AudioQuest M-27 specifications Switch Positions

Switch Positions

Switch 1 and 2 select the M-27 functions.

Switch 1 and 2 are read only on RESET and when the battery is replaced.

Switch 3 selects printer options.

Switch 3 is read at the start of each printout and may be changed without destroying data.
SWITCH 1
Position 1	On = "C" weighting			Off = "A"
Position 2	On = 30 dB Range			Off = 50 dB Range
Position 3 In 30 dB Range
In 50 dB RangeOn = 115 dB U.L.				Off = 90 dB U.L.
	On = 140 dB U.L.			Off = 115 dB U.L.
Position 4	On = Fast			Off = Slow
Positions	5	6	Criterion Level
	Off	Off	=80 dB
	Off	On	=84 dB
	On	Off	=85 dB
	On	On	=90 dB

Positions	7	8	Exchange Rate
	Off	Off	= 3 dB
	Off	On	= 4 dB
	On	Off	= 5 dB
	On	On	= 6 dB
SWITCH 2
Positions	1		2	3	4	HTL
Off			Off	Off	Off	= 70
Off			Off	Off	On	- 70
Off			Off	On	Off	= 75
Off			Off	On	On	= 80
Off			On	Off	Off	= 85
Off			On	Off	On	= 90
Off			On	On	Off	- 75
Off			On	On	On	= 80
On			Off	Off	Off	= 85
On			Off	Off	On	= 90
On			Off	On	Off	= 80
On			Off	On	On	= 85
On			On	Off	Off	= 90
On			On	Off	On	= 85
On			On	On	Off	= 90
On			On	On	On	= 90
Position 5	On =		24 hour			Off
Position	6		7	8	Unit
Off			Off	Off	= 0
Off			Off	On	= 1
Off			On	Off	= 2
Off			On	On	= 3
On			Off	Off	= 4
On			Off	On	= 5
On			On	Off	= 6
On			On	On	= 7
SWITCH 3
Position 1	On = Busy			Off = Data Set Ready
					handshake
Position 2 On = Parallel printer				Off = Serial printer

Normally positions 1 and 2 are set the same.

	LTL
dB	none
dB	none
dB	none
dB	none
dB	none
dB	none
dB	70 dB
dB	70 dB
dB	70 dB
dB	70dB
dB	75 dB
dB	75 dB
dB	75 dB
dB	80 dB
dB	80 dB
dB	85 dB
= 12	hour