Precise Time Counter T3100

Single PCI board for PC
Time interval measurement range: 0 – 4400 seconds
Precision (standard deviation) < 35 ps at time interval measured from 0 to 50 ms
Frequency range up to 3.5 GHz
Frequency sampling up to 2 MSa/s
Measurement of Allan Deviation (ADEV)
Measurement of Time Interval Error (TIE, MTIE), TDEV
Totalize mode
Built-in automatic calibrator


Time Interval (between two pulses at two inputs or pulses appearing consecutively at a single, common input), Period, Pulse Width, Frequency, Frequency Sampling, Allan Deviation, Time Interval Error (TIE), Maximum TIE (MTIE), Time Deviation (TDEV), Totalize


Mean, Min and Max Values, Standard Deviation, Allan Deviation (frequency)


Tables and plots of statistical distributions, display of frequency sampling in time domain to show possible frequency variation (Sampling mode)

Time Interval & Period


0 – 4400 seconds (Inputs A and B)

Resolution (LSB):

25 ps in single-shot measurements, may be reduced to 1 ps by averaging

Precision (Standard Deviation)

< 35 ps at time interval measured from 0 to 2 ms (TCXO – T3100)
< 35 ps at time interval measured from 0 to 50 ms (OCXO – T3100S)
< 35 ps at 1 second (when an atomic clock is used as external reference clock)
< 35/ ps with averaging

Frequency & Period


Inputs A and B: 0.1 Hz to 200 MHz
Sensitivity < 75 mV RMS typ. (0.01 to 250 MHz)
Minimum slew rate: 10 V/μs
Input F: 100 MHz to 3.5 GHz
Sensitivity < -12 dBm (< 55 mV RMS) from 400 MHz to 3 GHz
Sensitivity < - 3 dBm (< 160 mV RMS) from 100 MHz to 3.5 GHz

Gate Time

selected from 1 μs to 10 s (reciprocal method)

Measurement Rate

up to 8·105 measurements/sec (when measuring frequency in 1 μs gate and storing data in internal FIFO memory),
up to 2.5·105 measurements/sec stored to memory in PC

Frequency Sampling


Inputs A and B: 1 to 200 MHz
Input F: 100 MHz to 3.5 GHz

Sampling Rate

0.1, 0.2, 0.5, 1.0, 2.0 MSa/s



0 to 1012 counts

Input frequency

max. 200 MHz

Download the full specification of T3100

Download more files for T3100

If you are a register user you can download user's manual, tools or software upgrade

for T3100 by clicking the button below.

You may be asked to sign in.