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5-120.
Character Generator
1.
Perform the Basic Alignment Procedure of para 5-105.
2.
Turn the R2001A off and extend the Scope/DVM Control Board using the 100 pin extender card.
3.
Turn the R2001A on and select the Monitor FM Function and the Gen/Mon Mtr Display.
4.
Adjust the Horizontal Character Sweep Width Potentiometer on the Scope/DVM Control Board
(Figure 5-20) so that the right-hand edge of the CRT character display is approximately 4.2 graticule
divisions to the right of the graticule center line.
VERTICAL
CHARACTER
WIDTH
Figure 5-20.
Scope/DVM Control Char Sweep and Sinad Alignment Points
5.
Adjust the Vertical Character Sweep Width Potentiometer on the Scope/ DVM Control Board {Figure 5-
20) so that the bottom edge of the CRT display is approximately
3.3
graticule divisions below the
graticule center line.
6.
Turn the system power off and reinstall the Scope/DVM Control Board into the R2001A.
5-121.
Sinad Notch Filter
1.
Turn the R2001 A off and extend the Scope/DVM Control Board using the 100 pin extender card.
2.
Turn the R2001 A on and select the Generate FM Function and the Gen/Mon Mtr Display.
3.
Set the Modulation Switch and the Ext. Level Control to their off positions. Set the BW Switch to the
Narrow position and adjust the 1 kHz Level Control for a 20kHz deviation reading on the CRT display.
4.
Connect the Mod Out Jack on the fron panel to the Vert/Sinad/DVM/Counter Input Jack on the front
panel.
5-30
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