Precision Frequency-To-Voltage Converter Ectron Model 441AL
The Model 441AL produces an analog output that precisely represents the frequency of an applied input signal. Signal conditioning within
the instrument allows the frequency-determining algorithm to precisely follow the input signal frequency changes. Adjustable "input
frequency to output voltage" set points allow the user to closely bracket the frequency of interest.
A unique crystal-controlled
microcontroller design provides fast response, high conversion accuracy, and low output noise that is independent of frequency. The
front-panel display shows the input frequency with five-digit resolution. All operating parameters are set using the display and one other
front-panel control. Three selections of input sensitivity and input bandwidth are provided to minimize signal dropout to allow continuous,
accurate signal monitoring despite noise and signal level perturbations. The input signal conditioner accepts logic-level signals in
selectable ranges of 0-5 V, 0-25 V and 0-100 V. Three choices of input bandwidth are provided to enhance stable operation under varying
signal conditions.
The unique digital periodic filter cancels unwanted output variation caused by an input signal that varies in
frequency in a periodic manner.
Features:
• 1 Hz to 50 kHz frequency range
• Optimized for 5 V logic level input signals
• Millisecond start-up*
• Millisecond response to frequency change*
• Adjustable input filtering and sensitivity
• Front-panel display of frequency to 5 digits
• Digital periodic filter
• Crystal-controlled accuracy
• Precise control of output voltage vs. input frequency
• Miniature size
• Rugged construction
*For input frequencies over 1 kHz
The Model 441AL produces an analog output that precisely represents the frequency of an applied input signal. Signal conditioning within
the instrument allows the frequency-determining algorithm to precisely follow the input signal frequency changes. Adjustable "input
frequency to output voltage" set points allow the user to closely bracket the frequency of interest.
