​    4m

​time res. - single shot

​max. meas. rate (msa/S)

    0.9 ps

    up to 11

​    2 ​ps

time res. - averaged

freq. res. (digits/s)

GT668PXI-1 cards can be expanded up to 36 Channels Single Ended Input in a single 3U PXI chassis.

GT8000IP is a 7 slot PXI chassis with a touch screen display that is best suited for bench top instrumentation.

GuideTech’s GT668PXI-1 PXI 3U form factor, meets industrial standard chassis with an expandable platform, achieving optimal test system at low cost. High accuracy 100MHz time base with NIST traceable calibration. Some of the GT668PXI-1 measurements include Jitter measurements, PLL & Clock Jitter, Spread Spectrum Modulation, PLL Lock Time, Frequency, Period, Pulse Width, Skew, Tpd, Rise/Fall Time, Time Interval Error and more.


No. of channels: 2 MAIN INPUT CHANNELS:

  • Frequency range: DC – 2.7 GHz
  • Sensitivity: 50 m V rms (DC – 2.7 GHz)
  • Input impedance: 1KΩ || 10pF, or 50Ω software programmable
  • Coupling: DC
  • Threshold setting (each channel):

           * Range: -5 V to + 5 V

           * Resolution: 160 µ V

           * Absolute accuracy: 0.1% of setting

           * Automatic threshold setting is available


  • Coupling: DC/AC sw programmable
  • Threshold setting

           * Range: – 5 V to + 5 V

           * Resolution: 150 µ V

           * Absolute accuracy: 0.1% of setting

                  – Automatic threshold setting available


  • Frequency range:

            * External clock: 10 MHz (+ 100 Hz)

  • Minimum pulse width: 6 nS
  • Sensitivity: 50 mV rms
  • Input impedance: 1K (user may install additional resistor)


  • Temperature compensated crystal oscillator

            * Temp: 0 – 45 C + 1ppm

            * Aging: <1 ppm / year

  • Main Channels: 2, SmA
  • External Clock: 1, SmA
  • External Arm: 1, SmA

A true breakthrough in high-speed Time Measurement and test technology, GuideTech's GT668PXI-1 leverages the power of its CTIA continuous time-stamping technology, eliminating the need for supplemental triggers, pattern markers or clock recovery circuits.

GuideTech’s CTIAs enables serial interfaces pattern verification and full jitter analysis in milliseconds for fast, automated characterization and high-throughput production test on all ATE platforms, including low-cost and in-house testers.