11.2.2 1
ST
D
ECEMBER
2006 – R
EV
2.3
TO
R
EV
2.3
A
☑
Dual channel to Quad-Channel (Software change on the internal board, update on older
systems only on request – shipment to producer necessary) -- software on request for PCI-
board lockins
11.2.3 14
TH
A
PRIL
2007 – R
EV
. 2.3
A
TO
R
EV
2.4
☑
Change of input noise (Page 4) – due to an improved board design, the typical noise has
reduced to:
Range
Guaranteed noise
Typical noise
10 V
< 350 nV
280 nV
1 V
< 80 nV
50 nV
0.1 V
< 8 nV
5 nV
☑
Change
of
input
range
(Page
4)
–
The visible input ranges (dynamic reserve) in the AMU2.4-software are “high”, “normal” and
“low”. Since revision 2.4, the hardware spec meets exactly these values and has changed to
±
5V,
± 500 mV and ± 50 mV, respectively.
☑
Change
of
input
impedance
(Page
4)
–
In order to achieve a better coupling compensation, the input coupling has changed from '100
kOhm' to '100 kOhm || 20 pF'.
11.2.4 10
TH
A
PRIL
2008 – R
EV
2.4
☑
The boards provide an on-board hardware scaling. Therefore, no software file for the scaling is
needed anymore.
11.3 S
OFTWARE
R
EVISIONS
11.3.1 10
TH
A
PRIL
2008 – V
ERSION
1.02
☑
The whole software package has been reworked concerning the handling of the hardware
scaling. When a program is first called and the PCI-card is capable of on-board hardware
scaling, the scaling is read from the EPROM and transferred to the Windows Registry. Multiple
cards in one PC get different entries. When the card does not contain on-board scaling, the
'lockin.ini' is searched and its parameters are transferred to the Registry. Later on, all programs
work with the Registry Entries.
☑
Overload function implemented in the DLL.
11.3.2 11
TH
M
AY
2009 – V
ERSION
1.04
☑
Add the SetLockInParameter call when the Inout Gains are switched, in order to overtake the
phase correction settings for the different gains.
11.3.3 11
TH
J
ULY
2009 – V
ERSION
1.05
☑
Add the function “SetLockInCoupling” in the DLL. Correct the bug “PLL On”: the functions
“SetLockInPhase,”, “SetLockInHarm”, “SetLockInFreq” and “SetLockInAmpl” do not overwrite the
PLL setting anymore.
Manual Anfatec PCI-Lockin Amplifier AMU2.4 – Rev. 1.10 dated 30/09/20
Page 65 (70)
