Check the listing for details. FA-5 FREQ COUNTER USB Frequency Counter Meter Acquisition Module. Condition: New. Listed at 181.45 USD. Description FA-5 FREQ COUNTER USB Frequency Counter Meter Acquisition Module 1Hz-6G w/ Power Measurement Specifications: - Type: FA-5-6GP - 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 power measurement range: -50DBM to +20DBM, 1M-550M, at 50 OHM - CH1 power measurement accuracy: 0.5DB at 10MHz - 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: