Features
Micro-Controller Based Design Self Test for Diagnosis Reciprocal Counting for High Resolution at Low Frequencies 8 Digits 0.5" LED Display Frequency, Period, Totalize, Ratio & RPM Functions Wide Frequency Range 0.1Hz to 3.4GHz High Sensitivity	AC / DC Coupling Low Pass Filter for Noisy Low Frequency Input 20dB Input Attenuator Display Hold Facility Hardware Reset Control 5PPM High Stability TCXO Time base

Technical Specifications
Frequency Range	0.1Hz to 3.4GHz.
Display	8 Digit 0.5" LED Display.
Gate Time	10mS, 100mS, 1Sec, 10Sec selectable.
Accuracy	± (resolution ± time base error).
Input I
Frequency Range	DC coupled 0.1Hz to 120MHz. AC coupled 30Hz to 120MHz.
Input Impedance	1Mohm || 50 pF.
Sensitivity	<50mVrms (15mVrms typically).
Max. Input Voltage	100V DC or 100V rms at 400Hz falling to 10V rms at 1MHz.
Coupling	AC or DC switchable.
Filter	100KHz LPF, switchable.
Attenuator	0 & 20dB, switchable.
Resolution	100nHz to 10Hz (7 digit on 1Sec Gate Time).
Period Range	10nS to 10S (at least 7 digits displayed for per Sec Gate Time).
RPM Range	6 RPM to 7200 x 106 RPM.
Total
Frequency Range	0.1Hz to 10MHz.
Totalizer Range	99999999 max.
Input II
Frequency Range	100MHz to 3400MHz.
Input Impedance	50 ohm ± 5%.
Sensitivity	<50mVrms (15mVrms typically).
Max. Input Voltage	2Vrms AC / 100V DC.
Coupling	AC only.
Time Base
Frequency	10MHz.
Aging Rate	±1PPM per month.
Temp Stability	±5PPM 23ºC ±5ºC.
Line Variation	±0.005PPM for ±10% variation.
Power Source	230V ±10%, 50Hz AC.