DC509
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The Tektronix DC509 is a 135 MHz programmable frequency counter plug-in for the TM500 system.
The DC509 was designed by Bill Wilke. It is internally similar to the DC5009 to which it can be converted through an upgrade kit.
The DC509 uses reciprocal counting with an internal 100 MHz clock phase-locked to the reference oscillator. A 6504 microprocessor (28-pin variant of a 6502 with 8K addressable memory) performs the calculations.
Opt.01 is an OCXO for improved stability.
Key Specifications
| Resolution | 8 digits |
|---|---|
| Frequency | ≤100 μHz to ≥135 MHz (Ch B in Ratio: ≥125 MHz) |
| Time A-B | ≤15 ns to ≥3.05 hours |
| Single shot resolution | 10 ns |
| Totalize | 240 counts (1.09 × 1012) |
| — Standard time base — | |
| Frequency | 10 MHz ± 1 × 10-7 at cal |
| Error | ≤ ±5 × 10-6 from 0 °C to +50 °C |
| Aging | ≤ ±1 × 10-6 per year |
| — Opt.01 OCXO time base — | |
| Frequency | 10 MHz ± 2 × 10-8 at cal |
| Error | ≤ ±2 × 10-7 from 0 °C to +50 °C (after oven warm-up) |
| Aging | ≤ ±1 × 10-8 per day |
Links
Documents referencing DC509
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Tek forum report 6.pdf | Article | A Microprocessor-Based Frequency Meter | Bill Wilke | 1979 | DC509 • DC5009 |
| Tekscope 1981 V13 N1.pdf | Article | New Products | 1981 | PG507 • DC509 | |
| 070-2088-04.pdf | Book | TM500 Series Rear Interface Data Book | 1985 | AA501 • AF501 • AM501 • AM502 • AM503 • AM511 • DC501 • DC502 • DC503 • DC503A • DC504 • DC505 • DC505A • DC508 • DC508A • DC509 • DC510 • DC5009 • DC5010 • DD501 • DL502 • DM501 • DM501A • DM502 • DM502A • DM505 • DM5010 • FG501 • FG501A • FG502 • FG503 • FG504 • FG507 • FG5010 • LA501 • LA501W • WR501 • MR501 • PG501 • PG502 • PG505 • PG506 • PG507 • PG508 • PS501 • PS502 • PS503 • PS503A • PS505 • PS5010 • RG501 • SC501 • SC502 • SC503 • SC504 • SG502 • SG503 • SG504 • SG505 • SW503 • TG501 • TR501 • TR502 • MI5010 • MX5010 • SI5010 |
Patents that may apply to DC509
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 4013855A | Modular pushbutton switch | John E. Reichen • Richard Neff Meyer • Gary W. Reed | 1975-03-17 | 1977-03-22 | CP501 • DC509 • DC5009 • 7B10 • 7B15 • 7B50A • 7B80 • 7B85 • 7B87 |
| Patent US 4564804A | Method and apparatus for automatically detecting signal levels | William G. Wilke • Michael G. Reiney | 1981-06-08 | 1986-01-14 | DC509 • DC5009 |
| Patent US 4423337A | Gate circuit for a universal counter | William G. Wilke | 1981-07-13 | 1983-12-27 | DC509 • DC5009 |
Prices
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Rear interface
| 28B − Gate Out (TTL, active high) | 27B − Arming in GND |
| 27B | 27A − Arming in (TTL, active high) |
| 26B − Remote Start | 26A − Reset in (active low) |
| 25B | |
| 24B − Shaped Out B | Shaped Out B GND |
| 23B − Shaped Out A GND | Shaped Out A |
| 22B − Trig Level CH B | 22A − Trig Level CH A |
| 21B | |
| 20B | |
| 19B | |
| 18B | |
| 17B − CH B input (50 Ω, ≤10 VRMS) | 17A − CH A input GND |
| 16B − CH B input GND | 16A − CH A input (50 Ω, ≤10 VRMS) |
| 15B − 10 MHz clock out | 15A − 10 MHz clock out GND |
| 14B − Prescale; when low, counter divides readout by 16 | 14A − External clock Input |
Pictures
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(Labels GHz, MHz, kHz, Hz have been reprinted)
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Components
Some Parts Used in the DC509
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 148-0128-00 | 148-0128-00 | Discrete component | miniature magnetic latching relay armature | CG551AP • CG5001 • CG5010 • CG5011 • DC509 • DC5009 • DP501 • FG5010 • SG5030 |
| 2732 | 156-1403-00 • 156-1598-00 | Monolithic integrated circuit | 4K×8 EPROM | 1980 • 2445A • 2455A • 2465A • 2467 • 834 • DC509 • DC5009 • DC510 • DC5010 • DM5010 • Keithley 175 • Keithley 181 • Keithley 192 • Keithley 195 • Keithley 220 • Keithley 224 • TransEra 741-RTC |
| 2N4249 | 151-0342-00 | Discrete component | Si PNP low-noise transistor | 5A18N • DC501 • DC502 • DC503 • DC503A • DC504 • DC504A • DC505 • DC505A • DC508 • DC508A • DC509 • DC510 |
| Rockwell R6504 | 156-1482-00 | Monolithic integrated circuit | 8-bit microprocessor | DC509 • DC5009 • DC510 |
| Rockwell R6531 | 156-1530-00 | Monolithic integrated circuit | ROM-RAM-I/O-Counter (RRIOC) | DC509 • DC5009 |