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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.
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== 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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{{attachment:tqdc-16-fp-thm.png|TQDC-16 VME TDC Module Front Panel}}
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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
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== 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 [[VmeRegistersTqdc16|TQDC-16 VME Registers]]
== VME Data Format ==
* [[DataFormatTQDC|TQDC-16 Raw Data Format]]
== Block Diagram ==
{{attachment:tqdc-diagram.png}}
== Trigger Logic Diagram ==
{{attachment:tdc_trigger_small.png}}
== 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
[[Lut Table usage|Trigger logic using LUT tables]]
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[[CategoryTdc|TDC]] [[CategoryAdc|ADC]] [[CategoryVme|VME]]