HP 8568B 3.Preliminary Display Adjustments (SN 3001A and Below), Adapters:, (2 required), AlAl Keyboard, Adapter, BNC(f), Adapter, BNC tee, AlA Z-AxisAmplifier

3.Preliminary Display Adjustments (SN 3001A and Below)

Reference

Note

Note

3. Preliminary Display Adjustments (SN 3001A and Below)AlAl Keyboard

AlA Z-Axis Amplifier

A1 A4 X-Deflection AmplifierAlA Y-Deflection Amplifier

Adjustment 2, “High-Voltage Adjustment,” should be performed before performing the following adjustment procedure.

Perform this adjustment only if components have been replaced on the AlA Z-Axis Amplifier, AlA X-Deflection Amplifier, or AlA Y Deflection Amplifier Assemblies. Components AlA2R22 HF GAIN, AlABClO, AlA4R28 HF GAIN, AlA4Cl0, AlA4Cl1, AlA5R28 HF GAIN, AlA5Cl0, and AlA5Cll are factory adjusted and normally do not require readjustment.

Description	The Al Display Section is adjusted to compensate the CRT drive
	circuits for proper horizontal and vertical characteristics. These
	preliminary adjustments are necessary only when a major repair has
	been performed in the display section (for example, replacement or
	repair of the AlA Z Axis Amplifier, AlA X-Deflection Amplifier, or
	AlA Y-Deflection Amplifier assemblies). For routine maintenance,
	CRT replacement, or minor repairs, only adjustment procedure 4,
	“Final Display Adjustments,” needs to be performed.
Caution
	Be sure not to allow a high intensity spot to remain on the spectrum
	analyzer CRT. A fixed spot of high intensity may permanently damage
	the CRT’s phosphor coating. Monitor the CRT closely during the
	following adjustment procedures. If a spot occurs, move it off-screen
	by adjusting either the front-panel INTENSITY control, or the
	horizontal or vertical deflection position controls.

Equipment Digitizing Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 54501A Pulse/Function Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8116A 1O:l Divider Probe, 10 MW7.5 pF (2 required) . . . . . . . . . . . HP 10432A Display Adjustment PC Board (setice accessory] . . . . . . .85662-60088 Termination, BNC 500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 11593A

Adapters:
Adapter, BNC tee . . .	. . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . .1250-0781
Adapter, BNC(f)	to	SMB(f) . . . . . . . . . . . . . . . . . . . . .	1250-1236

Adjustments 3-45