
Power Consumption | 850 watts | 1050 watts |
-
Front view.
-
External power supply.
-
Left side.
-
Right side.
-
Top view.
-
Block diagram
-
Vertical amplifier
-
trigger schematic
-
block diagram