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10Hz to 1.3GHz Intelligent Multi-Function Digital Frequency Counter

Item no. CSI6100

10Hz to 1.3GHz Intelligent Multi-Function Digital Frequency Counter

Item no. CSI6100
18 In stock

10Hz to 1.3GHz Intelligent Multi-Function Digital Frequency Counter

An intelligent multi-function frequency counter controlled by an 8-bit micro-controller with eight-digit high bright LED display.

Four measuring functions:

  • Frequency
  • Period
  • Total mode
  • Self check
  • Also, a 10MHz OSC. OUT feature.

Manufactured by Precision Mastech (Model MS6100)


  • Frequency Measurements: 
    • Channel A: 10Hz to 100MHz
    • Channel B: 100MHz to 1.3GHz
  • Period Measurements Range: 0.1S to o.1uS (10Hz to 10MHz)
  • Total Measurements Range: 10Hz to 10MHz
  • Display: 8 digits (approx 10mm height) high bright LED display with decimal point
  • Overrange Indicator: OFL indication lights
  • Data Hold
  • Self Check: Verifies proper overall operation of the counter
  • 10 MHz OSC. Output
  • Conforms to IEC 1010-1 Safety Standard
  • Power: 110/220 VAC (50/60Hz) switchable (90-132VAC/198-264VAC)
  • Temprature: 0-40 deg C (operating) & -10-+50 deg C (storage)
  • Relative Humidity: 20% to 80% RH (0-40 deg C)
  • Dimensions: 11 13/16" x 10 1/4" x 2 15/16" (300 x 260 x 74 mm)
  • Weight (approx): 4.08 lbs (1850g)
  • Warranty: 1 Yr. Limited warranty

Input Characteristics:

  • Channel A:
    • Input Voltage Sensitivity: 
      • 10MHz range: 10Hz to 8 MHz, 25mV RMS. 8MHz to 10 MHz 50mV RMS.
      • 100MHz Range: 10MHz to 80MHz, 25mV RMS. 80MHz to 100 MHz, 50mV RMS.
    • Attenuation: x1, x20 fixed
    • Impedance: approx. 1Meg OHM less than 35pF
    • Maximum Voltage Protection: 250V RMS
  • Channel B:
    • Input Voltage Sensitivity: 20mV RMS
    • Impedance: Approx. 50 ohms
    • Maximum Input Voltage: 3V RMS

Resolution and Accuracy:

  • Frequency Measurements:
    • Channel A:
      • Range: 10MHz (10Hz to 10MHz)
      • Resolution: 1, 10, 100Hz selectable
      • Accuracy: ±1 count ± 1x10^-5 x frequency (month)
    • Channel B:
      • Range: 1300MHz (100MHz to 1300MHz)
      • Resolution: 100Hz, 1kHz, 10kHz selectable
      • Accuracy: ±1 count ± 5x10^-6 x frequency (minute)

Period Measurements:

  • Channel: A (only):
    • Range: 0.1S to 0.1µS (10Hz to 10MHz)
    • Resolution: 0.0µS to 0.00µS 0.000µS selectable
    • Accuracy: 
      ±1 count ± 5x10^-6 x frequency (minute)
      ±1 count ± 1x10^-5 x frequency (month)

Total Measurements:

  • Channel A (only):
    • Range: 10Hz to 10MHz
    • Resolution: 1 count input

Ships with:

  • BNC to BNC Test lead, 50 ohm, 100cm long
  • Power cord (U.S. style)
  • Users manual ,

Users Manual


1-year limited warranty

30 day satisfaction guarantee
Satisfaction Guarantee
Your satisfaction is important to us. If you're not satisfied, return the product within 30 days of purchase for a refund or credit.

Return policy
One year warranty
Limited Warranty
Circuit Specialists wants you to be happy with your purchase. This product comes with a one-year limited warranty.

Warranty policy
Free tech support
Free Tech Support
Circuit Specialists offers free technical support for the life of your product. Please call our technical team with any questions.

1-800-528-1417 ext. 3
Mon - Fri: 8:00 AM - 5 :00 PM (MST)

Some products must be specially ordered, usually resulting in a 1–2 business day delay. Please contact us for an estimated delivery date.