DD501
The Tektronix DD501 is a digital delay plug-in for the TM500 system.
It provides "delay by events", producing a trigger output pulse after a selectable number (0 − 99,999) of input trigger events.
Key Specifications
| Event count | 0 to 99,999 |
|---|---|
| Max. count rate | 80 MHz |
| Insertion delay | ≤ 30 ns |
| Recycle time | ≤ 25 ns |
| Min. detectable pulse | ≥ 5 ns |
| Input impedance | 1 MΩ // 20 pF |
| Input sensitivity | 85 mVp-p up to 80 MHz, selectable + or − slope |
| Trigger level | ± 1 V |
| Trigger view output | ≥ 0.5 V |
| Output | Events pulse width plus 6 ns or less, TTL level (<0.8 V / >2.0 V) into three standard TTL loads |
Prices
| Year | 1975 | 1980 | 1985 | 1990 |
|---|---|---|---|---|
| Catalog price | $495 | $850 | $1,385 | $2,295 |
| 2018 value | $2,300 | $2,570 | $3,210 | $4,380 |
