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FAST ComTec 7072T, Руководство пользователя

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Appendix

 - 

Performance

 characteristics

 ComTec GmbH

Appendix 4-3

LLD: .............................................................................................. 

+25 

mV

ULD: 

.............................................................................................. +9.95 V

Coinc/Anti-coincidence: ......................................................................................  

Coincidence

4.1.6.  Level adjustment ranges

TDC threshold: 

................................................  -1.0 V … -100 mV, in 1.22 mV steps

ADC threshold: 

...............................................  -100 mV … +1.0 V, in 1.22 mV steps

LLD: 

(ADC th < LLD 

≤

 ULD) ............. +20 mV … +10 V, in 4.88 mV steps

ULD: (ULD 

≥

 LLD) ............................. +20 mV … +10 V, in 4.88 mV steps

4.1.7.  ADC Signal Timing

ANALOG INPUT

DEADTIME

/DRDY
/DACC

COINC GATE
SCA

DATA

7072:

CONVERSION 

TIME

VALID

TIME

TO 

PEAK

DECAY TIME

THRESHOLD

DEADTIME = Time-to-peak + MAX(DecayTime; ConversionTime)

General ADC Signal Timing

Figure 4.1: General ADC Signal Timing

Содержание 7072T

Страница 1: ...7072T Dual Timing 500ns ADC User Manual copyright FAST ComTec GmbH Gr nwalder Weg 28a D 82041 Oberhaching Germany Version 2 3 May 11 2009...

Страница 2: ...rved This manual contains proprietary information no part of it may be reproduced by any means without prior written permission of FAST ComTec Gr nwalder Weg 28a D 82041 Oberhaching Germany Tel 49 89...

Страница 3: ...1 3 2 3 Time to Digital Conversion 3 2 3 3 Setting device parameters 3 2 3 3 1 Adjust TDC threshold 3 2 3 3 2 Adjust ADC threshold 3 2 3 3 3 Adjust LLD 3 2 3 3 4 Adjust ULD 3 3 3 3 5 Adjust Coinciden...

Страница 4: ...Figure 2 4 MONITOR output signals 2 3 Figure 2 5 Rear panel 2 5 Figure 2 6 ADC port connectors 2 5 Figure 4 1 General ADC Signal Timing 4 3 Figure 4 2 PHA typical noise spectrum 4 4 Figure 4 3 ADC ty...

Страница 5: ...on neutron and X ray imaging The built in Single Channel Analyzer SCA has a separate output on the front panel This output can be used in the ADC modes in such applications as Moessbauer Spectroscopy...

Страница 6: ...n 2 1 Overview The Model 7072T is a single width NIM module It has two fully equal and independent channels Both channels are controlled using the front panel buttons and switches No jumper or switch...

Страница 7: ...ept different signal standards depending on the operating mode PHA SVA mode accept positive TTL as Gate signals input impedance 4 7 k pull up in coincidence and pull down in anti coincidence Due to th...

Страница 8: ...ceivers is fine tunable in a range of 1 0 V 0 1 V referred to the input signal in steps of 1 22 mV 2 2 2 MONITOR outputs Two BNC connectors 5V 2V GND GND 5V 50R 4 2 3 VBB 7 6 STOP In GND ECL STOP TDC...

Страница 9: ...s These buttons are Up Down for each of the channels There is also a Mode button used to switch between Normal operation mode and different Adjust modes To prevent accidental changes this button is hi...

Страница 10: ...ComTec GmbH 2 5 2 3 Rear panel Data 13 bit binary data lines and data transfer command lines 25 pin female D Sub connector on the rear panel 2 3 1 ADC port connectors Figure 2 5 Rear panel Figure 2 6...

Страница 11: ...sholds Outside of that range between LLD and ULD there is no conversion To prevent triggering from noise and to adjust for small input offset voltages an ADC threshold is settable in the range of 100...

Страница 12: ...oincidence Normal operation An indication of beeing in the adjustment mode is the AGJUST LED lit The TDC and ADC threshold levels are set in steps of 1 22 mV while the LLD and ULD thresholds are set i...

Страница 13: ...operation mode the UP DOWN buttons have two different functions In PHA SVA mode the Up Down buttons select the conversion range of the ADC The conversion range of each channel cycles through 8k 4k 2k...

Страница 14: ...1 2 Recommended operating conditions Supply voltage from NIM BIN supply 6 V 12 V 24 V Temperature range 0 to 50 C PHA mode Amplitude 0 025 10 V Pulse form Gaussian shaped Signal shaping time 250 ns 25...

Страница 15: ...d voltage 1 V 100 mV in steps of 1 22 mV Pulse width below threshold 2 ns Sensitivity falling edge initiates time conversion STOP Input Input impedance diode protected 50 Threshold voltage 1 V 100 mV...

Страница 16: ...teps ADC threshold 100 mV 1 0 V in 1 22 mV steps LLD ADC th LLD ULD 20 mV 10 V in 4 88 mV steps ULD ULD LLD 20 mV 10 V in 4 88 mV steps 4 1 7 ADC Signal Timing ANALOG INPUT DEADTIME DRDY DACC COINC GA...

Страница 17: ...n 8k range 500ns flat top pulses 3 4 chs1 FWHM Integral non linearity linear fit typ 0 16 8k range linear fit typ 0 16 4k range Differential non linearity including effects from integral non linearity...

Страница 18: ...s range typ 4 1 chs FWHM Integral non linearity 50 ns range linear fit typ 0 12 Differential non linearity 50 ns range typ 0 5 for 99 of usable channels 0 4 Countrate stability upto 100 kcps 0 003 ADC...

Страница 19: ...5 0 0 3 0 0 0 3 5 0 0 4 0 0 0 4 5 0 0 5 0 0 0 5 5 0 0 6 0 0 0 6 5 0 0 7 0 0 0 7 5 0 0 8 0 0 0 Channel Counts Figure 4 4 TDC typical noise spectrum 50ns range TDC 50ns Range 1 0 0 5 0 0 0 5 1 0 1 0 0...

Страница 20: ...Appendix Physical ComTec GmbH Appendix 4 7 4 3 Physical Physical size single width NIM module 1 35 x 8 71 inches 3 43 x 22 13 cm as per TID 20893 rev Shipping weight 1 8 kg net 1 0 kg...

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