HP 8568B Name, Number, Reference, Adjustment, Adjustment, Designator, Adjustment Function, IF Serial Prefix 3001A and Below

‘lhble 3-2. Adjustable Components (continued)

Reference	Adjustment	Adjustment			Adjustment Function
Designator	Name	Number
AllA5Cl	IMPEDANCE	16	Optimizes		sampler		output.
	MATCH
Al lA5C2	IMPEDANCE	16	Optimizes		sampler		output.
	MATCH
Al lA5Rl	IF GAIN	13	Adjusts level of 30 MHz output.
A16R62	OFFSET	13	Adjusts	scan ramp			offset.
A16R67	SWEEPTIME	13	Adjusts time of sweep ramp.
A16R68	AUX	13	Adjusts AUX OUT sweep ramp.
A16R71	GAIN 2	13	Adjusts frequency span accuracy (YTO sweep).
A16R72	GAIN 1	13	Adjusts frequency span accuracy (YTO sweep).
A17R50	+2OV ADJ	1	Adjusts +20 V de supply voltage.
A19R9	-12.6 VR	13	Adjusts -12.6 V reference for YTO dAC high end
			(6.2 GHz).
A19R19	OFFSET	13	Adjusts	summing amplifier offset.
A19R32	2.5 GHz SPAN	13	Adjusts	5.8 GHz		switchpoint overlap.
A19R41	25 GHz SPAN	13	Adjusts 25 GHz			span offset.
	OFFSET
A19R43	25 GHz SPAN	13	Adjusts	5.8 and		12.5 GHz switchpoint overlaps.
A19R50	+lOVR	13	Adjusts HOV reference for YTO DAC low end (2
			GHz).
A19R56	2.5 GHz SPAN	13	Adjusts 2.5 GHz			span offset.
	OFFSET
A20R25	6.15 GHz	13	Sets high-end frequency of YTO.
A20R34	2.3 GHz	13	Sets low-end frequency YTO.
A22A2	FREQ ADJ	12	Adjusts	reference			oscillator frequency.
	For Serial Prefix 2737A and below, see back of table for A22
	exceptions.
IF Serial Prefix 3001A and Below
AlABClO	Cl0	3	Adjusts rise and fall times of Z axis amplifier pulse.
AlA2R5	INTENSITY	3	Sets adjustment range of front-panel INTENSITY
			control.
	GAIN
AlA2R22	HF GAIN	3	Adjusts rise and fall times of Z axis amplifier pulse.
AlA2R30	FOCUS GAIN	3	Coarse adjusts CRT focus; sets range of front-panel
			FOCUS control.

Adjustments 3-11