Hi Rod,
I am responsible for the NSLS design. Both
designs are based on a TI charge integrator chip. THe NSLS one
uses the DDC114, which is a 4-channel chip and the APS one is
based on the DDC112, I believe, which is a 2-channel chip.
I can give you the designs for the NSLS one. It
uses a PIC microcontroller to implement an ASCII interface
over TCPIP, does DHCP and up to 16 units can coexist on a
subnet. It is a small enclosure, 6" x 3.5" x 2".
The device has a maximum range of 0.8uA, but is
capable of measuring pA.
Pete.
On 10/21/2016 09:58 AM, Rod
Nussbaumer wrote:
Hi
all.
I've just started reading Mark Rivers' documentation for the
quadEM device support package. In there, he mentions that there
is support for two devices that are products of accelerator
labs:
The NSLS Quad Electrometer (called
NSLS_EM in this document). This
device consists of a 4-channel digital electrometer unit with
Ethernet
communication. The device provides 4-channel current
measurements at
up to 2500 Hz.
The Quad Electrometer built by Steve
Ross from the APS (called APS_EM
in this document). This device consists of a 4-channel digital
electrometer
unit and 2 VME boards. The device provides 2 readings per
diode at
up to 813 Hz.
Can anyone tell me whether those devices are available in any
form? Open hardware design, outright purchase, evaluation loan,
etc? If anyone knows a contact person regarding either one, that
would be
great to know.
Thanks.
Rod Nussbaumer
TRIUMF,
Vancouver, Canada
--
D. Peter Siddons
Detector Development Group Leader
Bldg. 535B
Photon Sciences Directorate,
Brookhaven National Laboratory
Upton, NY 11973
email: [email protected]
Phone: (631) 344-2738
