SRS DB64 Coax Delay Box
- Switch controlled time delays
- 0 to 63.5 ns delay range
- 0.5 ns resolution
- Low reflections and feed-through
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Additional 12 months warranty for free (2 years total) via our UK Service Centre.
The Stanford Research Systems DB64 Coax Delay Box provides switch-controlled delays from 0 to 63.5 ns with 0.5 ns resolution. Applications include the timing of photomultiplier coincidences, set-up of time-to-amplitude converters, adjustment of signal phase, or any application which requires an adjustable, high-bandwidth analog delay.
The interchangeable inputs/outputs are on BNC connectors. Internally, the delay line segments consist of accurate lengths of RG58A/U coax cable with 50 Ω characteristic impedance. DPDT switches are used to insert or remove delay segments. Careful component selection, mechanical design, and PCB layout ensure low reflections and low switch feed-through for high speed signals. Two DB64s can be mounted side-by-side in a 19” rack using the RM1U rack mount accessory. A chassis lug is provided on the rear panel as a safety ground.
| Connectors | BNC |
| Characteristic impedance | 50 Ω |
| Delay line cable | RG58A/U (Belden 8259) |
| Insertion delay | 2.5 ns |
| Delay range | 0 to 63.5 ns |
| Delay resolution | 0.5 ns |
| Delay error | |
| Signal reflection | |
| Switch feed through | <0.8 pF |
| Maximum voltage | 250 Vrms |
| Maximum current | 2 A |
| Dimensions | 8.3” × 1.5” × 8.0” (WHL) |
| Weight | 2 lbs |
Stanford Research Systems DB64 datasheet | Photo | Product | Price | |
|---|---|---|---|
 | SRS DG645 Digital Delay/Pulse Generator | 4,935.00 | |
 | SRS DG535 Digital Delay and Pulse Generator | 4,441.00 | |
 | SRS SRD1 Fast Rise Time Module | 247.00 |