HP 8414A Operating And Service Manual page 76

Grid Supply. The grid supply consists of a
wave rectifier. Its output voltage is about
i0 Vdc with the CRT unblanked. With zero
3
input from the intensity modulator, the grid
>ly is referenced to ground; however, an input
ige from the intensity modulator becomes the
rence voltage for the grid supply. A change in
intensity modulator output voltage causes the
supply voltage to change, which changes the
"s grid to cathode bias and intensity modulates
beam.
A2TP22 60V P-P
A2TP23 60V P-P
B
A2TP9 2V P-P
VA/V
A2TP19 2V P-P
1
4 SIMPLIFIED BLOC