Specifications

1) Frequency measurements.

Channel  A

Range: 10Hz~10MHz direct count

10MHz to 100MHz count in proportion

Direct count: 1Hz,10Hz,100Hz switch selectable.

Count in proportion:10Hz,100Hz,1000Hz switch selectable.

Gate time: 0.01s, 0.1s, 1s switch selectable.

Accuracy: ±1 count value ±base time error ×measured frequency

Channel  B

Range: 100MHz~1GHz

Resolution: 100Hz,1kHz,10kHz

Gate time:  0.01s ,0.1s,1s

Accuracy: ±1 count value ±base time error × measured frequency

2) Period measurement

Input: Channel A

Range: 10Hz~10MHz

Resolution:10^-7s,10^-8s,10^-9s switch selectable

Accuracy: ±1count value ±base time error × measured period

3) Accumulated measurements

Input: Channel A

Range: 10Hz~10MHz

Resolution: ±1 count pulse

4. Self-checking: Display:8 LED display with  0~9 character simultaneous display

2. Input characteristics

1) Channel A

Input sensitivity:  10MHz range:10Hz~8MHz     20mVrms

                             8MHz~10MHz   30mVrms

100MHz range:10MHz~80MHz  20mVrm 80MHz~100MHz  30mVrms

Attenuation: ×1, ×20 fixed

Filter (CH1 only) Low pass: AC 100 kHz-3dB

Impedance: Approximate 1MΩ (less then 35pF)

Maximum safety voltage: 250V (DC+ACrms)

2) Channel B

Input sensitivity: 20mVrms

Impedance: Approximate 50Ω

Maximum safety voltage: 3V

3. Time base

Time-base frequency 10MHz

Short- term stability: ±3×10^-9 / 1s (average)

Long -term stability: 2×10^-5 /month

Temperature Coefficient: ±1×10^-5 ,0~40°C

Line voltage: the change of voltage of ±10% in each, the time-base frequency change ±1×10^-7

4. General

Display: 8 digits, 0.39 inch green LED display with decimal point, gate, KHz,        MHz and μs indication.

Power requirement: AC 220V ± 10% 50Hz

Warm-up time: 20 minutes when cold started at 25°C

Temperature: rated range of use: -5~50°C

           Storage and transport: -40~60°C

Humidity: operating: 10~90%RH

         Storage: 5~95%RH

Dimension: 240mm×205mm× 85mm

Weight: about 2kg