DC509: Difference between revisions

1,003 bytes added ,  23 July 2019
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It is internally similar to the [[DC5009]] to which it could be converted through an upgrade kit.  
It is internally similar to the [[DC5009]] to which it could be converted through an upgrade kit.  
{{MissingSpecs}}
 
The DC509 uses reciprocal counting with an internal 100 MHz clock phase-locked to the reference oscillator. 
An R6504 microprocessor (28-pin variant of a [[6502]] with 8K addressable memory) performs the calculations.
 
Opt.01 is an OCXO for improved stability.
{{BeginSpecs}}
{{Spec | Frequency | ≤100 μHz to ≥135 MHz (Ch B in Ratio: ≥125 MHz) }}
{{Spec | Time A-B | ≤15 ns to ≥3.05 hours }}
{{Spec | Single shot resolution | 10 ns }}
{{Spec | Totalize | 2<sup>40</sup counts (1.09 × 10<sup>12</sup>) }}
{{SpecGroup | Standard time base }}
{{Spec | Frequency | 10 MHz ± 1 × 10<sup>-7</sup> at cal }}
{{Spec | Error | ≤ ±5 × 10<sup>-6</sup> from 0 °C to +50 °C }}
{{Spec | Aging | ≤ ±1 × 10<sup>-6</sup> per year }}
{{SpecGroup | Opt.01 OCXO time base }}
{{Spec | Frequency | 10 MHz ± 2 × 10<sup>-8</sup> at cal }}
{{Spec | Error | ≤ ±2 × 10<sup>-7</sup> from 0 °C to +50 °C (after oven warm-up) }}
{{Spec | Aging | ≤ ±1 × 10<sup>-8</sup> per day }}
{{EndSpecs}}


==Links==
==Links==