225MHz Universal Counter Timer


Tabor`s Model 6020 is a high-performance, 2-channel, 225MHz Universal Counter / Timer for applications from R&D benchtop to Automatic Test Equipment. The module offers thirteen automatic measurement functions and has an optional 1.3GHz third input available for RF requirements. Model 6020 offers outstanding frequency range and high resolution along with numerous special features and capabilities built-in to this optimal Counter/Timer. In short, there is simply no comparable instrument on the market for such a cost-effective price.

Relevant Documents
Data Sheet
  • 2 x 225 MHz independent input channels
  • Optional Frequency Measurement to 1.3 GHz
  • Standard TCXO stability Oscillator
  • Optional high-stability Rubidium Oscillator
  • Bright 9 digits display; visible at any lighting condition
  • Advanced measurement technique for maximum resolution in frequency measurements
  • Resolves frequency resolution to 8 digits in one second of gate time (with option 1)
  • 10ps averaged time interval resolution (with option 1)
  • Auto-triggering, auto-attenuation for error free operation
  • Complete input conditioning on both channels, with internal 50Ω, attenuators, low-pass filters, and slope selection
  • 13 automatic measurements, including peak signal amplitude
  • 50 built-in gate time intervals plus an external input, extend gate time range from 100µS to 1000s
  • GPIB programmability; including trigger level, and faster measurement rate
  • 10 storable front panel set-ups

Extremely User-Friendly Operation

Design approach emphasizes simplicity of operation. Numerous functions, parameters and operating modes resolved to simple, logical blocks and one keystroke operation. In fact, operation is so easy that first time users rarely require an Instruction Manual.

A.T.E. Environment

Unusually flexible software package. With simple commands one can adapt handshake, commands and termination to designated controller.

High Reliability

Each Tabor instrument is aged for at least two weeks and subsequently 100% computerized tested before shipping.


Model 6020 is virtually a self-contained automatic test system. A non-volatile memory is capable of storing up to 10 various front panel set-ups; each dedicated to a different test procedure. Recalling a specific set-up or accessing a few set-ups is performed with pushbutton ease.

High Performance Trigger

In manual mode, the trigger level is programmable from -5.1V to + 5.1V (-51V to + 51V in X10 mode) with an exceptional resolution of 10 mV (100mV in X10 mode). An automatic trigger mode is also available covering the frequencies from 100Hz to 150MHz.

Automatic Attenuation Selection

Auto trigger mode automatically switches attenuator settings if the input signal exceeds 5.1Vpk-pk.

DVM Measurements

Automatic triggering is used to establish the peak voltages for setting trigger points. This feature is used to measure peak voltage levels.

Individual Channel Filtering

The 6020 has an independent 100kHz low pass filter on each channel to reduce input stage sensitivity when making low-frequency measurements.

High Stability Time Base

Counter measurement stability can be improved by using an external clock or one of the two optional internal high stability time bases. The internal time base options are:

  • TCXO: Standard
  • OCXO: Option 1a
  • Rubidium: Option 4

Optional Analog Output

Option 3 (Analog Output) provides a high accuracy source to drive devices like chart recorders. This option is especially useful in measuring and recording the aging and temperature stability of devices like oscillators and Voltage to Frequency (V-F) converters.

Flexible Gate Time and Delay Time Control

The Model 6020 allows fine control of gate time and delay time settings with 46 pre-defined times ranging from 100ms to 10s. In addition, gate or delay may be set to any value between 100ms and 1000 seconds using an external input.


High-resolution, high-accuracy frequency and time measurements.
RF measurements.
V / F converter testing.
Automatic test systems.


Name Description
Option 1 x10 Time Base Multiplier
Option 1A OCXO + x10 Time Base Multiplier
Option 2 1.3GHz Channel C
Option 3 Analog Output
Option 4 Rubidium Time Base



Name Description
S-Rack mount 19" Single Rack Mounting Kit
D-Rack mount 19" Dual Rack Mounting Kit
Case Kit Professional Carrying Bag


Note: Options and Accessories must be specified at the time of your purchase.

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Download Type
Release Date
Ver. B
Data Sheets
Ver. E
Ver. 1.0.5

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