SRS Labs SR850 manual Gain and Time Constant Menu, Reserve

Gain and Time Constant Menu

Reserve	This key selects either maximum, minimum or manual dynamic reserve.
	When the reserve is maximum, the SR850 automatically selects the max-
	imum reserve available at the present full scale sensitivity. When the
	reserve is minimum, the minimum available reserve is selected. The
	dynamic reserve is displayed in the settings display at the top of the
	screen (if selected in the DISPLAY/SCALE menu).
	When the reserve is manual, the reserve is set by the user to a value
	between the min and max reserve. The reserve is set in 10 dB
	increments.
	Changing the sensitivity may change the reserve. With max or min
	reserve, the max or min reserve of the new sensitivity is used. With
	manual reserve, the reserve is kept the same relative to the mini-
	mum reserve. For example, if the sensivity is 10 mV and the reserve is
	21 dB (20 dB above the minimum for this sensivity), changing the sensiv-
	ity to 5 mV will change the reserve to 27 dB (20 dB above the 7 dB mini-
	mum). If the new sensivity does not have a reserve high enough to satis-
	fy this rule, then the max sensitivity will be used instead.
	The minimum and maximum reserve limits for each sensitivity are listed
	below.
	Sensitivity	Min Reserve (dB)	Max Reserve (dB)
	1 V	0	0
	500 mV	6	6
	200 mV	4	14
	100 mV	0	20
	50 mV	6	26
	20 mV	4	34
	10 mV	0	40
	5 mV	6	46
	2 mV	4	54
	1 mV	10	60
	500 µV	16	66
	200 µV	24	74
	100 µV	30	80
	50 µV	36	86
	20 µV	44	94
	10 µV	50	100
	5 µV	56	106
	2 µV	64	114
	1 µV	70	120
	500 nV	76	126
	200 nV	84	134
	100 nV	90	140
	50 nV	96	146
	20 nV	104	154
	10 nV	110	160
	5 nV	116	166
	2 nV	124	174
	Do not use ultra high dynamic reserves above 120 dB unless absolutely
	necessary. It will be very	likely that the noise	floor of any interfering

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