Last night, I was getting ready to run a measurement for Vincent, but before running I happened to check channels and noticed some channels were zero at their inputs.  I went to do a quick check of cable connections, and they looked connected at the Feedthru Interface.  Not knowing what else to try, I killed/rebooted/started the isi system:  everything came back including the zeroed channels. 

I've not seen this issue before.  Any ideas on what's wrong (I'm attaching a snapshot of the sensors as they were on DV).  Now I only looked at these sensors, and nothing else, so not sure if other channels have zeroes at their inputs.

Sidenote:  I tried killing scripts from the "isiham GDS CUST" medm window from the workstation in the Tech Lab, but it didn't work.  The medm screen didn't go WHITE, and my mouse eventually became froze within an medm screen (I wasn't able to do anything on this machine...so I had to power it off via the power button).

The 2TB disk drives for the SataBoy raids were delivered
today. I installed the disks into the H2 DAQ system and
started a RAID6 install with one spare drive. Its looking
like the build will take about 40 hours.

The system has 14 disk slots, we have 12 2TB drives and 2
SSD 64GB drives. The SSDs are configured as a mirror raid
of size 64GB.

The 12 2TB drives are mounted as a RAID6 (9+2) plus a single
hot spare. This will give an 18TB disk system when it is built.

Looking at the epics records, it appears the new system only adds
new records and does not change/delete any existing records. This
means burt restores of old backups will still work.

A new autoBurt.req was generated, so from now onwards the new channels
will also be backed up.

The old system had 1780 chans, the new has 3245 chans (addition of 1465 chans)

The new system as added the following filter modules:

< L1:QTS-Q1_M0_PITCH_TEST_GAIN
< L1:QTS-Q1_M0_ROLL_TEST_GAIN
< L1:QTS-Q1_M0_X_TEST_GAIN
< L1:QTS-Q1_M0_YAW_TEST_GAIN
< L1:QTS-Q1_M0_Y_TEST_GAIN
< L1:QTS-Q1_M0_Z_TEST_GAIN
< L1:QTS-Q1_R0_PITCH_TEST_GAIN
< L1:QTS-Q1_R0_ROLL_TEST_GAIN
< L1:QTS-Q1_R0_X_TEST_GAIN
< L1:QTS-Q1_R0_YAW_TEST_GAIN
< L1:QTS-Q1_R0_Y_TEST_GAIN
< L1:QTS-Q1_R0_Z_TEST_GAIN

which accounts for most of the new channels.

Mark requested that I get the latest qts.mdl file from the LLO
quad test stand and compile it at LHO. I saved the current 
file as archive/qts.mdl.3nov2008 (this is the date it was created)
and copied the LLO file as qts.mdl (this file was created 4oct2009).

I did the standard make qts, make install-qts, make install-daq-qts
and make install-screens-qts with no problems.

I then copied the medm files up from LLO. So everything in
/cvs/cds/llo/medm/l1/qts is a copy (orig saved as l1/qts_lho)

The new overview screen is working, and the DOF buttons open sub-screens
(see attached image)

This time with filtering off.  There appears to be some stiffness in the cabling which is likely causing the PITCH and Z Tf's to be a little funky looking.

I have attached a sum up of the isolation filters installation on HAM-ISI-LHO-Unit2.

Andres R. and I completed assembly of the first two Beam Splitter Upper Table Cloth subassemblies this afternoon. No manufacturing or design problems were encountered, (all parts fit together and all holes were of the correct size and in the right place). 

Assembly Notes: 
(1). The ECD Blocks are still a bit tight fitting in the mounting bracket. Alcohol and rocking the ECD Block helps it slide into place. When adjusting with the jacking screws, take care to keep the ECD block parallel to the face of the mounting bracket or it will jam. 
(2). Adjust the side plates to their full width to allow the installation of the Top Mass into the Table Cloth assembly. 
(3). Run the four bottom 1/4-20 Helicoils used to fasten the front and back plates to the side plates in from the bottom of the side plate to their full depth. The 1/4-20x1 SHCS used to bolt the plates together will not reach the Helicoil, if they are not installed to full depth.            

On Friday 20 Aug we started an N2 purge of the Transport container in which resides the HAM ISI assembly #1.  The N2 flowed at ~30 l/min for about 6hours.  We dropped the flow to a few l/min for the weekend and then ramped it back to about 10 l/min for the remainder of the week.  Attached is the trend of the temp/dew point/humidity of the exhaust.  Purge was stopped Friday afternoon 27 August.

I will be updating the aLog today at 10:30am Pacific.

Please save your entries to drafts or post them before this time.

The updates will allow the following:

 * Tighter integration of the aLOG and the LIGO.ORG authentication method. This is a permanent fix to the problem where the author name would disappear.  Your sessions will time out eventually.  Work in progress will be saved to a draft, so you will not loose any data.

 * The thumbnails will display with the correct aspect ratio

 * Preliminary support is included to allow a user to edit their entry for 24hrs.

In /opt/rtcds/geo/g1/medm/isiham/G1ISI_HAM_BLEND_ALL.adl, changed files loaded for filters from G1ISI_HAM_BLEND_*.adl to G1ISIHAM_HAM_BLEND_*.adl so the filter medm screens would be called when buttons were clicked on the _ALL screen.  

There is some confusion here as to naming... G1ISI_HAM vs. G1ISIHAM_HAM, medm/isiham vs. medm/g1isiham, and so on.  Also, G1ISI_HAM_BLEND_GEOX.adl was called when it should have been ...GEOY.adl according to the label on the button.

I didn't bother making a custom screen for this because the naming of directories and files needs to get resolved.  This was to support Vincent in loading coefficients for filters for a test.

We are working on the implementation of the isolation loops. What we did to start:

- we use the normalization filters from HAM6. The first page shows the normalized displacement and GS13. The GS13 will have to be tweaked a little bit.
- we use the 1Hz blend filters from HAM6.
- the un-damped super-sensor using these raw filters is shown on page 3.

What's next:
- we tweak the GS13 normalization
- we are going to take damped data over the week end
- we built the damped super-sensor
- we design and implement the isolation filter

A photo is worth a 1.0e+03 words.

X1DAQ DTS and H2 DAQ system install and test on LHO DTS test stand.

Rolf and Alex, August 18-27 2010.

Rolf gave a summary of the work which is minuted

here

executive summary:

9 new 2U diskless front end machines were installed. A new boot and NFS
server was installed. The front ends were loaded up with models to
approximate roughly 50% of an IFO. Data rates between the front ends and
the H2 DAQ were tested.

EX and EY systems were simulated. IOP comms was performed using 5565 RFM
NIC and switching equipment.

Dolphin and RFM IOP used to distribute timing to the front ends which did not
have an IO Chassis attached.

EDCU channel limit was found to still be evident, Alex to work on removing this
limit. The system as built has 48,000 epics channels, in line with the 
100,000 per ifo estimate.

awgtpman found to take many cpu cycles, needs to refinement.

dtt and dataviewer need some work to get them operational.

Attached are PDFs of the 3 of the DOF TFs of the first QUAD.