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The GFC-8000 Series performs virtually all of the counting measurements required in laboratories, in terms of both period and frequency. A bright red 8 digit LED display with an included overflow indicator provides a clear view. Both models feature a stable time base with a maximum resolution of 100 ...Read more
GW Instek - GFC-8270H & GFC-8131H Intelligent Counter

FEATURES :

  • Frequency and Period Measurement
  • High Resolution at Both High and Low Frequency
  • 0.01Hz~2.7GHz Frequency Range(GFC-8270H)
  • 0.01Hz~1.3GHz Frequency Range(GFC-8131H)
  • 10mV rms High Sensitivity
  • 100nHz Resolution for 1Hz Input
  • Variable Trigger Level Control
  • Microprocessor Controlled Intelligent Counter(only GFC-8270H)



  • Details
  • Specifications

The GFC-8000 Series performs virtually all of the counting measurements required in laboratories, in terms of both period and frequency. A bright red 8 digit LED display with an included overflow indicator provides a clear view. Both models feature a stable time base with a maximum resolution of 100nHz and 10nS at 1Hz for frequency and period measurement, respectively. Gate time can be configured for fast response (5 digits/10ms) or accuracy (7 digits/s) for more control. For high frequency needs, the GFC-8270H can operate at up to 2.7GHz. The GFC-8000 Series features easy operation with a simple front panel interface, suitable for both portable and bench-top use.

GFC-8270H / GFC-8131H Specifications

The specifications apply when the GFC-8270H / GFC-8131H is powered on for at least 30 minutes under +20°C~+30°C.

 

DISPLAY

 

8 digits with Hz, kHz, MHz, GHz, s, ms, μs, and overflow

GATE TIME

 

Variable from 10ms to 10s, or 1 period of input depending on whichever is greater

ACCURACY

 

±(resolution ± timebase error)

CHANNEL A

Range

DC coupling: 0.01Hz ~ 120MHz
AC coupling: 30Hz ~ 120MHz

Sensitivity

10mV typical, 50mV maximum

Coupling

AC or DC, selectable

Filter

Low pass, selectable in or out for channel A
(-3dB point, nominal 100kHz)

Impedance

1MΩ // 40pF

Attenuator

1/1 or 1/20dB

Trigger Level

-2.5VDC ~ +2.5VDC

Adjustment Resolution

For frequency measurement, the maximum resolution is 100nHz for 1Hz and 0.1Hz for 100MHz inputs respectively.
For period measurement, the maximum resolution is 10ns for 1Hz input, and 0.1x10-15s for 100MHz inputs respectively.

Display Accuracy

7 digits for 1 sec gate time
6 digits for 100ms gate time
5 digits for 10ms gate time

Period Range

8ns ~ 100ns (at least 7 digits displayed per gate time)

CHANNEL B

Range

50MHz ~ 2.7GHz for GFC-8270H
50MHz ~ 1.3GHz for GFC-8131H

Sensitivity

50mVrms (10mVrms typical) for GFC-8270H
40mVrms (10mVrms typical) for GFC-8131H

Coupling

AC only

TIME BASE

Aging Rate

1ppm per month

Temperature

5ppm, 23°C + 5°C

Line Variation

0.005ppm for + 10% variation

POWER SOURCE

 

AC 100V/120V/220V/230V ±10%, 50/60Hz

DIMENSIONS & WEIGHT

 

230(W) × 95(H) × 280(D) mm
Approx. 2.2kg

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