Subject: Noise directory
From: Bill Forrest <[email-masked]>
To: [email-masked]
Cc: Rob Simcoe <[email-masked]>, Craig McMurtry <[email-masked]>, Bill Forrest <[email-masked]>
Date: Thu, 27 Aug 2009 17:13:53 -0400

Hi Rob,

Using 3.5 e-/ADU at gx4 and 1.24 e-/ADU at gx11.3, here is the full sequence of
CDS measurements all with Vref1 = 1.75 V on V3, InPcommon on V1, VrefMain on V4.
http://astro.pas.rochester.edu/~forrest/SidecarASIC

time	gain	VrefMai	ADU	p-p ADU	RMS e-
----	----	-----	---	----	-----
	Detector noise, V2 connected to InPadP
113534	4	1.44		15	10.5
	System noise, InPCommon on V2
141803	11.3	1.70	railed at 65,536 ADU, no good
142032	4	1.70	33,000	12	8
142841	4	1.75	1000, too low, too close to zero
142953	11.3	1.75	1000, too low, too close to zero
143232	11.3	1.725	35,000	15	4	wow! really low system noise!
	Detector noise, V2 back to InPadP
144444	11.3	1.44	26,000	36	9	
This is considerably lower than Craig's 17 e-, ???
	Connect pump electrically and mechanically
150604	11.3	1.44	28,000	250	63	large pump noise
	Connect pump mechanically but not electrically
150938	11.3	1.44		<50		noise from electrical connection

Bill