Frequency Counter Intelligent Counter GFC-8131H

Specification

Feature	Specification
DISPLAY	8 digits with Hz, kHz, MHz, GHz, s, ms, μs, and overflow indicator
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: 100nHz for 1Hz input, 0.1Hz for 100MHz input (Frequency); 10ns for 1Hz, 0.1×10⁻¹⁵s for 100MHz (Period)
	Display Accuracy: 7 digits for 1 sec gate time, 6 digits for 100ms gate time, 5 digits for 10ms gate time
	Period Range: 8ns ~ 100s (at least 7 digits displayed per gate time)
CHANNEL B	Range: 50MHz ~ 2.7GHz (GFC-8270H), 50MHz ~ 1.3GHz (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; Power consumption: 15VA max.
DIMENSIONS & WEIGHT	Dimensions: 230(W) × 95(H) × 280(D) mm
	Weight: Approx. 2.2kg

* GFC-8270H has been Discontinued

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.