HYTEC ELECTRONICS LIMITED Timing System Trigger Adapter Modules

HYTEC ELECTRONICS LIMITED Timing System Trigger Adapter Modules Graham Cross www. hytec-electronics. co. uk

Hytec’s 3000 series Adapter modules are designed to convert low-level logic signals normally generated by timing system modules to the high level electrical and optical signals demanded by accelerator and laser facilities equipment. Extremely low jitter system with (typically <10 ps rms) with fast rise times (<1 ns). Delay values increments in 50 ps steps.

The fully modular format allows conversion of individual signals or a fan-out from one input to a group of outputs. The Adapters are stand-alone modules which plug into a mains-powered chassis unit (RIM 1809). They can be used with a variety of timing modules from different vendors. One example is the range of timing system modules (EVG, EVR, 4 CHTIM) marketed by Micro-Research Oy of Finland.

The fully modular format allows conversion of individual signals or a fan-out from one input to a group of outputs. There are two basic module types; • The 3020 - provides low level logic to electrical output conversion • The 3021 - provides logic to optical output conversion.

1809 Chassis Slots: Power: Monitor: Dissipation: Cooling: Temperature: Drift: 8 for Adapters, 2 for Power modules. 115 VAC/230 VAC dual selectable 47 -63 Hz, IEC connector. Power Fail provides logic level 1 indicating Power OK 200 W max. Convection or 1 U fan-tray option air-cooled. 0 to 40 deg C ambient operating temperature. Temperature variation should be restricted as far as possible.

3020 Electrical adapter

3020 Electrical Input Connectors: Four individual signal inputs (INP 1 -4 – Lemo 00) One common input (Fanout mode) Inputs can be Low Level TTL, Low Level PECL (LVPECL) or CML Output Connectors: Four individual outputs (OP 1 -4 – SMA) One common out (Cascade mode – Lemo 00) Amplitude: Duration: selectable. Rise time: Overshoot: Jitter: +5 V or +30 V (jumper selectable) into 50 ohms 1 ns, 20 ns (fixed) or >1 us (externally controlled) jumper 500 ps max for 5 V 1 ns pulse 1 ns max for 30 V 20 ns pulse 100 ns max for 5 V 1 us pulse 20% max for fast pulses, 10% for >1 us pulses. <10 ps rms max input-output. (5 ps rms typical)

3021 Optical adapters Type A 650 nm Type B 850 nm

3021 Optical Input Connectors: Four individual signal inputs (INP 1 -4 – Lemo 00) One common input (Fanout mode) Inputs can be Low Level TTL, Low Level PECL (LVPECL) or CML Output Connectors: Four individual optical outputs (OP 1 -4 – ST connectors) One common TTL out (Cascade mode – Lemo 00) Wavelength: Power O/P: Width: Risetime: O/P Width: Overshoot: Jitter 3021 A – 650 nm 1 m. W with internal attenuator 165 ps at half height typical 90 ps max. 180 ps fixed (2. 5 ns I/P pulse) 20% max. <10 ps rms 3021 B – 850 nm 700 u. W max. 1 us nominal 100 ps max. 1 us to 100 us variable 20% max <50 ns rms

Application example n http: //news. bbc. co. uk/1/hi/sci/tech/7656052. stm