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| "For licensing or evaluation modules, contact: info@signion.com " |
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| " Evaluation modules, each containing DIL-14 OCXO, with tuning/ monitoring software
may be purchased for US$495/- " |
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| Conventional crystal oven |
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Difficult to match oven's set point to crystal turn point |
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Analog components need regulated internal supply (regulator adds an uncontrolled hotspot in the oven) |
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Varactor diode bias potentiometer for frequency tuning is time consuming. Setting may be affected by aging and shock |
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Component aging effects PID controller |
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| Microprocessor controlled crystal oven |
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Uses 8-pin SOIC low-cost micro-controller with internal EEPROM that retains: |
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Temperature set-point |
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Frequency tuning (digital potentiometer changes varactor diode bias) |
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Digital temperature sensor |
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Digital PID controller with feed-forward to suppress oscillations around set-point |
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Uses unregulated power for digital electronics/ heater (minimize uncontrolled heat dissipation) |
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PWM sensing of supply voltage |
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Digital compensation for voltage variations in heater PWM computation |
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| Microprocessor controlled crystal oven simplifies calibration |
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Optically isolated serial interface board for half-duplex communication to a PC |
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Simple protocol that allows: |
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Monitoring oven temperature |
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Setting oven temperature |
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Frequency tuning |
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Interactive GUI exercises protocol at operator's behest |
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Signion Systems
Plot 71 & 72
ANRICH Industrial Estate
Opp. Telephone Exchange
IDA Bollaram
Near Miyapur
Hyderabad – 502325
INDIA.
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| Office:
+91-8458-279320 |
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Factory:
+91-8458-279321 |
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E-Mail ID:
info@signion.com |
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