GFT1804 I Pulse & Delay Generator Board Level

 

GFT1804 photo

Features

  • 2 independent delay channels (or 4 or 8 in option)
  • 100 ps delay resolution (1ps in option)
  • 25 ps channel to channel RMS jitter (5 ps in option)
  • Output pulse 1.5 to 5 V / 50 Ω, 2 ns rise time with variable control of width, polarity, amplitude, and MUX mode
  • Independent trigger rate (repetitive, single or burst) for every channel
  • External trigger from two inputs (one with pre-scaler) or internal trigger mode from two synchronous programmable timers and soft command.
  • Gate (or second trigger) input
  • External clocking up to 240 MHz (user programmable)
  • Controlled via USB and Ethernet (WiFi + Bluetooth in option)
  • Ultra-compact packaging and low power
  • External AC/DC compact power supply
  • Channel output amplitude option: 3 to 10 V or 15 to 50 V or LVDS level

- Datasheet

Description

The GFT1804 Pulse & Delay Generator provides 2 (or 4 or 8 in option) independent delayed pulses. Delays up to 10 seconds can be programmed with 100 ps resolution and channel to channel jitter less than 25 ps RMS. An option allows to enhance delay resolution to 1 ps, and channel to channel jitter to 5 ps RMS.

SMB outputs deliver 1.5 V to 5 V, 2 ns rise time pulses, under 50 Ω. Pulse amplitude, polarity and width are adjustable on each output channel. In option, pulse amplitude can be 3 V to 10 V or 15 V to 50 V under 50 Ω or LVDS level.

The model GFT1804 offer two inputs or two internal synchronized timers (adjustable from 0.1 Hz to 50 MHz) or software command for triggering all selected delay channel. The internal timers may be started by pushbutton or software command. Either trigger rate may be set as one-shot or repetitive.

The generator uses an internal 100 MHz TCXO clock reference, or an external user programmable (from 10 MHz to 240 MHz) clock (sine or square).

GFT1804 parameters can be remote controlled via Ethernet or USB to UART (or WiFi / Bluetooth in option).

Application example: The GFT1804 is well suited to synchronize all the devices of a Picosecond Laser system with only one compact unit and one GUI. In this application the “Clock reference input” of the pulse and delay generator receives a signal (80 MHz for example) from laser oscillator via an O/E (optical to electrical converter).From the GFT1804 Generator each amplifier (Pump-laser, Q-switch, Pockel cell ...) or diagnostic instruments (Digitizer, Calorimeter, CCD camera …) can receive repetitive or single pulses (adjusted in rate, delay, amplitude, polarity and width) synchronized on “Clock reference input” with a very low jitter.

From generator 4 Input and output GPIO under software control allow command for security or control to low frequency device