ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 1 I A S F Sez.Palermo ULTRA U v L ight T ransmission and R eflection in A tmosphere PDAQ of BABY Psome considerations on ULTRA telemetry PActivity also supported by Italian INFN. ULTRA

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 2 I A S F Sez.Palermo ULTRA BABY: block diagram 4 channels Integration Unit in NIM module 4 channels Count Unit in NIM module 8 channels Memory Unit w/ host interface (NIM) Head Unit: HV, controls and housekeeping(NIM) Host: Pentium(red. speed 75MHz w/o fan) + Pressurized H/Ds case

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 3 I A S F Sez.Palermo ULTRA 100 or 1000 pF set sensitivity to 10 or 1 mV/pC Sampling at 1MS/s constant rate (10MS/s w/ external clk) Offset suppression using a second Op.Amp 1 Q/C step represents the average V due to a single p.e. Charge Integrator Unit

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 4 I A S F Sez.Palermo ULTRA Bipolar threshold and polarity selection Sampling at 1MS/s constant rate (10MS/s w/ external clock) 1 count corresponds to 1 single p.e. over threshold 0.1 mV threshold step in ± 1 V range Single photon counting unit

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 5 I A S F Sez.Palermo ULTRA Input Data Mem Buffer Filter&Tag Data Processor Filtered&Tagged Data Mem Inter-units synchronization I/O port =128kW, 8MW/s r/w access =8 MW/s =64 kW, 8MW/s r/w access =Yes =Parallel std IEEE1284-EPP Memory unit features

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 6 I A S F Sez.Palermo ULTRA At the same time (change A and B each time window): –input A data stored in memory buffer A –old B data filtered & tagged in filtered&tagged buffer B –filtered & tagged memory buffer A read from PC Memory operational sequences

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 7 I A S F Sez.Palermo ULTRA UV scope block diagram

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 8 I A S F Sez.Palermo ULTRA Self consistent electronics for each channel (PC excluded) Both single photoelectron count and charge integration in the same module 10 ns double pulse discrimination 14 bit ADC 100 ns resolution time Pre-processing before storing data Re-programmable processing and control logic UV scope new features

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 9 I A S F Sez.Palermo ULTRA Telemetry : wireless network

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 10 I A S F Sez.Palermo ULTRA Telemetry needs Programming or changing parameters Monitoring station health Quick look of data Rough synchronization < 2kbytes/s per station of data traffic (rough estimation)

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 11 I A S F Sez.Palermo ULTRA Simple isofrequency Tx- and Rx-ceivers Low cost 19200bps-100kbps Extra electronics needed Legacy problems Unknown site frequency usage (interference possibility)

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 12 I A S F Sez.Palermo ULTRA Radio modems PC connection thru a standard RS232 interface Use of old fashioned Op. System (if needed) Power Supply Vdc Max baud available, limiting the whole data traffic to 2kbytes/s Legacy problems for higher frequency and power

ULTRA meeting: Turin th Jan 2002 Gino. IASF. PA. CNR. IT 13 I A S F Sez.Palermo ULTRA 11Mbps (up to 108) of network speed Web based management PCI boards, USB and PCMCIA modules Full remote control Windows like O.S.’s Legacy Wireless LAN