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CO4020 quad 4-input logic unit

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Brief description:Universal logic module for AND, OR, Veto, fan-out and gating functions Four independent channels overlapped outputs and adjustable width outputs 3ns overlap resolution TTL and fast negative NIM output ORTECCO4020 model quad 4-input logic unit provides the flexibility to meet most experimental logic requirements without the need for additional logic modules

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Universal logic modules for AND, OR, Veto, fan-out and gating functions
four independent channels
Overlap output and adjustable width output
3 ns overlap resolution
TTL and fast negative NIM output

The ORTEC CO4020 model quad 4-input logic unit can flexibly meet most experimental logic requirements without the need for additional logic modules. The logic functions it can perform are: coincidence (AND), anti-match (rejection), fan-in (OR), fan-out, fast negative NIM to TTL conversion and pulse stretching. Model CO4020 contains four identical and independent 4-input logic channels in a single-wide NIM module.

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All four inputs (A, B, C, and D) accept NIM fast negative logic pulses. Front panel, three-position slide switch allows selection of logic requirements for each input individually.

The X output is a NIM fast negative logic pulse whose width is determined by the width and overlap of the valid input pulses. The X output provides the complement of the X output. The update Y output can be set to trigger on the leading or trailing edge of the X output pulse. The width of the Y output is adjustable from 40 ns to 40 μs in two selectable ranges. The two Y outputs provide NIM fast negative logic pulses. The third Y output provides positive TTL logic pulses suitable for gated ADCs and multi-channel analyzers. Front panel LEDs are used to indicate which channel is generating output.

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CO4020Model contains four independent channels with identical functionality. Specifications apply to all four channels unless otherwise noted.

Performance

Number of identical channels	4.
Count rate	•XandXOutput100 MHz。 •YOutput1/(1.1 X Width)。
Minimum pulse overlap	3 ns。
propagation delay	•input toX、X<8 ns。 •input toY (Neg)<13 ns。 •input toY (Pos)<20 ns。
YOutput dead time	Width set110％。

Controls and lights

Width adjustment (W）	Adjustable front panel screwdriver adjustment controlsYThe width of the output. The front panel slide switch allows selection of two ranges:S（40-1200 ns) orL（1-40 μs）。
LEDindicator light	When the output is activated, the front panel is redLEDlights up.
control switch	on the front panel7a3The slide switch selects the following logic functions, gate operations,Youtput trigger point andYOutput width adjustment range: Input logic switch (A/OFF/A、B/OFF/B、C/OFF/C、D/OFF/DandG/OFF/G） These switches select the following basic logic functions. inOFFposition, the status of this input will be ignored. When the switch is set toA、B、C、DandGposition, the module will be inXOutput executionORfunction. X = A + B + C + D + G Set the switch toA、B、C、DandGlocation, available atXThe output terminal providesAND(conform to) function. X= A · B · C · D · G willGChange the switch toGposition, common gate rejection (anti-coincidence) can be achieved. X= A · B · C · D ·G •YOutput trigger switch (↓︎ or ↑︎) allowXNegative transition (↓︎) or positive transition (↑︎) of output triggers constant widthYoutput. • YOutput width range switch set toS（40-1200 ns) orL（1-40 μs）。

Input

A、B、CandDInput	front panelLEMOconnector accepts negative fastNIMlogic signal. •minimum amplitude -600 mV。 •minimum width 3 ns。 •Input impedance 50Ω。
Gate input terminal (G）	front panelLEMOconnector accepts negative fastNIMlogic signal. The gate input is fed to all four sections. •minimum amplitude -600 mV。 •minimum width 3 ns。 •Input impedance 50Ω。

Output

XandXOutput	front panelLEMOThe connector provides the input signal to satisfy the logical in-phase (X) and inverting (X) results. logic required by the front panel slide switchA/OFF/A、B/OFF/B、C/OFF/C、D/OFF/DandG/OFF/Gsettings.XandXis fastNIMlogic signal. • Amplitude -20 mA。 • rise time <4 ns。 • output width Determined by the input signal duration and logic settings.
YOutput terminals (⊓ and ⊔)	front panelLEMOThe connector provides two updated fastNIMlogical output (⊔) and an updated positiveTTLLogic output (⊓). all threeYThe output width of the output terminal is set by the width adjustment control.YOutput selected by front panel slide switchXTriggered by a negative (↓︎) or positive (↑︎) transition on the overlap output.

electrical and mechanical

Required power supply	CO4020type by standardNIMPower box and power supply. The required power supply is+6 V，200 mA；-6 V，1000 mA。
weight	Net weight 1.3Kilogram (2.3pounds).Shipping weight 2.2Kilogram (4.8pounds).
Size	NIMStandard single width module,3.43 x 22.13cm (1.35 x 8.714inches), consistent withDOE/ER-0457Trequirements.

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Description

CO4020

four way4input logic unit

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CO4020 quad 4-input logic unit

CO4020 quad 4-input logic unit

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