Kenwood FC-758 Frequency Counter

Kenwood / Frequency Counter / FC-758

Measurement Range/Unit kHz mode : 5 Hz -- 10 MHz/kHz
MHz mode : 5 Hz -- 100 MHz/kHz 
Accuracy ± Reference time accuracy ± 1 count 
Gate Time 0.01 s? 0.1 s? 1 s? 10 s 
Frequency Measurement (ch B) 
Measurement Range/Unit 80 MHz - 1?200 MHz (1.2 GHz)/MHz 
Accuracy ± Reference time accuracy ± 1 count 
Gate Time 0.032 s? 0.32 s? 3.2 s? 32 s 
Period Measurement (A)  
Measurement Range 0.04 μs - 200 ms (5 Hz -- 25 MHz) 
Accuracy ± 1 count ± reference time accuracy
± trigger error 
Resolution 10 ps -- 100 ns 
Unit μsec 
Minimum Pulse Width 0.04 μs 
Magnification × 1? × 10? × 100? × 1000 
Pulse Width Measurement (ch A) 
Measurement Range 0.25 μs -- 200 ms (5 Hz -- 2 MHz) 
Resolution 100 ps -- 100 ns 
Accuracy ± 1 count ± reference time accuracy
± trigger error ± N 
Minimum Pulse Width 250 μs 
Unit μs 
Magnification × 1? × 10? × 100? × 1000 
Single Phenomenon Standby mode by resetting 
Addition Counter Measurement (A) 
Counting Capacity 0 - 99?999?999 
Measurement Range 5 Hz - 10 MHz 
Control Reset/Hold possible from front panel. Always ON except when Start/Stop o
n the rear panel is set to LOW level 
Input Characteristics (ch A) 
Frequency Bandwidth 5 Hz - 100 MHz? AC coupling 
Sensitivity (Sine Wave) kHz Freq. : 20 mVrms (5 Hz - 10 MHz)
MHz Freq. : 20 mVrms (5 MHz - 30 MHz)
50 mVrms (30 MHz -- 100 MHz) 
Input Impedance 1 MW? 40 pF or less 
Max. Input Voltage 42 V (DC AC peak) 
Attenuator × 1 (1/1)? × 10 (1/10) 
Low-Pass Filter 100 kHz? -3 dB 
Input Characteristics (ch B) 
Frequency Bandwidth 80 MHz -- 2.4 GHz? AC coupling 
Sensitivity (Sine Wave) 5 mVrms? (80 MHz -- 600 MHz)
15 mVrms? (600 MHz -- 900 MHz)
35 mVrms? (1.0 GHz -- 2.4 GHz) 
Input Impedance 50W 
Max. Input Voltage 1 Vrms 
Reference Oscillator 
Oscillating Frequency (ch A? B) 10 MHz? 1× 10-6 / 23 ± 5°C 
Stability (ch A? B) 1 × 10-6 / 0 to 40°C (23°C as a reference)
1 × 10-6 
Display 
Display 8 digits? LED (7-segment)
kHz/μs? MHz? GATE? OVER FLOW 
Function Display FREQ A? FREQ B? PEIOD A? PULSE A? TOTAL? CHECK 
Counting Time CH A: 0.01 s? 0.1 s? 1.0 s? 10 s
CH B: 0.032s? 0.32 s? 3.2s? 32 s 
Self Check 
Display Counting time base (Internal 10MHz) 
Gate Time/Resolution 0.01 s? 0.1 s? 1.0s? 10s / 0.1 Hz - 100 Hz 
Environmental Condition 
Storage Temperature/Humidity -20°C to 60°C? 70% or less 
Operation Temperature/Humidity 0°C to 40°C? 80% or less 
Specification Guarantee Temperature/Humidity 23°C ± 5°C? 70% or less 
Others 
Power Requirements/Power Consumption AC 100/120/220/230 V ± 10%
50/60 Hz / Approx. 20 VA 
Dimensions (W × H × D) 240 × 64 × 190 mm
(260 × 70 × 210 mm, maximum dimensions) 
Weight 1.8 kg 
Accessories Instruction Manual (1) Power Cable (1) 
Applicable Standard 
EMI EN55011 (1991) Class B 
EMS IEC801-2 (1991) 8kVAD, IEC801-3 (1984) 3 V/m, IEC801-4 (1998) 1 kV, 5/50 μs, 
5 kHz 

OPTION