Check the listing for details. FA-5 USB Frequency Counter Acquisition Module 1Hz-6GHz Frequency Meter pe66. Condition: New. Listed at 130.06 USD. Description FA-5 FREQ COUNTER USB Frequency Counter Acquisition Module 1Hz-6GHz Frequency Meter High Precision Specifications: - Type: FA-5-6G - CH1 frequency range: 1Hz-300MHz - CH1 input impedance: 50 OHM/1M OHM - CH1 input reference sensitivity: 50 OHM, 25mVRMS-2VRMS; 1M OHM, 25mVRMS-10VRMS - CH1 frequency accuracy: 0.1 second gate: 0.001Hz at 10M; 1 second gate: 0.0001Hz at 10M; 10-second gate: 0.00001Hz at 10M - CH1 measurement speed: 11 bits/sec at 10M - CH1 interface type: BNC - CH2 frequency range: 30MHz-6GHz - CH2 input impedance: 50 OHM - CH2 frequency accuracy: 0.1 second gate: 1Hz at 1GHz; 1 second gate: 0.01Hz at 1GHz; 10-second gate: 0.001Hz at 1GHz - CH2 input power: -20dBM to +13dBm at 0.5-5G - CH2 interface type: SMA - Gate time: 0.1 second/1 second/10 second - Internal reference frequency: 10MHz - Internal reference type: OCXO - Internal reference year aging: 0.5Hz - Internal reference output port power: 4dBm - External reference input power range: 0dBm to +20DBM - Default communication baud rate: 9600BPS - Operation mode: CH1 frequency measurement mode, CH2 frequency measurement mode, Self-check mode - Power supply: 11.7-12.5V; start: