National Vp-4546a 8 Digit 2 Channel 10 Hz – 100 MHz Frequency Meter

National VP-4546A 8 Digit 2 Channel 10 Hz – 100 MHz Electronic Frequency Counter Technical Specifications

• Frequency Measurement Range: Channel A: 10 Hz – 100 MHz, Channel B: 10 Hz – 2.5 MHz (time interval and period measurements)

• Display: 8 digit LED digital display

• Number of Channels: 2 independent input channels (A and B)

• Measurement Functions: Frequency measurement, period measurement, A/B ratio, time interval (Time A-B), pulse count (Count A), and test function

• Connection Type: 2 BNC inputs (Channel A: 1 MΩ, Channel B: 1 MΩ)

• Input Coupler: AC, DC, and TTL selectable

• Input Attenuator: ×1, ×10, and ×100 selectable

• Trigger Level: Independent adjustable trigger level for Channel A and Channel B

• Input Structure: Common (COM) or separate (SEP) channel operating mode can be selected

• Frequency Range Selection: 10 MHz and 100 MHz measurement range can be selected

• Gate Time: 0.01 s, 0.1 s, 1 s, and 10 s can be selected

• Gate Thresholds: ×1, ×10, ×100, and ×1000

• Hold Off Time: Adjustable Hold-Off time

• Indicator Functions: Normal operation, Gate and Overflow (OVFL) status indicators

• Supply: AC mains supply

• Dimensions & Weight: Approximately 280 × 110 × 320 mm, approximately 4 kg

• Key Technical Advantages: 8-digit high-contrast LED display, dual-channel input design, support for frequency and period measurement as well as time range and A/B ratio measurement, independent trigger level adjustment, AC/DC/TTL input selection, and a robust desktop design for laboratory use.