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Time Interval & Frequency Counters

Time Interval & Frequency Counters

Our Time Interval Counters perform virtually all of the time and frequency measurements required in a laboratory or ATE environment. The instrument's single-shot timing resolution and low jitter make it the counter of choice for almost any application.
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  1. SRS SR620 Time Interval/Frequency Counter

    SRS SR620 Time Interval/Frequency Counter

    • 25 ps single-shot time resolution
    • 1.3 GHz maximum frequency measurement
    • 1 nHz frequency resolution
    • 0.001° phase resolution
    • Statistical analysis & allan variance
    • Sample size from 1 to 1 million
    • Graphical output to XY scopes
    • Hardcopy to printers and plotters
    • GPIB and RS-232 interfaces
    • Optional ovenized timebase
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  2. SRS SR625 Rubidium Stabilised Frequency Counter

    SRS SR625 Rubidium Stabilised Frequency Counter

    • 12 digit frequency resolution
    • Rubidium atomic timebase
    • 2 GHz direct prescaler input
    • Short 10 minute warmup period
    • Portable operation
    • 10 MHz Rb timebase output
    • GPIB and RS-232 interfaces
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  3. SRS FS740 — GPS Time and Frequency System

    SRS FS740 — GPS Time and Frequency System

    • GPS disciplined 10 MHz reference 
    • 1 × 10-13 long term stability
    • Time tag events to UTC or GPS
    • Sine, square, triangle, IRIG-B output
    • Frequency counter, distribution amplifiers
    • Ethernet and RS-232 computer interfaces

     

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