Tektronix 494AP service manual O a o o a, 0316, 316 684, 68a 684 368

Theoryof Operation- 494A1494ApServlce,Vot. 1

Table7-5

	PROGRESSIONOF GAINREDUCTION
Input	Point		Point	Point	Poinl
Level	1		2	3	4
		BeyondLoggingRange
x - 10 dB	0.00316		0.01	0.316	0.1
X Level	0.01		0.316		- - 0'216
				0 . 1	0.316
X + 1 0d B	0.0316		0.1	0.316
X+20 dB	0.1		0.316	1-0.684-1
				1 . 0	1 . €
x+30 dB	0.316		r-0.684	1- 0.684-_-1
		___r	1 . 0	1.684
	l_		=__1	1_	0.684
x+40 dB		0.68a	1_ 0.684
	1.0		1.684	2.368
X+50 dB	3 . 16	BeyondLoggingRange

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ENDOF AMPLIFIERDYNAMICRANGE

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Figure 7-10. Curve showing end-ol-range for a log amplifier.

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Figure 7-9.Log amplifaergain curye rhowlng break polnts.

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