Transcript Status of the LAV electronics

OUTLINE
 Status of the FEE boards for the LAV
 Tools for testing
 The LAV to TDC cables
 Analog cables
 Status of the LAV electronics massive production
The LAV 9U FEE board
1
2
4
3
4
3
Supply
voltage
±12V reduced to
±7.5V by onboard
voltage regulators
LAV boards connections
Boards Inputs
Type
Outputs
Type
Power ±12V
VME J1
64 LVDS output
32 analog signals
2xDB37
8 analog sums of 4 ch
8xLEMO-00
2 analog sum of 16 ch
2xLEMO-00
1 CAN OPEN
RJ11
1 CAN open
2xSCSI2
RJ11
9U Boards components
# of pieces
±7.5 V voltage regulator
2
Time over threshold Mezzanine (2ch)
16
Sum of 4 mezzanines (8 sum 4 + 2 sum 16)
10
Board controller
1
Test pulse signal generator
1
Test tools
Allows to access ToT mezzanine top and bottom
Can control the value of the 4 thr using trimmers
Access to analog and digital mezzanine outputs
Set using trimmers a common
value for the high and low
thresholds on all the board
channels
Allows to operate the boards
without the CPU firmware
Connection to TDC
LAV FEE side
SCSI II
TDCb side
VHDCI
VHDCI to SCSI II 1.5m halogen free cable
Non standard pin to pin assignment!
Produced by Technical Cable Concepts
Price 85$ per piece
All basic tests are up to now satisfactory
Warning:
Don’t use any other cable with the
LAV FEE and TDCb.
The pin assignment will be
wrong!!
Warning:
If you plan to produce patch
panels ask for pin assignment
firts!!
ANTI-A12 analog cable test
Due to non halogen free cable used inside
the construction of the ANTI-A1-A11
A new cable type is needed for A12
Reflected Signal Amplitude = +80mV
Direct Signal Amplitude = -1.252V
Cable Impedance Z0 = 44 Ohm
Firm already asked for a new cable
production
Flange to FEE cable
16 conductors coaxial 50W halogen
free cable asked
Reflected Signal Amplitude = +104mV
Direct Signal Amplitude = -1.272 V
Cable Impedance Z0 = 42.5 Ohm
Firm already asked for a new cable
production
Test of the FEE boards at ±7V
The LAV FEE can be operated at ±7V instead of the ±12V, removing the
regulators and reprogramming the LAV crate to provide ±7V.
This option allow us to save power and to avoid producing regulators
Diode protection patch has been developed to
substitute the voltage regulators on the board
The boards has been successfully operated in the
reprogrammed crate at ±7V
The current drained by the FEE boards is reduced
form 1A to 0.85A with a ~15% power reduction
There is no need for main power voltage regulators
on board the LAV FEE !
Still have linear regulator on each of the mezzanine to
have precise voltage supply
Validation and production status
 ToT mezzanine:
•
•
•
Fully validated during laboratory tests
100 pcs already tested
1600 pcs already in production
•
•
Validated after minor corrections on 30 prototypes
Production of all 1000 pcs will start before the end of the 2011
•
•
•
5 pcs already produced 3 of which tested and fully equipped
Minor issue identified in the mechanics
Test still ongoing on pulser and CPU sections
•
•
5 CPU and 5 pulse controller prototypes produced
Functionality still under test
Sums mezzanine:
VME 9U mother boards
CPU and pulse controller mezzanine:
LAV planning for the 2012 runs
Equip 3 full LAV station (ANTI-A1 ANTI-A2 ANTI-A3)
•
•
15 LAV FEE boards fully equipped (240 ToT mezzanine)
If CPU mezzanine shows no problems
•
Can have a alpha release firmware for march or april 2012
 TELL1 or TEL62 Firmware:
•
•
Basic firmware for data correction (time only)
Basic firmware for the L0, just like a OR(160 in)
Conclusions
The massive production of LAV FEE has been started
•
ToT and sum mezzanine already in production
LAV crates are ok
•
We shall decide the “Standard” voltage settings ±12V or ±7V
2012 run and production status
•
We are at the moment confident to have 3 fully equipped LAV for
the 2012 test run.