Difference between revisions of "CAEN V488 TDC"
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(Created page with " File:CAEN_V488_TDC_Manual.pdf VME_modules") |
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| + | [[File:CAEN_V488_TDC_Manual.pdf]] | ||
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| + | The 12 bit ADC conversion time is 5.7 <math>\mu</math>s. A sliding scale technique is used to reduce differential nonlinearity by injecting an offset. This reduces the dynamic range to 0 <math>\Rightarrow</math> 3840. ADC values between 3841 and 4095 indicate an error. | ||
| + | |||
| + | The TDC measures the time interval between the falling ECL inputs to the start/stop and the channel. | ||
| + | |||
| + | You can change the dynamic range of the TDC by setting bits using the library function c775setFSR. | ||
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| + | [[Image:CAEN_V488_TDCAddressB.jpg | 400 px]][[Image:CAEN_V488_TDCAddressA.jpg | 400 px]] | ||
| + | [[Image:CAEN_V488_TDCAddressMap.jpg | 400 px]] | ||
| + | |||
| + | {| border="1" |cellpadding="20" cellspacing="0 | ||
| + | |colspan= "2" | Address | ||
| + | |- | ||
| + | | Pin || Setting | ||
| + | |- | ||
| + | |SW 1 || 2 | ||
| + | |- | ||
| + | |SW 2 || 2 | ||
| + | |- | ||
| + | |SW 3 || 0 | ||
| + | |- | ||
| + | |SW 4 || 0 | ||
| + | |} | ||
| + | =ROC library= | ||
| + | |||
| + | ==Compiling library== | ||
| + | |||
| + | |||
| + | = initialize TDC= | ||
| + | |||
| + | -> c775Init(0x610000) | ||
| + | Initialized TDC ID 0 at address 0x90610000 | ||
| − | + | =Common Start/Stop= | |
| + | |||
[[VME_modules]] | [[VME_modules]] | ||
Latest revision as of 23:43, 24 November 2014
The 12 bit ADC conversion time is 5.7 s. A sliding scale technique is used to reduce differential nonlinearity by injecting an offset. This reduces the dynamic range to 0 3840. ADC values between 3841 and 4095 indicate an error.
The TDC measures the time interval between the falling ECL inputs to the start/stop and the channel.
You can change the dynamic range of the TDC by setting bits using the library function c775setFSR.
| Address | |
| Pin | Setting |
| SW 1 | 2 |
| SW 2 | 2 |
| SW 3 | 0 |
| SW 4 | 0 |
ROC library
Compiling library
initialize TDC
-> c775Init(0x610000) Initialized TDC ID 0 at address 0x90610000