7934: Difference between revisions

title=Tektronix 7934|

summary=500 MHz non-storage mainframe|

* [http://bama.edebris.com/download/tek/7934/tek-7934.pdf Tektronix 7934 Manual (PDF)]

 

Amplifiers are normally installed in the two vertical bays to provide vertical beam deflection, and time-bases in the two horizontal bays to provide horizontal beam deflection.   

 

Amplifiers may be installed in horizontal slots for X-Y operation, and time-bases in vertical slots to provide a raster display.   

 

Two-bay modules are typically installed in the middle two bays, which enables them to provide both vertical and horizontal deflection of the beam, while three-bay modules are typically installed in the three left-most bays  

The 7934 makes extensive use of custom integrated circuits and hybrid circuits.  With the exception of the on-screen readout circuit, the signal path is completely differential and all of the internal wiring is 50-ohm coax.  

Both horizontal compartments are triggerable from either ''vertical'' compartment, through an internal signal path.  Amplifier plug-ins with two channels provide a switch to select which channel will be given to the mainframe for routing to the triggers.   

The horizontal modes (A/B/alt/chop) allow the horizontal deflection to be controlled by either the A or B compartment only, or by both, on a time-sharing basis.  The mainframe also provides hold-off signals between the two horizontal, which allows a delaying time-base in the A compartment to trigger a delayed time-base in the B compartment.  Both the delaying and delayed timebases can be displayed on the screen at once by selecting the chop horizontal mode.

Connectors on the rear of the mainframe provide a sample of either the A or B compartment's output as well as either compartment's internal trigger signal.  Only one connector is available for each function, and the compartment is selected by jumpers on a circuit board near the rear of the case.

==Links==