551: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
The 551 is a 27MHz [[dual-beam scopes|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. The trigger and sweep circuitry are built in to the mainframe. Like the 555, the 551 uses and external power supply unit. The external power supplies of the 555 and 551 are not interchangeable. The manual is on BAMA. | The Tektronix Type 551, [[introduced in 1960]], | ||
is a 27MHz [[dual-beam scopes|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. | |||
The trigger and sweep circuitry are built in to the mainframe. | |||
Like the 555, the 551 uses and external power supply unit. | |||
The external power supplies of the 555 and 551 are not interchangeable. | |||
The manual is on BAMA. | |||
A factory modification, MOD 108A, was available for increasing the CRT acceleration voltage. This improved trace visibility at high sweep rates. | A factory modification, MOD 108A, was available for increasing the CRT acceleration voltage. This improved trace visibility at high sweep rates. | ||
| Line 8: | Line 15: | ||
Image:551_rightint.jpg|Right side. | Image:551_rightint.jpg|Right side. | ||
Image:551_top.jpg|Top view. | Image:551_top.jpg|Top view. | ||
Image:551 block.gif|Block diagram | |||
</gallery> | </gallery> | ||