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Manuals – Specifications – Links – Pictures
The Tektronix R7903 is a rackmount version of the 7903, a 3-slot 7904 that takes only one horizontal plug-in. Otherwise, aside from being rackmount shape, it the same as a 7904.
|Fastest calibrated sweep||500 ps/Div (with 7B92A, other time bases "uncalibrated for first 60 ns")|
|Acceleration voltage||24 kV|
Early R7903 (SN B159999 and earlier) have issues with horizontal aberrations for sweep rates of 1 ns/Div or faster. After discovery of the issue modification kits (040-0801-00) that replace the horizontal amplifier were offered. For more information see the manual of the 067-0657-00 Normalized Ramp Generator that was use to investigate this issue.
CRTs used in the R7903
|Page||Part nos||Description||Designers||Used in|
|154-0644-00||154-0644-00 • 154-0644-04 • 154-0644-05 • 154-0644-09||CRT with distributed deflection plates||Ken Hawken||7704A • 7854 • 7904 • 7904A • R7903|
Custom ICs used in the R7903