KIT - METER FREQ 50MHZ MK2 02/07
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Ref: Silicon Chip February 2007
An invaluable service tool, this frequency meter kit features an 8-digit LCD, automatic indication of units (Hz, kHz, MHz or GHz) and prescaler. Kit includes PCB with overlay, enclosure, LCD and all specified components.
• Input Impedance: 1.1MW in parallel with about 10pF
• Frequency range: 0.1Hz to 50MHz or better
• Untrimmed accuracy: ±20ppm equivalent to 1000Hz at 50MHz
• Trimmed accuracy: ±10ppm from -20°C to 70°C
• Resolution: High Resolution Mode: 0.1Hz from 0.1-150Hz; 1Hz from150Hz-16MHz; 10Hz from 16-50MHz. Low • • • Resolution Mode: 1Hz from 1-999Hz; 10Hz from 1kHz-50MHz
• Update time (approx.): 200ms for 10Hz resolution; 1s for 1Hz resolution; 1s for 0.1Hz resolution to 10Hz, 10s at 0.1Hz
• Display units: Hz from 0.1-999Hz; kHz from 1-999.999kHz; MHz from1-50MHz
• Current consumption: 65mA with 7.5-12V input