Click to Enlarge Image GFC-8131H (1.3GHz) Data Sheet Manual Low Price Guarantee	Frequency and Period measurement
	High resolution at both high and low frequency
	0.01Hz ~ 1.3GHz frequency range
	10mVrms High sensitivity
	100nHz resolution for 1Hz
	Variable Trigger Level control
	Display hold function

Model	Description	List Price	Sale Price
GFC-8131H	Frequency Counter - 1.3 GHz	$305.00	$274.50

SPECIFICATIONS
Display	8 digits with Hz, kHz, MHz, GHz, S, mS, µS, nS and overflow
Gate Time	Continuously vary from 10mS to 10S, or 1 period of input depending on whichever is greater
Accuracy	+(Resolution +Timebase error)
Channel A
Range	DC coupled 0.01Hz ~ 120MHz；AC coupled 30Hz ~ 120MHz
Sensitivity	10mVrms typical； 50mVrms max
Coupling	AC or DC switchable
Filter	Low pass, switchable in or out for channel A. -3dB point of nominally 100kHz
Impedance	1MΩ//40pF
Attenuator	x 20dB
Trigger Level Adjustment	-2.5 VDC to +2.5 VDC
Resolution	The maximum resolution for frequency measurement is 100nHz for 1Hz and 0.1Hz for 100MHz input respectively, and for period measurement is 10nS for 1Hz and 0.1fS (f=10-15) for 100MHz input respectively. At least 7,6,5 digits are display for 1S, 100mS, 10mS gate time respectively
Period Range	8nS to 100S at least 7 digits displayed for per second of gate time
Channel B
Range	50MHz to 1.3GHz
Sensitivity	<40mVrms (10mVrms typical)
Coupling	AC only
Time Base
Aging Rate	1 ppm, per Month
Temperature	5 ppm 23°C + 5°C
Line Variation	+0.005 ppm for +10% variation
Power Source	AC 100V/120V/220V/240V ±10%, 50/60Hz
Accessories	Instruction manual × 1, Power cord × 1, GTL-101 × 1, GTL-110 × 1
Dimensions & Weight	230(W) × 95(H) × 280(D) mm, Approx. 2.2kg