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TQDC-16 is a 16-channel discriminator, multi-hit time-stamping TDC and waveform digitizer. It is used to measure pulse arrival time, charge and pulse shape.
Features
- 16 channels, single-ended 50 Ohm input
- TDC: time-stamping, 25ps bin size
- Amplitude (charge) measurement: 10/14 bit, 80 MS/s ADC
- On-board trigger matching logic
Interface
- VME, VME64x
- Clock, Trigger and Reset inputs (LVDS)
- Local Trigger output (LVDS)
Technical Description
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LEDs
- 1 (red) - Error or unconfigured. Lights when module is reset.
- 2 (yellow) - Local trigger. Lights when trigger output is activated.
- 3 (green) - Data Busy. Lights when module has data to be read out.
Inputs
- INPUTs - 16 differential signal inputs
TTC bus input
Outputs
- TRIG - Local trigger output, 4 lines, 62.5 - 80.0 ns trigger logic delay
Specifications
- Discriminator minimal threshold 4 mV (highpass filter)
- Input signal range: ±270 mV
Power
- V2.0, V2.1
- +3.3V 1.8A
- +5V 2.8A
- V3.0, V4.0, V4.1
- +3.3V 4.2A
VME Registers
Detailed description of TQDC-16 VME Registers
VME Data Format
Block Diagram
Trigger Logic Diagram
Board Diagnostics
Available on PCB V4.1
Internal LED function while board is powered from VME
DONE LED (orange) |
Condition |
ON |
Normal operation |
off |
Booting |
Revision History
- 4.1 - SYSFAIL* driver, bugfix
- 4.0 - more precision on ADC: 14-bit
- 3.0 - bugfix
- 2.1 - features added:
- discriminator offset measurement points added
- thermometer added
- replaced VME P2 96-pin with 160-pin for VME64x compatibility
- configuration EEPROM added
- 2.0 - bugfix:
- fixed GA wiring
- added decoupling capacitor on discriminator threshold input (pin 4)
- 1.0 - base revision
Trigger logic using LUT tables