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High channel density
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12bit resolution
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2.8 µs / 16 ch conversion time
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600 ns fast clear time
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Zero and overflow suppression for each channel
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±0.1 % Integral non linearity
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±1.5% differential non linearity
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32 event buffer memory
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BLT32/MBLT64/CBLT32/CBLT64 data transfer
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Multicast commands
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Libraries, Demos (C and LabView) and Software tools for Windows and Linux
The CAEN Mod. V775N is a 1-unit wide VME 6U module housing 16 Time-to-Digital Conversion channels on LEMO 00 connectors. The Full Scale Range can be selected via VME from 140 ns to 1.2 µs with 8 bit resolution. The board can operate both in COMMON START and in COMMON STOP mode. Each time interval between the COM signal and the input signal is converted into a voltage level by the TAC sections. The outputs of the TAC sections are multiplexed and subsequently converted by two fast ADC modules (2.8 µs conversion time).
The integral non linearity is ±0.1% of full scale range (FSR), measured from 2% to 97% of FSR; the differential non linearity is ±1.5% of FSR, measured from 3% to 100% of FSR. The ADCs use a sliding scale technique to reduce the differential non-linearity.
Programmable zero suppression, multievent buffer memory, trigger counter and test features complete the flexibility of the unit. The module works in A24/A32 ADDRESS mode. The data transfer occurs in D16, D32, BLT32 or MBLT64 mode. The unit supports also the Chained Block Transfer (CBLT32/CBLT64) and the Multicast commands. The boards support the live insertion that allows inserting or removing them into the crate without switching it off.
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Compare
|
Image
|
Name
|
Package
|
No. of Channels
|
Resolution (bit)
|
Type
|
Conversion Time (µs)
|
LSB (ps)
|
Full Scale Range (µs)
|
Input Type
|
Connectors
|
|
|
VX1190A-2ESST |
VME64X |
128 |
19 / 17 |
Multihit Digital TDC |
- |
100 / 200 / 800 |
52 / 104 |
ECL / LVDS |
Robinson Nugent Flat |
|
|
DT5203 |
Desktop |
64 |
26 |
Multihit Digital TDC |
- |
3.125 |
52 |
LVDS |
1 edge connector type HSEC8-170 |
|
|
V1290A-2ESST |
VME |
32 |
21 |
Multihit Digital TDC |
- |
25 |
52 |
ECL / LVDS |
Std. Flat |
|
|
V1290N-2ESST |
VME |
16 |
21 |
Multihit Digital TDC |
- |
25 |
52 |
NIM |
LEMO |
|
|
V775N |
VME |
16 |
12 |
Analog TDC |
2.8 |
35 / 300 |
0.14 / 1.2 |
NIM |
LEMO |
|
|
A5203 |
Desktop |
64/128 |
26 |
Multihit Digital TDC |
- |
3.125 |
52 |
LVDS |
1 edge connector type HSEC8-170 |
|
|
V775 |
VME |
32 |
12 |
Analog TDC |
5.7 |
35 / 300 |
0.14 / 1.2 |
ECL |
Std. Flat |
|
|
V1190A-2ESST |
VME |
128 |
19 / 17 |
Multihit Digital TDC |
- |
100 / 200 / 800 |
52 / 104 |
ECL / LVDS |
Robinson Nugent Flat |
Technical Specifications
|
Packaging |
1-unit wide 6U VME module |
|
Inputs |
16 NIM inputs, 50 Ω impedance |
|
Full Scale Range |
VME programmable from 140 to 1200 ns (if sliding Scale is used FSR is reduced from 4095 to 3840 counts) |
|
Resolution |
12 bit |
|
LSB |
VME programmable from 35 to 300 ps |
|
RMS Noise |
0.8 counts typical, 2 counts maximum |
|
Integral non linearity |
±0.1% of FSR (measured from 5% to 95% of FSR=380 ns=3840 counts) |
|
Differential non linearity |
±1% (measured from 5% to 95% of FSR=380 ns=3840 counts) |
|
Interchannel Isolation |
> 66 dB |
|
Power rejection |
|
|
Fast clear time |
600 ns |
|
Conversion time |
2.8 µs for all channels |
|
Minimum Start/Stop delay |
|
|
Zero suppression |
Threshold values programmable in: 16 ADC counts steps over the entire FSR2 ADC counts steps over 1/8 of FSR |
|
Gate Common input |
Two LEMO 00 bridged connectors, NIM signal, high impedance Common Start/Stop signal |
|
Control inputs |
|
|
Control outputs |
|
|
VME interface |
A24/A32 Geographical Addressing Multicast commands D16/D32, BLT21/MBLT64 ,CBLT32/CBLT64 |
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